private void RenderHiDef(TextureCube texture, Matrix orientation, float exposure, RenderContext context)
{
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.BlendState = BlendState.Opaque;
var cameraNode = context.CameraNode;
Matrix view = cameraNode.View;
Matrix projection = cameraNode.Camera.Projection;
// Cube maps are left handed --> Sample with inverted z. (Otherwise, the
// cube map and objects or texts in it are mirrored.)
var mirrorZ = Matrix.CreateScale(1, 1, -1);
_parameterWorldViewProjection.SetValue(
(Matrix)(projection * view * new Matrix(orientation, Vector3.Zero) * mirrorZ));
_parameterExposure.SetValue(new Vector4(exposure, exposure, exposure, 1));
_textureParameter.SetValue(texture);
if (context.IsHdrEnabled())
{
_passLinear.Apply();
}
else
{
_passGamma.Apply();
}
_submesh.Draw();
savedRenderState.Restore();
}
internal virtual void ProcessJobs(RenderContext context, RenderOrder order)
{
if (order == RenderOrder.BackToFront || order == RenderOrder.FrontToBack)
{
// The scene nodes are already sorted by distance.
order = RenderOrder.UserDefined;
}
var savedRenderState = new RenderStateSnapshot(context.GraphicsService.GraphicsDevice);
int index = 0;
var jobs = Jobs.Array;
int jobCount = Jobs.Count;
while (index < jobCount)
{
var renderer = jobs[index].Renderer;
// Find end of current batch.
int endIndexExclusive = index + 1;
while (endIndexExclusive < jobCount && jobs[endIndexExclusive].Renderer == renderer)
{
endIndexExclusive++;
}
// Restore the render state. (The integrated scene node renderers properly
// restore the render state, but third-party renderers might mess it up.)
if (index > 0)
{
savedRenderState.Restore();
}
// Submit batch to renderer.
// (Use Accessor to expose current batch as IList<SceneNode>.)
JobsAccessor.Set(Jobs, index, endIndexExclusive);
renderer.Render(JobsAccessor, context, order);
JobsAccessor.Reset();
index = endIndexExclusive;
}
savedRenderState.Restore();
}
/// <summary>
/// Draws the textures.
/// </summary>
/// <param name="context">The render context.</param>
/// <remarks>
/// If <see cref="SpriteBatch"/> is <see langword="null"/>, then <see cref="Render"/> does
/// nothing.
/// </remarks>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is <see langword="null"/>.
/// </exception>
public void Render(RenderContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (SpriteBatch == null)
{
return;
}
var count = _textures.Count;
if (count == 0)
{
return;
}
context.Validate(SpriteBatch);
var savedRenderState = new RenderStateSnapshot(SpriteBatch.GraphicsDevice);
SpriteBatch.Begin(SpriteSortMode.Immediate, BlendState.AlphaBlend, SamplerState.LinearClamp, DepthStencilState.None, RasterizerState.CullNone);
for (int i = 0; i < count; i++)
{
var textureInfo = _textures[i];
if (textureInfo.Texture.IsDisposed)
{
continue;
}
if (TextureHelper.IsFloatingPointFormat(textureInfo.Texture.Format))
{
// Floating-point textures must not use linear hardware filtering!
SpriteBatch.GraphicsDevice.SamplerStates[0] = SamplerState.PointClamp;
SpriteBatch.Draw(textureInfo.Texture, textureInfo.Rectangle, Color.White);
SpriteBatch.GraphicsDevice.SamplerStates[0] = SamplerState.LinearClamp;
}
else
{
SpriteBatch.Draw(textureInfo.Texture, textureInfo.Rectangle, Color.White);
}
}
SpriteBatch.End();
savedRenderState.Restore();
}
private void ProcessJobs(RenderContext context)
{
var graphicsDevice = GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
PrepareBillboards(context);
// Batch billboards using the same texture.
int index = 0;
var jobs = _jobs.Array;
int jobCount = _jobs.Count;
while (index < jobCount)
{
uint textureId = jobs[index].TextureId;
int endIndex = index + 1;
while (endIndex < jobCount && jobs[endIndex].TextureId == textureId)
{
endIndex++;
}
// Submit batch.
if (textureId == FontTextureId)
{
// Text
EndBillboards(context);
DrawText(index, endIndex, context);
}
else
{
// Billboards, particles
BeginBillboards(context);
DrawBillboards(index, endIndex, context);
}
index = endIndex;
}
EndBillboards(context);
savedRenderState.Restore();
}
internal void ProcessInternal(RenderContext context)
{
Debug.Assert(Enabled, "PostProcessor.ProcessInternal should only be called when the post-processor is enabled.");
var graphicsDevice = GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
// Set render states. The blend state must be set by the user!
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.None;
// Preform post-processing.
OnProcess(context);
savedRenderState.Restore();
// Reset the texture stages. If a floating point texture is set, we get exceptions
// when a sampler with bilinear filtering is set.
graphicsDevice.ResetTextures();
}
/// <summary>
/// Clears the current render target (which must be the G-buffer).
/// </summary>
/// <param name="context">The render context.</param>
public void Render(RenderContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
context.Validate(_effect);
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.BlendState = BlendState.Opaque;
// Clear to maximum depth.
_parameterDepth.SetValue(1.0f);
// The environment is facing the camera.
// --> Set normal = cameraBackward.
var cameraNode = context.CameraNode;
_parameterNormal.SetValue((cameraNode != null) ? (Vector3)cameraNode.ViewInverse.GetColumn(2).XYZ : Vector3.Backward);
// Clear specular to arbitrary value.
_parameterSpecularPower.SetValue(1.0f);
_effect.CurrentTechnique.Passes[0].Apply();
// Draw full-screen quad using clip space coordinates.
graphicsDevice.DrawQuad(
new VertexPositionTexture(new Vector3(-1, 1, 0), new Vector2(0, 0)),
new VertexPositionTexture(new Vector3(1, -1, 0), new Vector2(1, 1)));
savedRenderState.Restore();
}
private void DrawText(int index, int endIndex, RenderContext context)
{
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderStates = new RenderStateSnapshot(graphicsDevice);
// The sprite batch and text effect are only created when needed.
if (_spriteBatch == null)
{
_spriteBatch = context.GraphicsService.GetSpriteBatch();
_textEffect = new BasicEffect(graphicsDevice)
{
TextureEnabled = true,
VertexColorEnabled = true,
};
}
_textEffect.View = (Matrix)context.CameraNode.View;
_textEffect.Projection = context.CameraNode.Camera.Projection;
var jobs = _jobs.Array;
while (index < endIndex)
{
var node = jobs[index++].Node as BillboardNode;
if (node == null)
{
continue;
}
var billboard = node.Billboard as TextBillboard;
if (billboard == null)
{
continue;
}
var font = billboard.Font ?? _defaultFont;
if (font == null)
{
continue;
}
var text = billboard.Text as string;
var stringBuilder = billboard.Text as StringBuilder;
if (string.IsNullOrEmpty(text) && (stringBuilder == null || stringBuilder.Length == 0))
{
continue;
}
Vector3F position = node.PoseWorld.Position;
var orientation = billboard.Orientation;
#region ----- Billboarding -----
// (Code copied from BillboardBatchReach.)
// Normal
Vector3F normal;
if (orientation.Normal == BillboardNormal.ViewPlaneAligned)
{
normal = _defaultNormal;
}
else if (orientation.Normal == BillboardNormal.ViewpointOriented)
{
Vector3F n = _cameraPose.Position - position;
normal = n.TryNormalize() ? n : _defaultNormal;
}
else
{
normal = node.Normal;
}
// Axis = up vector
Vector3F axis = node.Axis;
if (orientation.IsAxisInViewSpace)
{
axis = _cameraPose.ToWorldDirection(axis);
}
if (1 - Vector3F.Dot(normal, axis) < Numeric.EpsilonF)
{
// Normal and axis are parallel.
// --> Bend normal by adding a fraction of the camera down vector.
Vector3F cameraDown = -_cameraPose.Orientation.GetColumn(1);
normal += cameraDown * 0.001f;
normal.Normalize();
}
// Compute right.
//Vector3F right = Vector3F.Cross(axis, normal);
// Inlined:
Vector3F right;
right.X = axis.Y * normal.Z - axis.Z * normal.Y;
right.Y = axis.Z * normal.X - axis.X * normal.Z;
right.Z = axis.X * normal.Y - axis.Y * normal.X;
if (!right.TryNormalize())
{
right = normal.Orthonormal1; // Normal and axis are parallel --> Choose random perpendicular vector.
}
if (orientation.IsAxisFixed)
{
// Make sure normal is perpendicular to right and up.
//normal = Vector3F.Cross(right, axis);
// Inlined:
normal.X = right.Y * axis.Z - right.Z * axis.Y;
normal.Y = right.Z * axis.X - right.X * axis.Z;
normal.Z = right.X * axis.Y - right.Y * axis.X;
// No need to normalize because right and up are normalized and perpendicular.
}
else
{
// Make sure axis is perpendicular to normal and right.
//axis = Vector3F.Cross(normal, right);
// Inlined:
axis.X = normal.Y * right.Z - normal.Z * right.Y;
axis.Y = normal.Z * right.X - normal.X * right.Z;
axis.Z = normal.X * right.Y - normal.Y * right.X;
// No need to normalize because normal and right are normalized and perpendicular.
}
#endregion
_textEffect.World = new Matrix(right.X, right.Y, right.Z, 0,
-axis.X, -axis.Y, -axis.Z, 0,
normal.X, normal.Y, normal.Z, 0,
position.X, position.Y, position.Z, 1);
Vector3F color3F = node.Color * billboard.Color;
float alpha = node.Alpha * billboard.Alpha;
Color color = new Color(color3F.X * alpha,
color3F.Y * alpha,
color3F.Z * alpha,
alpha);
Vector2 size = (text != null) ? font.MeasureString(text) : font.MeasureString(stringBuilder);
Vector2 origin = size / 2;
float scale = node.ScaleWorld.Y; // Assume uniform scale.
_spriteBatch.Begin(SpriteSortMode.Immediate, null, null, graphicsDevice.DepthStencilState, RasterizerState.CullNone, _textEffect);
if (text != null)
{
_spriteBatch.DrawString(font, text, Vector2.Zero, color, 0, origin, scale, SpriteEffects.None, 0);
}
else
{
_spriteBatch.DrawString(font, stringBuilder, Vector2.Zero, color, 0, origin, scale, SpriteEffects.None, 0);
}
_spriteBatch.End();
}
savedRenderStates.Restore();
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
// Camera properties
int viewportHeight = graphicsDevice.Viewport.Height;
var cameraNode = context.CameraNode;
var projection = cameraNode.Camera.Projection;
_parameterProjection.SetValue(projection);
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as CloudLayerNode;
if (node == null)
{
continue;
}
// CloudLayerNode is visible in current frame.
node.LastFrame = frame;
if (node.CloudMap.Texture == null)
{
continue;
}
var sunDirection = node.SunDirection;
_parameterSunDirection.SetValue((Vector3)sunDirection);
_parameterSkyCurvature.SetValue(node.SkyCurvature);
_parameterTextureMatrix.SetValue((Matrix) new Matrix44F(node.TextureMatrix, Vector3F.Zero));
// The sample at the pixel counts as one, the rest are for the blur.
// Note: We must not set -1 because a for loop like
// for (int i = 0; i < -1, i++)
// crashes the AMD DX9 WP8.1 graphics driver. LOL
_parameterNumberOfSamples.SetValue(Math.Max(0, node.NumberOfSamples - 1));
_parameterSampleDistance.SetValue(node.SampleDistance);
_parameterScatterParameters.SetValue(new Vector3(node.ForwardScatterExponent, node.ForwardScatterScale, node.ForwardScatterOffset));
_parameterHorizonFade.SetValue(new Vector2(node.HorizonFade, node.HorizonBias));
_parameterSunLight.SetValue((Vector3)node.SunLight);
_parameterAmbientLight.SetValue(new Vector4((Vector3)node.AmbientLight, node.Alpha));
_parameterTexture.SetValue(node.CloudMap.Texture);
// Occlusion query.
if (graphicsDevice.GraphicsProfile != GraphicsProfile.Reach && node.SunQuerySize >= Numeric.EpsilonF)
{
bool skipQuery = false;
if (node.OcclusionQuery != null)
{
if (node.OcclusionQuery.IsComplete)
{
node.TryUpdateSunOcclusion();
}
else
{
// The previous query is still not finished. Do not start a new query, this would
// create a SharpDX warning.
skipQuery = true;
}
}
else
{
node.OcclusionQuery = new OcclusionQuery(graphicsDevice);
}
if (!skipQuery)
{
node.IsQueryPending = true;
float totalPixels = viewportHeight * node.SunQuerySize;
totalPixels *= totalPixels;
node.QuerySize = totalPixels;
// Use a camera which looks at the sun.
// Get an relative up vector which is not parallel to the forward direction.
var lookAtUp = Vector3F.UnitY;
if (Vector3F.AreNumericallyEqual(sunDirection, lookAtUp))
{
lookAtUp = Vector3F.UnitZ;
}
Vector3F zAxis = -sunDirection;
Vector3F xAxis = Vector3F.Cross(lookAtUp, zAxis).Normalized;
Vector3F yAxis = Vector3F.Cross(zAxis, xAxis);
var lookAtSunView = new Matrix(xAxis.X, yAxis.X, zAxis.X, 0,
xAxis.Y, yAxis.Y, zAxis.Y, 0,
xAxis.Z, yAxis.Z, zAxis.Z, 0,
0, 0, 0, 1);
_parameterView.SetValue(lookAtSunView);
graphicsDevice.BlendState = GraphicsHelper.BlendStateNoColorWrite;
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
// Create small quad shortly behind the near plane.
// Note: We use an "untranslated" view matrix, so we can ignore the camera position.
float width = (projection.Top - projection.Bottom) * node.SunQuerySize;
Vector3F right = sunDirection.Orthonormal1 * (width / 2);
Vector3F up = sunDirection.Orthonormal2 * (width / 2);
Vector3F center = sunDirection * (projection.Near * 1.0001f);
_queryGeometry[0] = center - up - right;
_queryGeometry[1] = center + up - right;
_queryGeometry[2] = center - up + right;
_queryGeometry[3] = center + up + right;
if (node.CloudMap.Texture.Format == SurfaceFormat.Alpha8)
{
_passOcclusionAlpha.Apply();
}
else
{
_passOcclusionRgb.Apply();
}
node.OcclusionQuery.Begin();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _queryGeometry, 0, 2,
VertexPosition.VertexDeclaration);
node.OcclusionQuery.End();
}
}
else
{
node.IsQueryPending = false;
node.SunOcclusion = 0;
}
Matrix viewUntranslated = (Matrix) new Matrix44F(cameraNode.PoseWorld.Orientation.Transposed, new Vector3F(0));
_parameterView.SetValue(viewUntranslated);
// Render clouds.
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
if (context.IsHdrEnabled())
{
if (node.CloudMap.Texture.Format == SurfaceFormat.Alpha8)
{
_passCloudAlphaLinear.Apply();
}
else
{
_passCloudRgbLinear.Apply();
}
}
else
{
if (node.CloudMap.Texture.Format == SurfaceFormat.Alpha8)
{
_passCloudAlphaGamma.Apply();
}
else
{
_passCloudRgbGamma.Apply();
}
}
_submesh.Draw();
}
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
return;
context.Validate(_effect);
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.None;
int frame = context.Frame;
float deltaTime = (float)context.DeltaTime.TotalSeconds;
for (int nodeIndex = 0; nodeIndex < numberOfNodes; nodeIndex++)
{
var cloudNode = nodes[nodeIndex] as CloudLayerNode;
if (cloudNode == null)
continue;
var cloudMap = cloudNode.CloudMap as LayeredCloudMap;
if (cloudMap == null)
continue;
// We update the cloud map only once per frame.
if (cloudMap.LastFrame == frame)
continue;
cloudMap.LastFrame = frame;
var layers = cloudMap.Layers;
var animationTimes = cloudMap.AnimationTimes;
var sources = cloudMap.SourceLayers;
var targets = cloudMap.TargetLayers;
var renderTargets = cloudMap.LayerTextures;
// Animate the cloud map layers.
for (int i = 0; i < LayeredCloudMap.NumberOfTextures; i++)
{
if (layers[i] == null || layers[i].Texture != null)
continue;
if (cloudMap.Random == null)
cloudMap.Random = new Random(cloudMap.Seed);
// Make sure there is a user-defined texture or data for procedural textures.
if (sources[i] == null)
{
// Each octave is 128 x 128 (= 1 / 4 of the 512 * 512 noise texture).
sources[i] = new PackedTexture(null, _noiseTexture, cloudMap.Random.NextVector2F(0, 1), new Vector2F(0.25f));
targets[i] = new PackedTexture(null, _noiseTexture, cloudMap.Random.NextVector2F(0, 1), new Vector2F(0.25f));
renderTargets[i] = new RenderTarget2D(graphicsDevice, 128, 128, false, SurfaceFormat.Alpha8, DepthFormat.None);
}
// Update animation time.
animationTimes[i] += deltaTime * layers[i].AnimationSpeed;
// Update source and target if animation time is beyond 1.
if (animationTimes[i] > 1)
{
// Wrap animation time.
animationTimes[i] = animationTimes[i] % 1;
// Swap source and target.
MathHelper.Swap(ref sources[i], ref targets[i]);
// Set target to a new random part of the noise texture.
targets[i].Offset = cloudMap.Random.NextVector2F(0, 1);
}
// Lerp source and target together to get the final noise texture.
graphicsDevice.SetRenderTarget(renderTargets[i]);
_parameterViewportSize.SetValue(new Vector2(graphicsDevice.Viewport.Width, graphicsDevice.Viewport.Height));
_parameterTextures[0].SetValue(sources[i].TextureAtlas);
_parameterTextures[1].SetValue(targets[i].TextureAtlas);
_parameterTexture0Parameters.SetValue(new Vector4(sources[i].Scale.X, sources[i].Scale.Y, sources[i].Offset.X, sources[i].Offset.Y));
_parameterTexture1Parameters.SetValue(new Vector4(targets[i].Scale.X, targets[i].Scale.Y, targets[i].Offset.X, targets[i].Offset.Y));
_parameterLerp.SetValue(animationTimes[i]);
_passLerp.Apply();
graphicsDevice.DrawFullScreenQuad();
}
// Initialize the cloud map.
if (cloudMap.Texture == null || cloudMap.Size != cloudMap.Texture.Width)
{
cloudMap.Texture.SafeDispose();
var cloudTexture = new RenderTarget2D(
graphicsDevice,
cloudMap.Size,
cloudMap.Size,
false,
SurfaceFormat.Alpha8,
DepthFormat.None);
cloudMap.SetTexture(cloudTexture);
}
// Combine the layers.
graphicsDevice.SetRenderTarget((RenderTarget2D)cloudMap.Texture);
_parameterViewportSize.SetValue(new Vector2(cloudMap.Texture.Width, cloudMap.Texture.Height));
for (int i = 0; i < LayeredCloudMap.NumberOfTextures; i++)
{
var layer = layers[i] ?? EmptyLayer;
_parameterTextures[i].SetValue(layer.Texture ?? renderTargets[i]);
_parameterMatrices[i].SetValue((Matrix)new Matrix44F(layer.TextureMatrix, Vector3F.Zero));
_parameterDensities[i].SetValue(new Vector2(layer.DensityScale, layer.DensityOffset));
}
_parameterCoverage.SetValue(cloudMap.Coverage);
_parameterDensity.SetValue(cloudMap.Density);
_passDensity.Apply();
graphicsDevice.DrawFullScreenQuad();
}
savedRenderState.Restore();
graphicsDevice.SetRenderTarget(null);
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
}
private void DrawText(int index, int endIndex, RenderContext context)
{
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderStates = new RenderStateSnapshot(graphicsDevice);
// The sprite batch and text effect are only created when needed.
if (_spriteBatch == null)
{
_spriteBatch = context.GraphicsService.GetSpriteBatch();
_textEffect = new BasicEffect(graphicsDevice)
{
TextureEnabled = true,
VertexColorEnabled = true,
};
}
_textEffect.View = (Matrix)context.CameraNode.View;
_textEffect.Projection = context.CameraNode.Camera.Projection;
var jobs = _jobs.Array;
while (index < endIndex)
{
var node = jobs[index++].Node as BillboardNode;
if (node == null)
continue;
var billboard = node.Billboard as TextBillboard;
if (billboard == null)
continue;
var font = billboard.Font ?? _defaultFont;
if (font == null)
continue;
var text = billboard.Text as string;
var stringBuilder = billboard.Text as StringBuilder;
if (string.IsNullOrEmpty(text) && (stringBuilder == null || stringBuilder.Length == 0))
continue;
Vector3F position = node.PoseWorld.Position;
var orientation = billboard.Orientation;
#region ----- Billboarding -----
// (Code copied from BillboardBatchReach.)
// Normal
Vector3F normal;
if (orientation.Normal == BillboardNormal.ViewPlaneAligned)
{
normal = _defaultNormal;
}
else if (orientation.Normal == BillboardNormal.ViewpointOriented)
{
Vector3F n = _cameraPose.Position - position;
normal = n.TryNormalize() ? n : _defaultNormal;
}
else
{
normal = node.Normal;
}
// Axis = up vector
Vector3F axis = node.Axis;
if (orientation.IsAxisInViewSpace)
axis = _cameraPose.ToWorldDirection(axis);
if (1 - Vector3F.Dot(normal, axis) < Numeric.EpsilonF)
{
// Normal and axis are parallel.
// --> Bend normal by adding a fraction of the camera down vector.
Vector3F cameraDown = -_cameraPose.Orientation.GetColumn(1);
normal += cameraDown * 0.001f;
normal.Normalize();
}
// Compute right.
//Vector3F right = Vector3F.Cross(axis, normal);
// Inlined:
Vector3F right;
right.X = axis.Y * normal.Z - axis.Z * normal.Y;
right.Y = axis.Z * normal.X - axis.X * normal.Z;
right.Z = axis.X * normal.Y - axis.Y * normal.X;
if (!right.TryNormalize())
right = normal.Orthonormal1; // Normal and axis are parallel --> Choose random perpendicular vector.
if (orientation.IsAxisFixed)
{
// Make sure normal is perpendicular to right and up.
//normal = Vector3F.Cross(right, axis);
// Inlined:
normal.X = right.Y * axis.Z - right.Z * axis.Y;
normal.Y = right.Z * axis.X - right.X * axis.Z;
normal.Z = right.X * axis.Y - right.Y * axis.X;
// No need to normalize because right and up are normalized and perpendicular.
}
else
{
// Make sure axis is perpendicular to normal and right.
//axis = Vector3F.Cross(normal, right);
// Inlined:
axis.X = normal.Y * right.Z - normal.Z * right.Y;
axis.Y = normal.Z * right.X - normal.X * right.Z;
axis.Z = normal.X * right.Y - normal.Y * right.X;
// No need to normalize because normal and right are normalized and perpendicular.
}
#endregion
_textEffect.World = new Matrix(right.X, right.Y, right.Z, 0,
-axis.X, -axis.Y, -axis.Z, 0,
normal.X, normal.Y, normal.Z, 0,
position.X, position.Y, position.Z, 1);
Vector3F color3F = node.Color * billboard.Color;
float alpha = node.Alpha * billboard.Alpha;
Color color = new Color(color3F.X * alpha,
color3F.Y * alpha,
color3F.Z * alpha,
alpha);
Vector2 size = (text != null) ? font.MeasureString(text) : font.MeasureString(stringBuilder);
Vector2 origin = size / 2;
float scale = node.ScaleWorld.Y; // Assume uniform scale.
_spriteBatch.Begin(SpriteSortMode.Immediate, null, null, graphicsDevice.DepthStencilState, RasterizerState.CullNone, _textEffect);
if (text != null)
_spriteBatch.DrawString(font, text, Vector2.Zero, color, 0, origin, scale, SpriteEffects.None, 0);
else
_spriteBatch.DrawString(font, stringBuilder, Vector2.Zero, color, 0, origin, scale, SpriteEffects.None, 0);
_spriteBatch.End();
}
savedRenderStates.Restore();
}
/// <inheritdoc/>
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
{
return;
}
context.ThrowIfCameraMissing();
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalSceneNode = context.SceneNode;
var originalTechnique = context.Technique;
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
//int frame = context.Frame;
//float deltaTime = (float)context.DeltaTime.TotalSeconds;
for (int nodeIndex = 0; nodeIndex < numberOfNodes; nodeIndex++)
{
var node = nodes[nodeIndex] as TerrainNode;
if (node == null)
{
continue;
}
context.SceneNode = node;
context.RenderPass = RenderPassBase;
ProcessClipmap(node, node.BaseClipmap, context);
context.RenderPass = RenderPassDetail;
ProcessClipmap(node, node.DetailClipmap, context);
}
context.RenderPass = null;
// Clear invalid regions stored in terrain. (Note: Terrains can be shared.)
for (int nodeIndex = 0; nodeIndex < numberOfNodes; nodeIndex++)
{
var node = nodes[nodeIndex] as TerrainNode;
if (node == null)
{
continue;
}
node.Terrain.InvalidBaseRegions.Clear();
node.Terrain.InvalidDetailRegions.Clear();
}
// The clipmap layers use a MipMapLodBias which must be reset.
graphicsDevice.ResetSamplerStates();
savedRenderState.Restore();
graphicsDevice.SetRenderTarget(null);
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.SceneNode = originalSceneNode;
context.MaterialBinding = null;
context.MaterialInstanceBinding = null;
context.Technique = originalTechnique;
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
{
return;
}
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
// Camera properties
var cameraNode = context.CameraNode;
Matrix view = (Matrix) new Matrix(cameraNode.PoseWorld.Orientation.Transposed, new Vector3());
_parameterView.SetValue(view);
Matrix projection = cameraNode.Camera.Projection;
_parameterProjection.SetValue(projection);
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as GradientSkyNode;
if (node == null)
{
continue;
}
// GradientSkyNode is visible in current frame.
node.LastFrame = frame;
_parameterSunDirection.SetValue((Vector3)node.SunDirection);
_parameterFrontColor.SetValue((Vector4)node.FrontColor);
_parameterZenithColor.SetValue((Vector4)node.ZenithColor);
_parameterBackColor.SetValue((Vector4)node.BackColor);
_parameterGroundColor.SetValue((Vector4)node.GroundColor);
_parameterShift.SetValue(new Vector4(node.FrontZenithShift, node.BackZenithShift, node.FrontGroundShift, node.BackGroundShift));
if (node.CieSkyStrength < Numeric.EpsilonF)
{
if (context.IsHdrEnabled())
{
_passLinear.Apply();
}
else
{
_passGamma.Apply();
}
}
else
{
var p = node.CieSkyParameters;
_parameterAbcd.SetValue(new Vector4(p.A, p.B, p.C, p.D));
_parameterEAndStrength.SetValue(new Vector2(p.E, node.CieSkyStrength));
if (context.IsHdrEnabled())
{
_passCieLinear.Apply();
}
else
{
_passCieGamma.Apply();
}
}
_submesh.Draw();
}
savedRenderState.Restore();
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
context.ThrowIfCameraMissing();
context.ThrowIfSceneMissing();
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalReferenceNode = context.ReferenceNode;
var cameraNode = context.CameraNode;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
// The scene node renderer should use the light camera instead of the player camera.
context.CameraNode = _perspectiveCameraNode;
context.Technique = "Omnidirectional";
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var renderTargetPool = graphicsService.RenderTargetPool;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
{
continue;
}
var shadow = lightNode.Shadow as CubeMapShadow;
if (shadow == null)
{
continue;
}
var light = lightNode.Light as PointLight;
if (light == null)
{
throw new GraphicsException("CubeMapShadow can only be used with a PointLight.");
}
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
if (shadow.ShadowMap == null)
{
shadow.ShadowMap = renderTargetPool.ObtainCube(
new RenderTargetFormat(
shadow.PreferredSize,
null,
false,
shadow.Prefer16Bit ? SurfaceFormat.HalfSingle : SurfaceFormat.Single,
DepthFormat.Depth24));
}
((PerspectiveProjection)_perspectiveCameraNode.Camera.Projection).SetFieldOfView(
ConstantsF.PiOver2, 1, shadow.Near, light.Range);
// World units per texel at a planar distance of 1 world unit.
float unitsPerTexel = _perspectiveCameraNode.Camera.Projection.Width / (shadow.ShadowMap.Size * shadow.Near);
// Convert depth bias from "texel" to world space.
// Minus to move receiver closer to light.
shadow.EffectiveDepthBias = -shadow.DepthBias * unitsPerTexel;
// Convert normal offset from "texel" to world space.
shadow.EffectiveNormalOffset = shadow.NormalOffset * unitsPerTexel;
var pose = lightNode.PoseWorld;
context.ReferenceNode = lightNode;
context.Object = shadow;
bool shadowMapContainsSomething = false;
for (int side = 0; side < 6; side++)
{
context.Data[RenderContextKeys.ShadowTileIndex] = BoxedIntegers[side];
graphicsDevice.SetRenderTarget(shadow.ShadowMap, CubeMapFaces[side]);
// context.RenderTarget = shadow.ShadowMap; // TODO: Support cube maps targets in the render context.
context.Viewport = graphicsDevice.Viewport;
graphicsDevice.Clear(Color.White);
_perspectiveCameraNode.View = Matrix.CreateLookAt(
pose.Position,
pose.ToWorldPosition(CubeMapForwardVectors[side]),
pose.ToWorldDirection(CubeMapUpVectors[side]));
// Abort if this cube map frustum does not touch the camera frustum.
if (!context.Scene.HaveContact(cameraNode, _perspectiveCameraNode))
{
continue;
}
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
shadowMapContainsSomething |= RenderCallback(context);
}
// Recycle shadow map if empty.
if (!shadowMapContainsSomething)
{
renderTargetPool.Recycle(shadow.ShadowMap);
shadow.ShadowMap = null;
}
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.CameraNode = cameraNode;
context.Technique = null;
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.ReferenceNode = originalReferenceNode;
context.Object = null;
context.Data[RenderContextKeys.ShadowTileIndex] = null;
}
private void RenderReach(SkyboxNode node, RenderContext context)
{
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.BlendState = node.EnableAlphaBlending ? BlendState.AlphaBlend : BlendState.Opaque;
graphicsDevice.SamplerStates[0] = SamplerState.LinearClamp;
// Change viewport to render all pixels at max z.
var originalViewport = graphicsDevice.Viewport;
var viewport = originalViewport;
viewport.MinDepth = viewport.MaxDepth;
graphicsDevice.Viewport = viewport;
var cameraNode = context.CameraNode;
var view = cameraNode.View;
view.Translation = Vector3F.Zero;
var projection = cameraNode.Camera.Projection;
var basicEffect = (BasicEffect)_effect;
basicEffect.View = (Matrix)view;
basicEffect.Projection = projection;
basicEffect.DiffuseColor = (Vector3)node.Color;
basicEffect.Alpha = node.EnableAlphaBlending ? node.Alpha : 1;
// Scale skybox such that it lies within view frustum:
// distance of a skybox corner = √3
// √3 * scale = far
// => scale = far / √3
// (Note: If near > far / √3 then the skybox will be clipped.)
float scale = projection.Far * 0.577f;
var orientation = node.PoseWorld.Orientation;
// Positive X
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.PositiveX);
basicEffect.World = (Matrix)new Matrix44F(orientation * scale, Vector3F.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Negative X
// transform = scale * rotY(180°)
var transform = new Matrix33F(-scale, 0, 0, 0, scale, 0, 0, 0, -scale);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.NegativeX);
basicEffect.World = (Matrix)new Matrix44F(orientation * transform, Vector3F.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Positive Y
// transform = scale * rotX(90°) * rotY(90°)
transform = new Matrix33F(0, 0, scale, scale, 0, 0, 0, scale, 0);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.PositiveY);
basicEffect.World = (Matrix)new Matrix44F(orientation * transform, Vector3F.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Negative Y
// transform = scale * rotX(-90°) * rotY(90°)
transform = new Matrix33F(0, 0, scale, -scale, 0, 0, 0, -scale, 0);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.NegativeY);
basicEffect.World = (Matrix)new Matrix44F(orientation * transform, Vector3F.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Cube maps are left-handed, where as the world is right-handed!
// Positive Z (= negative Z in world space)
// transform = scale * rotY(90°)
transform = new Matrix33F(0, 0, scale, 0, scale, 0, -scale, 0, 0);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.PositiveZ);
basicEffect.World = (Matrix)new Matrix44F(orientation * transform, Vector3F.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Negative Z (= positive Z in world space)
// transform = scale * rotY(-90°)
transform = new Matrix33F(0, 0, -scale, 0, scale, 0, scale, 0, 0);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.NegativeZ);
basicEffect.World = (Matrix)new Matrix44F(orientation * transform, Vector3F.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
graphicsDevice.Viewport = originalViewport;
savedRenderState.Restore();
}
private void RenderHiDef(SkyboxNode node, RenderContext context)
{
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.BlendState = node.EnableAlphaBlending ? BlendState.AlphaBlend : BlendState.Opaque;
bool sourceIsFloatingPoint = TextureHelper.IsFloatingPointFormat(node.Texture.Format);
// Set sampler state. (Floating-point textures cannot use linear filtering. (XNA would throw an exception.))
if (sourceIsFloatingPoint)
graphicsDevice.SamplerStates[0] = SamplerState.PointClamp;
else
graphicsDevice.SamplerStates[0] = SamplerState.LinearClamp;
var cameraNode = context.CameraNode;
Matrix44F view = cameraNode.View;
Matrix44F projection = cameraNode.Camera.Projection;
// Cube maps are left handed --> Sample with inverted z. (Otherwise, the
// cube map and objects or texts in it are mirrored.)
var mirrorZ = Matrix44F.CreateScale(1, 1, -1);
Matrix33F orientation = node.PoseWorld.Orientation;
_parameterWorldViewProjection.SetValue((Matrix)(projection * view * new Matrix44F(orientation, Vector3F.Zero) * mirrorZ));
Vector4 color = node.EnableAlphaBlending
? new Vector4((Vector3)node.Color * node.Alpha, node.Alpha) // Premultiplied
: new Vector4((Vector3)node.Color, 1); // Opaque
_parameterColor.SetValue(color);
_textureParameter.SetValue(node.Texture);
if (node.Encoding is RgbEncoding)
{
_parameterTextureSize.SetValue(node.Texture.Size);
if (context.IsHdrEnabled())
_passRgbToRgb.Apply();
else
_passRgbToSRgb.Apply();
}
else if (node.Encoding is SRgbEncoding)
{
if (!sourceIsFloatingPoint)
{
if (context.IsHdrEnabled())
_passSRgbToRgb.Apply();
else
_passSRgbToSRgb.Apply();
}
else
{
throw new GraphicsException("sRGB encoded skybox cube maps must not use a floating point format.");
}
}
else if (node.Encoding is RgbmEncoding)
{
float max = GraphicsHelper.ToGamma(((RgbmEncoding)node.Encoding).Max);
_parameterRgbmMaxValue.SetValue(max);
if (context.IsHdrEnabled())
_passRgbmToRgb.Apply();
else
_passRgbmToSRgb.Apply();
}
else
{
throw new NotSupportedException("The SkyBoxRenderer supports only RgbEncoding, SRgbEncoding and RgbmEncoding.");
}
_submesh.Draw();
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
context.ThrowIfCameraMissing();
context.ThrowIfSceneMissing();
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalReferenceNode = context.ReferenceNode;
var cameraNode = context.CameraNode;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
// The scene node renderer should use the light camera instead of the player camera.
context.CameraNode = _perspectiveCameraNode;
context.Technique = "Omnidirectional";
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var renderTargetPool = graphicsService.RenderTargetPool;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
continue;
var shadow = lightNode.Shadow as CubeMapShadow;
if (shadow == null)
continue;
var light = lightNode.Light as PointLight;
if (light == null)
throw new GraphicsException("CubeMapShadow can only be used with a PointLight.");
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
if (shadow.ShadowMap == null)
{
shadow.ShadowMap = renderTargetPool.ObtainCube(
new RenderTargetFormat(
shadow.PreferredSize,
null,
false,
shadow.Prefer16Bit ? SurfaceFormat.HalfSingle : SurfaceFormat.Single,
DepthFormat.Depth24));
}
((PerspectiveProjection)_perspectiveCameraNode.Camera.Projection).SetFieldOfView(
ConstantsF.PiOver2, 1, shadow.Near, light.Range);
// World units per texel at a planar distance of 1 world unit.
float unitsPerTexel = _perspectiveCameraNode.Camera.Projection.Width / (shadow.ShadowMap.Size * shadow.Near);
// Convert depth bias from "texel" to world space.
// Minus to move receiver closer to light.
shadow.EffectiveDepthBias = -shadow.DepthBias * unitsPerTexel;
// Convert normal offset from "texel" to world space.
shadow.EffectiveNormalOffset = shadow.NormalOffset * unitsPerTexel;
var pose = lightNode.PoseWorld;
context.ReferenceNode = lightNode;
context.Object = shadow;
bool shadowMapContainsSomething = false;
for (int side = 0; side < 6; side++)
{
context.Data[RenderContextKeys.ShadowTileIndex] = BoxedIntegers[side];
graphicsDevice.SetRenderTarget(shadow.ShadowMap, CubeMapFaces[side]);
// context.RenderTarget = shadow.ShadowMap; // TODO: Support cube maps targets in the render context.
context.Viewport = graphicsDevice.Viewport;
graphicsDevice.Clear(Color.White);
_perspectiveCameraNode.View = Matrix44F.CreateLookAt(
pose.Position,
pose.ToWorldPosition(CubeMapForwardVectors[side]),
pose.ToWorldDirection(CubeMapUpVectors[side]));
// Abort if this cube map frustum does not touch the camera frustum.
if (!context.Scene.HaveContact(cameraNode, _perspectiveCameraNode))
continue;
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
shadowMapContainsSomething |= RenderCallback(context);
}
// Recycle shadow map if empty.
if (!shadowMapContainsSomething)
{
renderTargetPool.Recycle(shadow.ShadowMap);
shadow.ShadowMap = null;
}
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.CameraNode = cameraNode;
context.Technique = null;
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.ReferenceNode = originalReferenceNode;
context.Object = null;
context.Data[RenderContextKeys.ShadowTileIndex] = null;
}
/// <summary>
/// Draws the texts.
/// </summary>
/// <param name="context">The render context.</param>
/// <remarks>
/// If <see cref="SpriteBatch"/> or <see cref="SpriteFont"/> are <see langword="null"/>, then
/// <see cref="Render"/> does nothing.
/// </remarks>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is <see langword="null"/>.
/// </exception>
public void Render(RenderContext context)
{
if (context == null)
throw new ArgumentNullException("context");
if (SpriteBatch == null || SpriteFont == null)
return;
context.Validate(SpriteBatch);
if (_texts2D.Count == 0 && _texts3D.Count == 0)
return;
if (_texts3D.Count > 0)
context.ThrowIfCameraMissing();
var savedRenderState = new RenderStateSnapshot(SpriteBatch.GraphicsDevice);
if (EnableDepthTest)
{
SpriteBatch.Begin(SpriteSortMode.Immediate, BlendState.AlphaBlend, SamplerState.LinearClamp, DepthStencilState.Default, RasterizerState.CullNone);
}
else
{
SpriteBatch.Begin();
}
// ----- Draw world space text.
if (_texts3D.Count > 0)
{
CameraNode cameraNode = context.CameraNode;
Matrix44F viewProjection = cameraNode.Camera.Projection * cameraNode.View;
Viewport viewport = SpriteBatch.GraphicsDevice.Viewport;
foreach (var textInfo in _texts3D)
{
// Transform position from world space to the viewport.
Vector3F pos = viewport.ProjectToViewport(textInfo.Position, viewProjection);
if (pos.Z < 0 || pos.Z > 1)
continue;
// Snap to pixels. Also add a small bias in one direction because when we draw text at
// certain positions (e.g. view space origin) and the presentation target width is an
// odd number, the pos will be exactly at pixel centers and due to numerical errors it
// would jitter between pixels if the camera moves slightly.
pos.X = (float)Math.Round(pos.X + 0.01f);
pos.Y = (float)Math.Round(pos.Y + 0.01f);
var textAsString = textInfo.Text as string;
if (!string.IsNullOrEmpty(textAsString))
{
var textOrigin = GetOrigin(textAsString, textInfo.RelativeOrigin);
SpriteBatch.DrawString(SpriteFont, textAsString, new Vector2(pos.X, pos.Y), textInfo.Color, 0, textOrigin, 1.0f, SpriteEffects.None, pos.Z);
}
else
{
var textAsStringBuilder = textInfo.Text as StringBuilder;
if (textAsStringBuilder != null && textAsStringBuilder.Length > 0)
{
var textOrigin = GetOrigin(textAsStringBuilder, textInfo.RelativeOrigin);
SpriteBatch.DrawString(SpriteFont, textAsStringBuilder, new Vector2(pos.X, pos.Y), textInfo.Color, 0, textOrigin, 1, SpriteEffects.None, pos.Z);
}
}
}
}
// ----- Draw screen space text.
foreach (var textInfo in _texts2D)
{
var textAsString = textInfo.Text as string;
if (!string.IsNullOrEmpty(textAsString))
{
var textOrigin = GetOrigin(textAsString, textInfo.RelativeOrigin);
SpriteBatch.DrawString(SpriteFont, textAsString, (Vector2)textInfo.Position, textInfo.Color, 0, textOrigin, 1, SpriteEffects.None, 0);
}
else
{
var textAsStringBuilder = textInfo.Text as StringBuilder;
if (textAsStringBuilder != null && textAsStringBuilder.Length > 0)
{
var textOrigin = GetOrigin(textAsStringBuilder, textInfo.RelativeOrigin);
SpriteBatch.DrawString(SpriteFont, textAsStringBuilder, (Vector2)textInfo.Position, textInfo.Color, 0, textOrigin, 1, SpriteEffects.None, 0);
}
}
}
SpriteBatch.End();
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
return;
context.Validate(_spriteBatch);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
// Camera properties
var cameraNode = context.CameraNode;
Matrix44F viewProjection = cameraNode.Camera.Projection * cameraNode.View;
var viewport = graphicsDevice.Viewport;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
SpriteSortMode sortMode;
switch (order)
{
case RenderOrder.Default:
sortMode = SpriteSortMode.Texture;
break;
case RenderOrder.FrontToBack:
sortMode = SpriteSortMode.FrontToBack;
break;
case RenderOrder.BackToFront:
sortMode = SpriteSortMode.BackToFront;
break;
case RenderOrder.UserDefined:
default:
sortMode = SpriteSortMode.Deferred;
break;
}
_spriteBatch.Begin(sortMode, graphicsDevice.BlendState, null, graphicsDevice.DepthStencilState, null);
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as SpriteNode;
if (node == null)
continue;
// SpriteNode is visible in current frame.
node.LastFrame = frame;
// Position, size, and origin in pixels.
Vector3F position = new Vector3F();
Vector2 size = new Vector2();
Vector2 origin = new Vector2();
var bitmapSprite = node.Sprite as ImageSprite;
if (bitmapSprite != null)
{
var packedTexture = bitmapSprite.Texture;
if (packedTexture != null)
{
// Project into viewport and snap to pixels.
position = viewport.ProjectToViewport(node.PoseWorld.Position, viewProjection);
position.X = (int)(position.X + 0.5f);
position.Y = (int)(position.Y + 0.5f);
// Get source rectangle (pixel bounds).
var sourceRectangle = packedTexture.GetBounds(node.AnimationTime);
size = new Vector2(sourceRectangle.Width, sourceRectangle.Height);
// Premultiply color.
Vector3F color3F = node.Color;
float alpha = node.Alpha;
Color color = new Color(color3F.X * alpha, color3F.Y * alpha, color3F.Z * alpha, alpha);
// Get absolute origin (relative to pixel bounds).
origin = (Vector2)node.Origin * size;
// Draw using SpriteBatch.
_spriteBatch.Draw(
packedTexture.TextureAtlas, new Vector2(position.X, position.Y), sourceRectangle,
color, node.Rotation, origin, (Vector2)node.Scale, SpriteEffects.None, position.Z);
}
}
else
{
var textSprite = node.Sprite as TextSprite;
if (textSprite != null)
{
var font = textSprite.Font ?? _spriteFont;
if (font != null)
{
// Text can be a string or StringBuilder.
var text = textSprite.Text as string;
if (text != null)
{
if (text.Length > 0)
{
// Project into viewport and snap to pixels.
position = viewport.ProjectToViewport(node.PoseWorld.Position, viewProjection);
position.X = (int)(position.X + 0.5f);
position.Y = (int)(position.Y + 0.5f);
// Premultiply color.
Vector3F color3F = node.Color;
float alpha = node.Alpha;
Color color = new Color(color3F.X * alpha, color3F.Y * alpha, color3F.Z * alpha, alpha);
// Get absolute origin (relative to pixel bounds).
size = font.MeasureString(text);
origin = (Vector2)node.Origin * size;
// Draw using SpriteBatch.
_spriteBatch.DrawString(
font, text, new Vector2(position.X, position.Y),
color, node.Rotation, origin, (Vector2)node.Scale,
SpriteEffects.None, position.Z);
}
}
else
{
var stringBuilder = textSprite.Text as StringBuilder;
if (stringBuilder != null && stringBuilder.Length > 0)
{
// Project into viewport and snap to pixels.
position = viewport.ProjectToViewport(node.PoseWorld.Position, viewProjection);
position.X = (int)(position.X + 0.5f);
position.Y = (int)(position.Y + 0.5f);
// Premultiply color.
Vector3F color3F = node.Color;
float alpha = node.Alpha;
Color color = new Color(color3F.X * alpha, color3F.Y * alpha, color3F.Z * alpha, alpha);
// Get absolute origin (relative to pixel bounds).
size = font.MeasureString(stringBuilder);
origin = (Vector2)node.Origin * size;
// Draw using SpriteBatch.
_spriteBatch.DrawString(
font, stringBuilder, new Vector2(position.X, position.Y),
color, node.Rotation, origin, (Vector2)node.Scale,
SpriteEffects.None, position.Z);
}
}
}
}
}
// Store bounds an depth for hit tests.
node.LastBounds = new Rectangle(
(int)(position.X - origin.X),
(int)(position.Y - origin.Y),
(int)(size.X * node.Scale.X),
(int)(size.Y * node.Scale.Y));
node.LastDepth = position.Z;
}
_spriteBatch.End();
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
float deltaTime = (float)context.DeltaTime.TotalSeconds;
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var renderTargetPool = graphicsService.RenderTargetPool;
var cameraNode = context.CameraNode;
Projection projection = cameraNode.Camera.Projection;
Pose view = cameraNode.PoseWorld.Inverse;
// Around the camera we push the waves down to avoid that the camera cuts the near plane.
// Get largest vector from camera to near plane corners.
float nearPlaneRadius =
new Vector3F(Math.Max(Math.Abs(projection.Right), Math.Abs(projection.Left)),
Math.Max(Math.Abs(projection.Top), Math.Abs(projection.Bottom)),
projection.Near
).Length;
var originalSourceTexture = context.SourceTexture;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
// Water surface is opaque.
graphicsDevice.BlendState = BlendState.Opaque;
#region ----- Common Effect Parameters -----
_parameterView.SetValue(view);
_parameterProjection.SetValue(projection);
_parameterCameraParameters.SetValue(new Vector4(
(Vector3)cameraNode.PoseWorld.Position,
cameraNode.Camera.Projection.Far));
var viewport = graphicsDevice.Viewport;
_parameterViewportSize.SetValue(new Vector2(viewport.Width, viewport.Height));
_parameterTime.SetValue((float)context.Time.TotalSeconds);
// Query ambient and directional lights.
var lightQuery = context.Scene.Query<GlobalLightQuery>(cameraNode, context);
Vector3F ambientLight = Vector3F.Zero;
if (lightQuery.AmbientLights.Count > 0)
{
var light = (AmbientLight)lightQuery.AmbientLights[0].Light;
ambientLight = light.Color * light.Intensity * light.HdrScale;
}
_parameterAmbientLight.SetValue((Vector3)ambientLight);
Vector3F directionalLightDirection = new Vector3F(0, -1, 0);
Vector3F directionalLightIntensity = Vector3F.Zero;
if (lightQuery.DirectionalLights.Count > 0)
{
var lightNode = lightQuery.DirectionalLights[0];
var light = (DirectionalLight)lightNode.Light;
directionalLightDirection = -lightNode.PoseWorld.Orientation.GetColumn(2);
directionalLightIntensity = light.Color * light.SpecularIntensity * light.HdrScale;
}
_parameterDirectionalLightDirection.SetValue((Vector3)directionalLightDirection);
_parameterDirectionalLightIntensity.SetValue((Vector3)directionalLightIntensity);
_parameterGBuffer0.SetValue(context.GBuffer0);
if (_parameterNoiseMap != null)
_parameterNoiseMap.SetValue(_noiseMap);
#endregion
#region ----- Fog Parameters -----
var fogNodes = context.Scene.Query<FogQuery>(cameraNode, context).FogNodes;
SetFogParameters(fogNodes, cameraNode, directionalLightDirection);
#endregion
_parameterProjectedGridParameters.SetValue(new Vector3(
ProjectedGridParameters.EdgeAttenuation,
ProjectedGridParameters.DistanceAttenuationStart,
ProjectedGridParameters.DistanceAttenuationEnd));
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as WaterNode;
if (node == null)
continue;
// Node is visible in current frame.
node.LastFrame = frame;
var data = node.RenderData as WaterRenderData;
if (data == null)
{
data = new WaterRenderData();
node.RenderData = data;
}
var water = node.Water;
bool isCameraUnderwater = node.EnableUnderwaterEffect && node.IsUnderwater(cameraNode.PoseWorld.Position);
#region ----- Wave bending -----
// Waves should not cut the near plane. --> Bend waves up or down if necessary.
// Limits
float upperLimit; // Waves must not move above this value.
float lowerLimit; // Waves must not move below this value.
// Bending fades in over interval [bendStart, bendEnd]:
// distance ≤ bendStart ............. Wave is bent up or down.
// bendStart < distance < bendEnd ... Lerp between normal wave and bent wave.
// distance ≥ bendEnd ............... Normal wave.
float bendStart = 1 * nearPlaneRadius;
float bendEnd = 10 * nearPlaneRadius;
if (!isCameraUnderwater)
{
// Bend waves down below the camera.
upperLimit = cameraNode.PoseWorld.Position.Y - nearPlaneRadius;
lowerLimit = -1e20f;
if (node.EnableUnderwaterEffect)
{
if (node.Waves == null || node.Waves.DisplacementMap == null)
{
// No displacement. The wave bending stuff does not work because the surface
// is usually not tessellated. We have to render the underwater geometry when
// camera near plane might cut the water surface.
if (node.Volume == null)
{
// Test water plane.
isCameraUnderwater = (cameraNode.PoseWorld.Position.Y - nearPlaneRadius) < node.PoseWorld.Position.Y;
}
else
{
// Test water AABB.
var aabb = node.Aabb;
aabb.Minimum -= new Vector3F(nearPlaneRadius);
aabb.Maximum += new Vector3F(nearPlaneRadius);
isCameraUnderwater = GeometryHelper.HaveContact(aabb, cameraNode.PoseWorld.Position);
}
}
}
}
else
{
// Camera is underwater, bend triangles up above camera.
upperLimit = 1e20f;
lowerLimit = cameraNode.PoseWorld.Position.Y + nearPlaneRadius;
}
_parameterCameraMisc.SetValue(new Vector4(upperLimit, lowerLimit, bendStart, bendEnd));
#endregion
// Update the submesh for the given water volume.
data.UpdateSubmesh(graphicsService, node);
#region ----- Scroll Normal Maps -----
// We update the normal map offsets once(!) per frame.
// Note: We could skip the offsets and compute all in the shader using absolute
// time instead of deltaTime, but then the user cannot change the NormalMapVelocity
// smoothly.
if (data.LastNormalUpdateFrame != frame)
{
data.LastNormalUpdateFrame = frame;
var baseVelocity = (node.Flow != null) ? node.Flow.BaseVelocity : Vector3F.Zero;
// Increase offset.
// (Note: We have to subtract value and divide by scale because if the normal
// should scroll to the right, we have to move the texcoords in the other direction.)
data.NormalMapOffset0.X -= (water.NormalMap0Velocity.X + baseVelocity.X) * deltaTime / water.NormalMap0Scale;
data.NormalMapOffset0.Y -= (water.NormalMap0Velocity.Z + baseVelocity.Y) * deltaTime / water.NormalMap0Scale;
data.NormalMapOffset1.X -= (water.NormalMap1Velocity.X + baseVelocity.X) * deltaTime / water.NormalMap1Scale;
data.NormalMapOffset1.Y -= (water.NormalMap1Velocity.Z + baseVelocity.Y) * deltaTime / water.NormalMap1Scale;
// Keep only the fractional part to avoid overflow.
data.NormalMapOffset0.X = MathHelper.Frac(data.NormalMapOffset0.X);
data.NormalMapOffset0.Y = MathHelper.Frac(data.NormalMapOffset0.Y);
data.NormalMapOffset1.X = MathHelper.Frac(data.NormalMapOffset1.X);
data.NormalMapOffset1.Y = MathHelper.Frac(data.NormalMapOffset1.Y);
}
#endregion
_parameterSurfaceLevel.SetValue(node.PoseWorld.Position.Y);
#region ----- Reflection Parameters -----
if (node.PlanarReflection != null
&& node.PlanarReflection.ActualIsEnabled
&& node.PlanarReflection.RenderToTexture.Texture is Texture2D)
{
// Planar reflection.
var renderToTexture = node.PlanarReflection.RenderToTexture;
var texture = (Texture2D)renderToTexture.Texture;
_parameterReflectionTypeParameters.SetValue(new Vector2(0, 1));
_parameterReflectionMatrix.SetValue((Matrix)renderToTexture.TextureMatrix);
_parameterReflectionTextureSize.SetValue(new Vector2(texture.Width, texture.Height));
if (_parameterPlanarReflectionMap != null)
_parameterPlanarReflectionMap.SetValue(texture);
_parameterReflectionParameters.SetValue(new Vector4(
(Vector3)water.ReflectionColor,
water.ReflectionDistortion));
}
else if (node.SkyboxReflection != null)
{
// Cube map reflection.
var rgbmEncoding = node.SkyboxReflection.Encoding as RgbmEncoding;
float rgbmMax = 1;
if (rgbmEncoding != null)
rgbmMax = GraphicsHelper.ToGamma(rgbmEncoding.Max);
else if (!(node.SkyboxReflection.Encoding is SRgbEncoding))
throw new NotImplementedException("The reflected skybox must be encoded using sRGB or RGBM.");
_parameterReflectionTypeParameters.SetValue(new Vector2(1, rgbmMax));
// Cube maps are left handed --> Sample with inverted z. (Otherwise, the
// cube map and objects or texts in it are mirrored.)
var mirrorZ = Matrix44F.CreateScale(1, 1, -1);
Matrix33F orientation = node.SkyboxReflection.PoseWorld.Orientation;
_parameterReflectionMatrix.SetValue((Matrix)(new Matrix44F(orientation, Vector3F.Zero) * mirrorZ));
if (_parameterCubeReflectionMap != null)
_parameterCubeReflectionMap.SetValue(node.SkyboxReflection.Texture);
_parameterReflectionParameters.SetValue(new Vector4(
(Vector3)(water.ReflectionColor * node.SkyboxReflection.Color),
water.ReflectionDistortion));
}
else
{
// No reflection texture. The reflection shows only the ReflectionColor.
_parameterReflectionTypeParameters.SetValue(new Vector2(-1, 1));
_parameterReflectionParameters.SetValue(new Vector4(
(Vector3)water.ReflectionColor,
water.ReflectionDistortion));
}
#endregion
#region ----- Refraction Parameters -----
// If we do not have a source texture, resolve the current render target
// and immediately rebuilt it.
if (context.SourceTexture == null && context.RenderTarget != null)
{
// Get RebuildZBufferRenderer from RenderContext.
RebuildZBufferRenderer rebuildZBufferRenderer = null;
object obj;
if (context.Data.TryGetValue(RenderContextKeys.RebuildZBufferRenderer, out obj))
rebuildZBufferRenderer = obj as RebuildZBufferRenderer;
// If we didn't find the renderer in the context, use a default instance.
if (rebuildZBufferRenderer == null)
{
if (_defaultRebuildZBufferRenderer == null)
_defaultRebuildZBufferRenderer = new RebuildZBufferRenderer(graphicsService);
rebuildZBufferRenderer = _defaultRebuildZBufferRenderer;
}
context.SourceTexture = context.RenderTarget;
context.RenderTarget = renderTargetPool.Obtain2D(new RenderTargetFormat(context.RenderTarget));
graphicsDevice.SetRenderTarget(context.RenderTarget);
graphicsDevice.Viewport = context.Viewport;
rebuildZBufferRenderer.Render(context, context.SourceTexture);
}
_parameterRefractionTexture.SetValue(context.SourceTexture);
_parameterRefractionParameters.SetValue(new Vector4(
((Vector3)water.RefractionColor),
water.RefractionDistortion));
#endregion
#region ----- Other Water Effect Parameters -----
if (water.NormalMap0 != null)
{
if (_parameterNormalMap0 != null)
_parameterNormalMap0.SetValue(water.NormalMap0);
_parameterNormalMap0Parameters.SetValue(new Vector4(
1 / water.NormalMap0Scale,
data.NormalMapOffset0.X,
data.NormalMapOffset0.Y,
water.NormalMap0Strength));
}
else
{
if (_parameterNormalMap0 != null)
_parameterNormalMap0.SetValue(_graphicsService.GetDefaultNormalTexture());
_parameterNormalMap0Parameters.SetValue(new Vector4(1, 0, 0, 0));
}
if (water.NormalMap1 != null)
{
if (_parameterNormalMap1 != null)
_parameterNormalMap1.SetValue(water.NormalMap1);
_parameterNormalMap1Parameters.SetValue(new Vector4(
1 / water.NormalMap1Scale,
data.NormalMapOffset1.X,
data.NormalMapOffset1.Y,
water.NormalMap1Strength));
}
else
{
if (_parameterNormalMap1 != null)
_parameterNormalMap1.SetValue(_graphicsService.GetDefaultNormalTexture());
_parameterNormalMap1Parameters.SetValue(new Vector4(1, 0, 0, 0));
}
_parameterSpecularParameters.SetValue(new Vector4((Vector3)water.SpecularColor, water.SpecularPower));
_parameterUnderwaterFogParameters.SetValue((Vector3)water.UnderwaterFogDensity);
_parameterFresnelParameters.SetValue(new Vector3(water.FresnelBias, water.FresnelScale, water.FresnelPower));
_parameterIntersectionSoftness.SetValue(water.IntersectionSoftness);
// We apply some arbitrary scale factors to the water and scatter colors to
// move the values into a similar range from the user's perspective.
_parameterWaterColor.SetValue((Vector3)water.WaterColor / 10);
_parameterScatterColor.SetValue((Vector3)water.ScatterColor);
if (_parameterFoamMap != null)
{
_parameterFoamMap.SetValue(water.FoamMap);
_parameterFoamParameters0.SetValue(new Vector4(
(Vector3)water.FoamColor,
1 / water.FoamMapScale));
_parameterFoamParameters1.SetValue(new Vector4(
water.FoamDistortion,
water.FoamShoreIntersection,
// Enable crest foam only if we have waves.
node.Waves != null ? water.FoamCrestMin : float.MaxValue,
water.FoamCrestMax));
}
_parameterCausticsSampleCount.SetValue(water.CausticsSampleCount);
_parameterCausticsParameters.SetValue(new Vector4(
water.CausticsSampleOffset,
water.CausticsDistortion,
water.CausticsPower,
water.CausticsIntensity));
#endregion
#region ----- Wave Map -----
var waves = node.Waves;
// The displacement map can be null but the normal map must not be null.
if (waves != null && waves.NormalMap != null)
{
// Type: 0 = Tiling, 1 = Clamp.
float waveType;
if (waves.IsTiling)
waveType = 0;
else
waveType = 1;
_parameterWaveMapParameters.SetValue(new Vector4(
1.0f / waves.TileSize, // Scale
0.5f - waves.TileCenter.X / waves.TileSize, // Offset X
0.5f - waves.TileCenter.Z / waves.TileSize, // Offset Y
waveType));
if (_parameterDisplacementTexture != null)
{
if (waves.DisplacementMap != null)
_parameterDisplacementTexture.SetValue(waves.DisplacementMap);
else
_parameterDisplacementTexture.SetValue(graphicsService.GetDefaultTexture2DBlack4F());
}
_parameterWaveMapSize.SetValue(new Vector2(
waves.NormalMap.Width,
waves.NormalMap.Height));
if (_parameterWaveNormalMap != null)
_parameterWaveNormalMap.SetValue(waves.NormalMap);
}
else
{
_parameterWaveMapParameters.SetValue(new Vector4(0, 0, 0, 0));
}
#endregion
#region ----- Flow -----
if (node.Flow != null)
{
var flow = node.Flow;
float flowMapSpeed = (flow.FlowMap != null) ? flow.FlowMapSpeed : 0;
_parameterFlowParameters0.SetValue(new Vector4(flow.SurfaceSlopeSpeed, flowMapSpeed, flow.CycleDuration, flow.MaxSpeed));
_parameterFlowParameters1.SetValue(new Vector3(flow.MinStrength, 1 / flow.NoiseMapScale, flow.NoiseMapStrength));
if (_parameterFlowMap != null)
_parameterFlowMap.SetValue(flow.FlowMap);
// Get world space (x, z) to texture space matrix.
Aabb aabb = node.Shape.GetAabb();
Vector3F extent = aabb.Extent;
Matrix44F m = Matrix44F.CreateScale(1 / extent.X, 1, 1 / extent.Z)
* Matrix44F.CreateTranslation(-aabb.Minimum.X, 0, -aabb.Minimum.Z)
* Matrix44F.CreateScale(1 / node.ScaleLocal.X, 1, 1 / node.ScaleLocal.Z)
* node.PoseWorld.Inverse;
// We use a 3x3 2d scale/rotation/translation matrix, ignoring the y component.
_parameterFlowMapTextureMatrix.SetValue(new Matrix(m.M00, m.M20, 0, 0,
m.M02, m.M22, 0, 0,
m.M03, m.M23, 1, 0,
0, 0, 0, 0));
// Get local flow direction to world flow direction matrix.
// We use a 2x2 2d rotation matrix, ignoring the y component.
var r = node.PoseWorld.Orientation;
_parameterFlowMapWorldMatrix.SetValue(new Matrix(r.M00, r.M20, 0, 0,
r.M02, r.M22, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0));
}
else
{
_parameterFlowParameters0.SetValue(new Vector4(0, 0, 0, 0));
_parameterFlowParameters1.SetValue(new Vector3(0, 0, 0));
}
#endregion
if (isCameraUnderwater)
RenderUnderwaterGeometry(node, cameraNode);
RenderSurface(node, cameraNode, isCameraUnderwater);
}
// Reset texture effect parameters.
_parameterGBuffer0.SetValue((Texture2D)null);
_parameterRefractionTexture.SetValue((Texture2D)null);
if (_parameterPlanarReflectionMap != null)
_parameterPlanarReflectionMap.SetValue((Texture2D)null);
if (_parameterCubeReflectionMap != null)
_parameterCubeReflectionMap.SetValue((TextureCube)null);
if (_parameterNormalMap0 != null)
_parameterNormalMap0.SetValue((Texture2D)null);
if (_parameterNormalMap1 != null)
_parameterNormalMap1.SetValue((Texture2D)null);
if (_parameterDisplacementTexture != null)
_parameterDisplacementTexture.SetValue((Texture2D)null);
if (_parameterNoiseMap != null)
_parameterNoiseMap.SetValue((Texture2D)null);
if (_parameterWaveNormalMap != null)
_parameterWaveNormalMap.SetValue((Texture2D)null);
if (_parameterFlowMap != null)
_parameterFlowMap.SetValue((Texture2D)null);
// This seems to be necessary because the Displacement Texture (vertex texture!)
// is not automatically removed from the texture stage, and the WaterWavesRenderer
// cannot write into it. XNA Bug!?
_passProjectedGrid.Apply();
savedRenderState.Restore();
// Restore original render context.
if (originalSourceTexture == null)
{
// Current render target has been resolved and used as source texture.
// A new render target (from pool) has been set. (See region "Refraction Parameters".)
// --> Previous render target needs to be recycled.
renderTargetPool.Recycle(context.SourceTexture);
}
context.SourceTexture = originalSourceTexture;
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
context.ThrowIfCameraMissing();
context.ThrowIfSceneMissing();
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalReferenceNode = context.ReferenceNode;
// Camera properties
var cameraNode = context.CameraNode;
var cameraPose = cameraNode.PoseWorld;
var projection = cameraNode.Camera.Projection;
if (!(projection is PerspectiveProjection))
{
throw new NotImplementedException(
"Cascaded shadow maps not yet implemented for scenes with orthographic camera.");
}
float fieldOfViewY = projection.FieldOfViewY;
float aspectRatio = projection.AspectRatio;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
// The scene node renderer should use the light camera instead of the player camera.
context.CameraNode = _orthographicCameraNode;
context.Technique = "Directional";
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
{
continue;
}
var shadow = lightNode.Shadow as CascadedShadow;
if (shadow == null)
{
continue;
}
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
var format = new RenderTargetFormat(
shadow.PreferredSize * shadow.NumberOfCascades,
shadow.PreferredSize,
false,
shadow.Prefer16Bit ? SurfaceFormat.HalfSingle : SurfaceFormat.Single,
DepthFormat.Depth24);
bool allLocked = shadow.IsCascadeLocked[0] && shadow.IsCascadeLocked[1] && shadow.IsCascadeLocked[2] && shadow.IsCascadeLocked[3];
if (shadow.ShadowMap == null)
{
shadow.ShadowMap = graphicsService.RenderTargetPool.Obtain2D(format);
allLocked = false; // Need to render shadow map.
}
// If we can reuse the whole shadow map texture, abort early.
if (allLocked)
{
continue;
}
_csmSplitDistances[0] = projection.Near;
_csmSplitDistances[1] = shadow.Distances.X;
_csmSplitDistances[2] = shadow.Distances.Y;
_csmSplitDistances[3] = shadow.Distances.Z;
_csmSplitDistances[4] = shadow.Distances.W;
// (Re-)Initialize the array for cached matrices in the CascadedShadow.
if (shadow.ViewProjections == null || shadow.ViewProjections.Length < shadow.NumberOfCascades)
{
shadow.ViewProjections = new Matrix[shadow.NumberOfCascades];
}
// Initialize the projection matrices to an empty matrix.
// The unused matrices should not contain valid projections because
// CsmComputeSplitOptimized in CascadedShadowMask.fxh should not choose
// the wrong cascade.
for (int j = 0; j < shadow.ViewProjections.Length; j++)
{
if (!shadow.IsCascadeLocked[j]) // Do not delete cached info for cached cascade.
{
shadow.ViewProjections[j] = new Matrix();
}
}
// If some cascades are cached, we have to create a new shadow map and copy
// the old cascades into the new shadow map.
if (shadow.IsCascadeLocked[0] || shadow.IsCascadeLocked[1] || shadow.IsCascadeLocked[2] || shadow.IsCascadeLocked[3])
{
var oldShadowMap = shadow.ShadowMap;
shadow.ShadowMap = graphicsService.RenderTargetPool.Obtain2D(new RenderTargetFormat(oldShadowMap));
graphicsDevice.SetRenderTarget(shadow.ShadowMap);
graphicsDevice.Clear(Color.White);
var spriteBatch = graphicsService.GetSpriteBatch();
spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.Opaque, SamplerState.PointClamp, DepthStencilState.None, RasterizerState.CullNone);
for (int cascade = 0; cascade < shadow.NumberOfCascades; cascade++)
{
if (shadow.IsCascadeLocked[cascade])
{
var viewport = GetViewport(shadow, cascade);
var rectangle = new Rectangle(viewport.X, viewport.Y, viewport.Width, viewport.Height);
spriteBatch.Draw(oldShadowMap, rectangle, rectangle, Color.White);
}
}
spriteBatch.End();
graphicsService.RenderTargetPool.Recycle(oldShadowMap);
}
else
{
graphicsDevice.SetRenderTarget(shadow.ShadowMap);
graphicsDevice.Clear(Color.White);
}
context.RenderTarget = shadow.ShadowMap;
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
context.ReferenceNode = lightNode;
context.Object = shadow;
context.ShadowNear = 0; // Obsolete: Only kept for backward compatibility.
bool shadowMapContainsSomething = false;
for (int split = 0; split < shadow.NumberOfCascades; split++)
{
if (shadow.IsCascadeLocked[split])
{
continue;
}
context.Data[RenderContextKeys.ShadowTileIndex] = CubeMapShadowMapRenderer.BoxedIntegers[split];
// near/far of this split.
float near = _csmSplitDistances[split];
float far = Math.Max(_csmSplitDistances[split + 1], near + Numeric.EpsilonF);
// Create a view volume for this split.
_splitVolume.SetFieldOfView(fieldOfViewY, aspectRatio, near, far);
// Find the bounding sphere of the split camera frustum.
Vector3 center;
float radius;
GetBoundingSphere(_splitVolume, out center, out radius);
// Extend radius to get enough border for filtering.
int shadowMapSize = shadow.ShadowMap.Height;
// We could extend by (ShadowMapSize + BorderTexels) / ShadowMapSize;
// Add at least 1 texel. (This way, shadow mask shader can clamp uv to
// texture rect in without considering half texel border to avoid sampling outside..)
radius *= (float)(shadowMapSize + 1) / shadowMapSize;
// Convert center to light space.
Pose lightPose = lightNode.PoseWorld;
center = cameraPose.ToWorldPosition(center);
center = lightPose.ToLocalPosition(center);
// Snap center to texel positions to avoid shadow swimming.
SnapPositionToTexels(ref center, 2 * radius, shadowMapSize);
// Convert center back to world space.
center = lightPose.ToWorldPosition(center);
Matrix orientation = lightPose.Orientation;
Vector3 backward = orientation.GetColumn(2);
var orthographicProjection = (OrthographicProjection)_orthographicCameraNode.Camera.Projection;
// Create a tight orthographic frustum around the cascade's bounding sphere.
orthographicProjection.SetOffCenter(-radius, radius, -radius, radius, 0, 2 * radius);
Vector3 cameraPosition = center + radius * backward;
Pose frustumPose = new Pose(cameraPosition, orientation);
Pose view = frustumPose.Inverse;
shadow.ViewProjections[split] = (Matrix)view * orthographicProjection;
// Convert depth bias from "texel" to light space [0, 1] depth.
// Minus sign to move receiver depth closer to light. Divide by depth to normalize.
float unitsPerTexel = orthographicProjection.Width / shadow.ShadowMap.Height;
shadow.EffectiveDepthBias[split] = -shadow.DepthBias[split] * unitsPerTexel / orthographicProjection.Depth;
// Convert normal offset from "texel" to world space.
shadow.EffectiveNormalOffset[split] = shadow.NormalOffset[split] * unitsPerTexel;
// For rendering the shadow map, move near plane back by MinLightDistance
// to catch occluders in front of the cascade.
orthographicProjection.Near = -shadow.MinLightDistance;
_orthographicCameraNode.PoseWorld = frustumPose;
// Set a viewport to render a tile in the texture atlas.
graphicsDevice.Viewport = GetViewport(shadow, split);
context.Viewport = graphicsDevice.Viewport;
shadowMapContainsSomething |= RenderCallback(context);
}
// Recycle shadow map if empty.
if (!shadowMapContainsSomething)
{
graphicsService.RenderTargetPool.Recycle(shadow.ShadowMap);
shadow.ShadowMap = null;
}
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.CameraNode = cameraNode;
context.ShadowNear = float.NaN;
context.Technique = null;
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.ReferenceNode = originalReferenceNode;
context.Object = null;
context.Data[RenderContextKeys.ShadowTileIndex] = null;
}
/// <inheritdoc/>
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
return;
context.Validate(_effect);
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
//var renderTargetPool = graphicsService.RenderTargetPool;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.None;
int frame = context.Frame;
for (int nodeIndex = 0; nodeIndex < numberOfNodes; nodeIndex++)
{
var node = nodes[nodeIndex] as WaterNode;
if (node == null)
continue;
var waves = node.Waves as OceanWaves;
if (waves == null)
continue;
// We update the waves only once per frame.
if (waves.LastFrame == frame)
continue;
waves.LastFrame = frame;
float time = (float)context.Time.TotalSeconds;
// Initialize h0 spectrum. Perform CPU FFT.
waves.Update(graphicsDevice, time);
int n = waves.TextureSize;
// Allocate textures in the first frame and when the TextureSize was changed.
if (waves.DisplacementSpectrum == null || waves.DisplacementSpectrum.Width != n)
{
waves.DisplacementSpectrum.SafeDispose();
waves.NormalSpectrum.SafeDispose();
waves.DisplacementMap.SafeDispose();
waves.NormalMap.SafeDispose();
waves.DisplacementSpectrum = new RenderTarget2D(_graphicsService.GraphicsDevice, n, n, false, SurfaceFormat.Vector4, DepthFormat.None);
waves.NormalSpectrum = new RenderTarget2D(_graphicsService.GraphicsDevice, n, n, false, SurfaceFormat.Vector4, DepthFormat.None);
waves.DisplacementMap = new RenderTarget2D(_graphicsService.GraphicsDevice, n, n, false, SurfaceFormat.Vector4, DepthFormat.None);
waves.NormalMap = new RenderTarget2D(
_graphicsService.GraphicsDevice,
n,
n,
true,
SurfaceFormat.Color,
DepthFormat.None);
}
// Create spectrum (h, D, N) for current time from h0.
_renderTargetBindings[0] = new RenderTargetBinding(waves.DisplacementSpectrum);
_renderTargetBindings[1] = new RenderTargetBinding(waves.NormalSpectrum);
graphicsDevice.SetRenderTargets(_renderTargetBindings);
_parameterSize.SetValue((float)n);
_parameterSpectrumParameters.SetValue(new Vector4(
waves.TileSize,
waves.Gravity,
time,
waves.HeightScale));
_parameterSourceTexture.SetValue(waves.H0Spectrum);
_passSpectrum.Apply();
graphicsDevice.DrawFullScreenQuad();
// Do inverse FFT.
_fft.Process(
context,
false,
waves.DisplacementSpectrum,
waves.NormalSpectrum,
(RenderTarget2D)waves.DisplacementMap,
(RenderTarget2D)waves.NormalMap,
waves.Choppiness);
#region ----- Old Debugging Code -----
// Create textures from CPU FFT data for debug visualization.
//n = waves.CpuSize;
//var s0Data = new Vector4[n * n];
//var s1Data = new Vector4[n * n];
//var s0 = new RenderTarget2D(_graphicsService.GraphicsDevice, n, n, false, SurfaceFormat.Vector4, DepthFormat.None);
//var s1 = new RenderTarget2D(_graphicsService.GraphicsDevice, n, n, false, SurfaceFormat.Vector4, DepthFormat.None);
//for (int y = 0; y < n; y++)
//{
// for (int x = 0; x < n; x++)
// {
//s0Data[y * n + x] = new Vector4(
// -waves._D[x, y].X * waves.Choppiness,
// waves._h[x, y].X * 1,
// -waves._D[x, y].Y * waves.Choppiness,
// 1);
//s1Data[y * n + x] = new Vector4(
// waves._N[x, y].X,
// waves._N[x, y].Y,
// 0,
// 0);
// }
//}
//s0.SetData(s0Data);
//s1.SetData(s1Data);
//WaterSample._t0 = s0;
//WaterSample._t1 = waves.DisplacementMap;
#endregion
}
savedRenderState.Restore();
graphicsDevice.SetRenderTarget(null);
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
_renderTargetBindings[0] = default(RenderTargetBinding);
_renderTargetBindings[1] = default(RenderTargetBinding);
// Reset the texture stages. If a floating point texture is set, we get exceptions
// when a sampler with bilinear filtering is set.
#if !MONOGAME
graphicsDevice.ResetTextures();
#endif
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.BlendState = GraphicsHelper.BlendStateAdd;
var viewport = graphicsDevice.Viewport;
_parameterViewportSize.SetValue(new Vector2(viewport.Width, viewport.Height));
_parameterGBuffer0.SetValue(context.GBuffer0);
_parameterGBuffer1.SetValue(context.GBuffer1);
var cameraNode = context.CameraNode;
Matrix viewProjection = (Matrix)cameraNode.View * cameraNode.Camera.Projection;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
var isHdrEnabled = context.IsHdrEnabled();
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
continue;
var light = lightNode.Light as AmbientLight;
if (light == null)
continue;
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
float hdrScale = isHdrEnabled ? light.HdrScale : 1;
_parameterLightColor.SetValue((Vector3)light.Color * light.Intensity * hdrScale);
_parameterHemisphericAttenuation.SetValue(light.HemisphericAttenuation);
Vector3F upWorld = lightNode.PoseWorld.ToWorldDirection(Vector3F.Up);
_parameterUp.SetValue((Vector3)upWorld);
if (lightNode.Clip != null)
{
var data = lightNode.RenderData as LightRenderData;
if (data == null)
{
data = new LightRenderData();
lightNode.RenderData = data;
}
data.UpdateClipSubmesh(context.GraphicsService, lightNode);
graphicsDevice.DepthStencilState = GraphicsHelper.DepthStencilStateOnePassStencilFail;
graphicsDevice.BlendState = GraphicsHelper.BlendStateNoColorWrite;
_parameterWorldViewProjection.SetValue((Matrix)data.ClipMatrix * viewProjection);
_passClip.Apply();
data.ClipSubmesh.Draw();
graphicsDevice.DepthStencilState = lightNode.InvertClip
? GraphicsHelper.DepthStencilStateStencilEqual0
: GraphicsHelper.DepthStencilStateStencilNotEqual0;
graphicsDevice.BlendState = GraphicsHelper.BlendStateAdd;
}
else
{
graphicsDevice.DepthStencilState = DepthStencilState.None;
}
_passLight.Apply();
graphicsDevice.DrawFullScreenQuad();
}
savedRenderState.Restore();
}
/// <summary>
/// Draws the points.
/// </summary>
/// <param name="context">The render context.</param>
/// <remarks>
/// If <see cref="Effect"/> is <see langword="null"/>, then <see cref="Render"/> does nothing.
/// </remarks>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is <see langword="null"/>.
/// </exception>
public void Render(RenderContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (Effect == null)
{
return;
}
int numberOfPoints = _points.Count;
if (numberOfPoints <= 0)
{
return;
}
context.Validate(Effect);
context.ThrowIfCameraMissing();
// Render state.
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullNone;
// Reset the texture stages. If a floating point texture is set, we get exceptions
// when a sampler with bilinear filtering is set.
graphicsDevice.ResetTextures();
// Effect parameters.
Effect.Alpha = 1;
Effect.DiffuseColor = new Vector3(1, 1, 1);
Effect.LightingEnabled = false;
Effect.TextureEnabled = false;
Effect.VertexColorEnabled = true;
Effect.World = Matrix.Identity;
Effect.View = Matrix.Identity;
Effect.Projection = Matrix.Identity;
Effect.CurrentTechnique.Passes[0].Apply();
// Get WorldViewProjection matrix.
Matrix view = (Matrix)context.CameraNode.View;
Matrix projection = context.CameraNode.Camera.Projection;
Matrix wvp = Matrix.Multiply(view, projection);
// The x and y point size relative to the viewport.
Viewport viewport = graphicsDevice.Viewport;
float sizeX = PointSize / viewport.Width;
float sizeY = sizeX * viewport.Width / viewport.Height;
// Resize buffer if necessary.
ResizeBuffer(graphicsDevice, numberOfPoints);
// Submit points. The loop is only needed if we have more points than can
// be submitted with one draw call.
var startPointIndex = 0;
while (startPointIndex < numberOfPoints)
{
// Number of points in this batch.
int pointsPerBatch = Math.Min(numberOfPoints - startPointIndex, _buffer.Length / 6);
// Create vertices for points. All positions are directly in clip space!
for (int i = 0; i < pointsPerBatch; i++)
{
var point = _points[startPointIndex + i];
// Transform point position to clip space.
Vector3 positionWorld = (Vector3)point.Position;
Vector3 positionClip;
Vector3.Transform(ref positionWorld, ref wvp, out positionClip);
float w = (float)((double)positionWorld.X * wvp.M14 + (double)positionWorld.Y * wvp.M24 + (double)positionWorld.Z * wvp.M34 + wvp.M44);
// Homogeneous divide.
positionClip /= w;
// 2 triangles create a point quad. Clip space goes from -1 to 1, therefore
// we do not need to divide sizeX and sizeY by 2.
Vector3 bottomLeft = positionClip + new Vector3(-sizeX, +sizeY, 0);
Vector3 bottomRight = positionClip + new Vector3(+sizeX, +sizeY, 0);
Vector3 topLeft = positionClip + new Vector3(-sizeX, -sizeY, 0);
Vector3 topRight = positionClip + new Vector3(+sizeX, -sizeY, 0);
_buffer[i * 6 + 0].Position = bottomLeft;
_buffer[i * 6 + 0].Color = point.Color;
_buffer[i * 6 + 1].Position = bottomRight;
_buffer[i * 6 + 1].Color = point.Color;
_buffer[i * 6 + 2].Position = topLeft;
_buffer[i * 6 + 2].Color = point.Color;
_buffer[i * 6 + 3].Position = bottomRight;
_buffer[i * 6 + 3].Color = point.Color;
_buffer[i * 6 + 4].Position = topRight;
_buffer[i * 6 + 4].Color = point.Color;
_buffer[i * 6 + 5].Position = topLeft;
_buffer[i * 6 + 5].Color = point.Color;
}
// Draw triangles.
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleList, _buffer, 0, pointsPerBatch * 2);
startPointIndex += pointsPerBatch;
}
savedRenderState.Restore();
}
private void VisualizeBuffer(int level, RenderContext context, int passIndex)
{
if (context == null)
throw new ArgumentNullException("context");
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var originalRenderState = new RenderStateSnapshot(graphicsDevice);
var viewport = graphicsDevice.Viewport;
_parameterTargetSize.SetValue(new Vector2(viewport.Width, viewport.Height));
_parameterDebugLevel.SetValue((float)level);
_effect.CurrentTechnique = _techniqueVisualize;
_techniqueVisualize.Passes[passIndex].Apply();
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
// Do not override blend state: Use current blend state.
graphicsDevice.DrawFullScreenQuad();
originalRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
context.ThrowIfCameraMissing();
context.ThrowIfSceneMissing();
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalReferenceNode = context.ReferenceNode;
// Camera properties
var cameraNode = context.CameraNode;
var cameraPose = cameraNode.PoseWorld;
var projection = cameraNode.Camera.Projection;
if (!(projection is PerspectiveProjection))
throw new NotImplementedException(
"Cascaded shadow maps not yet implemented for scenes with orthographic camera.");
float fieldOfViewY = projection.FieldOfViewY;
float aspectRatio = projection.AspectRatio;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
// The scene node renderer should use the light camera instead of the player camera.
context.CameraNode = _orthographicCameraNode;
context.Technique = "Directional";
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
continue;
var shadow = lightNode.Shadow as CascadedShadow;
if (shadow == null)
continue;
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
var format = new RenderTargetFormat(
shadow.PreferredSize * shadow.NumberOfCascades,
shadow.PreferredSize,
false,
shadow.Prefer16Bit ? SurfaceFormat.HalfSingle : SurfaceFormat.Single,
DepthFormat.Depth24);
bool allLocked = shadow.IsCascadeLocked[0] && shadow.IsCascadeLocked[1] && shadow.IsCascadeLocked[2] && shadow.IsCascadeLocked[3];
if (shadow.ShadowMap == null)
{
shadow.ShadowMap = graphicsService.RenderTargetPool.Obtain2D(format);
allLocked = false; // Need to render shadow map.
}
// If we can reuse the whole shadow map texture, abort early.
if (allLocked)
continue;
_csmSplitDistances[0] = projection.Near;
_csmSplitDistances[1] = shadow.Distances.X;
_csmSplitDistances[2] = shadow.Distances.Y;
_csmSplitDistances[3] = shadow.Distances.Z;
_csmSplitDistances[4] = shadow.Distances.W;
// (Re-)Initialize the array for cached matrices in the CascadedShadow.
if (shadow.ViewProjections == null || shadow.ViewProjections.Length < shadow.NumberOfCascades)
shadow.ViewProjections = new Matrix[shadow.NumberOfCascades];
// Initialize the projection matrices to an empty matrix.
// The unused matrices should not contain valid projections because
// CsmComputeSplitOptimized in CascadedShadowMask.fxh should not choose
// the wrong cascade.
for (int j = 0; j < shadow.ViewProjections.Length; j++)
{
if (!shadow.IsCascadeLocked[j]) // Do not delete cached info for cached cascade.
shadow.ViewProjections[j] = new Matrix();
}
// If some cascades are cached, we have to create a new shadow map and copy
// the old cascades into the new shadow map.
if (shadow.IsCascadeLocked[0] || shadow.IsCascadeLocked[1] || shadow.IsCascadeLocked[2] || shadow.IsCascadeLocked[3])
{
var oldShadowMap = shadow.ShadowMap;
shadow.ShadowMap = graphicsService.RenderTargetPool.Obtain2D(new RenderTargetFormat(oldShadowMap));
graphicsDevice.SetRenderTarget(shadow.ShadowMap);
graphicsDevice.Clear(Color.White);
var spriteBatch = graphicsService.GetSpriteBatch();
spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.Opaque, SamplerState.PointClamp, DepthStencilState.None, RasterizerState.CullNone);
for (int cascade = 0; cascade < shadow.NumberOfCascades; cascade++)
{
if (shadow.IsCascadeLocked[cascade])
{
var viewport = GetViewport(shadow, cascade);
var rectangle = new Rectangle(viewport.X, viewport.Y, viewport.Width, viewport.Height);
spriteBatch.Draw(oldShadowMap, rectangle, rectangle, Color.White);
}
}
spriteBatch.End();
graphicsService.RenderTargetPool.Recycle(oldShadowMap);
}
else
{
graphicsDevice.SetRenderTarget(shadow.ShadowMap);
graphicsDevice.Clear(Color.White);
}
context.RenderTarget = shadow.ShadowMap;
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
context.ReferenceNode = lightNode;
context.Object = shadow;
context.ShadowNear = 0; // Obsolete: Only kept for backward compatibility.
bool shadowMapContainsSomething = false;
for (int split = 0; split < shadow.NumberOfCascades; split++)
{
if (shadow.IsCascadeLocked[split])
continue;
context.Data[RenderContextKeys.ShadowTileIndex] = CubeMapShadowMapRenderer.BoxedIntegers[split];
// near/far of this split.
float near = _csmSplitDistances[split];
float far = Math.Max(_csmSplitDistances[split + 1], near + Numeric.EpsilonF);
// Create a view volume for this split.
_splitVolume.SetFieldOfView(fieldOfViewY, aspectRatio, near, far);
// Find the bounding sphere of the split camera frustum.
Vector3F center;
float radius;
GetBoundingSphere(_splitVolume, out center, out radius);
// Extend radius to get enough border for filtering.
int shadowMapSize = shadow.ShadowMap.Height;
// We could extend by (ShadowMapSize + BorderTexels) / ShadowMapSize;
// Add at least 1 texel. (This way, shadow mask shader can clamp uv to
// texture rect in without considering half texel border to avoid sampling outside..)
radius *= (float)(shadowMapSize + 1) / shadowMapSize;
// Convert center to light space.
Pose lightPose = lightNode.PoseWorld;
center = cameraPose.ToWorldPosition(center);
center = lightPose.ToLocalPosition(center);
// Snap center to texel positions to avoid shadow swimming.
SnapPositionToTexels(ref center, 2 * radius, shadowMapSize);
// Convert center back to world space.
center = lightPose.ToWorldPosition(center);
Matrix33F orientation = lightPose.Orientation;
Vector3F backward = orientation.GetColumn(2);
var orthographicProjection = (OrthographicProjection)_orthographicCameraNode.Camera.Projection;
// Create a tight orthographic frustum around the cascade's bounding sphere.
orthographicProjection.SetOffCenter(-radius, radius, -radius, radius, 0, 2 * radius);
Vector3F cameraPosition = center + radius * backward;
Pose frustumPose = new Pose(cameraPosition, orientation);
Pose view = frustumPose.Inverse;
shadow.ViewProjections[split] = (Matrix)view * orthographicProjection;
// Convert depth bias from "texel" to light space [0, 1] depth.
// Minus sign to move receiver depth closer to light. Divide by depth to normalize.
float unitsPerTexel = orthographicProjection.Width / shadow.ShadowMap.Height;
shadow.EffectiveDepthBias[split] = -shadow.DepthBias[split] * unitsPerTexel / orthographicProjection.Depth;
// Convert normal offset from "texel" to world space.
shadow.EffectiveNormalOffset[split] = shadow.NormalOffset[split] * unitsPerTexel;
// For rendering the shadow map, move near plane back by MinLightDistance
// to catch occluders in front of the cascade.
orthographicProjection.Near = -shadow.MinLightDistance;
_orthographicCameraNode.PoseWorld = frustumPose;
// Set a viewport to render a tile in the texture atlas.
graphicsDevice.Viewport = GetViewport(shadow, split);
context.Viewport = graphicsDevice.Viewport;
shadowMapContainsSomething |= RenderCallback(context);
}
// Recycle shadow map if empty.
if (!shadowMapContainsSomething)
{
graphicsService.RenderTargetPool.Recycle(shadow.ShadowMap);
shadow.ShadowMap = null;
}
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.CameraNode = cameraNode;
context.ShadowNear = float.NaN;
context.Technique = null;
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.ReferenceNode = originalReferenceNode;
context.Object = null;
context.Data[RenderContextKeys.ShadowTileIndex] = null;
}
private void VisualizeQuery(SceneNode node, RenderContext context, int passIndex)
{
if (node == null)
throw new ArgumentNullException("node");
if (context == null)
throw new ArgumentNullException("context");
context.ThrowIfCameraMissing();
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var originalRenderState = new RenderStateSnapshot(graphicsDevice);
var viewport = graphicsDevice.Viewport;
_parameterTargetSize.SetValue(new Vector2(viewport.Width, viewport.Height));
var aabb = node.Aabb;
_parameterDebugMinimum.SetValue((Vector3)aabb.Minimum);
_parameterDebugMaximum.SetValue((Vector3)aabb.Maximum);
_effect.CurrentTechnique = _techniqueVisualize;
_techniqueVisualize.Passes[passIndex].Apply();
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
// Do not override blend state: Use current blend state.
graphicsDevice.DrawFullScreenQuad();
originalRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
if (context.Scene == null)
throw new ArgumentException("Scene needs to be set in render context.", "context");
if (context.CameraNode == null)
throw new ArgumentException("Camera needs to be set in render context.", "context");
if (!(context.CameraNode.Camera.Projection is PerspectiveProjection))
throw new ArgumentException("The camera in the render context must use a perspective projection.", "context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
var graphicsDevice = context.GraphicsService.GraphicsDevice;
int frame = context.Frame;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalCameraNode = context.CameraNode;
var originalLodCameraNode = context.LodCameraNode;
float originalLodBias = context.LodBias;
var originalReferenceNode = context.ReferenceNode;
Pose originalCameraPose = originalCameraNode.PoseWorld;
Vector3F originalCameraPosition = originalCameraPose.Position;
Matrix33F originalCameraOrientation = originalCameraPose.Orientation;
Vector3F right = originalCameraOrientation.GetColumn(0);
Vector3F up = originalCameraOrientation.GetColumn(1);
Vector3F back = originalCameraOrientation.GetColumn(2);
try
{
// Use foreach instead of for-loop to catch InvalidOperationExceptions in
// case the collection is modified.
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as PlanarReflectionNode;
if (node == null)
continue;
// Update each node only once per frame.
if (node.LastFrame == frame)
continue;
node.LastFrame = frame;
var texture = node.RenderToTexture.Texture;
if (texture == null)
continue;
var renderTarget = texture as RenderTarget2D;
if (renderTarget == null)
throw new GraphicsException(
"PlanarReflectionNode.RenderToTexture.Texture is invalid. The texture must be a RenderTarget2D.");
// RenderToTexture instances can be shared. --> Update them only once per frame.
if (node.RenderToTexture.LastFrame == frame)
continue;
// Do not render if we look at the back of the reflection plane.
Vector3F planeNormal = node.NormalWorld;
Vector3F planePosition = node.PoseWorld.Position;
Vector3F planeToCamera = originalCameraPosition - planePosition;
if (Vector3F.Dot(planeNormal, planeToCamera) < 0)
continue;
var cameraNode = node.CameraNode;
// Reflect camera pose.
Pose cameraPose;
cameraPose.Position = planePosition + Reflect(planeToCamera, planeNormal);
cameraPose.Orientation = new Matrix33F();
cameraPose.Orientation.SetColumn(0, Reflect(right, planeNormal));
cameraPose.Orientation.SetColumn(1, -Reflect(up, planeNormal));
cameraPose.Orientation.SetColumn(2, Reflect(back, planeNormal));
cameraNode.PoseWorld = cameraPose;
// The projection of the player camera.
var originalProjection = originalCameraNode.Camera.Projection;
// The projection of the reflected camera.
var projection = (PerspectiveProjection)cameraNode.Camera.Projection;
// Choose optimal projection. We get the screen-space bounds of the reflection node.
// Then we make the FOV so small that it exactly contains the node.
projection.Set(originalProjection);
var bounds = GraphicsHelper.GetBounds(cameraNode, node);
// Abort if the bounds are empty.
if (Numeric.AreEqual(bounds.X, bounds.Z) || Numeric.AreEqual(bounds.Y, bounds.W))
continue;
// Apply FOV scale to bounds.
float fovScale = node.FieldOfViewScale;
float deltaX = (bounds.Z - bounds.X) * (fovScale - 1) / 2;
bounds.X -= deltaX;
bounds.Z += deltaX;
float deltaY = (bounds.W - bounds.Y) * (fovScale - 1) / 2;
bounds.Y -= deltaY;
bounds.W += deltaY;
// Update projection to contain only the node bounds.
projection.Left = projection.Left + bounds.X * projection.Width;
projection.Right = projection.Left + bounds.Z * projection.Width;
projection.Top = projection.Top - bounds.Y * projection.Height;
projection.Bottom = projection.Top - bounds.W * projection.Height;
// Set far clip plane.
if (node.Far.HasValue)
projection.Far = node.Far.Value;
// Set near clip plane.
Vector3F planeNormalCamera = cameraPose.ToLocalDirection(-node.NormalWorld);
Vector3F planePointCamera = cameraPose.ToLocalPosition(node.PoseWorld.Position);
projection.NearClipPlane = new Plane(planeNormalCamera, planePointCamera);
context.CameraNode = cameraNode;
context.LodCameraNode = cameraNode;
context.LodBias = node.LodBias ?? originalLodBias;
context.ReferenceNode = node;
context.RenderTarget = renderTarget;
context.Viewport = new Viewport(0, 0, renderTarget.Width, renderTarget.Height);
RenderCallback(context);
// Update other properties of RenderToTexture.
node.RenderToTexture.LastFrame = frame;
node.RenderToTexture.TextureMatrix = GraphicsHelper.ProjectorBiasMatrix
* cameraNode.Camera.Projection
* cameraNode.PoseWorld.Inverse;
}
}
catch (InvalidOperationException exception)
{
throw new GraphicsException(
"InvalidOperationException was raised in PlanarReflectionRenderer.Render(). "
+ "This can happen if a SceneQuery instance that is currently in use is modified in the "
+ "RenderCallback. --> Use different SceneQuery types in the method which calls "
+ "SceneCaptureRenderer.Render() and in the RenderCallback method.",
exception);
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.CameraNode = originalCameraNode;
context.LodCameraNode = originalLodCameraNode;
context.LodBias = originalLodBias;
context.ReferenceNode = originalReferenceNode;
}
public void Query(IList<SceneNode> nodes, RenderContext context)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
context.ThrowIfCameraMissing();
int numberOfNodes = nodes.Count; // Note: nodes may contain null entries!
if (numberOfNodes == 0)
{
Statistics.ObjectsTotal = 0;
Statistics.ObjectsCulled = 0;
Statistics.ShadowCastersTotal = 0;
Statistics.ShadowCastersCulled = 0;
return;
}
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var originalRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.BlendState = BlendState.Opaque;
// Note: The camera parameters are set in Render().
// ----- Query data.
// The vertices store the AABB and the pixel address to which the results is
// written. In MonoGame, we can simply submit the data as a point list. However,
// XNA does not support point lists. As a workaround we can submit the data as a
// line strip:
// - The line strip needs to be continuous: Line strips go left-to-right at even
// lines and right-to-left at odd lines.
// - According to DirectX 9 line rasterization rules, the last pixel of a line
// is excluded. An additional vertex needs to be appended to ensure that the
// last pixel is rendered.
if (_queryData == null || _queryData.Length < numberOfNodes + 1)
{
// We need at least numberOfNodes + 1 vertices. We use NextPowerOf2() which
// returns a value > numberOfNodes.
_queryData = new OcclusionVertex[MathHelper.NextPowerOf2((uint)numberOfNodes)];
}
Debug.Assert(_shadowCasters.Count == 0, "List of shadow casters has not been cleared.");
int index = 0;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i];
if (node == null)
continue;
// Ignore empty shapes.
if (node.Shape is EmptyShape)
{
nodes[i] = null; // Cull scene node!
continue;
}
if (node.CastsShadows)
_shadowCasters.Add(node);
// Pixel address
_queryData[index].Pixel = ToPixelAddress(index);
// AABB
var aabb = node.Aabb;
_queryData[index].Minimum = aabb.Minimum;
_queryData[index].Maximum = aabb.Maximum;
// Position, Scale and MaxDistance are used for distance culling.
_queryData[index].Position = node.PoseWorld.Position;
_queryData[index].Scale = node.ScaleWorld;
_queryData[index].MaxDistance = node.MaxDistance;
index++;
}
// Append additional vertex. (For XNA line strips.)
{
// Copy last vertex and increment pixel address.
_queryData[index] = _queryData[index - 1];
_queryData[index].Pixel = ToPixelAddress(index);
}
int actualNumberOfNodes = index;
// Allocate render target storing the results.
int numberOfQueries = _lightHzbAvailable ? actualNumberOfNodes + _shadowCasters.Count : actualNumberOfNodes;
int desiredBufferHeight = (numberOfQueries - 1) / ResultsBufferWidth + 1;
Debug.Assert(ResultsBufferWidth * desiredBufferHeight >= actualNumberOfNodes, "Sanity check.");
if (_resultsBuffer == null || _resultsBuffer.Height < desiredBufferHeight)
{
if (_resultsBuffer != null)
_resultsBuffer.Dispose();
_resultsBuffer = new RenderTarget2D(graphicsDevice, ResultsBufferWidth, desiredBufferHeight, false, SurfaceFormat.Single, DepthFormat.None);
_results = new float[ResultsBufferWidth * desiredBufferHeight];
}
// Set new render target before binding the _cameraHzb.
graphicsDevice.SetRenderTarget(_resultsBuffer);
float width = _hzbLevels[0].Width;
float height = _hzbLevels[0].Height;
Vector2 sourceSize = new Vector2(width, height);
Vector2 targetSize = new Vector2(_resultsBuffer.Width, _resultsBuffer.Height);
Vector2 texelSize = new Vector2(1.0f / _cameraHzb.Width, 1.0f / _cameraHzb.Height);
Vector2 halfTexelSize = 0.5f * texelSize;
_parameterClampAabbMinimum.SetValue((Vector3)_cameraAabb.Minimum);
_parameterClampAabbMaximum.SetValue((Vector3)_cameraAabb.Maximum);
_parameterHzbSize.SetValue(sourceSize);
_parameterTargetSize.SetValue(targetSize);
_parameterAtlasSize.SetValue(new Vector2(_cameraHzb.Width, _cameraHzb.Height));
_parameterTexelOffset.SetValue(texelSize);
_parameterHalfTexelOffset.SetValue(halfTexelSize);
_parameterMaxLevel.SetValue((float)_hzbLevels.Length - 1);
_parameterHzbTexture.SetValue(_cameraHzb);
_parameterLightHzbTexture.SetValue(_lightHzb);
_effect.CurrentTechnique = _techniqueQuery;
_techniqueQuery.Passes[0].Apply();
#if MONOGAME
var primitiveType = PrimitiveType.PointList;
#else
var primitiveType = PrimitiveType.LineStrip;
#endif
graphicsDevice.DrawUserPrimitives(primitiveType, _queryData, 0, actualNumberOfNodes);
// Query shadow casters.
int numberOfShadowCasters = _shadowCasters.Count;
if (_lightHzbAvailable)
{
int offset = actualNumberOfNodes;
for (int i = 0; i < numberOfShadowCasters; i++)
{
var node = _shadowCasters[i];
// Pixel address
_queryData[i].Pixel = ToPixelAddress(offset + i);
// AABB
var aabb = node.Aabb;
_queryData[i].Minimum = aabb.Minimum;
_queryData[i].Maximum = aabb.Maximum;
// Position, Scale and MaxDistance are used for distance culling.
_queryData[i].Position = node.PoseWorld.Position;
_queryData[i].Scale = node.ScaleWorld;
_queryData[i].MaxDistance = node.MaxDistance;
}
// Append additional vertex. (For XNA line strips.)
{
// Copy last vertex and increment pixel address.
_queryData[numberOfShadowCasters] = _queryData[numberOfShadowCasters - 1];
_queryData[numberOfShadowCasters].Pixel = ToPixelAddress(offset + numberOfShadowCasters);
}
_parameterClampAabbMinimum.SetValue((Vector3)_lightAabb.Minimum);
_parameterClampAabbMaximum.SetValue((Vector3)_lightAabb.Maximum);
int passIndex = ProgressiveShadowCasterCulling ? 2 : 1;
_techniqueQuery.Passes[passIndex].Apply();
graphicsDevice.DrawUserPrimitives(primitiveType, _queryData, 0, numberOfShadowCasters);
}
// Read back results.
graphicsDevice.SetRenderTarget(null);
_resultsBuffer.GetData(_results);
index = 0;
int objectsCulled = 0;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i];
if (node == null)
continue;
int resultIndex = ToResultsBufferIndex(index);
float viewNormalizedDistance = _results[resultIndex];
if (viewNormalizedDistance >= 0)
{
// Store view-normalized distance in SortTag.
node.SortTag = viewNormalizedDistance;
}
else
{
// Scene node culled.
nodes[i] = null;
objectsCulled++;
}
index++;
}
int shadowCastersCulled = 0;
if (_lightHzbAvailable)
{
int offset = actualNumberOfNodes;
for (int i = 0; i < numberOfShadowCasters; i++)
{
var node = _shadowCasters[i];
int resultIndex = ToResultsBufferIndex(offset + i);
// ReSharper disable once CompareOfFloatsByEqualityOperator
float viewNormalizedDistance = _results[resultIndex];
if (_results[resultIndex] >= 0)
{
// Shadow caster is visible.
node.ClearFlag(SceneNodeFlags.IsShadowCasterCulled);
node.SortTag = viewNormalizedDistance;
}
else
{
// Shadow caster is culled.
node.SetFlag(SceneNodeFlags.IsShadowCasterCulled);
shadowCastersCulled++;
}
}
}
Statistics.ObjectsTotal = actualNumberOfNodes;
Statistics.ObjectsCulled = objectsCulled;
Statistics.ShadowCastersTotal = _shadowCasters.Count;
Statistics.ShadowCastersCulled = shadowCastersCulled;
_shadowCasters.Clear();
originalRenderState.Restore();
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
// Note: The camera node is not used by the StandardShadowMapRenderer.
// Still throw an exception if null for consistency. (All other shadow map
// renderers need a camera node.)
context.ThrowIfCameraMissing();
context.ThrowIfSceneMissing();
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalReferenceNode = context.ReferenceNode;
var cameraNode = context.CameraNode;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
context.Technique = "Default";
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
{
continue;
}
var shadow = lightNode.Shadow as StandardShadow;
if (shadow == null)
{
continue;
}
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
// Get a new shadow map if necessary.
if (shadow.ShadowMap == null)
{
shadow.ShadowMap = graphicsService.RenderTargetPool.Obtain2D(
new RenderTargetFormat(
shadow.PreferredSize,
shadow.PreferredSize,
false,
shadow.Prefer16Bit ? SurfaceFormat.HalfSingle : SurfaceFormat.Single,
DepthFormat.Depth24));
}
// Create a suitable shadow camera.
CameraNode lightCameraNode;
if (lightNode.Light is ProjectorLight)
{
var light = (ProjectorLight)lightNode.Light;
if (light.Projection is PerspectiveProjection)
{
var lp = (PerspectiveProjection)light.Projection;
var cp = (PerspectiveProjection)_perspectiveCameraNode.Camera.Projection;
cp.SetOffCenter(lp.Left, lp.Right, lp.Bottom, lp.Top, lp.Near, lp.Far);
lightCameraNode = _perspectiveCameraNode;
}
else //if (light.Projection is OrthographicProjection)
{
var lp = (OrthographicProjection)light.Projection;
var cp = (OrthographicProjection)_orthographicCameraNode.Camera.Projection;
cp.SetOffCenter(lp.Left, lp.Right, lp.Bottom, lp.Top, lp.Near, lp.Far);
lightCameraNode = _orthographicCameraNode;
}
}
else if (lightNode.Light is Spotlight)
{
var light = (Spotlight)lightNode.Light;
var cp = (PerspectiveProjection)_perspectiveCameraNode.Camera.Projection;
cp.SetFieldOfView(2 * light.CutoffAngle, 1, shadow.DefaultNear, light.Range);
lightCameraNode = _perspectiveCameraNode;
}
else
{
throw new GraphicsException("StandardShadow can only be used with a Spotlight or a ProjectorLight.");
}
lightCameraNode.PoseWorld = lightNode.PoseWorld;
// Store data for use in StandardShadowMaskRenderer.
shadow.Near = lightCameraNode.Camera.Projection.Near;
shadow.Far = lightCameraNode.Camera.Projection.Far;
shadow.View = lightCameraNode.PoseWorld.Inverse;
shadow.Projection = lightCameraNode.Camera.Projection;
// World units per texel at a planar distance of 1 world unit.
float unitsPerTexel = lightCameraNode.Camera.Projection.Width / (shadow.ShadowMap.Height * shadow.Near);
// Convert depth bias from "texel" to world space.
// Minus to move receiver depth closer to light.
shadow.EffectiveDepthBias = -shadow.DepthBias * unitsPerTexel;
// Convert normal offset from "texel" to world space.
shadow.EffectiveNormalOffset = shadow.NormalOffset * unitsPerTexel;
graphicsDevice.SetRenderTarget(shadow.ShadowMap);
context.RenderTarget = shadow.ShadowMap;
context.Viewport = graphicsDevice.Viewport;
graphicsDevice.Clear(Color.White);
// The scene node renderer should use the light camera instead of the player camera.
context.CameraNode = lightCameraNode;
context.ReferenceNode = lightNode;
context.Object = shadow;
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
bool shadowMapContainsSomething = RenderCallback(context);
if (!shadowMapContainsSomething)
{
// Shadow map is empty. Recycle it.
graphicsService.RenderTargetPool.Recycle(shadow.ShadowMap);
shadow.ShadowMap = null;
}
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.CameraNode = cameraNode;
context.Technique = null;
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.ReferenceNode = originalReferenceNode;
context.Object = null;
}
public void Render(IList<SceneNode> occluders, LightNode lightNode, SceneNodeRenderer renderer, RenderContext context)
{
if (context == null)
throw new ArgumentNullException("context");
context.ThrowIfCameraMissing();
// ----- Sort occluders by type: IOcclusionProxy vs. SceneNode
SortOccluders(occluders, renderer, context);
Statistics.Occluders = _occlusionProxies.Count + _sceneNodes.Count;
// ----- Update all IOcclusionProxy in background.
if (_occlusionProxies.Count > 0)
{
if (EnableMultithreading)
_updateTask = Parallel.Start(_updateOcclusionProxies);
else
UpdateOcclusionProxies();
}
// ----- Backup render state.
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var originalRenderState = new RenderStateSnapshot(graphicsDevice);
// ----- Camera properties
var cameraNode = context.CameraNode;
Matrix cameraView = (Matrix)cameraNode.View;
var cameraProjection = cameraNode.Camera.Projection;
Matrix cameraViewProjection = cameraView * cameraProjection;
if (lightNode == null)
{
_lightHzbAvailable = false;
}
else
{
// ----- Render light HZB.
_lightHzbAvailable = true;
var shadow = lightNode.Shadow as CascadedShadow;
if (shadow == null)
throw new ArgumentException("LightNode expected to have a CascadedShadow.", "lightNode");
// Set up orthographic camera similar to CascadedShadowMapRenderer.
context.CameraNode = _orthographicCameraNode;
// Part of camera frustum covered by shadow map.
var maxShadowDistance = shadow.Distances[shadow.NumberOfCascades - 1];
_splitVolume.SetFieldOfView(cameraProjection.FieldOfViewY, cameraProjection.AspectRatio, cameraProjection.Near, Math.Min(cameraProjection.Far, maxShadowDistance));
// Find the bounding sphere of the camera frustum.
Vector3F center;
float radius;
GetBoundingSphere(_splitVolume, out center, out radius);
Matrix33F orientation = lightNode.PoseWorld.Orientation;
Vector3F lightBackward = orientation.GetColumn(2);
var orthographicProjection = (OrthographicProjection)_orthographicCameraNode.Camera.Projection;
// Create a tight orthographic frustum around the cascade's bounding sphere.
orthographicProjection.SetOffCenter(-radius, radius, -radius, radius, 0, 2 * radius);
center = cameraNode.PoseWorld.ToWorldPosition(center);
Vector3F cameraPosition = center + radius * lightBackward;
Pose frustumPose = new Pose(cameraPosition, orientation);
// For rendering the shadow map, move near plane back by MinLightDistance
// to catch occluders in front of the cascade.
orthographicProjection.Near = -shadow.MinLightDistance;
_orthographicCameraNode.PoseWorld = frustumPose;
Pose lightView = frustumPose.Inverse;
Matrix lightViewProjection = (Matrix)lightView * orthographicProjection;
_parameterCameraViewProj.SetValue(lightViewProjection);
_parameterCameraNear.SetValue(orthographicProjection.Near);
_parameterCameraFar.SetValue(orthographicProjection.Far);
RenderOccluders(renderer, context);
CreateDepthHierarchy(_lightHzb, context);
// Set effect parameters for use in Query().
_lightAabb = _orthographicCameraNode.Aabb;
_parameterLightViewProj.SetValue(lightViewProjection);
_parameterLightToCamera.SetValue(Matrix.Invert(lightViewProjection) * cameraViewProjection);
context.CameraNode = cameraNode;
}
// ----- Render camera HZB.
// Set camera parameters. (These effect parameters are also needed in Query()!)
_cameraAabb = cameraNode.Aabb;
_parameterCameraViewProj.SetValue(cameraViewProjection);
_parameterCameraNear.SetValue(cameraProjection.Near);
_parameterCameraFar.SetValue(cameraProjection.Far);
var lodCameraNode = context.LodCameraNode;
if (lodCameraNode != null)
{
// Enable distance culling.
_parameterCameraPosition.SetValue((Vector3)lodCameraNode.PoseWorld.Position);
float yScale = Math.Abs(lodCameraNode.Camera.Projection.ToMatrix44F().M11);
_parameterNormalizationFactor.SetValue(1.0f / yScale * cameraNode.LodBias * context.LodBias);
}
else
{
// Disable distance culling.
_parameterCameraPosition.SetValue(new Vector3());
_parameterNormalizationFactor.SetValue(0);
}
RenderOccluders(renderer, context);
CreateDepthHierarchy(_cameraHzb, context);
_sceneNodes.Clear();
_occlusionProxies.Clear();
// Restore render state.
graphicsDevice.SetRenderTarget(null);
originalRenderState.Restore();
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
}
private void ProcessJobs(RenderContext context)
{
// Set render states.
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullNone;
bool renderFill = (Options & FigureRenderOptions.RenderFill) != 0;
if (renderFill)
SetupFill(context);
bool renderStroke = (Options & FigureRenderOptions.RenderStroke) != 0;
if (renderStroke)
SetupStroke(context);
var jobs = _jobs.Array;
int jobCount = _jobs.Count;
_mode = RenderMode.Undefined;
for (int i = 0; i < jobCount; i++)
{
var node = jobs[i].Node;
var renderData = node.Figure.RenderData;
if (renderData == null)
continue;
var vertices = renderData.Vertices;
if (vertices == null || vertices.Count == 0)
continue;
// We can cache a static vertex buffer for static figures with camera-independent dash patterns.
if (node.IsStatic && node.DashInWorldSpace)
{
var nodeRenderData = node.RenderData as FigureNodeRenderData;
if (nodeRenderData == null)
{
nodeRenderData = new FigureNodeRenderData();
node.RenderData = nodeRenderData;
}
if (!nodeRenderData.IsValid)
CacheVertexBuffer(node, _graphicsService.GraphicsDevice);
}
// Render filled polygons.
var fillIndices = renderData.FillIndices;
if (renderFill
&& fillIndices != null
&& fillIndices.Count > 0
&& !Numeric.IsZero(node.FillAlpha))
{
Fill(node, vertices, fillIndices);
}
// Render stroked lines.
var strokeIndices = renderData.StrokeIndices;
if (renderStroke
&& strokeIndices != null
&& strokeIndices.Count > 0
&& !Numeric.IsZero(node.StrokeThickness)
&& !Numeric.IsZero(node.StrokeAlpha))
{
Stroke(node, vertices, strokeIndices);
}
}
Flush();
savedRenderState.Restore();
}
/// <summary>
/// Draws the points.
/// </summary>
/// <param name="context">The render context.</param>
/// <remarks>
/// If <see cref="Effect"/> is <see langword="null"/>, then <see cref="Render"/> does nothing.
/// </remarks>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is <see langword="null"/>.
/// </exception>
public void Render(RenderContext context)
{
if (context == null)
throw new ArgumentNullException("context");
if (Effect == null)
return;
int numberOfPoints = _points.Count;
if (numberOfPoints <= 0)
return;
context.Validate(Effect);
context.ThrowIfCameraMissing();
// Render state.
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullNone;
// Reset the texture stages. If a floating point texture is set, we get exceptions
// when a sampler with bilinear filtering is set.
graphicsDevice.ResetTextures();
// Effect parameters.
Effect.Alpha = 1;
Effect.DiffuseColor = new Vector3(1, 1, 1);
Effect.LightingEnabled = false;
Effect.TextureEnabled = false;
Effect.VertexColorEnabled = true;
Effect.World = Matrix.Identity;
Effect.View = Matrix.Identity;
Effect.Projection = Matrix.Identity;
Effect.CurrentTechnique.Passes[0].Apply();
// Get WorldViewProjection matrix.
Matrix view = (Matrix)context.CameraNode.View;
Matrix projection = context.CameraNode.Camera.Projection;
Matrix wvp = Matrix.Multiply(view, projection);
// The x and y point size relative to the viewport.
Viewport viewport = graphicsDevice.Viewport;
float sizeX = PointSize / viewport.Width;
float sizeY = sizeX * viewport.Width / viewport.Height;
// Resize buffer if necessary.
ResizeBuffer(graphicsDevice, numberOfPoints);
// Submit points. The loop is only needed if we have more points than can
// be submitted with one draw call.
var startPointIndex = 0;
while (startPointIndex < numberOfPoints)
{
// Number of points in this batch.
int pointsPerBatch = Math.Min(numberOfPoints - startPointIndex, _buffer.Length / 6);
// Create vertices for points. All positions are directly in clip space!
for (int i = 0; i < pointsPerBatch; i++)
{
var point = _points[startPointIndex + i];
// Transform point position to clip space.
Vector3 positionWorld = (Vector3)point.Position;
Vector3 positionClip;
Vector3.Transform(ref positionWorld, ref wvp, out positionClip);
float w = (float)((double)positionWorld.X * wvp.M14 + (double)positionWorld.Y * wvp.M24 + (double)positionWorld.Z * wvp.M34 + wvp.M44);
// Homogeneous divide.
positionClip /= w;
// 2 triangles create a point quad. Clip space goes from -1 to 1, therefore
// we do not need to divide sizeX and sizeY by 2.
Vector3 bottomLeft = positionClip + new Vector3(-sizeX, +sizeY, 0);
Vector3 bottomRight = positionClip + new Vector3(+sizeX, +sizeY, 0);
Vector3 topLeft = positionClip + new Vector3(-sizeX, -sizeY, 0);
Vector3 topRight = positionClip + new Vector3(+sizeX, -sizeY, 0);
_buffer[i * 6 + 0].Position = bottomLeft;
_buffer[i * 6 + 0].Color = point.Color;
_buffer[i * 6 + 1].Position = bottomRight;
_buffer[i * 6 + 1].Color = point.Color;
_buffer[i * 6 + 2].Position = topLeft;
_buffer[i * 6 + 2].Color = point.Color;
_buffer[i * 6 + 3].Position = bottomRight;
_buffer[i * 6 + 3].Color = point.Color;
_buffer[i * 6 + 4].Position = topRight;
_buffer[i * 6 + 4].Color = point.Color;
_buffer[i * 6 + 5].Position = topLeft;
_buffer[i * 6 + 5].Color = point.Color;
}
// Draw triangles.
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleList, _buffer, 0, pointsPerBatch * 2);
startPointIndex += pointsPerBatch;
}
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.BlendState = GraphicsHelper.BlendStateAdd;
var viewport = graphicsDevice.Viewport;
_parameterViewportSize.SetValue(new Vector2(viewport.Width, viewport.Height));
_parameterGBuffer0.SetValue(context.GBuffer0);
_parameterGBuffer1.SetValue(context.GBuffer1);
var cameraNode = context.CameraNode;
var cameraPose = cameraNode.PoseWorld;
Matrix viewProjection = (Matrix)cameraNode.View * cameraNode.Camera.Projection;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
var isHdrEnabled = context.IsHdrEnabled();
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
continue;
var light = lightNode.Light as ProjectorLight;
if (light == null)
continue;
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
float hdrScale = isHdrEnabled ? light.HdrScale : 1;
_parameterDiffuseColor.SetValue((Vector3)light.Color * light.DiffuseIntensity * hdrScale);
_parameterSpecularColor.SetValue((Vector3)light.Color * light.SpecularIntensity * hdrScale);
_parameterTexture.SetValue(light.Texture);
var lightPose = lightNode.PoseWorld;
_parameterPosition.SetValue((Vector3)(lightPose.Position - cameraPose.Position));
_parameterRange.SetValue(light.Projection.Far);
_parameterAttenuation.SetValue(light.Attenuation);
_parameterTextureMatrix.SetValue((Matrix)(GraphicsHelper.ProjectorBiasMatrix * light.Projection * (lightPose.Inverse * new Pose(cameraPose.Position))));
var rectangle = GraphicsHelper.GetViewportRectangle(cameraNode, viewport, lightNode);
var texCoordTopLeft = new Vector2F(rectangle.Left / (float)viewport.Width, rectangle.Top / (float)viewport.Height);
var texCoordBottomRight = new Vector2F(rectangle.Right / (float)viewport.Width, rectangle.Bottom / (float)viewport.Height);
GraphicsHelper.GetFrustumFarCorners(cameraNode.Camera.Projection, texCoordTopLeft, texCoordBottomRight, _frustumFarCorners);
// Convert frustum far corners from view space to world space.
for (int j = 0; j < _frustumFarCorners.Length; j++)
_frustumFarCorners[j] = (Vector3)cameraPose.ToWorldDirection((Vector3F)_frustumFarCorners[j]);
_parameterFrustumCorners.SetValue(_frustumFarCorners);
bool hasShadow = (lightNode.Shadow != null && lightNode.Shadow.ShadowMask != null);
if (hasShadow)
{
switch (lightNode.Shadow.ShadowMaskChannel)
{
case 0: _parameterShadowMaskChannel.SetValue(new Vector4(1, 0, 0, 0)); break;
case 1: _parameterShadowMaskChannel.SetValue(new Vector4(0, 1, 0, 0)); break;
case 2: _parameterShadowMaskChannel.SetValue(new Vector4(0, 0, 1, 0)); break;
default: _parameterShadowMaskChannel.SetValue(new Vector4(0, 0, 0, 1)); break;
}
_parameterShadowMask.SetValue(lightNode.Shadow.ShadowMask);
}
if (lightNode.Clip != null)
{
var data = lightNode.RenderData as LightRenderData;
if (data == null)
{
data = new LightRenderData();
lightNode.RenderData = data;
}
data.UpdateClipSubmesh(context.GraphicsService, lightNode);
graphicsDevice.DepthStencilState = GraphicsHelper.DepthStencilStateOnePassStencilFail;
graphicsDevice.BlendState = GraphicsHelper.BlendStateNoColorWrite;
_parameterWorldViewProjection.SetValue((Matrix)data.ClipMatrix * viewProjection);
_passClip.Apply();
data.ClipSubmesh.Draw();
graphicsDevice.DepthStencilState = lightNode.InvertClip
? GraphicsHelper.DepthStencilStateStencilEqual0
: GraphicsHelper.DepthStencilStateStencilNotEqual0;
graphicsDevice.BlendState = GraphicsHelper.BlendStateAdd;
}
else
{
graphicsDevice.DepthStencilState = DepthStencilState.None;
}
if (hasShadow)
{
if (light.Texture.Format == SurfaceFormat.Alpha8)
_passShadowedAlpha.Apply();
else
_passShadowedRgb.Apply();
}
else
{
if (light.Texture.Format == SurfaceFormat.Alpha8)
_passDefaultAlpha.Apply();
else
_passDefaultRgb.Apply();
}
graphicsDevice.DrawQuad(rectangle);
}
savedRenderState.Restore();
}
/// <inheritdoc/>
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
// Camera properties
var cameraNode = context.CameraNode;
Matrix view = (Matrix)new Matrix44F(cameraNode.PoseWorld.Orientation.Transposed, new Vector3F());
_parameterView.SetValue(view);
Matrix projection = cameraNode.Camera.Projection;
_parameterProjection.SetValue(projection);
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as ScatteringSkyNode;
if (node == null)
continue;
// ScatteringSkyNode is visible in current frame.
node.LastFrame = frame;
_parameterSunDirection.SetValue((Vector3)node.SunDirection);
_parameterSunIntensity.SetValue((Vector3)(node.SunIntensity * node.SunColor));
_parameterRadii.SetValue(new Vector4(
node.AtmosphereHeight + node.PlanetRadius, // Atmosphere radius
node.PlanetRadius, // Ground radius
node.ObserverAltitude + node.PlanetRadius, // Observer radius
node.ScaleHeight)); // Absolute Scale height
_parameterNumberOfSamples.SetValue(node.NumberOfSamples);
_parameterBetaRayleigh.SetValue((Vector3)node.BetaRayleigh);
_parameterBetaMie.SetValue((Vector3)node.BetaMie);
_parameterGMie.SetValue(node.GMie);
_parameterTransmittance.SetValue(node.Transmittance);
if (node.BaseHorizonColor.IsNumericallyZero && node.BaseZenithColor.IsNumericallyZero)
{
// No base color.
if (context.IsHdrEnabled())
_passLinear.Apply();
else
_passGamma.Apply();
}
else
{
// Add base color.
_parameterBaseHorizonColor.SetValue((Vector4)new Vector4F(node.BaseHorizonColor, node.BaseColorShift));
_parameterBaseZenithColor.SetValue((Vector3)node.BaseZenithColor);
if (context.IsHdrEnabled())
_passLinearWithBaseColor.Apply();
else
_passGammaWithBaseColor.Apply();
}
_submesh.Draw();
}
savedRenderState.Restore();
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
{
return;
}
context.Validate(_effect);
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.None;
int frame = context.Frame;
float deltaTime = (float)context.DeltaTime.TotalSeconds;
for (int nodeIndex = 0; nodeIndex < numberOfNodes; nodeIndex++)
{
var cloudNode = nodes[nodeIndex] as CloudLayerNode;
if (cloudNode == null)
{
continue;
}
var cloudMap = cloudNode.CloudMap as LayeredCloudMap;
if (cloudMap == null)
{
continue;
}
// We update the cloud map only once per frame.
if (cloudMap.LastFrame == frame)
{
continue;
}
cloudMap.LastFrame = frame;
var layers = cloudMap.Layers;
var animationTimes = cloudMap.AnimationTimes;
var sources = cloudMap.SourceLayers;
var targets = cloudMap.TargetLayers;
var renderTargets = cloudMap.LayerTextures;
// Animate the cloud map layers.
for (int i = 0; i < LayeredCloudMap.NumberOfTextures; i++)
{
if (layers[i] == null || layers[i].Texture != null)
{
continue;
}
if (cloudMap.Random == null)
{
cloudMap.Random = new Random(cloudMap.Seed);
}
// Make sure there is a user-defined texture or data for procedural textures.
if (sources[i] == null)
{
// Each octave is 128 x 128 (= 1 / 4 of the 512 * 512 noise texture).
sources[i] = new PackedTexture(null, _noiseTexture, cloudMap.Random.NextVector2F(0, 1), new Vector2F(0.25f));
targets[i] = new PackedTexture(null, _noiseTexture, cloudMap.Random.NextVector2F(0, 1), new Vector2F(0.25f));
renderTargets[i] = new RenderTarget2D(graphicsDevice, 128, 128, false, SurfaceFormat.Alpha8, DepthFormat.None);
}
// Update animation time.
animationTimes[i] += deltaTime * layers[i].AnimationSpeed;
// Update source and target if animation time is beyond 1.
if (animationTimes[i] > 1)
{
// Wrap animation time.
animationTimes[i] = animationTimes[i] % 1;
// Swap source and target.
MathHelper.Swap(ref sources[i], ref targets[i]);
// Set target to a new random part of the noise texture.
targets[i].Offset = cloudMap.Random.NextVector2F(0, 1);
}
// Lerp source and target together to get the final noise texture.
graphicsDevice.SetRenderTarget(renderTargets[i]);
_parameterViewportSize.SetValue(new Vector2(graphicsDevice.Viewport.Width, graphicsDevice.Viewport.Height));
_parameterTextures[0].SetValue(sources[i].TextureAtlas);
_parameterTextures[1].SetValue(targets[i].TextureAtlas);
_parameterTexture0Parameters.SetValue(new Vector4(sources[i].Scale.X, sources[i].Scale.Y, sources[i].Offset.X, sources[i].Offset.Y));
_parameterTexture1Parameters.SetValue(new Vector4(targets[i].Scale.X, targets[i].Scale.Y, targets[i].Offset.X, targets[i].Offset.Y));
_parameterLerp.SetValue(animationTimes[i]);
_passLerp.Apply();
graphicsDevice.DrawFullScreenQuad();
}
// Initialize the cloud map.
if (cloudMap.Texture == null || cloudMap.Size != cloudMap.Texture.Width)
{
cloudMap.Texture.SafeDispose();
var cloudTexture = new RenderTarget2D(
graphicsDevice,
cloudMap.Size,
cloudMap.Size,
false,
SurfaceFormat.Alpha8,
DepthFormat.None);
cloudMap.SetTexture(cloudTexture);
}
// Combine the layers.
graphicsDevice.SetRenderTarget((RenderTarget2D)cloudMap.Texture);
_parameterViewportSize.SetValue(new Vector2(cloudMap.Texture.Width, cloudMap.Texture.Height));
for (int i = 0; i < LayeredCloudMap.NumberOfTextures; i++)
{
var layer = layers[i] ?? EmptyLayer;
_parameterTextures[i].SetValue(layer.Texture ?? renderTargets[i]);
_parameterMatrices[i].SetValue((Matrix) new Matrix44F(layer.TextureMatrix, Vector3F.Zero));
_parameterDensities[i].SetValue(new Vector2(layer.DensityScale, layer.DensityOffset));
}
_parameterCoverage.SetValue(cloudMap.Coverage);
_parameterDensity.SetValue(cloudMap.Density);
_passDensity.Apply();
graphicsDevice.DrawFullScreenQuad();
}
savedRenderState.Restore();
graphicsDevice.SetRenderTarget(null);
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
// Note: The camera node is not used by the StandardShadowMapRenderer.
// Still throw an exception if null for consistency. (All other shadow map
// renderers need a camera node.)
context.ThrowIfCameraMissing();
context.ThrowIfSceneMissing();
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalReferenceNode = context.ReferenceNode;
var cameraNode = context.CameraNode;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
context.Technique = "Default";
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
continue;
var shadow = lightNode.Shadow as StandardShadow;
if (shadow == null)
continue;
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
// Get a new shadow map if necessary.
if (shadow.ShadowMap == null)
{
shadow.ShadowMap = graphicsService.RenderTargetPool.Obtain2D(
new RenderTargetFormat(
shadow.PreferredSize,
shadow.PreferredSize,
false,
shadow.Prefer16Bit ? SurfaceFormat.HalfSingle : SurfaceFormat.Single,
DepthFormat.Depth24));
}
// Create a suitable shadow camera.
CameraNode lightCameraNode;
if (lightNode.Light is ProjectorLight)
{
var light = (ProjectorLight)lightNode.Light;
if (light.Projection is PerspectiveProjection)
{
var lp = (PerspectiveProjection)light.Projection;
var cp = (PerspectiveProjection)_perspectiveCameraNode.Camera.Projection;
cp.SetOffCenter(lp.Left, lp.Right, lp.Bottom, lp.Top, lp.Near, lp.Far);
lightCameraNode = _perspectiveCameraNode;
}
else //if (light.Projection is OrthographicProjection)
{
var lp = (OrthographicProjection)light.Projection;
var cp = (OrthographicProjection)_orthographicCameraNode.Camera.Projection;
cp.SetOffCenter(lp.Left, lp.Right, lp.Bottom, lp.Top, lp.Near, lp.Far);
lightCameraNode = _orthographicCameraNode;
}
}
else if (lightNode.Light is Spotlight)
{
var light = (Spotlight)lightNode.Light;
var cp = (PerspectiveProjection)_perspectiveCameraNode.Camera.Projection;
cp.SetFieldOfView(2 * light.CutoffAngle, 1, shadow.DefaultNear, light.Range);
lightCameraNode = _perspectiveCameraNode;
}
else
{
throw new GraphicsException("StandardShadow can only be used with a Spotlight or a ProjectorLight.");
}
lightCameraNode.PoseWorld = lightNode.PoseWorld;
// Store data for use in StandardShadowMaskRenderer.
shadow.Near = lightCameraNode.Camera.Projection.Near;
shadow.Far = lightCameraNode.Camera.Projection.Far;
shadow.View = lightCameraNode.PoseWorld.Inverse;
shadow.Projection = lightCameraNode.Camera.Projection;
// World units per texel at a planar distance of 1 world unit.
float unitsPerTexel = lightCameraNode.Camera.Projection.Width / (shadow.ShadowMap.Height * shadow.Near);
// Convert depth bias from "texel" to world space.
// Minus to move receiver depth closer to light.
shadow.EffectiveDepthBias = -shadow.DepthBias * unitsPerTexel;
// Convert normal offset from "texel" to world space.
shadow.EffectiveNormalOffset = shadow.NormalOffset * unitsPerTexel;
graphicsDevice.SetRenderTarget(shadow.ShadowMap);
context.RenderTarget = shadow.ShadowMap;
context.Viewport = graphicsDevice.Viewport;
graphicsDevice.Clear(Color.White);
// The scene node renderer should use the light camera instead of the player camera.
context.CameraNode = lightCameraNode;
context.ReferenceNode = lightNode;
context.Object = shadow;
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
bool shadowMapContainsSomething = RenderCallback(context);
if (!shadowMapContainsSomething)
{
// Shadow map is empty. Recycle it.
graphicsService.RenderTargetPool.Recycle(shadow.ShadowMap);
shadow.ShadowMap = null;
}
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.CameraNode = cameraNode;
context.Technique = null;
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.ReferenceNode = originalReferenceNode;
context.Object = null;
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
// Camera properties
int viewportHeight = graphicsDevice.Viewport.Height;
var cameraNode = context.CameraNode;
var projection = cameraNode.Camera.Projection;
_parameterProjection.SetValue(projection);
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as CloudLayerNode;
if (node == null)
continue;
// CloudLayerNode is visible in current frame.
node.LastFrame = frame;
if (node.CloudMap.Texture == null)
continue;
var sunDirection = node.SunDirection;
_parameterSunDirection.SetValue((Vector3)sunDirection);
_parameterSkyCurvature.SetValue(node.SkyCurvature);
_parameterTextureMatrix.SetValue((Matrix)new Matrix44F(node.TextureMatrix, Vector3F.Zero));
// The sample at the pixel counts as one, the rest are for the blur.
// Note: We must not set -1 because a for loop like
// for (int i = 0; i < -1, i++)
// crashes the AMD DX9 WP8.1 graphics driver. LOL
_parameterNumberOfSamples.SetValue(Math.Max(0, node.NumberOfSamples - 1));
_parameterSampleDistance.SetValue(node.SampleDistance);
_parameterScatterParameters.SetValue(new Vector3(node.ForwardScatterExponent, node.ForwardScatterScale, node.ForwardScatterOffset));
_parameterHorizonFade.SetValue(new Vector2(node.HorizonFade, node.HorizonBias));
_parameterSunLight.SetValue((Vector3)node.SunLight);
_parameterAmbientLight.SetValue(new Vector4((Vector3)node.AmbientLight, node.Alpha));
_parameterTexture.SetValue(node.CloudMap.Texture);
// Occlusion query.
if (graphicsDevice.GraphicsProfile != GraphicsProfile.Reach && node.SunQuerySize >= Numeric.EpsilonF)
{
bool skipQuery = false;
if (node.OcclusionQuery != null)
{
if (node.OcclusionQuery.IsComplete)
{
node.TryUpdateSunOcclusion();
}
else
{
// The previous query is still not finished. Do not start a new query, this would
// create a SharpDX warning.
skipQuery = true;
}
}
else
{
node.OcclusionQuery = new OcclusionQuery(graphicsDevice);
}
if (!skipQuery)
{
node.IsQueryPending = true;
float totalPixels = viewportHeight * node.SunQuerySize;
totalPixels *= totalPixels;
node.QuerySize = totalPixels;
// Use a camera which looks at the sun.
// Get an relative up vector which is not parallel to the forward direction.
var lookAtUp = Vector3F.UnitY;
if (Vector3F.AreNumericallyEqual(sunDirection, lookAtUp))
lookAtUp = Vector3F.UnitZ;
Vector3F zAxis = -sunDirection;
Vector3F xAxis = Vector3F.Cross(lookAtUp, zAxis).Normalized;
Vector3F yAxis = Vector3F.Cross(zAxis, xAxis);
var lookAtSunView = new Matrix(xAxis.X, yAxis.X, zAxis.X, 0,
xAxis.Y, yAxis.Y, zAxis.Y, 0,
xAxis.Z, yAxis.Z, zAxis.Z, 0,
0, 0, 0, 1);
_parameterView.SetValue(lookAtSunView);
graphicsDevice.BlendState = GraphicsHelper.BlendStateNoColorWrite;
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
// Create small quad shortly behind the near plane.
// Note: We use an "untranslated" view matrix, so we can ignore the camera position.
float width = (projection.Top - projection.Bottom) * node.SunQuerySize;
Vector3F right = sunDirection.Orthonormal1 * (width / 2);
Vector3F up = sunDirection.Orthonormal2 * (width / 2);
Vector3F center = sunDirection * (projection.Near * 1.0001f);
_queryGeometry[0] = center - up - right;
_queryGeometry[1] = center + up - right;
_queryGeometry[2] = center - up + right;
_queryGeometry[3] = center + up + right;
if (node.CloudMap.Texture.Format == SurfaceFormat.Alpha8)
_passOcclusionAlpha.Apply();
else
_passOcclusionRgb.Apply();
node.OcclusionQuery.Begin();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _queryGeometry, 0, 2,
VertexPosition.VertexDeclaration);
node.OcclusionQuery.End();
}
}
else
{
node.IsQueryPending = false;
node.SunOcclusion = 0;
}
Matrix viewUntranslated = (Matrix)new Matrix44F(cameraNode.PoseWorld.Orientation.Transposed, new Vector3F(0));
_parameterView.SetValue(viewUntranslated);
// Render clouds.
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
if (context.IsHdrEnabled())
{
if (node.CloudMap.Texture.Format == SurfaceFormat.Alpha8)
_passCloudAlphaLinear.Apply();
else
_passCloudRgbLinear.Apply();
}
else
{
if (node.CloudMap.Texture.Format == SurfaceFormat.Alpha8)
_passCloudAlphaGamma.Apply();
else
_passCloudRgbGamma.Apply();
}
_submesh.Draw();
}
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
// Camera properties
var cameraNode = context.CameraNode;
Matrix view = (Matrix)new Matrix44F(cameraNode.PoseWorld.Orientation.Transposed, new Vector3F());
_parameterView.SetValue(view);
Matrix projection = cameraNode.Camera.Projection;
_parameterProjection.SetValue(projection);
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as GradientTextureSkyNode;
if (node == null)
continue;
// GradientTextureSkyNode is visible in current frame.
node.LastFrame = frame;
_parameterSunDirection.SetValue((Vector3)node.SunDirection);
_parameterTime.SetValue((float)node.TimeOfDay.TotalHours / 24);
_parameterColor.SetValue((Vector4)node.Color);
_parameterFrontTexture.SetValue(node.FrontTexture);
_parameterBackTexture.SetValue(node.BackTexture);
if (node.CieSkyStrength < Numeric.EpsilonF)
{
if (context.IsHdrEnabled())
_passLinear.Apply();
else
_passGamma.Apply();
}
else
{
var p = node.CieSkyParameters;
_parameterAbcd.SetValue(new Vector4(p.A, p.B, p.C, p.D));
_parameterEAndStrength.SetValue(new Vector2(p.E, node.CieSkyStrength));
if (context.IsHdrEnabled())
_passCieLinear.Apply();
else
_passCieGamma.Apply();
}
_submesh.Draw();
}
savedRenderState.Restore();
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.BlendState = GraphicsHelper.BlendStateAdd;
var viewport = graphicsDevice.Viewport;
_parameterViewportSize.SetValue(new Vector2(viewport.Width, viewport.Height));
_parameterGBuffer0.SetValue(context.GBuffer0);
_parameterGBuffer1.SetValue(context.GBuffer1);
var cameraNode = context.CameraNode;
Pose cameraPose = cameraNode.PoseWorld;
Matrix viewProjection = (Matrix)cameraNode.View * cameraNode.Camera.Projection;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
context.CameraNode.LastFrame = frame;
var isHdrEnabled = context.IsHdrEnabled();
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
{
continue;
}
var light = lightNode.Light as PointLight;
if (light == null)
{
continue;
}
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
float hdrScale = isHdrEnabled ? light.HdrScale : 1;
_parameterDiffuseColor.SetValue((Vector3)light.Color * light.DiffuseIntensity * hdrScale);
_parameterSpecularColor.SetValue((Vector3)light.Color * light.SpecularIntensity * hdrScale);
Pose lightPose = lightNode.PoseWorld;
bool hasShadow = (lightNode.Shadow != null && lightNode.Shadow.ShadowMask != null);
if (hasShadow)
{
switch (lightNode.Shadow.ShadowMaskChannel)
{
case 0: _parameterShadowMaskChannel.SetValue(new Vector4(1, 0, 0, 0)); break;
case 1: _parameterShadowMaskChannel.SetValue(new Vector4(0, 1, 0, 0)); break;
case 2: _parameterShadowMaskChannel.SetValue(new Vector4(0, 0, 1, 0)); break;
default: _parameterShadowMaskChannel.SetValue(new Vector4(0, 0, 0, 1)); break;
}
_parameterShadowMask.SetValue(lightNode.Shadow.ShadowMask);
}
_parameterPosition.SetValue((Vector3)(lightPose.Position - cameraPose.Position));
_parameterRange.SetValue(light.Range);
_parameterAttenuation.SetValue(light.Attenuation);
bool hasTexture = (light.Texture != null);
if (hasTexture)
{
_parameterTexture.SetValue(light.Texture);
// Cube maps are left handed --> Sample with inverted z. (Otherwise, the
// cube map and objects or texts in it are mirrored.)
var mirrorZ = Matrix44F.CreateScale(1, 1, -1);
_parameterTextureMatrix.SetValue((Matrix)(mirrorZ * lightPose.Inverse));
}
var rectangle = GraphicsHelper.GetViewportRectangle(cameraNode, viewport, lightPose.Position, light.Range);
var texCoordTopLeft = new Vector2F(rectangle.Left / (float)viewport.Width, rectangle.Top / (float)viewport.Height);
var texCoordBottomRight = new Vector2F(rectangle.Right / (float)viewport.Width, rectangle.Bottom / (float)viewport.Height);
GraphicsHelper.GetFrustumFarCorners(cameraNode.Camera.Projection, texCoordTopLeft, texCoordBottomRight, _frustumFarCorners);
// Convert frustum far corners from view space to world space.
for (int j = 0; j < _frustumFarCorners.Length; j++)
{
_frustumFarCorners[j] = (Vector3)cameraPose.ToWorldDirection((Vector3F)_frustumFarCorners[j]);
}
_parameterFrustumCorners.SetValue(_frustumFarCorners);
if (lightNode.Clip != null)
{
var data = lightNode.RenderData as LightRenderData;
if (data == null)
{
data = new LightRenderData();
lightNode.RenderData = data;
}
data.UpdateClipSubmesh(context.GraphicsService, lightNode);
graphicsDevice.DepthStencilState = GraphicsHelper.DepthStencilStateOnePassStencilFail;
graphicsDevice.BlendState = GraphicsHelper.BlendStateNoColorWrite;
_parameterWorldViewProjection.SetValue((Matrix)data.ClipMatrix * viewProjection);
_passClip.Apply();
data.ClipSubmesh.Draw();
graphicsDevice.DepthStencilState = lightNode.InvertClip
? GraphicsHelper.DepthStencilStateStencilEqual0
: GraphicsHelper.DepthStencilStateStencilNotEqual0;
graphicsDevice.BlendState = GraphicsHelper.BlendStateAdd;
}
else
{
graphicsDevice.DepthStencilState = DepthStencilState.None;
}
if (hasShadow)
{
if (hasTexture)
{
if (light.Texture.Format == SurfaceFormat.Alpha8)
{
_passShadowedTexturedAlpha.Apply();
}
else
{
_passShadowedTexturedRgb.Apply();
}
}
else
{
_passShadowed.Apply();
}
}
else
{
if (hasTexture)
{
if (light.Texture.Format == SurfaceFormat.Alpha8)
{
_passTexturedAlpha.Apply();
}
else
{
_passTexturedRgb.Apply();
}
}
else
{
_passDefault.Apply();
}
}
graphicsDevice.DrawQuad(rectangle);
}
savedRenderState.Restore();
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
var cameraNode = context.CameraNode;
_parameterViewInverse.SetValue(cameraNode.PoseWorld);
_parameterGBuffer0.SetValue(context.GBuffer0);
Viewport viewport = context.Viewport;
_parameterParameters0.SetValue(new Vector2(viewport.Width, viewport.Height));
if (_jitterMap == null)
{
_jitterMap = NoiseHelper.GetGrainTexture(context.GraphicsService, NoiseHelper.DefaultJitterMapWidth);
}
_parameterJitterMap.SetValue(_jitterMap);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
{
continue;
}
var shadow = lightNode.Shadow as StandardShadow;
if (shadow == null)
{
continue;
}
if (shadow.ShadowMap == null || shadow.ShadowMask == null)
{
continue;
}
// The effect must only render in a specific channel.
// Do not change blend state if the correct write channels is already set, e.g. if this
// shadow is part of a CompositeShadow, the correct blend state is already set.
if ((int)graphicsDevice.BlendState.ColorWriteChannels != (1 << shadow.ShadowMaskChannel))
{
graphicsDevice.BlendState = GraphicsHelper.BlendStateWriteSingleChannel[shadow.ShadowMaskChannel];
}
_parameterParameters1.SetValue(new Vector4(
shadow.Near,
shadow.Far,
shadow.EffectiveDepthBias,
shadow.EffectiveNormalOffset));
// If we use a subset of the Poisson kernel, we have to normalize the scale.
int numberOfSamples = Math.Min(shadow.NumberOfSamples, PoissonKernel.Length);
float filterRadius = shadow.FilterRadius;
if (numberOfSamples > 0)
{
filterRadius /= PoissonKernel[numberOfSamples - 1].Length();
}
_parameterParameters2.SetValue(new Vector3(
shadow.ShadowMap.Width,
filterRadius,
// The StandardShadow.JitterResolution is the number of texels per world unit.
// In the shader the parameter JitterResolution contains the division by the jitter map size.
shadow.JitterResolution / _jitterMap.Width));
_parameterLightPosition.SetValue((Vector3)cameraNode.PoseWorld.ToLocalPosition(lightNode.PoseWorld.Position));
Matrix cameraViewToShadowView = cameraNode.PoseWorld * shadow.View;
_parameterShadowView.SetValue(cameraViewToShadowView);
_parameterShadowMatrix.SetValue(cameraViewToShadowView * shadow.Projection);
_parameterShadowMap.SetValue(shadow.ShadowMap);
var rectangle = GraphicsHelper.GetViewportRectangle(cameraNode, viewport, lightNode);
Vector2F texCoordTopLeft = new Vector2F(rectangle.Left / (float)viewport.Width, rectangle.Top / (float)viewport.Height);
Vector2F texCoordBottomRight = new Vector2F(rectangle.Right / (float)viewport.Width, rectangle.Bottom / (float)viewport.Height);
GraphicsHelper.GetFrustumFarCorners(cameraNode.Camera.Projection, texCoordTopLeft, texCoordBottomRight, _frustumFarCorners);
_parameterFrustumCorners.SetValue(_frustumFarCorners);
var pass = GetPass(numberOfSamples);
if (numberOfSamples > 0)
{
if (_lastNumberOfSamples != numberOfSamples)
{
// Create an array with the first n samples and the rest set to 0.
_lastNumberOfSamples = numberOfSamples;
for (int j = 0; j < numberOfSamples; j++)
{
_samples[j].X = PoissonKernel[j].X;
_samples[j].Y = PoissonKernel[j].Y;
_samples[j].Z = 1.0f / numberOfSamples;
// Note [HelmutG]: I have tried weights decreasing with distance but that did not
// look better.
}
// Set the rest to zero.
for (int j = numberOfSamples; j < _samples.Length; j++)
{
_samples[j] = Vector3.Zero;
}
_parameterSamples.SetValue(_samples);
}
else if (i == 0)
{
// Apply offsets in the first loop.
_parameterSamples.SetValue(_samples);
}
}
pass.Apply();
graphicsDevice.DrawQuad(rectangle);
}
_parameterGBuffer0.SetValue((Texture2D)null);
_parameterJitterMap.SetValue((Texture2D)null);
_parameterShadowMap.SetValue((Texture2D)null);
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
continue;
var shadow = lightNode.Shadow as CompositeShadow;
if (shadow == null)
continue;
if (shadow.ShadowMask == null)
continue;
// Write into a single channel and use min() blending.
graphicsDevice.BlendState = BlendStates[shadow.ShadowMaskChannel];
for (int j = 0; j < shadow.Shadows.Count; j++)
{
// Temporarily set shadow mask and shadow mask channel of child shadows.
var childShadow = shadow.Shadows[j];
childShadow.ShadowMask = shadow.ShadowMask;
childShadow.ShadowMaskChannel = shadow.ShadowMaskChannel;
// Temporarily exchange LightNode.Shadow and render the child shadow.
lightNode.Shadow = childShadow;
for (int k = 0; k < _shadowMaskRenderers.Count; k++)
{
var renderer = _shadowMaskRenderers[k];
if (renderer.CanRender(lightNode, context))
{
renderer.Render(lightNode, context);
break;
}
}
// Remove shadow mask references. Strictly speaking, the mask is correct
// for the composite shadow. It is not correct for the child shadow. The child
// shadow only contributes to the mask. Therefore, childShadowMask should not be
// set.
childShadow.ShadowMask = null;
childShadow.ShadowMaskChannel = 0;
}
lightNode.Shadow = shadow;
}
savedRenderState.Restore();
}
private void RenderHiDef(SkyboxNode node, RenderContext context)
{
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.BlendState = node.EnableAlphaBlending ? BlendState.AlphaBlend : BlendState.Opaque;
bool sourceIsFloatingPoint = TextureHelper.IsFloatingPointFormat(node.Texture.Format);
// Set sampler state. (Floating-point textures cannot use linear filtering. (XNA would throw an exception.))
if (sourceIsFloatingPoint)
{
graphicsDevice.SamplerStates[0] = SamplerState.PointClamp;
}
else
{
graphicsDevice.SamplerStates[0] = SamplerState.LinearClamp;
}
var cameraNode = context.CameraNode;
Matrix view = cameraNode.View;
Matrix projection = cameraNode.Camera.Projection;
// Cube maps are left handed --> Sample with inverted z. (Otherwise, the
// cube map and objects or texts in it are mirrored.)
var mirrorZ = Matrix.CreateScale(1, 1, -1);
Matrix orientation = node.PoseWorld.Orientation;
_parameterWorldViewProjection.SetValue((Matrix)(projection * view * new Matrix(orientation, Vector3.Zero) * mirrorZ));
Vector4 color = node.EnableAlphaBlending
? new Vector4((Vector3)node.Color * node.Alpha, node.Alpha) // Premultiplied
: new Vector4((Vector3)node.Color, 1); // Opaque
_parameterColor.SetValue(color);
_textureParameter.SetValue(node.Texture);
if (node.Encoding is RgbEncoding)
{
_parameterTextureSize.SetValue(node.Texture.Size);
if (context.IsHdrEnabled())
{
_passRgbToRgb.Apply();
}
else
{
_passRgbToSRgb.Apply();
}
}
else if (node.Encoding is SRgbEncoding)
{
if (!sourceIsFloatingPoint)
{
if (context.IsHdrEnabled())
{
_passSRgbToRgb.Apply();
}
else
{
_passSRgbToSRgb.Apply();
}
}
else
{
throw new GraphicsException("sRGB encoded skybox cube maps must not use a floating point format.");
}
}
else if (node.Encoding is RgbmEncoding)
{
float max = GraphicsHelper.ToGamma(((RgbmEncoding)node.Encoding).Max);
_parameterRgbmMaxValue.SetValue(max);
if (context.IsHdrEnabled())
{
_passRgbmToRgb.Apply();
}
else
{
_passRgbmToSRgb.Apply();
}
}
else
{
throw new NotSupportedException("The SkyBoxRenderer supports only RgbEncoding, SRgbEncoding and RgbmEncoding.");
}
_submesh.Draw();
savedRenderState.Restore();
}
/// <summary>
/// Draws the textures.
/// </summary>
/// <param name="context">The render context.</param>
/// <remarks>
/// If <see cref="SpriteBatch"/> is <see langword="null"/>, then <see cref="Render"/> does
/// nothing.
/// </remarks>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is <see langword="null"/>.
/// </exception>
public void Render(RenderContext context)
{
if (context == null)
throw new ArgumentNullException("context");
if (SpriteBatch == null)
return;
var count = _textures.Count;
if (count == 0)
return;
context.Validate(SpriteBatch);
var savedRenderState = new RenderStateSnapshot(SpriteBatch.GraphicsDevice);
SpriteBatch.Begin(SpriteSortMode.Immediate, BlendState.AlphaBlend, SamplerState.LinearClamp, DepthStencilState.None, RasterizerState.CullNone);
for (int i = 0; i < count; i++)
{
var textureInfo = _textures[i];
if (textureInfo.Texture.IsDisposed)
continue;
if (TextureHelper.IsFloatingPointFormat(textureInfo.Texture.Format))
{
// Floating-point textures must not use linear hardware filtering!
SpriteBatch.GraphicsDevice.SamplerStates[0] = SamplerState.PointClamp;
SpriteBatch.Draw(textureInfo.Texture, textureInfo.Rectangle, Color.White);
SpriteBatch.GraphicsDevice.SamplerStates[0] = SamplerState.LinearClamp;
}
else
{
SpriteBatch.Draw(textureInfo.Texture, textureInfo.Rectangle, Color.White);
}
}
SpriteBatch.End();
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
// Lens flares are used sparsely in most games. --> Early out, if possible.
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
return;
context.Validate(_spriteBatch);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
bool hiDef = (graphicsDevice.GraphicsProfile == GraphicsProfile.HiDef);
// Camera properties
var cameraNode = context.CameraNode;
var cameraPose = cameraNode.PoseWorld;
Vector3 cameraForward = -cameraPose.Orientation.GetColumn(2); // 3rd column vector (negated)
Matrix view = cameraNode.View;
Matrix projection = cameraNode.Camera.Projection;
// The flares are positioned on a line from the origin through the center of
// the screen.
var viewport = graphicsDevice.Viewport;
Vector2F screenCenter = new Vector2F(viewport.Width / 2.0f, viewport.Height / 2.0f);
if (_transformParameter != null)
{
// ----- Original:
// Matrix matrix = (Matrix)(Matrix.CreateOrthographicOffCenter(0, viewport.Width, viewport.Height, 0, 0, 1)
// * Matrix.CreateTranslation(-0.5f, -0.5f, 0)); // Half-pixel offset (only for Direct3D 9).
// ----- Inlined:
Matrix matrix = new Matrix();
float oneOverW = 1.0f / viewport.Width;
float oneOverH = 1.0f / viewport.Height;
matrix.M11 = oneOverW * 2f;
matrix.M22 = -oneOverH * 2f;
matrix.M33 = -1f;
matrix.M44 = 1f;
matrix.M41 = -1f;
matrix.M42 = 1f;
#else
// Direct3D 9: half-pixel offset
matrix.M41 = -oneOverW - 1f;
matrix.M42 = oneOverH + 1f;
_transformParameter.SetValue(matrix);
}
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
// Choose current effect technique: Linear vs. Gamma-corrected Writes.
if (_effect != null)
_effect.CurrentTechnique = context.IsHdrEnabled() ? _techniqueLinear : _techniqueGamma;
_spriteBatch.Begin(SpriteSortMode.Texture, BlendState.Additive, null, null, null, _effect);
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as LensFlareNode;
if (node == null)
continue;
var lensFlare = node.LensFlare;
float size, intensity;
if (hiDef)
{
// HiDef profile
object dummy;
cameraNode.ViewDependentData.TryGetValue(node, out dummy);
var renderData = dummy as OcclusionData;
if (renderData == null || renderData.VisiblePixels == 0)
continue;
lensFlare.OnGetSizeAndIntensity(node, context, renderData.VisiblePixels, renderData.TotalPixels, out size, out intensity);
}
else
{
// Reach profile
lensFlare.OnGetSizeAndIntensity(node, context, 0, 0, out size, out intensity);
}
if (size <= 0 || intensity < MinIntensity)
continue;
// LensFlareNode is visible in current frame.
node.LastFrame = frame;
// Project position to screen space.
Vector2F screenPosition;
if (lensFlare.IsDirectional)
{
// ----- Directional lights
Vector3 lightDirectionWorld = -node.PoseWorld.Orientation.GetColumn(2); // 3rd column vector (negated)
Vector3 lightDirectionView = cameraPose.ToLocalDirection(lightDirectionWorld);
// In Reach profile check light direction for visibility.
// (In HiDef profile this check is done UpdateOcclusion().)
if (!hiDef && lightDirectionView.Z < 0)
{
// Light comes from behind camera.
continue;
}
Vector3 position = viewport.ProjectToViewport(-lightDirectionView, projection);
screenPosition = new Vector2F(position.X, position.Y);
}
else
{
// ----- Local lights
Vector3 position = node.PoseWorld.Position;
// In Reach profile check light direction for visibility.
// (In HiDef profile this check is done UpdateOcclusion().)
if (!hiDef)
{
Vector3 cameraToNode = position - cameraPose.Position;
float distance = Vector3.Dot(cameraToNode, cameraForward);
if (distance < cameraNode.Camera.Projection.Near)
{
// Light is behind near plane.
continue;
}
}
position = viewport.ProjectToViewport(position, projection * view);
screenPosition = new Vector2F(position.X, position.Y);
}
Vector2F flareVector = screenCenter - screenPosition;
foreach (var flare in lensFlare.Elements)
{
if (flare == null)
continue;
var packedTexture = flare.Texture;
if (packedTexture == null)
continue;
// Position the flare on a line from the lens flare origin through the
// screen center.
Vector2F position = screenPosition + flareVector * flare.Distance;
// The intensity controls the alpha value.
Vector4 color = flare.Color.ToVector4();
color.W *= intensity;
// Get texture.
Texture2D textureAtlas = packedTexture.TextureAtlas;
Vector2F textureAtlasSize = new Vector2F(textureAtlas.Width, textureAtlas.Height);
Vector2F textureOffset = packedTexture.Offset * textureAtlasSize;
Vector2F textureSize = packedTexture.Scale * textureAtlasSize;
Rectangle sourceRectangle = new Rectangle((int)textureOffset.X, (int)textureOffset.Y, (int)textureSize.X, (int)textureSize.Y);
// The image rotates around its origin (= reference point) - usually the
// center of the image.
Vector2F origin = textureSize * flare.Origin;
float rotation = flare.Rotation;
Vector2F direction = flareVector;
if (Numeric.IsNaN(rotation) && direction.TryNormalize())
{
// NaN = automatic rotation:
// Determine angle between direction and reference vector (0, 1):
// From http://www.euclideanspace.com/maths/algebra/vectors/angleBetween/issues/index.htm:
// rotation = atan2(v2.y,v2.x) - atan2(v1.y,v1.x)
// = atan2(v2.y,v2.x) - atan2(1,0)
// = atan2(v2.y,v2.x) - π/2
rotation = (float)Math.Atan2(direction.Y, direction.X) - ConstantsF.PiOver2;
}
Vector2F scale = size * viewport.Height * flare.Scale / textureSize.Y;
// Render flare using additive blending.
_spriteBatch.Draw(textureAtlas, (Vector2)position, sourceRectangle, new Color(color),
rotation, (Vector2)origin, (Vector2)scale, SpriteEffects.None, 0);
}
}
_spriteBatch.End();
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
// Set camera properties.
var cameraNode = context.CameraNode;
var cameraPose = cameraNode.PoseWorld;
Matrix viewInverse = cameraPose;
_parameterViewInverse.SetValue(viewInverse);
_parameterGBuffer0.SetValue(context.GBuffer0);
Viewport viewport = context.Viewport;
_parameterParameters0.SetValue(new Vector2(viewport.Width, viewport.Height));
// Set jitter map.
if (_jitterMap == null)
_jitterMap = NoiseHelper.GetGrainTexture(context.GraphicsService, NoiseHelper.DefaultJitterMapWidth);
_parameterJitterMap.SetValue(_jitterMap);
float cameraFar = context.CameraNode.Camera.Projection.Far;
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
continue;
var shadow = lightNode.Shadow as CascadedShadow;
if (shadow == null)
continue;
if (shadow.ShadowMap == null || shadow.ShadowMask == null)
continue;
// The effect must only render in a specific channel.
// Do not change blend state if the correct write channels is already set, e.g. if this
// shadow is part of a CompositeShadow, the correct blend state is already set.
if ((int)graphicsDevice.BlendState.ColorWriteChannels != (1 << shadow.ShadowMaskChannel))
graphicsDevice.BlendState = GraphicsHelper.BlendStateWriteSingleChannel[shadow.ShadowMaskChannel];
_parameterParameters1.SetValue(new Vector4(
shadow.FadeOutRange,
shadow.Distances[shadow.NumberOfCascades - 1],
shadow.VisualizeCascades ? 1 : 0,
shadow.ShadowFog));
float filterRadius = shadow.FilterRadius;
// If we use a subset of the Poisson kernel, we have to normalize the scale.
int numberOfSamples = Math.Min(shadow.NumberOfSamples, StandardShadowMaskRenderer.PoissonKernel.Length);
// Not all shader passes support cascade visualization. Use a similar pass instead.
if (shadow.VisualizeCascades)
{
if (numberOfSamples < 0)
{
numberOfSamples = 4;
}
else if (numberOfSamples == 0)
{
numberOfSamples = 1;
filterRadius = 0;
}
}
// The best dithered CSM supports max 22 samples.
if (shadow.CascadeSelection == ShadowCascadeSelection.BestDithered && numberOfSamples > 22)
numberOfSamples = 22;
if (numberOfSamples > 0)
filterRadius /= StandardShadowMaskRenderer.PoissonKernel[numberOfSamples - 1].Length();
_parameterParameters2.SetValue(new Vector4(
shadow.ShadowMap.Width,
shadow.ShadowMap.Height,
filterRadius,
// The StandardShadow.JitterResolution is the number of texels per world unit.
// In the shader the parameter JitterResolution contains the division by the jitter map size.
shadow.JitterResolution / _jitterMap.Width));
// Split distances.
if (_parameterDistances != null)
{
// Set not used entries to large values.
Vector4F distances = shadow.Distances;
for (int j = shadow.NumberOfCascades; j < 4; j++)
distances[j] = 10 * cameraFar;
_parameterDistances.SetValue((Vector4)distances);
}
Debug.Assert(shadow.ViewProjections.Length == 4);
for (int j = 0; j < _matrices.Length; j++)
_matrices[j] = viewInverse * shadow.ViewProjections[j];
_parameterShadowMatrices.SetValue(_matrices);
_parameterDepthBias.SetValue((Vector4)shadow.EffectiveDepthBias);
_parameterNormalOffset.SetValue((Vector4)shadow.EffectiveNormalOffset);
Vector3F lightBackwardWorld = lightNode.PoseWorld.Orientation.GetColumn(2);
_parameterLightDirection.SetValue((Vector3)cameraPose.ToLocalDirection(lightBackwardWorld));
_parameterNumberOfCascades.SetValue(shadow.NumberOfCascades);
_parameterShadowMap.SetValue(shadow.ShadowMap);
var rectangle = GraphicsHelper.GetViewportRectangle(cameraNode, viewport, lightNode);
Vector2F texCoordTopLeft = new Vector2F(rectangle.Left / (float)viewport.Width, rectangle.Top / (float)viewport.Height);
Vector2F texCoordBottomRight = new Vector2F(rectangle.Right / (float)viewport.Width, rectangle.Bottom / (float)viewport.Height);
GraphicsHelper.GetFrustumFarCorners(cameraNode.Camera.Projection, texCoordTopLeft, texCoordBottomRight, _frustumFarCorners);
_parameterFrustumCorners.SetValue(_frustumFarCorners);
var pass = GetPass(numberOfSamples, shadow.CascadeSelection, shadow.VisualizeCascades);
if (numberOfSamples > 0)
{
if (_lastNumberOfSamples != numberOfSamples)
{
// Create an array with the first n samples and the rest set to 0.
_lastNumberOfSamples = numberOfSamples;
for (int j = 0; j < numberOfSamples; j++)
{
_samples[j].Y = StandardShadowMaskRenderer.PoissonKernel[j].Y;
_samples[j].X = StandardShadowMaskRenderer.PoissonKernel[j].X;
_samples[j].Z = 1.0f / numberOfSamples;
}
// Set the rest to zero.
for (int j = numberOfSamples; j < _samples.Length; j++)
_samples[j] = Vector3.Zero;
_parameterSamples.SetValue(_samples);
}
else if (i == 0)
{
// Apply offsets in the first loop.
_parameterSamples.SetValue(_samples);
}
}
pass.Apply();
graphicsDevice.DrawQuad(rectangle);
}
_parameterGBuffer0.SetValue((Texture2D)null);
_parameterJitterMap.SetValue((Texture2D)null);
_parameterShadowMap.SetValue((Texture2D)null);
savedRenderState.Restore();
}
// Perform FFTs.
// 4 complex input images: source0.xy, source0.zw, source1.xy, source1.zw
// 2 targets: target0 = displacement map, target1 = normal map using Color format.
public void Process(RenderContext context, bool forward, Texture2D source0, Texture2D source1, RenderTarget2D target0, RenderTarget2D target1, float choppiness)
{
if (context == null)
throw new ArgumentNullException("context");
if (source0 == null)
throw new ArgumentNullException("source0");
if (source1 == null)
throw new ArgumentNullException("source1");
if (forward)
{
// For forward FFT, uncomment the LastPassScale stuff!
throw new NotImplementedException("Forward FFT not implemented.");
}
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var renderTargetPool = graphicsService.RenderTargetPool;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.None;
int size = source0.Width;
_parameterSize.SetValue((float)size);
_parameterChoppiness.SetValue(choppiness);
int numberOfButterflyPasses = (int)MathHelper.Log2GreaterOrEqual((uint)source0.Width);
// ReSharper disable once ConditionIsAlwaysTrueOrFalse
_parameterButterflyTexture.SetValue(GetButterflyTexture(forward, numberOfButterflyPasses));
var format = new RenderTargetFormat(size, size, false, source0.Format, DepthFormat.None);
var tempPing0 = renderTargetPool.Obtain2D(format);
var tempPing1 = renderTargetPool.Obtain2D(format);
var tempPong0 = renderTargetPool.Obtain2D(format);
var tempPong1 = renderTargetPool.Obtain2D(format);
//_parameterIsLastPass.SetValue(false);
// Perform horizontal and vertical FFT pass.
for (int i = 0; i < 2; i++)
{
//_parameterLastPassScale.SetValue(1);
// Perform butterfly passes. We ping-pong between two temp targets.
for (int pass = 0; pass < numberOfButterflyPasses; pass++)
{
_parameterButterflyIndex.SetValue(0.5f / numberOfButterflyPasses + (float)pass / numberOfButterflyPasses);
if (i == 0 && pass == 0)
{
// First pass.
_renderTargetBindings[0] = new RenderTargetBinding(tempPing0);
_renderTargetBindings[1] = new RenderTargetBinding(tempPing1);
graphicsDevice.SetRenderTargets(_renderTargetBindings);
_parameterSourceTexture0.SetValue(source0);
_parameterSourceTexture1.SetValue(source1);
}
else if (i == 1 && pass == numberOfButterflyPasses - 1)
{
// Last pass.
// We have explicit shader passes for the last FFT pass.
break;
//_parameterIsLastPass.SetValue(true);
//if (forward)
// _parameterLastPassScale.SetValue(1.0f / size / size);
//if (_renderTargetBindings[0].RenderTarget == tempPing0)
//{
// _renderTargetBindings[0] = new RenderTargetBinding(target0);
// _renderTargetBindings[1] = new RenderTargetBinding(target1);
// graphicsDevice.SetRenderTargets(_renderTargetBindings);
// _parameterSourceTexture0.SetValue(tempPing0);
// _parameterSourceTexture1.SetValue(tempPing1);
//}
//else
//{
// _renderTargetBindings[0] = new RenderTargetBinding(target0);
// _renderTargetBindings[1] = new RenderTargetBinding(target1);
// graphicsDevice.SetRenderTargets(_renderTargetBindings);
// _parameterSourceTexture0.SetValue(tempPong0);
// _parameterSourceTexture1.SetValue(tempPong1);
//}
}
else
{
// Intermediate pass.
if (_renderTargetBindings[0].RenderTarget == tempPing0)
{
_renderTargetBindings[0] = new RenderTargetBinding(tempPong0);
_renderTargetBindings[1] = new RenderTargetBinding(tempPong1);
graphicsDevice.SetRenderTargets(_renderTargetBindings);
_parameterSourceTexture0.SetValue(tempPing0);
_parameterSourceTexture1.SetValue(tempPing1);
}
else
{
_renderTargetBindings[0] = new RenderTargetBinding(tempPing0);
_renderTargetBindings[1] = new RenderTargetBinding(tempPing1);
graphicsDevice.SetRenderTargets(_renderTargetBindings);
_parameterSourceTexture0.SetValue(tempPong0);
_parameterSourceTexture1.SetValue(tempPong1);
}
}
if (i == 0)
_passFftHorizontal.Apply();
else
_passFftVertical.Apply();
graphicsDevice.DrawFullScreenQuad();
}
}
// Perform final vertical FFT passes. We have to perform them separately
// because displacement map and normal map usually have different bit depth.
// Final pass for displacement.
graphicsDevice.SetRenderTarget(target0);
if (_renderTargetBindings[1].RenderTarget == tempPing1)
_parameterSourceTexture0.SetValue(tempPing0);
else
_parameterSourceTexture0.SetValue(tempPong0);
_passFftDisplacement.Apply();
graphicsDevice.DrawFullScreenQuad();
// Final pass for normals.
graphicsDevice.SetRenderTarget(target1);
if (_renderTargetBindings[1].RenderTarget == tempPing1)
_parameterSourceTexture0.SetValue(tempPing1);
else
_parameterSourceTexture0.SetValue(tempPong1);
_passFftNormal.Apply();
graphicsDevice.DrawFullScreenQuad();
// Clean up.
_renderTargetBindings[0] = default(RenderTargetBinding);
_renderTargetBindings[1] = default(RenderTargetBinding);
_parameterButterflyTexture.SetValue((Texture2D)null);
_parameterSourceTexture0.SetValue((Texture2D)null);
_parameterSourceTexture1.SetValue((Texture2D)null);
renderTargetPool.Recycle(tempPing0);
renderTargetPool.Recycle(tempPing1);
renderTargetPool.Recycle(tempPong0);
renderTargetPool.Recycle(tempPong1);
savedRenderState.Restore();
// Reset the texture stages. If a floating point texture is set, we get exceptions
// when a sampler with bilinear filtering is set.
#if !MONOGAME
graphicsDevice.ResetTextures();
#endif
}
private void RenderReach(SkyboxNode node, RenderContext context)
{
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.BlendState = node.EnableAlphaBlending ? BlendState.AlphaBlend : BlendState.Opaque;
graphicsDevice.SamplerStates[0] = SamplerState.LinearClamp;
// Change viewport to render all pixels at max z.
var originalViewport = graphicsDevice.Viewport;
var viewport = originalViewport;
viewport.MinDepth = viewport.MaxDepth;
graphicsDevice.Viewport = viewport;
var cameraNode = context.CameraNode;
var view = cameraNode.View;
view.Translation = Vector3.Zero;
var projection = cameraNode.Camera.Projection;
var basicEffect = (BasicEffect)_effect;
basicEffect.View = (Matrix)view;
basicEffect.Projection = projection;
basicEffect.DiffuseColor = (Vector3)node.Color;
basicEffect.Alpha = node.EnableAlphaBlending ? node.Alpha : 1;
// Scale skybox such that it lies within view frustum:
// distance of a skybox corner = √3
// √3 * scale = far
// => scale = far / √3
// (Note: If near > far / √3 then the skybox will be clipped.)
float scale = projection.Far * 0.577f;
var orientation = node.PoseWorld.Orientation;
// Positive X
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.PositiveX);
basicEffect.World = (Matrix) new Matrix(orientation * scale, Vector3.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Negative X
// transform = scale * rotY(180°)
var transform = new Matrix(-scale, 0, 0, 0, scale, 0, 0, 0, -scale);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.NegativeX);
basicEffect.World = (Matrix) new Matrix(orientation * transform, Vector3.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Positive Y
// transform = scale * rotX(90°) * rotY(90°)
transform = new Matrix(0, 0, scale, scale, 0, 0, 0, scale, 0);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.PositiveY);
basicEffect.World = (Matrix) new Matrix(orientation * transform, Vector3.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Negative Y
// transform = scale * rotX(-90°) * rotY(90°)
transform = new Matrix(0, 0, scale, -scale, 0, 0, 0, -scale, 0);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.NegativeY);
basicEffect.World = (Matrix) new Matrix(orientation * transform, Vector3.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Cube maps are left-handed, where as the world is right-handed!
// Positive Z (= negative Z in world space)
// transform = scale * rotY(90°)
transform = new Matrix(0, 0, scale, 0, scale, 0, -scale, 0, 0);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.PositiveZ);
basicEffect.World = (Matrix) new Matrix(orientation * transform, Vector3.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
// Negative Z (= positive Z in world space)
// transform = scale * rotY(-90°)
transform = new Matrix(0, 0, -scale, 0, scale, 0, scale, 0, 0);
basicEffect.Texture = GetTexture2D(graphicsDevice, node.Texture, CubeMapFace.NegativeZ);
basicEffect.World = (Matrix) new Matrix(orientation * transform, Vector3.Zero);
basicEffect.CurrentTechnique.Passes[0].Apply();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _faceVertices, 0, 2);
graphicsDevice.Viewport = originalViewport;
savedRenderState.Restore();
}
internal void ProcessInternal(RenderContext context)
{
Debug.Assert(Enabled, "PostProcessor.ProcessInternal should only be called when the post-processor is enabled.");
var graphicsDevice = GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
// Set render states. The blend state must be set by the user!
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.None;
// Preform post-processing.
OnProcess(context);
savedRenderState.Restore();
// Reset the texture stages. If a floating point texture is set, we get exceptions
// when a sampler with bilinear filtering is set.
#if !MONOGAME
graphicsDevice.ResetTextures();
#endif
}
public void UpdateOcclusion(IList<SceneNode> nodes, RenderContext context)
{
// Measures the visibility of the light source by drawing a screen-aligned quad
// using an occlusion query. The query result is used in the next frame.
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
context.Validate(_basicEffect);
context.ThrowIfCameraMissing();
// Occlusion queries require HiDef profile.
var graphicsDevice = context.GraphicsService.GraphicsDevice;
if (graphicsDevice.GraphicsProfile == GraphicsProfile.Reach)
return;
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
return;
// Camera properties
var cameraNode = context.CameraNode;
var cameraPose = cameraNode.PoseWorld;
Vector3 cameraRight = cameraPose.Orientation.GetColumn(0); // 1st column vector
Vector3 cameraUp = cameraPose.Orientation.GetColumn(1); // 2nd column vector
Vector3 cameraForward = -cameraPose.Orientation.GetColumn(2); // 3rd column vector (negated)
Matrix view = cameraNode.View;
Matrix projection = cameraNode.Camera.Projection;
bool isOrthographic = (projection.M33 != 0);
// The following factors are used to estimate the size of a quad in screen space.
// (The equation is described in GraphicsHelper.GetScreenSize().)
float xScale = Math.Abs(projection.M00 / 2);
float yScale = Math.Abs(projection.M11 / 2);
var viewport = graphicsDevice.Viewport;
// Lens flares of directional lights are rendered directly on the screen.
// --> Set up projection transformation for rendering in screen space.
var orthographicProjection = Matrix.CreateOrthographicOffCenter(0, viewport.Width, viewport.Height, 0, 0, 1);
// Set render states for rendering occlusion query geometry (quad).
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = GraphicsHelper.BlendStateNoColorWrite;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as LensFlareNode;
if (node == null)
continue;
object dummy;
cameraNode.ViewDependentData.TryGetValue(node, out dummy);
var renderData = dummy as OcclusionData;
if (renderData == null)
{
renderData = new OcclusionData();
cameraNode.ViewDependentData[node] = renderData;
}
if (renderData.OcclusionQuery != null)
{
// Wait until previous occlusion query has completed.
if (!renderData.OcclusionQuery.IsComplete)
continue;
// ----- Read result of previous occlusion query.
int visiblePixels = renderData.OcclusionQuery.PixelCount;
// OcclusionData.TotalPixels is only an approximation.
// --> Clamp pixel count to [0, TotalPixels].
if (visiblePixels > renderData.TotalPixels)
visiblePixels = renderData.TotalPixels;
renderData.VisiblePixels = visiblePixels;
}
// ----- Run new occlusion query.
var lensFlare = node.LensFlare;
// The user can disable the lens flare by setting LensFlare.Intensity to 0.
float intensity = node.Intensity * lensFlare.Intensity;
if (intensity < MinIntensity)
{
renderData.VisiblePixels = 0;
continue;
}
float querySize;
if (lensFlare.IsDirectional)
{
// ----- Directional lights
// Ignore directional lights if camera has orthographic projection.
// (The light source is infinitely far way and the camera frustum has only
// limited width and height. It is very unlikely that camera catches the
// directional light.
if (isOrthographic)
{
renderData.VisiblePixels = 0;
continue;
}
// Directional lights are positioned at infinite distance and are not affected
// by the position of the camera.
Vector3 lightDirectionWorld = -node.PoseWorld.Orientation.GetColumn(2); // 3rd column vector (negated)
Vector3 lightDirectionView = cameraPose.ToLocalDirection(lightDirectionWorld);
if (lightDirectionView.Z < 0)
{
// Light comes from behind camera.
renderData.VisiblePixels = 0;
continue;
}
// Project position to viewport.
Vector3 screenPosition = viewport.ProjectToViewport(-lightDirectionView, projection);
// LensFlare.QuerySize is the size relative to viewport.
querySize = lensFlare.QuerySize * viewport.Height;
renderData.TotalPixels = (int)(querySize * querySize);
if (renderData.TotalPixels < MinPixelSize)
{
// Cull small light sources.
renderData.VisiblePixels = 0;
continue;
}
// Draw quad in screen space.
querySize /= 2;
_queryGeometry[0].Position = new Vector3(screenPosition.X - querySize, screenPosition.Y - querySize, -1);
_queryGeometry[1].Position = new Vector3(screenPosition.X + querySize, screenPosition.Y - querySize, -1);
_queryGeometry[2].Position = new Vector3(screenPosition.X - querySize, screenPosition.Y + querySize, -1);
_queryGeometry[3].Position = new Vector3(screenPosition.X + querySize, screenPosition.Y + querySize, -1);
_basicEffect.World = Matrix.Identity;
_basicEffect.View = Matrix.Identity;
_basicEffect.Projection = orthographicProjection;
_basicEffect.CurrentTechnique.Passes[0].Apply();
if (renderData.OcclusionQuery == null)
renderData.OcclusionQuery = new OcclusionQuery(graphicsDevice);
renderData.OcclusionQuery.Begin();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _queryGeometry, 0, 2);
renderData.OcclusionQuery.End();
}
else
{
// ----- Local lights
// Determine planar distance to camera.
Vector3 position = node.PoseWorld.Position;
Vector3 cameraToNode = position - cameraPose.Position;
float distance = Vector3.Dot(cameraToNode, cameraForward);
if (distance < cameraNode.Camera.Projection.Near)
{
// Light is behind near plane.
renderData.VisiblePixels = 0;
continue;
}
Debug.Assert(
node.ScaleWorld.X > 0 && node.ScaleWorld.Y > 0 && node.ScaleWorld.Z > 0,
"Assuming that all scale factors are positive.");
// LensFlare.QuerySize is the size in world space.
querySize = node.ScaleWorld.LargestComponent * node.LensFlare.QuerySize;
// Estimate screen space size of query geometry.
float screenSizeX = viewport.Width * querySize * xScale;
float screenSizeY = viewport.Height * querySize * yScale;
if (!isOrthographic)
{
float oneOverDistance = 1 / distance;
screenSizeX *= oneOverDistance;
screenSizeY *= oneOverDistance;
}
renderData.TotalPixels = (int)(screenSizeX * screenSizeY);
if (renderData.TotalPixels < MinPixelSize)
{
// Cull small light sources.
renderData.VisiblePixels = 0;
continue;
}
// Draw screen-aligned quad in world space.
querySize /= 2;
Vector3 upVector = querySize * cameraUp;
Vector3 rightVector = querySize * cameraRight;
// Offset quad by half its size towards the camera. Otherwise, the geometry
// of the light source could obstruct the query geometry.
position -= querySize * cameraToNode.Normalized;
_queryGeometry[0].Position = (Vector3)(position - rightVector - upVector);
_queryGeometry[1].Position = (Vector3)(position - rightVector + upVector);
_queryGeometry[2].Position = (Vector3)(position + rightVector - upVector);
_queryGeometry[3].Position = (Vector3)(position + rightVector + upVector);
_basicEffect.World = Matrix.Identity;
_basicEffect.View = (Matrix)view;
_basicEffect.Projection = (Matrix)projection;
_basicEffect.CurrentTechnique.Passes[0].Apply();
if (renderData.OcclusionQuery == null)
renderData.OcclusionQuery = new OcclusionQuery(graphicsDevice);
renderData.OcclusionQuery.Begin();
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _queryGeometry, 0, 2);
renderData.OcclusionQuery.End();
}
}
savedRenderState.Restore();
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
// Camera properties
var cameraNode = context.CameraNode;
Matrix view = (Matrix)cameraNode.View;
Matrix projection = cameraNode.Camera.Projection;
Matrix viewProjection = view * projection;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
// Blend additively over any cosmos textures.
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.BlendState = BlendState.Additive;
_effectParameterViewportSize.SetValue(new Vector2(context.Viewport.Width, context.Viewport.Height));
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as StarfieldNode;
if (node == null)
continue;
// SkyboxNode is visible in current frame.
node.LastFrame = frame;
if (node.Stars != null && node.Stars.Count > 0)
{
Matrix world = (Matrix)new Matrix44F(node.PoseWorld.Orientation, Vector3F.Zero);
_effectParameterWorldViewProjection.SetValue(world * viewProjection);
// In [ZFX] the star luminance of the precomputed star data is scaled with
// float const viewFactor = tan(fov);
// float const resolutionFactor = resolution / 1920.0f;
// float const luminanceScale = 1.0f / (viewFactor * viewFactor) * (resolutionFactor * resolutionFactor);
// We ignore this here, but we could add this factor to the Intensity parameter.
_effectParameterIntensity.SetValue((Vector3)node.Color);
if (context.IsHdrEnabled())
_effectPassLinear.Apply();
else
_effectPassGamma.Apply();
var mesh = GetStarfieldMesh(node, context);
mesh.Draw();
}
}
savedRenderState.Restore();
}
private void Render(RenderContext context, Vector4F color, Texture2D colorTexture, bool preserveColor)
{
if (context == null)
throw new ArgumentNullException("context");
context.Validate(_effect);
context.ThrowIfCameraMissing();
context.ThrowIfGBuffer0Missing();
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = GraphicsHelper.DepthStencilStateAlways;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
if (preserveColor)
graphicsDevice.BlendState = GraphicsHelper.BlendStateNoColorWrite;
else
graphicsDevice.BlendState = BlendState.Opaque;
if (colorTexture != null)
{
if (TextureHelper.IsFloatingPointFormat(colorTexture.Format))
graphicsDevice.SamplerStates[1] = SamplerState.PointClamp;
else
graphicsDevice.SamplerStates[1] = SamplerState.LinearClamp;
}
var projection = context.CameraNode.Camera.Projection;
bool isPerspective = projection is PerspectiveProjection;
float near = projection.Near * NearBias;
float far = projection.Far * FarBias;
var biasedProjection = isPerspective
? Matrix44F.CreatePerspectiveOffCenter(
projection.Left, projection.Right,
projection.Bottom, projection.Top,
near, far)
: Matrix44F.CreateOrthographicOffCenter(
projection.Left, projection.Right,
projection.Bottom, projection.Top,
near, far);
var viewport = graphicsDevice.Viewport;
_parameterViewportSize.SetValue(new Vector2(viewport.Width, viewport.Height));
_parameterProjection.SetValue((Matrix)biasedProjection);
_parameterCameraFar.SetValue(projection.Far);
_parameterGBuffer0.SetValue(context.GBuffer0);
_parameterColor.SetValue((Vector4)color);
_parameterSourceTexture.SetValue(colorTexture);
_effect.CurrentTechnique = isPerspective ? _techniquePerspective : _techniqueOrthographic;
_effect.CurrentTechnique.Passes[(colorTexture == null) ? 0 : 1].Apply();
graphicsDevice.DrawFullScreenQuad();
graphicsDevice.ResetTextures();
savedRenderState.Restore();
}
/// <summary>
/// Draws the batched primitives.
/// </summary>
/// <param name="context">The render context.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is <see langword="null"/>.
/// </exception>
public void Render(RenderContext context)
{
if (context == null)
throw new ArgumentNullException("context");
if (Effect == null || _primitives.Count == 0)
return;
context.Validate(Effect);
context.ThrowIfCameraMissing();
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
if (AutoRasterizerState)
graphicsDevice.RasterizerState = DrawWireFrame ? GraphicsHelper.RasterizerStateWireFrame : GraphicsHelper.RasterizerStateCullCounterClockwise;
// Sort primitives if necessary.
Matrix view = context.CameraNode.View;
if (SortBackToFront && _usesTransparency)
{
// Update depth (distance from camera).
foreach (var job in _primitives)
{
Vector3 position = job.Pose.Position;
job.Depth = view.TransformPosition(position).Z;
}
_primitives.Sort(PrimitiveJobDepthComparer.Instance);
}
// Reset the texture stages. If a floating point texture is set, we get exceptions
// when a sampler with bilinear filtering is set.
graphicsDevice.ResetTextures();
Effect.LightingEnabled = !DrawWireFrame;
Effect.TextureEnabled = false;
Effect.View = (Matrix)view;
Effect.Projection = context.CameraNode.Camera.Projection;
foreach (var job in _primitives)
{
Effect.Alpha = job.Color.A / 255.0f;
Effect.DiffuseColor = job.Color.ToVector3();
Effect.VertexColorEnabled = false;
switch (job.Type)
{
case PrimitiveJobType.Box:
RenderBox(graphicsService, job);
break;
case PrimitiveJobType.Capsule:
RenderCapsule(graphicsService, job);
break;
case PrimitiveJobType.Cone:
RenderCone(graphicsService, job);
break;
case PrimitiveJobType.Cylinder:
RenderCylinder(graphicsService, job);
break;
case PrimitiveJobType.ViewVolume:
RenderViewVolume(job, context);
break;
case PrimitiveJobType.Sphere:
RenderSphere(graphicsService, job, context);
break;
case PrimitiveJobType.Shape:
RenderShape(graphicsDevice, job);
break;
case PrimitiveJobType.Model:
RenderModel(graphicsDevice, job);
break;
case PrimitiveJobType.Submesh:
RenderSubmesh(job);
break;
}
}
if (DrawWireFrame)
{
_lineBatch.Render(context);
_lineBatch.Clear();
}
savedRenderState.Restore();
}
/// <inheritdoc/>
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
{
return;
}
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
// Camera properties
var cameraNode = context.CameraNode;
Matrix view = (Matrix) new Matrix(cameraNode.PoseWorld.Orientation.Transposed, new Vector3());
_parameterView.SetValue(view);
Matrix projection = cameraNode.Camera.Projection;
_parameterProjection.SetValue(projection);
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as ScatteringSkyNode;
if (node == null)
{
continue;
}
// ScatteringSkyNode is visible in current frame.
node.LastFrame = frame;
_parameterSunDirection.SetValue((Vector3)node.SunDirection);
_parameterSunIntensity.SetValue((Vector3)(node.SunIntensity * node.SunColor));
_parameterRadii.SetValue(new Vector4(
node.AtmosphereHeight + node.PlanetRadius, // Atmosphere radius
node.PlanetRadius, // Ground radius
node.ObserverAltitude + node.PlanetRadius, // Observer radius
node.ScaleHeight)); // Absolute Scale height
_parameterNumberOfSamples.SetValue(node.NumberOfSamples);
_parameterBetaRayleigh.SetValue((Vector3)node.BetaRayleigh);
_parameterBetaMie.SetValue((Vector3)node.BetaMie);
_parameterGMie.SetValue(node.GMie);
_parameterTransmittance.SetValue(node.Transmittance);
if (node.BaseHorizonColor.IsNumericallyZero && node.BaseZenithColor.IsNumericallyZero)
{
// No base color.
if (context.IsHdrEnabled())
{
_passLinear.Apply();
}
else
{
_passGamma.Apply();
}
}
else
{
// Add base color.
_parameterBaseHorizonColor.SetValue((Vector4) new Vector4(node.BaseHorizonColor, node.BaseColorShift));
_parameterBaseZenithColor.SetValue((Vector3)node.BaseZenithColor);
if (context.IsHdrEnabled())
{
_passLinearWithBaseColor.Apply();
}
else
{
_passGammaWithBaseColor.Apply();
}
}
_submesh.Draw();
}
savedRenderState.Restore();
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
{
return;
}
context.Validate(_spriteBatch);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
// Camera properties
var cameraNode = context.CameraNode;
Matrix44F viewProjection = cameraNode.Camera.Projection * cameraNode.View;
var viewport = graphicsDevice.Viewport;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
SpriteSortMode sortMode;
switch (order)
{
case RenderOrder.Default:
sortMode = SpriteSortMode.Texture;
break;
case RenderOrder.FrontToBack:
sortMode = SpriteSortMode.FrontToBack;
break;
case RenderOrder.BackToFront:
sortMode = SpriteSortMode.BackToFront;
break;
case RenderOrder.UserDefined:
default:
sortMode = SpriteSortMode.Deferred;
break;
}
_spriteBatch.Begin(sortMode, graphicsDevice.BlendState, null, graphicsDevice.DepthStencilState, null);
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as SpriteNode;
if (node == null)
{
continue;
}
// SpriteNode is visible in current frame.
node.LastFrame = frame;
// Position, size, and origin in pixels.
Vector3F position = new Vector3F();
Vector2 size = new Vector2();
Vector2 origin = new Vector2();
var bitmapSprite = node.Sprite as ImageSprite;
if (bitmapSprite != null)
{
var packedTexture = bitmapSprite.Texture;
if (packedTexture != null)
{
// Project into viewport and snap to pixels.
position = viewport.ProjectToViewport(node.PoseWorld.Position, viewProjection);
position.X = (int)(position.X + 0.5f);
position.Y = (int)(position.Y + 0.5f);
// Get source rectangle (pixel bounds).
var sourceRectangle = packedTexture.GetBounds(node.AnimationTime);
size = new Vector2(sourceRectangle.Width, sourceRectangle.Height);
// Premultiply color.
Vector3F color3F = node.Color;
float alpha = node.Alpha;
Color color = new Color(color3F.X * alpha, color3F.Y * alpha, color3F.Z * alpha, alpha);
// Get absolute origin (relative to pixel bounds).
origin = (Vector2)node.Origin * size;
// Draw using SpriteBatch.
_spriteBatch.Draw(
packedTexture.TextureAtlas, new Vector2(position.X, position.Y), sourceRectangle,
color, node.Rotation, origin, (Vector2)node.Scale, SpriteEffects.None, position.Z);
}
}
else
{
var textSprite = node.Sprite as TextSprite;
if (textSprite != null)
{
var font = textSprite.Font ?? _spriteFont;
if (font != null)
{
// Text can be a string or StringBuilder.
var text = textSprite.Text as string;
if (text != null)
{
if (text.Length > 0)
{
// Project into viewport and snap to pixels.
position = viewport.ProjectToViewport(node.PoseWorld.Position, viewProjection);
position.X = (int)(position.X + 0.5f);
position.Y = (int)(position.Y + 0.5f);
// Premultiply color.
Vector3F color3F = node.Color;
float alpha = node.Alpha;
Color color = new Color(color3F.X * alpha, color3F.Y * alpha, color3F.Z * alpha, alpha);
// Get absolute origin (relative to pixel bounds).
size = font.MeasureString(text);
origin = (Vector2)node.Origin * size;
// Draw using SpriteBatch.
_spriteBatch.DrawString(
font, text, new Vector2(position.X, position.Y),
color, node.Rotation, origin, (Vector2)node.Scale,
SpriteEffects.None, position.Z);
}
}
else
{
var stringBuilder = textSprite.Text as StringBuilder;
if (stringBuilder != null && stringBuilder.Length > 0)
{
// Project into viewport and snap to pixels.
position = viewport.ProjectToViewport(node.PoseWorld.Position, viewProjection);
position.X = (int)(position.X + 0.5f);
position.Y = (int)(position.Y + 0.5f);
// Premultiply color.
Vector3F color3F = node.Color;
float alpha = node.Alpha;
Color color = new Color(color3F.X * alpha, color3F.Y * alpha, color3F.Z * alpha, alpha);
// Get absolute origin (relative to pixel bounds).
size = font.MeasureString(stringBuilder);
origin = (Vector2)node.Origin * size;
// Draw using SpriteBatch.
_spriteBatch.DrawString(
font, stringBuilder, new Vector2(position.X, position.Y),
color, node.Rotation, origin, (Vector2)node.Scale,
SpriteEffects.None, position.Z);
}
}
}
}
}
// Store bounds an depth for hit tests.
node.LastBounds = new Rectangle(
(int)(position.X - origin.X),
(int)(position.Y - origin.Y),
(int)(size.X * node.Scale.X),
(int)(size.Y * node.Scale.Y));
node.LastDepth = position.Z;
}
_spriteBatch.End();
savedRenderState.Restore();
}
internal override void ProcessJobs(RenderContext context, RenderOrder order)
{
var graphicsDevice = _graphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
var target = context.RenderTarget;
var viewport = context.Viewport;
Debug.Assert(_shadowMasks.Length > 0);
Debug.Assert(_shadowMasks[0] != null);
RenderTarget2D lowResTarget = null;
if (UseHalfResolution && Numeric.IsGreater(UpsampleDepthSensitivity, 0))
{
// Half-res rendering with upsampling.
var format = new RenderTargetFormat(_shadowMasks[0]);
format.Width /= 2;
format.Height /= 2;
lowResTarget = _graphicsService.RenderTargetPool.Obtain2D(format);
}
int index = 0;
var jobs = Jobs.Array;
int jobCount = Jobs.Count;
int lastShadowMaskIndex = -1;
while (index < jobCount)
{
int shadowMaskIndex = (int)(jobs[index].SortKey >> 16);
var renderer = jobs[index].Renderer;
// Find end of current batch.
int endIndexExclusive = index + 1;
while (endIndexExclusive < jobCount)
{
if ((int)(jobs[endIndexExclusive].SortKey >> 16) != lastShadowMaskIndex ||
jobs[endIndexExclusive].Renderer != renderer)
{
break;
}
endIndexExclusive++;
}
// Restore the render state. (The integrated scene node renderers properly
// restore the render state, but third-party renderers might mess it up.)
if (index > 0)
{
savedRenderState.Restore();
}
if (shadowMaskIndex != lastShadowMaskIndex)
{
// Done with current shadow mask. Apply filter.
if (lastShadowMaskIndex >= 0)
{
PostProcess(context, context.RenderTarget, _shadowMasks[lastShadowMaskIndex]);
}
// Switch to next shadow mask.
lastShadowMaskIndex = shadowMaskIndex;
var shadowMask = lowResTarget ?? _shadowMasks[shadowMaskIndex];
// Set device render target and clear it to white (= no shadow).
graphicsDevice.SetRenderTarget(shadowMask);
context.RenderTarget = shadowMask;
context.Viewport = graphicsDevice.Viewport;
graphicsDevice.Clear(Color.White);
}
// Submit batch to renderer.
// (Use Accessor to expose current batch as IList<SceneNode>.)
JobsAccessor.Set(Jobs, index, endIndexExclusive);
renderer.Render(JobsAccessor, context, order);
JobsAccessor.Reset();
index = endIndexExclusive;
}
// Done with last shadow mask. Apply filter.
PostProcess(context, context.RenderTarget, _shadowMasks[lastShadowMaskIndex]);
savedRenderState.Restore();
graphicsDevice.ResetTextures();
graphicsDevice.SetRenderTarget(null);
context.RenderTarget = target;
context.Viewport = viewport;
_graphicsService.RenderTargetPool.Recycle(lowResTarget);
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
if (context.Scene == null)
{
throw new ArgumentException("Scene needs to be set in render context.", "context");
}
if (context.CameraNode == null)
{
throw new ArgumentException("Camera needs to be set in render context.", "context");
}
if (!(context.CameraNode.Camera.Projection is PerspectiveProjection))
{
throw new ArgumentException("The camera in the render context must use a perspective projection.", "context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
var graphicsDevice = context.GraphicsService.GraphicsDevice;
int frame = context.Frame;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalCameraNode = context.CameraNode;
var originalLodCameraNode = context.LodCameraNode;
float originalLodBias = context.LodBias;
var originalReferenceNode = context.ReferenceNode;
Pose originalCameraPose = originalCameraNode.PoseWorld;
Vector3F originalCameraPosition = originalCameraPose.Position;
Matrix33F originalCameraOrientation = originalCameraPose.Orientation;
Vector3F right = originalCameraOrientation.GetColumn(0);
Vector3F up = originalCameraOrientation.GetColumn(1);
Vector3F back = originalCameraOrientation.GetColumn(2);
try
{
// Use foreach instead of for-loop to catch InvalidOperationExceptions in
// case the collection is modified.
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as PlanarReflectionNode;
if (node == null)
{
continue;
}
// Update each node only once per frame.
if (node.LastFrame == frame)
{
continue;
}
node.LastFrame = frame;
var texture = node.RenderToTexture.Texture;
if (texture == null)
{
continue;
}
var renderTarget = texture as RenderTarget2D;
if (renderTarget == null)
{
throw new GraphicsException(
"PlanarReflectionNode.RenderToTexture.Texture is invalid. The texture must be a RenderTarget2D.");
}
// RenderToTexture instances can be shared. --> Update them only once per frame.
if (node.RenderToTexture.LastFrame == frame)
{
continue;
}
// Do not render if we look at the back of the reflection plane.
Vector3F planeNormal = node.NormalWorld;
Vector3F planePosition = node.PoseWorld.Position;
Vector3F planeToCamera = originalCameraPosition - planePosition;
if (Vector3F.Dot(planeNormal, planeToCamera) < 0)
{
continue;
}
var cameraNode = node.CameraNode;
// Reflect camera pose.
Pose cameraPose;
cameraPose.Position = planePosition + Reflect(planeToCamera, planeNormal);
cameraPose.Orientation = new Matrix33F();
cameraPose.Orientation.SetColumn(0, Reflect(right, planeNormal));
cameraPose.Orientation.SetColumn(1, -Reflect(up, planeNormal));
cameraPose.Orientation.SetColumn(2, Reflect(back, planeNormal));
cameraNode.PoseWorld = cameraPose;
// The projection of the player camera.
var originalProjection = originalCameraNode.Camera.Projection;
// The projection of the reflected camera.
var projection = (PerspectiveProjection)cameraNode.Camera.Projection;
// Choose optimal projection. We get the screen-space bounds of the reflection node.
// Then we make the FOV so small that it exactly contains the node.
projection.Set(originalProjection);
var bounds = GraphicsHelper.GetBounds(cameraNode, node);
// Abort if the bounds are empty.
if (Numeric.AreEqual(bounds.X, bounds.Z) || Numeric.AreEqual(bounds.Y, bounds.W))
{
continue;
}
// Apply FOV scale to bounds.
float fovScale = node.FieldOfViewScale;
float deltaX = (bounds.Z - bounds.X) * (fovScale - 1) / 2;
bounds.X -= deltaX;
bounds.Z += deltaX;
float deltaY = (bounds.W - bounds.Y) * (fovScale - 1) / 2;
bounds.Y -= deltaY;
bounds.W += deltaY;
// Update projection to contain only the node bounds.
projection.Left = projection.Left + bounds.X * projection.Width;
projection.Right = projection.Left + bounds.Z * projection.Width;
projection.Top = projection.Top - bounds.Y * projection.Height;
projection.Bottom = projection.Top - bounds.W * projection.Height;
// Set far clip plane.
if (node.Far.HasValue)
{
projection.Far = node.Far.Value;
}
// Set near clip plane.
Vector3F planeNormalCamera = cameraPose.ToLocalDirection(-node.NormalWorld);
Vector3F planePointCamera = cameraPose.ToLocalPosition(node.PoseWorld.Position);
projection.NearClipPlane = new Plane(planeNormalCamera, planePointCamera);
context.CameraNode = cameraNode;
context.LodCameraNode = cameraNode;
context.LodBias = node.LodBias ?? originalLodBias;
context.ReferenceNode = node;
context.RenderTarget = renderTarget;
context.Viewport = new Viewport(0, 0, renderTarget.Width, renderTarget.Height);
RenderCallback(context);
// Update other properties of RenderToTexture.
node.RenderToTexture.LastFrame = frame;
node.RenderToTexture.TextureMatrix = GraphicsHelper.ProjectorBiasMatrix
* cameraNode.Camera.Projection
* cameraNode.PoseWorld.Inverse;
}
}
catch (InvalidOperationException exception)
{
throw new GraphicsException(
"InvalidOperationException was raised in PlanarReflectionRenderer.Render(). "
+ "This can happen if a SceneQuery instance that is currently in use is modified in the "
+ "RenderCallback. --> Use different SceneQuery types in the method which calls "
+ "SceneCaptureRenderer.Render() and in the RenderCallback method.",
exception);
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.CameraNode = originalCameraNode;
context.LodCameraNode = originalLodCameraNode;
context.LodBias = originalLodBias;
context.ReferenceNode = originalReferenceNode;
}
public override void Render(IList<SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
throw new ArgumentNullException("nodes");
if (context == null)
throw new ArgumentNullException("context");
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
return;
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
var cameraNode = context.CameraNode;
_parameterViewInverse.SetValue(cameraNode.PoseWorld);
_parameterGBuffer0.SetValue(context.GBuffer0);
Viewport viewport = context.Viewport;
_parameterParameters0.SetValue(new Vector2(viewport.Width, viewport.Height));
if (_jitterMap == null)
_jitterMap = NoiseHelper.GetGrainTexture(context.GraphicsService, NoiseHelper.DefaultJitterMapWidth);
_parameterJitterMap.SetValue(_jitterMap);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
continue;
var light = lightNode.Light as PointLight;
if (light == null)
return;
var shadow = lightNode.Shadow as CubeMapShadow;
if (shadow == null)
continue;
if (shadow.ShadowMap == null || shadow.ShadowMask == null)
continue;
// The effect must only render in a specific channel.
// Do not change blend state if the correct write channels is already set, e.g. if this
// shadow is part of a CompositeShadow, the correct blend state is already set.
if ((int)graphicsDevice.BlendState.ColorWriteChannels != (1 << shadow.ShadowMaskChannel))
graphicsDevice.BlendState = GraphicsHelper.BlendStateWriteSingleChannel[shadow.ShadowMaskChannel];
_parameterParameters1.SetValue(new Vector4(
shadow.Near,
light.Range,
shadow.EffectiveDepthBias,
shadow.EffectiveNormalOffset));
// If we use a subset of the Poisson kernel, we have to normalize the scale.
int numberOfSamples = Math.Min(shadow.NumberOfSamples, StandardShadowMaskRenderer.PoissonKernel.Length);
float filterRadius = shadow.FilterRadius;
if (numberOfSamples > 0)
filterRadius /= StandardShadowMaskRenderer.PoissonKernel[numberOfSamples - 1].Length();
_parameterParameters2.SetValue(new Vector3(
shadow.ShadowMap.Size,
filterRadius,
// The StandardShadow.JitterResolution is the number of texels per world unit.
// In the shader the parameter JitterResolution contains the division by the jitter map size.
shadow.JitterResolution / _jitterMap.Width));
_parameterLightPosition.SetValue((Vector3)cameraNode.PoseWorld.ToLocalPosition(lightNode.PoseWorld.Position));
_parameterShadowView.SetValue(lightNode.PoseWorld.Inverse * cameraNode.PoseWorld);
_parameterShadowMap.SetValue(shadow.ShadowMap);
var rectangle = GraphicsHelper.GetViewportRectangle(cameraNode, viewport, lightNode);
Vector2F texCoordTopLeft = new Vector2F(rectangle.Left / (float)viewport.Width, rectangle.Top / (float)viewport.Height);
Vector2F texCoordBottomRight = new Vector2F(rectangle.Right / (float)viewport.Width, rectangle.Bottom / (float)viewport.Height);
GraphicsHelper.GetFrustumFarCorners(cameraNode.Camera.Projection, texCoordTopLeft, texCoordBottomRight, _frustumFarCorners);
_parameterFrustumCorners.SetValue(_frustumFarCorners);
var pass = GetPass(numberOfSamples);
if (numberOfSamples > 0)
{
if (_lastNumberOfSamples != numberOfSamples)
{
// Create an array with the first n samples and the rest set to 0.
_lastNumberOfSamples = numberOfSamples;
for (int j = 0; j < numberOfSamples; j++)
{
_samples[j].Y = StandardShadowMaskRenderer.PoissonKernel[j].Y;
_samples[j].X = StandardShadowMaskRenderer.PoissonKernel[j].X;
_samples[j].Z = 1.0f / numberOfSamples;
}
// Set the rest to zero.
for (int j = numberOfSamples; j < _samples.Length; j++)
_samples[j] = Vector3.Zero;
_parameterSamples.SetValue(_samples);
}
else if (i == 0)
{
// Apply offsets in the first loop.
_parameterSamples.SetValue(_samples);
}
}
pass.Apply();
graphicsDevice.DrawQuad(rectangle);
}
_parameterGBuffer0.SetValue((Texture2D)null);
_parameterJitterMap.SetValue((Texture2D)null);
_parameterShadowMap.SetValue((Texture2D)null);
savedRenderState.Restore();
}
private void Render(RenderContext context, Vector4F color, Texture2D colorTexture, bool preserveColor)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
context.Validate(_effect);
context.ThrowIfCameraMissing();
context.ThrowIfGBuffer0Missing();
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = GraphicsHelper.DepthStencilStateAlways;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
if (preserveColor)
{
graphicsDevice.BlendState = GraphicsHelper.BlendStateNoColorWrite;
}
else
{
graphicsDevice.BlendState = BlendState.Opaque;
}
if (colorTexture != null)
{
if (TextureHelper.IsFloatingPointFormat(colorTexture.Format))
{
graphicsDevice.SamplerStates[1] = SamplerState.PointClamp;
}
else
{
graphicsDevice.SamplerStates[1] = SamplerState.LinearClamp;
}
}
var projection = context.CameraNode.Camera.Projection;
bool isPerspective = projection is PerspectiveProjection;
float near = projection.Near * NearBias;
float far = projection.Far * FarBias;
var biasedProjection = isPerspective
? Matrix44F.CreatePerspectiveOffCenter(
projection.Left, projection.Right,
projection.Bottom, projection.Top,
near, far)
: Matrix44F.CreateOrthographicOffCenter(
projection.Left, projection.Right,
projection.Bottom, projection.Top,
near, far);
var viewport = graphicsDevice.Viewport;
_parameterViewportSize.SetValue(new Vector2(viewport.Width, viewport.Height));
_parameterProjection.SetValue((Matrix)biasedProjection);
_parameterCameraFar.SetValue(projection.Far);
_parameterGBuffer0.SetValue(context.GBuffer0);
_parameterColor.SetValue((Vector4)color);
_parameterSourceTexture.SetValue(colorTexture);
_effect.CurrentTechnique = isPerspective ? _techniquePerspective : _techniqueOrthographic;
_effect.CurrentTechnique.Passes[(colorTexture == null) ? 0 : 1].Apply();
graphicsDevice.DrawFullScreenQuad();
graphicsDevice.ResetTextures();
savedRenderState.Restore();
}
private void ProcessJobs(RenderContext context, RenderOrder order)
{
Effect currentEffect = null;
EffectEx currentEffectEx = null;
EffectBinding currentMaterialBinding = null;
// Set render states for drawing decals.
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
if (!ClipAtNearPlane)
{
// Cache some info for near plane intersection tests.
var cameraNode = context.CameraNode;
var cameraPose = cameraNode.PoseWorld;
var projection = cameraNode.Camera.Projection;
// Get min and max of near plane AABB in view space.
var min = new Vector3(projection.Left, projection.Bottom, -projection.Near);
var max = new Vector3(projection.Right, projection.Top, -projection.Near);
// Convert min and max to world space.
min = cameraPose.ToWorldPosition(min);
max = cameraPose.ToWorldPosition(max);
// Get world space aabb
_cameraNearPlaneAabbWorld = new Aabb(Vector3.Min(min, max), Vector3.Max(min, max));
}
// The BlendState is set below.
bool isGBufferPass = string.Equals(context.RenderPass, "GBuffer", StringComparison.OrdinalIgnoreCase); // InvariantCultureIgnoreCase would be better but is not available in WindowsStore.
var blendState = isGBufferPass ? GBufferBlendState : BlendState.AlphaBlend;
int index = 0;
var jobs = _jobs.Array;
int jobCount = _jobs.Count;
while (index < jobCount)
{
// Update BlendState. (Needs to be done for each batch because decals can
// change the blend mode in the material. For example, alpha-tested decals
// can disable alpha blending.)
graphicsDevice.BlendState = blendState;
uint materialKey = jobs[index].MaterialKey;
var materialInstanceBinding = jobs[index].MaterialInstanceBinding;
var materialBinding = materialInstanceBinding.MaterialBinding;
var effectEx = materialBinding.EffectEx;
Debug.Assert(effectEx != null, "EffectEx must not be null.");
context.MaterialBinding = materialBinding;
context.MaterialInstanceBinding = materialInstanceBinding;
if (currentEffectEx != effectEx)
{
// ----- Next effect.
currentEffectEx = effectEx;
currentEffect = effectEx.Resource;
// Reset ID. (Only used during state sorting.)
ResetEffectId(effectEx);
// Update and apply global bindings.
foreach (var binding in currentEffectEx.ParameterBindings)
{
if (binding.Description.Hint == EffectParameterHint.Global)
{
binding.Update(context);
binding.Apply(context);
}
}
}
if (currentMaterialBinding != materialBinding)
{
// ----- Next material.
currentMaterialBinding = materialBinding;
// Reset ID. (Only used during state sorting.)
ResetMaterialId(materialBinding);
// Update and apply material bindings.
foreach (var binding in currentMaterialBinding.ParameterBindings)
{
binding.Update(context);
binding.Apply(context);
// In "GBuffer" pass the specular power is written to the alpha channel.
// The specular power needs to be set as the BlendFactor. (See GBufferBlendState.)
if (isGBufferPass && binding.Description.Semantic == DefaultEffectParameterSemantics.SpecularPower)
{
var specularPowerBinding = binding as EffectParameterBinding<float>;
if (specularPowerBinding != null)
{
// Note: Specular power is currently encoded using log2 - see Deferred.fxh.
// (Blending encoded values is mathematically not correct, but there are no
// rules for blending specular powers anyway.)
float specularPower = specularPowerBinding.Value;
int encodedSpecularPower = (byte)((float)Math.Log(specularPower + 0.0001f, 2) / 17.6f * 255.0f);
graphicsDevice.BlendFactor = new Color(255, 255, 255, encodedSpecularPower);
}
}
}
}
// Note: EffectTechniqueBinding only returns the EffectTechnique, but does
// not set it as the current technique.
var techniqueBinding = materialInstanceBinding.TechniqueBinding;
var technique = techniqueBinding.GetTechnique(currentEffect, context);
// See if there is an associated technique that supports hardware instancing.
//var instancingTechnique = (EffectTechnique)null;
//var techniqueDescription = currentEffectEx.TechniqueDescriptions[technique];
//if (techniqueDescription != null)
// instancingTechnique = techniqueDescription.InstancingTechnique;
//if (EnableInstancing && instancingTechnique != null)
//{
// // ----- Instancing
// // Render all decals that share the same effect/material and batch instances
// // into a single draw call.
// int count = 1;
// while (index + count < jobCount && jobs[index + count].MaterialKey == materialKey)
// count++;
// if (count >= InstancingThreshold)
// {
// // Draw decals using instancing.
// currentEffect.CurrentTechnique = instancingTechnique;
// var passBinding = techniqueBinding.GetPassBinding(instancingTechnique, context);
// DrawInstanced(ref passBinding, context, index, count);
// index += count;
// }
// else
// {
// // Draw decals without instancing.
// currentEffect.CurrentTechnique = technique;
// var passBinding = techniqueBinding.GetPassBinding(technique, context);
// Draw(ref passBinding, context, index, count, order);
// index += count;
// }
//}
//else
{
// ----- No instancing
// Render all decals that share the same effect/material.
int count = 1;
while (index + count < jobCount && jobs[index + count].MaterialKey == materialKey)
count++;
currentEffect.CurrentTechnique = technique;
var passBinding = techniqueBinding.GetPassBinding(technique, context);
Draw(ref passBinding, context, index, count, order);
index += count;
}
}
context.MaterialBinding = null;
context.MaterialInstanceBinding = null;
savedRenderState.Restore();
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
context.Validate(_effect);
context.ThrowIfCameraMissing();
context.ThrowIfGBuffer0Missing();
// Fog is not used in all games. --> Early out, if possible.
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
{
return;
}
if (nodes.Count > 1)
{
// Get a sorted list of all fog nodes.
if (_fogNodes == null)
{
_fogNodes = new List <SceneNode>();
}
_fogNodes.Clear();
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as FogNode;
if (node != null)
{
_fogNodes.Add(node);
node.SortTag = node.Priority;
}
}
// Sort ascending. (Fog with lower priority is rendered first.)
// Note: Since this list is a list of SceneNodes, we use the AscendingNodeComparer
// instead of the AscendingFogNodeComparer. The Priority was written to the SortTag,
// so this will work.
_fogNodes.Sort(AscendingNodeComparer.Instance);
nodes = _fogNodes;
numberOfNodes = _fogNodes.Count;
}
var graphicsDevice = _effect.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.BlendState = BlendState.AlphaBlend;
var viewport = graphicsDevice.Viewport;
_parameterViewportSize.SetValue(new Vector2(viewport.Width, viewport.Height));
var cameraNode = context.CameraNode;
var cameraPose = cameraNode.PoseWorld;
GraphicsHelper.GetFrustumFarCorners(cameraNode.Camera.Projection, _cameraFrustumFarCorners);
// Convert frustum far corners from view space to world space.
for (int i = 0; i < _cameraFrustumFarCorners.Length; i++)
{
_cameraFrustumFarCorners[i] = (Vector3)cameraPose.ToWorldDirection((Vector3F)_cameraFrustumFarCorners[i]);
}
_parameterFrustumCorners.SetValue(_cameraFrustumFarCorners);
_parameterGBuffer0.SetValue(context.GBuffer0);
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
bool directionalLightIsSet = false;
float scatteringSymmetryStrength = 1;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as FogNode;
if (node == null)
{
continue;
}
// FogNode is visible in current frame.
node.LastFrame = frame;
var fog = node.Fog;
if (fog.Density <= Numeric.EpsilonF)
{
continue;
}
// Compute actual density and falloff.
float fogDensity = fog.Density;
float heightFalloff = fog.HeightFalloff;
// In previous versions, we gave FogDensity * 2^(-h*y) to the effect. Following code
// avoids numerical problems where this value is numerically 0. This is now handled
// in the shader.
//if (!Numeric.IsZero(heightFalloff))
//{
// float cameraDensity = (float)Math.Pow(2, -heightFalloff * cameraPose.Position.Y);
// // Trick: If the heightFalloff is very large, the e^x function can quickly reach
// // the float limit! If this happens, the shader will not compute any fog and this
// // looks like the fog disappears. To avoid this problem we reduce the heightFalloff
// // to keep the result of e^x always within floating point range.
// const float Limit = 1e-37f;
// if (cameraDensity < Limit)
// {
// heightFalloff = (float)Math.Log(Limit) / -cameraPose.Position.Y / ConstantsF.Ln2;
// cameraDensity = Limit;
// }
// // Compute actual fog density.
// // fogDensity is at world space height 0. If the fog node is on another height,
// // we change the fogDensity.
// fogDensity *= (float)Math.Pow(2, -heightFalloff * (-node.PoseWorld.Position.Y));
// // Combine camera and fog density.
// fogDensity *= cameraDensity;
//}
_parameterFogParameters.SetValue(new Vector4(fog.Start, fog.End, fogDensity, heightFalloff));
_parameterColor0.SetValue((Vector4)fog.Color0);
_parameterColor1.SetValue((Vector4)fog.Color1);
// Compute world space reference heights.
var fogBaseHeight = node.PoseWorld.Position.Y;
var height0 = fogBaseHeight + fog.Height0;
var height1 = fogBaseHeight + fog.Height1;
// Avoid division by zero in the shader.
if (Numeric.AreEqual(height0, height1))
{
height1 = height0 + 0.0001f;
}
_parameterHeights.SetValue(new Vector4(
cameraNode.PoseWorld.Position.Y,
fogBaseHeight,
height0,
height1));
var scatteringSymmetry = fog.ScatteringSymmetry;
bool useScatteringSymmetry = !scatteringSymmetry.IsNumericallyZero;
if (useScatteringSymmetry)
{
if (!directionalLightIsSet)
{
scatteringSymmetryStrength = SetDirectionalLightParameter(context, cameraNode);
directionalLightIsSet = true;
}
}
if (!useScatteringSymmetry || Numeric.IsZero(scatteringSymmetryStrength))
{
// No phase function.
if (Numeric.IsZero(heightFalloff))
{
_passFog.Apply();
}
else
{
_passFogWithHeightFalloff.Apply();
}
}
else
{
// Use phase function.
// Set parameters for phase function.
_parameterScatteringSymmetry.SetValue((Vector3)scatteringSymmetry * scatteringSymmetryStrength);
if (Numeric.IsZero(heightFalloff))
{
_passFogWithPhase.Apply();
}
else
{
_passFogWithHeightFalloffWithPhase.Apply();
}
}
graphicsDevice.DrawFullScreenQuad();
}
if (_fogNodes != null)
{
_fogNodes.Clear();
}
savedRenderState.Restore();
}
