private void RenderOverlays()
{
PIXHelper.BeginEvent("Render overlays");
foreach (Renderable renderable in overlays)
{
Debug.Assert(renderable.RenderMode == RenderMode.RenderOverlays);
renderable.Draw(this);
}
PIXHelper.EndEvent();
}
private void RenderParticles()
{
//transparentRenderables.Sort(TransparentRenderableComparison);
PIXHelper.BeginEvent("Render particles");
foreach (Renderable renderable in transparentRenderables)
{
Debug.Assert(renderable.RenderMode == RenderMode.RenderToSceneAlpha);
renderable.Draw(this);
}
PIXHelper.BeginEvent("Render lava fires");
if (explosionSystem != null)
{
explosionSystem.Render(lastFrameTime, currentFrameTime);
}
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Render Snow");
if (snowSystem != null)
{
snowSystem.Render(lastFrameTime, currentFrameTime);
}
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Render ice explosion");
if (iceExplosionSystem != null)
{
iceExplosionSystem.Render(Time.PausableLast / 1000d, Time.PausableAt / 1000d);
}
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Render robot explosion");
if (fireExplosionSystem != null)
{
fireExplosionSystem.Render(Time.PausableLast / 1000d, Time.PausableAt / 1000d);
}
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Render flamethrower");
if (flamethrowerSystem != null)
{
flamethrowerSystem.Render(Time.PausableLast / 1000d, Time.PausableAt / 1000d);
}
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Render ice spike");
if (iceSpikeSystem != null)
{
iceSpikeSystem.Render(Time.PausableLast / 1000d, Time.PausableAt / 1000d);
}
PIXHelper.EndEvent();
PIXHelper.EndEvent();
}
/// <summary>
/// If regular foward rendering is being used for transparents, this method is called
/// and renders the transparents
/// </summary>
private void DrawTransparents()
{
PIXHelper.BeginEvent("Draw Transparents Pass");
List <Vector3> lightPositions = new List <Vector3>();
List <float> lightRanges = new List <float>();
List <Vector3> lightColors = new List <Vector3>();
foreach (Light light in lights)
{
if (light is PointLight)
{
PointLight pointLight = (PointLight)light;
lightPositions.Add(Vector3.Transform(pointLight.Position, camera.ViewMatrix));
lightRanges.Add(pointLight.Range);
lightColors.Add(pointLight.Color);
}
else if (light is DirectionalLight)
{
DirectionalLight directionalLight = (DirectionalLight)light;
Vector3 lightDirVS = Vector3.TransformNormal(directionalLight.Direction, camera.ViewMatrix);
transparentEffect.Parameters["LightDirVS"].SetValue(Vector3.Normalize(lightDirVS));
transparentEffect.Parameters["LightColor"].SetValue(light.Color);
}
}
transparentEffect.Parameters["LightPositionsVS"].SetValue(lightPositions.ToArray());
transparentEffect.Parameters["LightRanges"].SetValue(lightRanges.ToArray());
transparentEffect.Parameters["LightColors"].SetValue(lightColors.ToArray());
transparentEffect.Parameters["AmbientColor"].SetValue(AmbientLight);
transparentEffect.Parameters["EnablePointLights"].SetValue(enablePointLights);
transparentEffect.Parameters["ViewToLight"].SetValue(camera.WorldMatrix * lightCam.ViewProjectionMatrix);
transparentEffect.Parameters["ShadowMapTexture"].SetValue(shadowMap.GetTexture());
transparentEffect.Parameters["ShadowMapDimensions"].SetValue(new Vector2((int)shadowMapSize));
if (enableNormalMaps)
{
transparentEffect.CurrentTechnique = transparentEffect.Techniques["TransparentNM"];
}
else
{
transparentEffect.CurrentTechnique = transparentEffect.Techniques["Transparent"];
}
foreach (ModelInstance instance in sortedTransparents)
{
instance.Draw(GraphicsDevice, transparentEffect, camera);
}
PIXHelper.EndEvent();
}
/// <summary>
/// Draws all opaque instances to the shadow map
/// </summary>
private void DrawShadowMap()
{
PIXHelper.BeginEvent("Draw ShadowMap");
GraphicsDevice.SetRenderTarget(0, shadowMap);
GraphicsDevice.DepthStencilBuffer = shadowMapDS;
GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer | ClearOptions.Stencil, Vector4.One, 1.0f, 0);
foreach (ModelInstance instance in opaques)
{
instance.Draw(GraphicsDevice, shadowMapEffect, lightCam);
}
PIXHelper.EndEvent();
}
private void DrawScreen()
{
PIXHelper.BeginEvent("Drawing Results to Screen");
GraphicsDevice.SetRenderTarget(0, null);
GraphicsDevice.DepthStencilBuffer = nonMSAADS;
GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer | ClearOptions.Stencil, Vector4.Zero, 1.0f, 0);
spriteBatch.Begin(SpriteBlendMode.None, SpriteSortMode.Immediate, SaveStateMode.None);
spriteEffect.Begin(SaveStateMode.None);
spriteEffect.CurrentTechnique.Passes[0].Begin();
spriteBatch.Draw(colorBuffer.GetTexture(), Vector2.Zero, Color.White);
spriteBatch.End();
spriteEffect.CurrentTechnique.Passes[0].End();
spriteEffect.End();
}
private void RenderScene()
{
PIXHelper.BeginEvent("Render Scene");
if (EnablePostProcessing)
{
Device.SetRenderTargets(targetOpaqueColorBuffer, targetOpaqueRenderChannels, targetOpaqueDepth);
}
// clear the render targets
Device.Clear(Color.White);
// make sure to disable blending. XNA does not like alpha blending on floating point surfaces. And
// it looks like it does not set them correctly when specified in .fx files. just disable it to make sure
// that everything works as it should!
Device.BlendState = BlendState.Opaque;
foreach (Renderable renderable in opaqueRenderables)
{
Debug.Assert(renderable.RenderMode == RenderMode.RenderToScene);
renderable.Draw(this);
}
if (EnablePostProcessing)
{
Device.SetRenderTargets(null);
}
//Texture2D texture = TargetDepth.GetTexture();
//float[] pixelData = new float[texture.Width * texture.Height];
//texture.GetData(pixelData, 0, texture.Width * texture.Height);
//Console.WriteLine("start");
//for (int i = 0; i < texture.Width * texture.Height; i++)
// if (pixelData[i] != 0.0f)
// {
// float g = pixelData[i];
// Console.WriteLine(g);
// }
//Console.WriteLine("end");
//int a = 0;
PIXHelper.EndEvent();
}
public void Render(
Texture2D hdrColorBuffer, Texture2D renderChannelBuffer,
RenderTarget2D targetIntermediateBlurredHDRColorBuffer, RenderTarget2D targetIntermediateBlurredRenderChannelBuffer,
RenderTarget2D targetBlurredHDRColorBuffer, RenderTarget2D targetBlurredRenderChannelBuffer
)
{
// pass 1 horizontal blur
PIXHelper.BeginEvent("Horizontal Blur");
SetBlurEffectParameters(
1.0f / hdrColorBuffer.Width,
0,
hdrColorBuffer,
renderChannelBuffer
);
DrawFullscreenQuad(
hdrColorBuffer,
targetIntermediateBlurredHDRColorBuffer, targetIntermediateBlurredRenderChannelBuffer,
gaussianBlurEffect
);
PIXHelper.EndEvent();
// result
Texture2D intermediateBlurredHDRColorBuffer = targetIntermediateBlurredHDRColorBuffer;
Texture2D intermediateBlurredRenderChannelBuffer = targetIntermediateBlurredRenderChannelBuffer;
// pass 2 vertical blurr
PIXHelper.BeginEvent("Vertical Blur");
SetBlurEffectParameters(
0,
1.0f / hdrColorBuffer.Height,
intermediateBlurredHDRColorBuffer,
intermediateBlurredRenderChannelBuffer
);
DrawFullscreenQuad(
intermediateBlurredHDRColorBuffer,
targetBlurredHDRColorBuffer, targetBlurredRenderChannelBuffer,
gaussianBlurEffect
);
PIXHelper.EndEvent();
}
private void UpdateParticles(
double currentFrameTime,
int nextTexture
)
{
PIXHelper.BeginEvent("Update particles");
particleUpdateEffect.Parameters["View"].SetValue(renderer.Camera.View);
particleUpdateEffect.Parameters["Projection"].SetValue(renderer.Camera.Projection);
particleUpdateEffect.Parameters["StartSize"].SetValue(new Vector2(5.0f, 10.0f));
particleUpdateEffect.Parameters["EndSize"].SetValue(new Vector2(50.0f, 200.0f));
particleUpdateEffect.Parameters["MinColor"].SetValue(Vector4.One);
particleUpdateEffect.Parameters["MaxColor"].SetValue(Vector4.One);
particleUpdateEffect.Parameters["ViewportHeight"].SetValue(device.Viewport.Height);
particleUpdateEffect.Parameters["ViewportWidth"].SetValue(device.Viewport.Width);
particleUpdateEffect.Parameters["Time"].SetValue((float)currentFrameTime);
particleUpdateEffect.Parameters["Dt"].SetValue((float)SimulationStep);
particleUpdateEffect.Parameters["PositionTexture"].SetValue(positionTextures[activeTexture]);
particleUpdateEffect.Parameters["VelocityTexture"].SetValue(velocityTextures[activeTexture]);
particleUpdateEffect.Parameters["RandomTexture"].SetValue(renderer.VectorCloudTexture);
particleUpdateEffect.Parameters["SpriteTexture"].SetValue(spriteTexture);
if (particleUpdateEffect.Parameters["ViewportSize"] != null)
{
particleUpdateEffect.Parameters["ViewportSize"].SetValue(new Vector2(positionTextures[nextTexture].Width, positionTextures[nextTexture].Height));
}
SetUpdateParameters(particleUpdateEffect.Parameters);
Texture2D positionTexture = positionTextures[activeTexture];
// TODO: fix rendering code!
spriteBatch.Begin(SpriteSortMode.Immediate, BlendState.Opaque, SamplerState.PointClamp, null, null, particleUpdateEffect);
spriteBatch.Draw(positionTexture, new Rectangle(0, 0, positionTexture.Width, positionTexture.Height), Color.White);
spriteBatch.End();
PIXHelper.EndEvent();
}
public void Render()
{
PIXHelper.BeginEvent("Render Frame");
renderTime.Update();
//Console.WriteLine("rendering {0}", renderTime.PausableAt);
Game.Instance.Profiler.BeginSection("beginning_stuff");
Update();
LightManager.Update(this);
device.Clear(Color.White);
// 1) Set the light's render target
device.SetRenderTargets(lightRenderTarget);
Game.Instance.Profiler.EndSection("beginning_stuff");
Game.Instance.Profiler.BeginSection("rendering");
// 2) Render the scene from the perspective of the light
Game.Instance.Profiler.BeginSection("renderer_shadow");
RenderShadow();
Game.Instance.Profiler.EndSection("renderer_shadow");
// 3) Set our render target back to the screen, and get the
//depth texture created by step 2
Game.Instance.Profiler.BeginSection("change_render_target");
device.SetRenderTargets(null);
lightResolve = lightRenderTarget;
Game.Instance.Profiler.EndSection("change_render_target");
// 4) Render the scene from the view of the camera,
//and do depth comparisons in the shader to determine shadowing
Game.Instance.Profiler.BeginSection("renderer_scene");
RenderScene();
Game.Instance.Profiler.EndSection("renderer_scene");
// TODO: alpha blended objects...
bool hasAlphaObjects = false;// transparentRenderablesTEST.Count > 0;
Game.Instance.Profiler.BeginSection("render_scene_alpha");
if (hasAlphaObjects)
{
RenderSceneAlpha();
}
Game.Instance.Profiler.EndSection("render_scene_alpha");
if (EnablePostProcessing)
{
Game.Instance.Profiler.BeginSection("postprocessing");
PIXHelper.BeginEvent("PostProcessing");
// downscaling is done as part of the blur during the glow-pass
if (hasAlphaObjects)
{
Game.Instance.Profiler.BeginSection("combine");
combinePass.Render(targetOpaqueColorBuffer, targetAlphaColorBuffer, targetHDRColorBuffer);
combinePass.Render(targetOpaqueRenderChannels, targetAlphaRenderChannels, targetRenderChannels);
combineDepthPass.Render(targetOpaqueDepth, targetAlphaDepth, targetDepth);
Game.Instance.Profiler.EndSection("combine");
Game.Instance.Profiler.BeginSection("renderer_post_glow");
glowPass.Render(
targetHDRColorBuffer, targetRenderChannels,
targetHorizontalBlurredHDRColorBuffer, targetHorizontalBlurredRenderChannels,
targetBlurredHDRColorBuffer, targetBlurredRenderChannels
);
Game.Instance.Profiler.EndSection("renderer_post_glow");
// FIXME: do we really need to downscale and blur the renderchannels? we don't use
// the blurred version.
Game.Instance.Profiler.BeginSection("renderer_post_hdr");
hdrCombinePass.Render(
targetHDRColorBuffer, targetBlurredHDRColorBuffer, targetRenderChannels,
targetDepth
);
Game.Instance.Profiler.EndSection("renderer_post_hdr");
}
else
{
Game.Instance.Profiler.BeginSection("renderer_post_glow");
PIXHelper.BeginEvent("Glow Pass");
glowPass.Render(
targetOpaqueColorBuffer, targetOpaqueRenderChannels,
targetHorizontalBlurredHDRColorBuffer, targetHorizontalBlurredRenderChannels,
targetBlurredHDRColorBuffer, targetBlurredRenderChannels
);
PIXHelper.EndEvent();
Game.Instance.Profiler.EndSection("renderer_post_glow");
// FIXME: do we really need to downscale and blur the renderchannels? we don't use
// the blurred version.
Game.Instance.Profiler.BeginSection("renderer_post_hdr");
PIXHelper.BeginEvent("HDR Combine Pass");
hdrCombinePass.Render(
targetOpaqueColorBuffer, targetBlurredHDRColorBuffer, targetOpaqueRenderChannels,
targetOpaqueDepth
);
PIXHelper.EndEvent();
Game.Instance.Profiler.EndSection("renderer_post_hdr");
}
PIXHelper.EndEvent();
Game.Instance.Profiler.EndSection("postprocessing");
}
RenderParticles();
RenderSceneAfterPost();
Game.Instance.Profiler.EndSection("rendering");
// 6) Render overlays
Game.Instance.Profiler.BeginSection("overlay");
RenderOverlays();
Game.Instance.Profiler.EndSection("overlay");
PIXHelper.EndEvent();
}
private void Update()
{
if (Camera != null)
{
// should only be called if a level has already been loaded
Camera.Update(this);
Camera.RecomputeFrame(ref opaqueRenderables);
}
RendererUpdateQueue q = GetNextUpdateQueue();
while (q != null)
{
for (int i = 0; i < q.Count; ++i)
{
q[i].Apply(q.Timestamp);
}
q = GetNextUpdateQueue();
}
foreach (Renderable renderable in updateRenderables)
{
renderable.Update(this);
}
Game.Instance.Profiler.BeginSection("particle_systems");
PIXHelper.BeginEvent("Update Particles");
PIXHelper.BeginEvent("Update lava flames");
Game.Instance.Profiler.BeginSection("explosion_system");
if (explosionSystem != null)
{
explosionSystem.Update(Time.Last / 1000d, Time.At / 1000d);
}
Game.Instance.Profiler.EndSection("explosion_system");
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Update snow");
Game.Instance.Profiler.BeginSection("snow_system");
if (snowSystem != null)
{
snowSystem.Update(Time.Last / 1000d, Time.At / 1000d);
}
Game.Instance.Profiler.EndSection("snow_system");
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Update ice explosions");
Game.Instance.Profiler.BeginSection("ice_explosion_system");
if (iceExplosionSystem != null)
{
iceExplosionSystem.Update(Time.PausableLast / 1000d, Time.PausableAt / 1000d);
}
Game.Instance.Profiler.EndSection("ice_explosion_system");
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Update fire explosions");
Game.Instance.Profiler.BeginSection("fire_explosion_system");
if (fireExplosionSystem != null)
{
fireExplosionSystem.Update(Time.PausableLast / 1000d, Time.PausableAt / 1000d);
}
Game.Instance.Profiler.EndSection("fire_explosion_system");
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Update flamethrowers");
Game.Instance.Profiler.BeginSection("flamethrower_system");
if (flamethrowerSystem != null)
{
flamethrowerSystem.Update(Time.PausableLast / 1000d, Time.PausableAt / 1000d);
}
Game.Instance.Profiler.EndSection("flamethrower_system");
PIXHelper.EndEvent();
PIXHelper.BeginEvent("Update ice spikes");
Game.Instance.Profiler.BeginSection("ice_spike_system");
if (iceSpikeSystem != null)
{
iceSpikeSystem.Update(Time.PausableLast / 1000d, Time.PausableAt / 1000d);
}
Game.Instance.Profiler.EndSection("ice_spike_system");
PIXHelper.EndEvent();
PIXHelper.EndEvent();
Game.Instance.Profiler.EndSection("particle_systems");
}
/// <summary>
/// Renders the composite pass, where instances a re-rendered and sample the
/// L-Buffer to determine the lighting value that should be applied.
/// </summary>
private void DrawCompositePass()
{
PIXHelper.BeginEvent("Draw Composite Pass");
GraphicsDevice.SetRenderTarget(0, colorBuffer);
GraphicsDevice.DepthStencilBuffer = msaaDS;
GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer | ClearOptions.Stencil,
Color.Black, 1.0f, 0);
compositeEffect.Parameters["GBufferDimensions"].SetValue(gBufferDimensions);
compositeEffect.Parameters["RTDimensions"].SetValue(new Vector2(ScreenWidth, ScreenHeight));
compositeEffect.Parameters["AmbientColor"].SetValue(AmbientLight);
compositeEffect.Parameters["LightTexture"].SetValue(lightBuffer.GetTexture());
compositeEffect.Parameters["DepthIDTexture"].SetValue(depthIDBuffer.GetTexture());
compositeEffect.Parameters["Alpha"].SetValue(1.0f);
PIXHelper.BeginEvent("Opaques");
// Draw the opaques
if (gBufferSize == GBufferSize.FullSize && transparencyMode == TransparencyMode.ForwardRendered)
{
compositeEffect.CurrentTechnique = compositeEffect.Techniques["CompositeOpaque"];
}
else
{
compositeEffect.CurrentTechnique = compositeEffect.Techniques["CompositeOpaqueFiltered"];
}
int instanceID = 1;
foreach (ModelInstance instance in opaques)
{
compositeEffect.Parameters["InstanceID"].SetValue(instanceID);
instance.Draw(GraphicsDevice, compositeEffect, camera);
++instanceID;
}
PIXHelper.EndEvent();
if (transparencyMode == TransparencyMode.ForwardRendered)
{
PIXHelper.EndEvent();
return;
}
PIXHelper.BeginEvent("Transparents");
compositeEffect.CurrentTechnique = compositeEffect.Techniques["CompositeTransparent"];
compositeEffect.Parameters["Alpha"].SetValue(0.5f);
foreach (ModelInstance instance in sortedTransparents)
{
compositeEffect.Parameters["InstanceID"].SetValue(instanceID);
compositeEffect.Parameters["XFilterOffsets"].SetValue(XFilterOffsets[instanceID % NumMasks]);
compositeEffect.Parameters["YFilterOffsets"].SetValue(YFilterOffsets[instanceID % NumMasks]);
instance.Draw(GraphicsDevice, compositeEffect, camera);
++instanceID;
}
PIXHelper.EndEvent();
PIXHelper.EndEvent();
}
/// <summary>
/// Renders the lighting pass by rendering all lights to the L-Buffer
/// </summary>
private void DrawLights()
{
PIXHelper.BeginEvent("Draw Lights");
GraphicsDevice.SetRenderTarget(0, lightBuffer);
GraphicsDevice.SetRenderTarget(1, null);
GraphicsDevice.Clear(ClearOptions.Target, Vector4.Zero, 1.0f, 0);
lightEffect.Parameters["FarClip"].SetValue(camera.FarClip);
lightEffect.Parameters["GBufferDimensions"].SetValue(gBufferDimensions);
lightEffect.Parameters["DepthIDTexture"].SetValue(depthIDBuffer.GetTexture());
lightEffect.Parameters["NormalSpecTexture"].SetValue(normalSpecularBuffer.GetTexture());
foreach (Light light in lights)
{
lightEffect.Parameters["LightColor"].SetValue(light.Color);
if (light is PointLight && enablePointLights)
{
PointLight pointLight = (PointLight)light;
Matrix worldMatrix = Matrix.CreateScale(pointLight.Range) * Matrix.CreateTranslation(pointLight.Position);
lightEffect.Parameters["WorldView"].SetValue(worldMatrix * camera.ViewMatrix);
lightEffect.Parameters["WorldViewProjection"].SetValue(worldMatrix * camera.ViewProjectionMatrix);
lightEffect.Parameters["LightRange"].SetValue(pointLight.Range);
lightEffect.Parameters["LightPosVS"].SetValue(Vector3.Transform(pointLight.Position, camera.ViewMatrix));
// For our light volume we'll want to render front faces if the volume intersects
// our far clipping plane, or back faces otherwise.
float lightDepth = -Vector3.Transform(pointLight.Position, camera.ViewMatrix).Z;
if (lightDepth > camera.FarClip - pointLight.Range)
{
lightEffect.CurrentTechnique = lightEffect.Techniques["PointLightFront"];
}
else
{
lightEffect.CurrentTechnique = lightEffect.Techniques["PointLightBack"];
}
lightEffect.Begin(SaveStateMode.None);
lightEffect.CurrentTechnique.Passes[0].Begin();
ModelMesh mesh = lightSphere.Meshes[0];
ModelMeshPart meshPart = mesh.MeshParts[0];
GraphicsDevice.Indices = mesh.IndexBuffer;
GraphicsDevice.VertexDeclaration = meshPart.VertexDeclaration;
GraphicsDevice.Vertices[0].SetSource(mesh.VertexBuffer, meshPart.StreamOffset, meshPart.VertexStride);
GraphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList,
meshPart.BaseVertex,
0,
meshPart.NumVertices,
meshPart.StartIndex,
meshPart.PrimitiveCount);
lightEffect.CurrentTechnique.Passes[0].End();
lightEffect.End();
}
else if (light is DirectionalLight)
{
DirectionalLight directionalLight = (DirectionalLight)light;
// Do shadow mapping first
DrawShadowMap();
// Now draw the directional light
GraphicsDevice.SetRenderTarget(0, lightBuffer);
GraphicsDevice.DepthStencilBuffer = nonMSAADS;
lightEffect.Parameters["ShadowMapTexture"].SetValue(shadowMap.GetTexture());
lightEffect.Parameters["ViewToLight"].SetValue(camera.WorldMatrix * lightCam.ViewProjectionMatrix);
lightEffect.Parameters["ShadowMapDimensions"].SetValue(new Vector2((int)shadowMapSize));
Vector3 lightDirVS = Vector3.TransformNormal(directionalLight.Direction, camera.ViewMatrix);
lightEffect.Parameters["LightDirVS"].SetValue(Vector3.Normalize(lightDirVS));
// Get the frustum corners for position reconstruction
Vector3[] cornersWS = camera.BoundingFrustum.GetCorners();
Vector3[] cornersVS = new Vector3[4];
for (int i = 0; i < 4; ++i)
{
cornersVS[i] = Vector3.Transform(cornersWS[i + 4], camera.ViewMatrix);
}
lightEffect.Parameters["FrustumCornersVS"].SetValue(cornersVS);
lightEffect.CurrentTechnique = lightEffect.Techniques["DirectionalLight"];
lightEffect.Begin(SaveStateMode.None);
lightEffect.CurrentTechnique.Passes[0].Begin();
quad.Draw(GraphicsDevice);
lightEffect.CurrentTechnique.Passes[0].End();
lightEffect.End();
}
}
PIXHelper.EndEvent();
}
/// <summary>
/// Draws all opaque instances to the G-Buffer, as well as transparents (if deferred mode
/// is being used to render the transparents)
/// </summary>
private void DrawGBuffer()
{
PIXHelper.BeginEvent("Draw G-Buffer");
GraphicsDevice.SetRenderTarget(0, depthIDBuffer);
GraphicsDevice.SetRenderTarget(1, normalSpecularBuffer);
GraphicsDevice.DepthStencilBuffer = nonMSAADS;
GraphicsDevice.Clear(ClearOptions.DepthBuffer | ClearOptions.Stencil | ClearOptions.Target, Vector4.Zero, 1.0f, 0);
PIXHelper.BeginEvent("Opaques");
if (enableNormalMaps)
{
gBufferEffect.CurrentTechnique = gBufferEffect.Techniques["GBufferNM"];
}
else
{
gBufferEffect.CurrentTechnique = gBufferEffect.Techniques["GBuffer"];
}
// We'll make sure each instance has a unique ID by incrementing a variable
// every time we render one. 0 is reserved for no instances, so we start
// at one.
int instanceID = 1;
foreach (ModelInstance instance in opaques)
{
gBufferEffect.Parameters["InstanceID"].SetValue(instanceID);
instance.Draw(GraphicsDevice, gBufferEffect, camera);
++instanceID;
}
PIXHelper.EndEvent();
if (transparencyMode == TransparencyMode.ForwardRendered)
{
PIXHelper.EndEvent();
return;
}
PIXHelper.BeginEvent("Transparents");
if (enableNormalMaps)
{
gBufferEffect.CurrentTechnique = gBufferEffect.Techniques["GBufferMaskNM"];
}
else
{
gBufferEffect.CurrentTechnique = gBufferEffect.Techniques["GBufferMask"];
}
foreach (ModelInstance instance in sortedTransparents)
{
// For each instance, rotate through our 3 output masks
gBufferEffect.Parameters["OutputMask"].SetValue(OutputMasks[instanceID % NumMasks]);
gBufferEffect.Parameters["InstanceID"].SetValue(instanceID);
instance.Draw(GraphicsDevice, gBufferEffect, camera);
++instanceID;
}
PIXHelper.EndEvent();
PIXHelper.EndEvent();
}
private void CreateParticles(
double lastFrameTime,
double currentFrameTime,
double dt
)
{
Game.Instance.Profiler.BeginSection("create_particles");
PIXHelper.BeginEvent("Create particles");
Game.Instance.Profiler.BeginSection("count");
Vector2 positionHalfPixel = new Vector2(1.0f / (2.0f * positionTextures[0].Width), 1.0f / (2.0f * positionTextures[0].Height));
Vector2 positionPixel = new Vector2(1.0f / (positionTextures[0].Width), 1.0f / (positionTextures[0].Height));
int[] particleCount = new int[emitters.Count];
int sumParticleCount = 0;
for (int emitterIndex = 0; emitterIndex < emitters.Count; ++emitterIndex)
{
ParticleEmitter emitter = emitters[emitterIndex];
particleCount[emitterIndex] = emitter.CalculateParticleCount(lastFrameTime, currentFrameTime);
sumParticleCount += particleCount[emitterIndex];
}
Game.Instance.Profiler.EndSection("count");
// nothing to do if there are no new particles!
if (sumParticleCount == 0)
{
PIXHelper.EndEvent();
Game.Instance.Profiler.EndSection("create_particles");
return;
}
Game.Instance.Profiler.BeginSection("allocate");
CreateVertexArray vertices = renderer.StatefulParticleResourceManager.AllocateCreateVertexArray(sumParticleCount * 3);
Game.Instance.Profiler.EndSection("allocate");
Game.Instance.Profiler.BeginSection("create");
int maxindex = positionTextures[0].Width * positionTextures[0].Height;
for (int i = 0; i < sumParticleCount; ++i)
{
if (nextParticleIndex >= maxindex)
{
nextParticleIndex = 0;
}
int textureSize = textureSizes[(int)GetSystemSize()];
int x = nextParticleIndex % textureSize;
int y = nextParticleIndex / textureSize;
Debug.Assert(textureSize == positionTextures[0].Width);
Debug.Assert(textureSize == positionTextures[0].Height);
Vector2[] offsets =
{
new Vector2(-1, -1),
new Vector2(1, -1),
new Vector2(0, 1)
};
for (int j = 0; j < 3; ++j)
{
vertices.Array[i * 3 + j] = new CreateVertex(
Vector3.Zero,
Vector3.Zero,
new Vector2(
-1.0f + positionPixel.X + 2.0f * x * positionPixel.X + 2 * offsets[j].X * positionPixel.X,
-1.0f + positionPixel.Y + 2.0f * y * positionPixel.Y + 2 * offsets[j].Y * positionPixel.Y
),
new Short2(
x,
y
),
0 // emitterIndex
);
}
++nextParticleIndex;
}
Game.Instance.Profiler.EndSection("create");
Game.Instance.Profiler.BeginSection("emit");
int vertexIndex = 0;
for (int emitterIndex = 0; emitterIndex < emitters.Count; ++emitterIndex)
{
ParticleEmitter emitter = emitters[emitterIndex];
emitter.CreateParticles(lastFrameTime, currentFrameTime, vertices.Array, vertexIndex, particleCount[emitterIndex]);
vertexIndex += particleCount[emitterIndex];
}
Game.Instance.Profiler.EndSection("emit");
Game.Instance.Profiler.BeginSection("render");
int localCreateVerticesIndex = 0;
int verticesCopied = 0;
while (verticesCopied < vertices.OccupiedSize)
{
int passVerticesCount = vertices.OccupiedSize - verticesCopied;
int passVerticesAvailable = createVertexBufferSize - localCreateVerticesIndex;
if (passVerticesCount > passVerticesAvailable)
{
passVerticesCount = passVerticesAvailable;
}
for (int j = 0; j < passVerticesCount; ++j)
{
localCreateVertices[localCreateVerticesIndex + j] = vertices.Array[verticesCopied + j];
}
verticesCopied += passVerticesCount;
localCreateVerticesIndex += passVerticesCount;
if (localCreateVerticesIndex >= createVertexBufferSize - createVertexBufferIndex)
{
FlushCreateParticles(verticesCopied, currentFrameTime, dt);
localCreateVerticesIndex = 0;
createVertexBufferIndex = 0;
}
}
renderer.StatefulParticleResourceManager.FreeCreateVertexArray(vertices);
if (localCreateVerticesIndex > 0)
{
FlushCreateParticles(localCreateVerticesIndex, currentFrameTime, dt);
}
Game.Instance.Profiler.EndSection("render");
PIXHelper.EndEvent();
Game.Instance.Profiler.EndSection("create_particles");
}
