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();
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
var content = _services.GetInstance<ContentManager>();
_skyboxNode = new SkyboxNode(content.Load<TextureCube>("Sky2"))
{
Color = new Vector3F(SkyExposure),
};
// The ambient light.
var ambientLight = new AmbientLight
{
Color = new Vector3F(0.9f, 0.9f, 1f),
HdrScale = 0.1f,
Intensity = 0.5f,
HemisphericAttenuation = 0.8f,
};
_ambientLightNode = new LightNode(ambientLight)
{
Name = "Ambient",
};
// The main directional light.
var sunlight = new DirectionalLight
{
Color = new Vector3F(1, 0.9607844f, 0.9078432f),
HdrScale = 0.4f,
DiffuseIntensity = 1,
SpecularIntensity = 1,
};
_sunlightNode = new LightNode(sunlight)
{
Name = "Sunlight",
Priority = 10, // This is the most important light.
PoseWorld = new Pose(QuaternionF.CreateRotationY(-1.4f) * QuaternionF.CreateRotationX(-0.6f)),
// This light uses Cascaded Shadow Mapping.
Shadow = new CascadedShadow
{
#if XBOX
PreferredSize = 512,
#else
PreferredSize = 1024,
#endif
Prefer16Bit = true,
}
};
// Add a lens flare for the key light.
var lensFlare = new LensFlare(true) { QuerySize = 0.2f, Size = 0.2f, Name = "Sun Flare" };
var lensFlareTexture = content.Load<Texture2D>("LensFlare/LensFlares");
var circleTexture = new PackedTexture("Circle", lensFlareTexture, new Vector2F(0, 0), new Vector2F(0.25f, 0.5f));
var glowTexture = new PackedTexture("Glow", lensFlareTexture, new Vector2F(0.25f, 0), new Vector2F(0.25f, 0.5f));
var ringTexture = new PackedTexture("Ring", lensFlareTexture, new Vector2F(0.5f, 0), new Vector2F(0.25f, 0.5f));
var haloTexture = new PackedTexture("Halo", lensFlareTexture, new Vector2F(0.75f, 0), new Vector2F(0.25f, 0.5f));
var sunTexture = new PackedTexture("Sun", lensFlareTexture, new Vector2F(0, 0.5f), new Vector2F(0.25f, 0.5f));
var streaksTexture = new PackedTexture("Streaks", lensFlareTexture, new Vector2F(0.25f, 0.5f), new Vector2F(0.25f, 0.5f));
var flareTexture = new PackedTexture("Flare", lensFlareTexture, new Vector2F(0.5f, 0.5f), new Vector2F(0.25f, 0.5f));
lensFlare.Elements.Add(new LensFlareElement(-0.2f, 0.55f, 0.0f, new Color(175, 175, 255, 20), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(0.0f, 0.9f, 0.0f, new Color(255, 255, 255, 255), new Vector2F(0.5f, 0.5f), sunTexture));
lensFlare.Elements.Add(new LensFlareElement(0.0f, 1.8f, 0.0f, new Color(255, 255, 255, 128), new Vector2F(0.5f, 0.5f), streaksTexture));
lensFlare.Elements.Add(new LensFlareElement(0.0f, 2.6f, 0.0f, new Color(255, 255, 200, 64), new Vector2F(0.5f, 0.5f), glowTexture));
lensFlare.Elements.Add(new LensFlareElement(0.5f, 0.12f, 0.0f, new Color(60, 60, 180, 35), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(0.55f, 0.46f, 0.0f, new Color(100, 100, 200, 60), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(0.6f, 0.17f, 0.0f, new Color(120, 120, 220, 40), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(0.85f, 0.2f, 0.0f, new Color(60, 60, 255, 100), new Vector2F(0.5f, 0.5f), ringTexture));
lensFlare.Elements.Add(new LensFlareElement(1.5f, 0.2f, 0.0f, new Color(255, 60, 60, 130), new Vector2F(0.5f, 0.5f), flareTexture));
lensFlare.Elements.Add(new LensFlareElement(0.15f, 0.15f, 0.0f, new Color(255, 60, 60, 90), new Vector2F(0.5f, 0.5f), flareTexture));
lensFlare.Elements.Add(new LensFlareElement(1.3f, 0.6f, 0.0f, new Color(60, 60, 255, 180), new Vector2F(0.5f, 0.5f), haloTexture));
lensFlare.Elements.Add(new LensFlareElement(1.4f, 0.2f, 0.0f, new Color(220, 80, 80, 98), new Vector2F(0.5f, 0.5f), haloTexture));
lensFlare.Elements.Add(new LensFlareElement(1.5f, 0.1f, 0.0f, new Color(220, 80, 80, 85), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(1.6f, 0.5f, 0.0f, new Color(60, 60, 255, 80), new Vector2F(0.5f, 0.5f), haloTexture));
lensFlare.Elements.Add(new LensFlareElement(1.8f, 0.3f, 0.0f, new Color(90, 60, 255, 110), new Vector2F(0.5f, 0.5f), ringTexture));
lensFlare.Elements.Add(new LensFlareElement(1.95f, 0.5f, 0.0f, new Color(60, 60, 255, 120), new Vector2F(0.5f, 0.5f), haloTexture));
lensFlare.Elements.Add(new LensFlareElement(2.0f, 0.15f, 0.0f, new Color(60, 60, 255, 85), new Vector2F(0.5f, 0.5f), circleTexture));
// Add lens flare as a child of the sunlight.
var lensFlareNode = new LensFlareNode(lensFlare);
_sunlightNode.Children = new SceneNodeCollection();
_sunlightNode.Children.Add(lensFlareNode);
// Add scene nodes to scene graph.
var scene = _services.GetInstance<IScene>();
scene.Children.Add(_skyboxNode);
scene.Children.Add(_ambientLightNode);
scene.Children.Add(_sunlightNode);
}
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();
}
// OnUnload() is called when the GameObject is removed from the IGameObjectService.
protected override void OnUnload()
{
_skyboxNode.Parent.Children.Remove(_skyboxNode);
_skyboxNode.Dispose(false);
_skyboxNode = null;
_ambientLightNode.Parent.Children.Remove(_ambientLightNode);
_ambientLightNode.Dispose(false);
_ambientLightNode = null;
_sunlightNode.Parent.Children.Remove(_sunlightNode);
_sunlightNode.Dispose(false);
_sunlightNode = null;
}
