/// <summary>
/// Creates a dynamic parameter key for texel size updated from the texture size.
/// </summary>
/// <param name="textureKey">Key of the texture to take the size from</param>
/// <returns>A dynamic TexelSize parameter key updated according to the specified texture</returns>
public static ParameterKey <Vector2> CreateDynamicTexelSizeParameterKey(ParameterKey <Texture> textureKey)
{
if (textureKey == null)
{
throw new ArgumentNullException("textureKey");
}
return(ParameterKeys.NewDynamic(ParameterDynamicValue.New <Vector2, Texture>(textureKey, UpdateTexelSize)));
}
static TransformationKeys()
{
View = ParameterKeys.New(Matrix.Identity);
Projection = ParameterKeys.New(Matrix.Identity);
World = ParameterKeys.New(Matrix.Identity);
WorldView = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Matrix, Matrix, Matrix>(World, View, Matrix.MultiplyRef));
WorldViewProjection = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Matrix, Matrix, Matrix>(World, ViewProjection, Matrix.MultiplyRef));
ProjScreenRay = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Vector2, Matrix>(Projection, ExtractProjScreenRay));
Eye = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Vector4, Matrix>(View, ViewToEye));
EyeMS = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Vector4, Matrix>(WorldView, WorldViewToEyeMS));
WorldInverse = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Matrix, Matrix>(World, InvertMatrix));
WorldInverseTranspose = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Matrix, Matrix>(WorldInverse, TransposeMatrix));
ViewInverse = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Matrix, Matrix>(View, InvertMatrix));
ProjectionInverse = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Matrix, Matrix>(Projection, InvertMatrix));
WorldViewInverse = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Matrix, Matrix>(WorldView, InvertMatrix));
WorldScale = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Vector3, Matrix>(World, ExtractScale));
}
public void AddShadowMap(ShadowMap shadowMap)
{
shadowMaps.Add(shadowMap);
shadowMap.Passes = new RenderPass[shadowMap.LevelCount];
shadowMap.Plugins = new RenderTargetsPlugin[shadowMap.LevelCount];
for (int i = 0; i < shadowMap.Passes.Length; i++)
{
shadowMap.Passes[i] = new RenderPass(string.Format("Pass {0}", i))
{
Parameters = new ParameterCollection(string.Format("Parameters ShadowMap {0}", i))
};
shadowMap.Passes[i].Parameters.AddSources(MainPlugin.ViewParameters);
shadowMap.Passes[i].Parameters.AddSources(shadowMap.CasterParameters);
unsafe
{
int currentPassIndex = i;
shadowMap.Passes[i].Parameters.AddDynamic(TransformationKeys.ViewProjection,
ParameterDynamicValue.New(LightingPlugin.ViewProjectionArray, (ref ShadowMapData input, ref Matrix output) =>
{
fixed(Matrix * vpPtr = &input.ViewProjCaster0)
{
output = vpPtr[currentPassIndex];
}
}));
shadowMap.Passes[i].Parameters.AddDynamic(LightingPlugin.ShadowLightOffset,
ParameterDynamicValue.New(LightingPlugin.ViewProjectionArray, (ref ShadowMapData input, ref Vector3 output) =>
{
fixed(Vector3 * vpPtr = &input.Offset0)
{
output = vpPtr[currentPassIndex];
}
}));
}
shadowMap.Plugins[i] = new RenderTargetsPlugin
{
Services = Services,
EnableClearTarget = false,
EnableClearDepth = false,
RenderPass = shadowMap.Passes[i],
RenderTarget = null,
};
shadowMap.Plugins[i].Apply();
}
RenderPass.Passes.InsertRange(0, shadowMap.Passes);
// Dynamic value used for ViewProjectionArray key
var dynamicViewProjectionArray = ParameterDynamicValue.New(
TransformationKeys.View, TransformationKeys.Projection, LightKeys.LightDirection, LightKeys.LightColor, LightingPlugin.Offsets, (ref Matrix view, ref Matrix projection, ref Vector3 lightDirection, ref Color3 lightColor, ref Vector3[] offsets, ref ShadowMapData result) =>
{
if (projections == null)
{
// Preallocates temporary variables (thread static)
projections = new Matrix[4];
views = new Matrix[4];
shadowsViewProj = new Matrix[8];
points = new Vector3[8];
directions = new Vector3[4];
}
Matrix inverseView, inverseProjection;
Matrix.Invert(ref projection, out inverseProjection);
Matrix.Invert(ref view, out inverseView);
// Frustum in World Space
for (int i = 0; i < 8; ++i)
{
Vector3.TransformCoordinate(ref FrustrumBasePoints[i], ref inverseProjection, out points[i]);
}
for (int i = 0; i < 4; i++)
{
directions[i] = Vector3.Normalize(points[i + 4] - points[i]);
}
// TODO Make these factors configurable. They need also to be correctly tweaked.
float shadowDistribute = 1.0f / shadowMap.LevelCount;
float znear = 1.0f;
float zfar = shadowMap.ShadowDistance;
var shadowOffsets = new Vector3[shadowMap.LevelCount];
var boudingBoxVectors = new Vector3[shadowMap.LevelCount * 2];
var direction = Vector3.Normalize(lightDirection);
// Fake value
// It will be setup by next loop
Vector3 side = Vector3.UnitX;
Vector3 up = Vector3.UnitX;
// Select best Up vector
foreach (var vectorUp in VectorUps)
{
if (Vector3.Dot(direction, vectorUp) < (1.0 - 0.0001))
{
side = Vector3.Normalize(Vector3.Cross(vectorUp, direction));
up = Vector3.Normalize(Vector3.Cross(direction, side));
break;
}
}
for (int cascadeLevel = 0; cascadeLevel < shadowMap.LevelCount; ++cascadeLevel)
{
float k0 = (float)(cascadeLevel + 0) / shadowMap.LevelCount;
float k1 = (float)(cascadeLevel + 1) / shadowMap.LevelCount;
float min = (float)(znear * Math.Pow(zfar / znear, k0)) * (1.0f - shadowDistribute) + (znear + (zfar - znear) * k0) * shadowDistribute;
float max = (float)(znear * Math.Pow(zfar / znear, k1)) * (1.0f - shadowDistribute) + (znear + (zfar - znear) * k1) * shadowDistribute;
for (int j = 0; j < shadowMap.LevelCount; j++)
{
boudingBoxVectors[j] = points[j] + directions[j] * min;
boudingBoxVectors[j + shadowMap.LevelCount] = points[j] + directions[j] * max;
}
var boundingBox = BoundingBox.FromPoints(boudingBoxVectors);
var radius = (boundingBox.Maximum - boundingBox.Minimum).Length() * 0.5f;
var target = Vector3.TransformCoordinate(boundingBox.Center, inverseView);
// Snap camera to texel units (so that shadow doesn't jitter)
var shadowMapHalfSize = shadowMap.ShadowMapSize * 0.5f;
float x = (float)Math.Ceiling(Vector3.Dot(target, up) * shadowMapHalfSize / radius) * radius / shadowMapHalfSize;
float y = (float)Math.Ceiling(Vector3.Dot(target, side) * shadowMapHalfSize / radius) * radius / shadowMapHalfSize;
float z = Vector3.Dot(target, direction);
//target = up * x + side * y + direction * R32G32B32_Float.Dot(target, direction);
target = up * x + side * y + direction * z;
views[cascadeLevel] = Matrix.LookAtLH(target - direction * zfar * 0.5f, target + direction * zfar * 0.5f, up); // View;
projections[cascadeLevel] = Matrix.OrthoOffCenterLH(-radius, radius, -radius, radius, znear / zfar, zfar); // Projection
//float leftX = shadowMap.Level == CascadeShadowMapLevel.X1 ? 0.5f : 0.25f;
//float leftY = shadowMap.Level == CascadeShadowMapLevel.X4 ? 0.25f : 0.5f;
//float centerX = 0.5f * (cascadeLevel % 2) + leftX;
//float centerY = 0.5f * (cascadeLevel / 2) + leftY;
var cascadeTextureCoords = shadowMap.TextureCoordsBorder[cascadeLevel];
float leftX = (float)shadowMap.ShadowMapSize / (float)AtlasSize * 0.5f;
float leftY = (float)shadowMap.ShadowMapSize / (float)AtlasSize * 0.5f;
float centerX = 0.5f * (cascadeTextureCoords.X + cascadeTextureCoords.Z);
float centerY = 0.5f * (cascadeTextureCoords.Y + cascadeTextureCoords.W);
shadowsViewProj[cascadeLevel] = views[cascadeLevel] * projections[cascadeLevel];
shadowsViewProj[cascadeLevel + 4] = shadowsViewProj[cascadeLevel]
* Matrix.Scaling(leftX, -leftY, 0.5f) // Texture0 mapping offsets/scaling
* Matrix.Translation(centerX, centerY, 0.5f);
var shadowVInverse = Matrix.Invert(views[cascadeLevel]);
shadowOffsets[cascadeLevel] = new Vector3(shadowVInverse.M41, shadowVInverse.M42, shadowVInverse.M43);
}
result.LightColor = lightColor;
unsafe
{
fixed(Matrix * resultPtr = &result.ViewProjCaster0)
Utilities.Write((IntPtr)resultPtr, shadowsViewProj, 0, shadowsViewProj.Length);
fixed(Vector3 * resultPtr = &result.Offset0)
Utilities.Write((IntPtr)resultPtr, shadowOffsets, 0, shadowOffsets.Length);
}
});
shadowMap.Parameters.SetDefault(LightKeys.LightDirection);
shadowMap.Parameters.SetDefault(Offsets);
shadowMap.Parameters.SetDefault(ViewProjectionArray);
shadowMap.Parameters.AddDynamic(ViewProjectionArray, dynamicViewProjectionArray);
shadowMap.CasterParameters.Set(EffectPlugin.RasterizerStateKey, null);
shadowMap.Texture = shadowMap.Filter is ShadowMapFilterVsm ? ShadowMapVsm : ShadowMapDepth.Texture;
}
public override void Initialize()
{
base.Initialize();
boundingBoxPass = new RenderPass("BoundingBoxPass");
minMaxPass = new RenderPass("MinmaxPass");
lightShaftPass = new RenderPass("LightShaftPass");
filterUpscalePass = new RenderPass("UpscalePass");
RenderPass.AddPass(boundingBoxPass, minMaxPass, lightShaftPass, filterUpscalePass);
var useUpScaling = false;
var bbRenderTargetPlugin = new RenderTargetsPlugin("BoundingBoxRenderTargetPlugin")
{
EnableSetTargets = true,
EnableClearTarget = true,
RenderPass = boundingBoxPass,
Services = Services,
};
var minMaxEffectBuilder = this.EffectSystemOld.BuildEffect("MinMax")
.Using(new MinMaxShaderPlugin("MinMaxShaderPlugin")
{
RenderPassPlugin = bbRenderTargetPlugin
})
.Using(new BasicShaderPlugin("TransformationWVP")
{
RenderPassPlugin = bbRenderTargetPlugin
});
var minmaxEffectBuilder = this.EffectSystemOld.BuildEffect("LightShaftsMinMax")
.Using(new PostEffectSeparateShaderPlugin()
{
RenderPass = minMaxPass
})
.Using(new BasicShaderPlugin("ForwardShadowMapBase")
{
RenderPass = minMaxPass
})
.Using(new BasicShaderPlugin(new ShaderClassSource("PostEffectMinMax", "ShadowMapUtils.shadowMapTexture", "PointSampler", 4, 4, 0.0, 1.0))
{
RenderPass = minMaxPass
});
var lightShaftsEffectBuilder = this.EffectSystemOld.BuildEffect("LightShafts")
.Using(new PostEffectSeparateShaderPlugin()
{
RenderPass = lightShaftPass
})
.Using(new StateShaderPlugin()
{
UseBlendState = !useUpScaling, RenderPass = lightShaftPass
})
//.Using(new BasicShaderPlugin(new ShaderClassSource("PostEffectLightShafts", Debug ? 1 : 0, RenderContext.IsZReverse ? 1 : 0, StepCount)) { RenderPass = lightShaftPass });
.Using(new BasicShaderPlugin(new ShaderClassSource("PostEffectLightShafts", Debug ? 1 : 0, false ? 1 : 0, StepCount))
{
RenderPass = lightShaftPass
});
if (OfflineCompilation)
{
minMaxEffectBuilder.InstantiatePermutation();
minmaxEffectBuilder.InstantiatePermutation();
lightShaftsEffectBuilder.InstantiatePermutation();
return;
}
Parameters.AddSources(ViewParameters);
Parameters.Set(RenderTargetKeys.DepthStencilSource, DepthStencil.Texture);
Parameters.Set(TexturingKeys.Sampler, GraphicsDevice.SamplerStates.PointClamp);
// BoundingBox prepass
var gbufferDesc = RenderTarget.Description;
var bbRenderTarget = Texture.New2D(GraphicsDevice, gbufferDesc.Width / 8, gbufferDesc.Height / 8, PixelFormat.R32G32_Float, TextureFlags.ShaderResource | TextureFlags.RenderTarget);
// Use MinMax Plugin
bbRenderTargetPlugin.RenderTarget = bbRenderTarget.ToRenderTarget();
bbRenderTargetPlugin.Parameters.AddSources(Parameters);
bbRenderTargetPlugin.Apply();
EffectOld minMaxEffect = minMaxEffectBuilder.InstantiatePermutation();
// Add meshes
foreach (var bbMeshData in BoundingBoxes)
{
// Mesh for MinPass
var bbMesh = new EffectMesh(minMaxEffect, bbMeshData).KeepAliveBy(this);
// Add mesh
// boundingBoxPass.AddPass(bbMesh.EffectMeshPasses[0].EffectPass);
RenderSystem.GlobalMeshes.AddMesh(bbMesh);
}
// MinMax render target
var minMaxRenderTarget = Texture.New2D(GraphicsDevice, 256, 256, PixelFormat.R32G32_Float, TextureFlags.ShaderResource | TextureFlags.RenderTarget);
minMaxPass.Parameters = new ParameterCollection(null);
minMaxPass.Parameters.AddSources(ShadowMap.Parameters);
minMaxPass.Parameters.AddSources(Parameters);
minMaxPass.Parameters.AddDynamic(PostEffectMinMaxKeys.MinMaxCoords, ParameterDynamicValue.New(LightingPlugin.CascadeTextureCoords, (ref Vector4[] cascadeTextureCoords, ref Vector4 output) =>
{
output = cascadeTextureCoords[0];
}, autoCheckDependencies: false));
EffectOld minmaxEffect = minmaxEffectBuilder.InstantiatePermutation();
var minMaxMesh = new EffectMesh(minmaxEffect).KeepAliveBy(this);
minMaxMesh.Parameters.Set(RenderTargetKeys.RenderTarget, minMaxRenderTarget.ToRenderTarget());
RenderSystem.GlobalMeshes.AddMesh(minMaxMesh);
// Light Shafts effect
var blendStateDesc = new BlendStateDescription();
blendStateDesc.SetDefaults();
blendStateDesc.AlphaToCoverageEnable = false;
blendStateDesc.IndependentBlendEnable = false;
blendStateDesc.RenderTargets[0].BlendEnable = true;
blendStateDesc.RenderTargets[0].AlphaBlendFunction = BlendFunction.Add;
blendStateDesc.RenderTargets[0].AlphaSourceBlend = Blend.One;
blendStateDesc.RenderTargets[0].AlphaDestinationBlend = Blend.One;
blendStateDesc.RenderTargets[0].ColorBlendFunction = BlendFunction.Add;
blendStateDesc.RenderTargets[0].ColorSourceBlend = Blend.One;
blendStateDesc.RenderTargets[0].ColorDestinationBlend = Blend.One;
blendStateDesc.RenderTargets[0].ColorWriteChannels = ColorWriteChannels.All;
var additiveBlending = BlendState.New(GraphicsDevice, blendStateDesc);
additiveBlending.Name = "LightShaftAdditiveBlend";
var shaftRenderTarget = useUpScaling ? Texture.New2D(GraphicsDevice, gbufferDesc.Width / 2, gbufferDesc.Height / 2, PixelFormat.R16G16B16A16_Float, TextureFlags.ShaderResource | TextureFlags.RenderTarget).ToRenderTarget() : RenderTarget;
lightShaftPass.Parameters = new ParameterCollection();
lightShaftPass.Parameters.AddSources(ShadowMap.Parameters);
lightShaftPass.Parameters.AddSources(Parameters);
this.lightShaftsEffect = lightShaftsEffectBuilder.InstantiatePermutation();
var mesh = new EffectMesh(lightShaftsEffect).KeepAliveBy(this);
mesh.Parameters.Set(TexturingKeys.Texture0, minMaxRenderTarget);
mesh.Parameters.Set(TexturingKeys.Texture1, bbRenderTarget);
mesh.Parameters.Set(RenderTargetKeys.RenderTarget, shaftRenderTarget);
if (!useUpScaling)
{
mesh.Parameters.Set(EffectPlugin.BlendStateKey, additiveBlending);
}
RenderSystem.GlobalMeshes.AddMesh(mesh);
// Bilateral Gaussian filtering for up-sampling
if (useUpScaling)
{
var bbRenderTargetUpScaleH = Texture.New2D(GraphicsDevice, gbufferDesc.Width, gbufferDesc.Height / 2, PixelFormat.R16G16B16A16_Float, TextureFlags.ShaderResource | TextureFlags.RenderTarget);
var bbRenderTargetUpScaleV = RenderTarget;
//var bbRenderTargetUpScaleV = GraphicsDevice.RenderTarget2D.New(gbufferDesc.Width, gbufferDesc.Height, PixelFormat.HalfVector4);
var blurEffects = new EffectOld[] {
this.EffectSystemOld.BuildEffect("BilateralGaussianFiltering")
.Using(new PostEffectSeparateShaderPlugin())
.Using(new BasicShaderPlugin(new ShaderClassSource("PostEffectBilateralGaussian", 0))),
this.EffectSystemOld.BuildEffect("BilateralGaussianFiltering")
.Using(new StateShaderPlugin()
{
UseBlendState = true
})
.Using(new PostEffectSeparateShaderPlugin())
.Using(new BasicShaderPlugin(new ShaderClassSource("PostEffectBilateralGaussian", 1))),
};
Texture2D textureSourceH = (Texture2D)shaftRenderTarget.Texture;
Texture2D textureSourceV = bbRenderTargetUpScaleH;
RenderTarget renderTargetH = bbRenderTargetUpScaleH.ToRenderTarget();
RenderTarget renderTargetV = bbRenderTargetUpScaleV;
var blurQuadMesh = new EffectMesh[2];
for (int i = 0; i < 2; ++i)
{
blurQuadMesh[i] = new EffectMesh(blurEffects[i]).KeepAliveBy(this);
filterUpscalePass.AddPass(blurQuadMesh[i].EffectPass);
RenderSystem.GlobalMeshes.AddMesh(blurQuadMesh[i]);
}
blurQuadMesh[0].Parameters.Set(TexturingKeys.Texture0, textureSourceH);
blurQuadMesh[1].Parameters.Set(TexturingKeys.Texture0, textureSourceV);
blurQuadMesh[0].Parameters.Set(RenderTargetKeys.RenderTarget, renderTargetH);
blurQuadMesh[1].Parameters.Set(RenderTargetKeys.RenderTarget, renderTargetV);
// Additive blending for 2nd render target
blurQuadMesh[1].Parameters.Set(EffectPlugin.BlendStateKey, additiveBlending);
}
}
public override void Load()
{
base.Load();
if (OfflineCompilation)
{
return;
}
var renderTargets = new RenderTarget[2];
DepthStencilBuffer depthStencilBuffer = null;
Texture2D depthStencilTexture = null;
Parameters.AddSources(MainPlugin.ViewParameters);
Parameters.RegisterParameter(EffectPlugin.BlendStateKey);
var filteredPasses = new FastList <RenderPass>();
RenderPass.UpdatePasses += updatePassesAction = (RenderPass currentRenderPass, ref FastList <RenderPass> currentPasses) =>
{
var originalPasses = currentPasses;
filteredPasses.Clear();
currentPasses = filteredPasses;
Parameters.Set(PickingFrameIndex, ++currentPickingFrameIndex);
Request[] requests;
lock (pendingRequests)
{
// No picking request or no mesh to pick?
if (pendingRequests.Count == 0)
{
return;
}
requests = pendingRequests.ToArray();
pendingRequests.Clear();
}
foreach (var request in requests)
{
requestResults.Add(request);
}
if (originalPasses == null)
{
return;
}
// Count mesh passes
int meshIndex = 0;
foreach (var pass in originalPasses)
{
meshIndex += pass.Passes.Count;
}
// No mesh to pick?
if (meshIndex == 0)
{
return;
}
// Copy mesh passes and assign indices
var meshPasses = new EffectMesh[meshIndex];
meshIndex = 0;
foreach (var pass in RenderPass.Passes)
{
throw new NotImplementedException();
//foreach (var effectMeshPass in pass.Meshes)
//{
// meshPasses[meshIndex] = (EffectMesh)effectMeshPass;
// // Prefix increment so that 0 means no rendering.
// effectMeshPass.Parameters.Set(PickingMeshIndex, ++meshIndex);
//}
}
// For now, it generates one rendering per picking.
// It would be quite easy to optimize it by make Picking shader works on multiple picking points at a time.
foreach (var request in requests)
{
var pickingRenderPass = new RenderPass("Picking");
pickingRenderPass.StartPass.AddFirst = (threadContext) =>
{
threadContext.GraphicsDevice.Clear(renderTargets[0], Color.Black);
threadContext.GraphicsDevice.Clear(renderTargets[1], Color.Black);
threadContext.Parameters.Set(PickingScreenPosition, request.Location);
threadContext.GraphicsDevice.SetViewport(new Viewport(0, 0, renderTargets[0].Description.Width, renderTargets[0].Description.Height));
threadContext.GraphicsDevice.Clear(depthStencilBuffer, DepthStencilClearOptions.DepthBuffer);
threadContext.GraphicsDevice.SetRenderTargets(depthStencilBuffer, renderTargets);
};
pickingRenderPass.EndPass.AddLast = (threadContext) =>
{
threadContext.Parameters.Reset(PickingScreenPosition);
threadContext.GraphicsDevice.Copy(renderTargets[0].Texture, request.ResultTextures[0]);
threadContext.GraphicsDevice.Copy(renderTargets[1].Texture, request.ResultTextures[1]);
};
//pickingRenderPass.PassesInternal = originalPasses;
throw new NotImplementedException();
request.MeshPasses = meshPasses;
currentPasses.Add(pickingRenderPass);
request.HasResults = true;
// Wait 2 frames before pulling the results.
request.FrameCounter = 2;
}
};
RenderSystem.GlobalPass.EndPass.AddLast = CheckPickingResults;
var backBuffer = GraphicsDevice.BackBuffer;
int pickingArea = 1 + PickingDistance * 2;
renderTargets[0] = Texture.New2D(GraphicsDevice, pickingArea, pickingArea, PixelFormat.R32_UInt, TextureFlags.ShaderResource | TextureFlags.RenderTarget).ToRenderTarget().KeepAliveBy(ActiveObjects);
renderTargets[1] = Texture.New2D(GraphicsDevice, pickingArea, pickingArea, PixelFormat.R32G32B32A32_Float, TextureFlags.ShaderResource | TextureFlags.RenderTarget).ToRenderTarget().KeepAliveBy(ActiveObjects);
depthStencilTexture = Texture.New2D(GraphicsDevice, pickingArea, pickingArea, PixelFormat.D32_Float, TextureFlags.ShaderResource | TextureFlags.DepthStencil).KeepAliveBy(ActiveObjects);
depthStencilBuffer = depthStencilTexture.ToDepthStencilBuffer(false);
Parameters.AddDynamic(PickingMatrix, ParameterDynamicValue.New(PickingScreenPosition, (ref Vector2 pickingPosition, ref Matrix picking) =>
{
// Move center to picked position, and zoom (it is supposed to stay per-pixel according to render target size)
picking = Matrix.Translation(1.0f - (pickingPosition.X) / backBuffer.Width * 2.0f, -1.0f + (pickingPosition.Y) / backBuffer.Height * 2.0f, 0.0f)
* Matrix.Scaling((float)backBuffer.Width / (float)pickingArea, (float)backBuffer.Height / (float)pickingArea, 1.0f);
}));
}
public void SetupLighting(EffectShaderPass effectPass, object permutationKeyObject)
{
var permutationKey = (LightingPermutation.KeyInfo)permutationKeyObject;
if (permutationKey.PerPixelDirectionalLightCount > 0)
{
effectPass.Shader.Mixins.Add(new ShaderClassSource("LightMultiDirectionalShadingPerPixel", permutationKey.PerPixelDirectionalLightCount));
// Light colors
effectPass.Parameters.AddDynamic(LightMultiDirectionalShadingPerPixelKeys.LightColorsWithGamma, ParameterDynamicValue.New(LightingPermutation.Key,
(ref LightingPermutation lightPermutation, ref Color3[] lightColorsWithGamma) =>
LightColorsUpdate(lightPermutation.PerPixelDirectionalLights, lightColorsWithGamma)
, autoCheckDependencies: false));
// LightDirectionVS
effectPass.Parameters.AddDynamic(LightMultiDirectionalShadingPerPixelKeys.LightDirectionsVS, ParameterDynamicValue.New(LightingPermutation.Key, TransformationKeys.View, (ref LightingPermutation lightPermutation, ref Matrix view, ref Vector3[] lightDirectionVS) =>
{
int index = 0;
foreach (var lightBinding in lightPermutation.PerPixelDirectionalLights)
{
var lightDirection = ((DirectionalLight)lightBinding.Light).LightDirection;
LightKeys.LightDirectionVSUpdate(ref lightDirection, ref view, ref lightDirectionVS[index++]);
}
}, autoCheckDependencies: false));
}
if (permutationKey.PerPixelDiffuseDirectionalLightCount > 0)
{
effectPass.Shader.Mixins.Add(new ShaderClassSource("LightMultiDirectionalShadingDiffusePerPixel", permutationKey.PerPixelDiffuseDirectionalLightCount));
// Light colors
effectPass.Parameters.AddDynamic(LightMultiDirectionalShadingDiffusePerPixelKeys.LightColorsWithGamma, ParameterDynamicValue.New(LightingPermutation.Key,
(ref LightingPermutation lightPermutation, ref Color3[] lightColorsWithGamma) =>
LightColorsUpdate(lightPermutation.PerPixelDiffuseDirectionalLights, lightColorsWithGamma)
, autoCheckDependencies: false));
// LightDirectionVS
effectPass.Parameters.AddDynamic(LightMultiDirectionalShadingDiffusePerPixelKeys.LightDirectionsVS, ParameterDynamicValue.New(LightingPermutation.Key, TransformationKeys.View, (ref LightingPermutation lightPermutation, ref Matrix view, ref Vector3[] lightDirectionVS) =>
{
int index = 0;
foreach (var lightBinding in lightPermutation.PerPixelDiffuseDirectionalLights)
{
var lightDirection = ((DirectionalLight)lightBinding.Light).LightDirection;
LightKeys.LightDirectionVSUpdate(ref lightDirection, ref view, ref lightDirectionVS[index++]);
}
}, autoCheckDependencies: false));
}
if (permutationKey.PerVertexDirectionalLightCount > 0)
{
effectPass.Shader.Mixins.Add(new ShaderClassSource("LightMultiDirectionalShadingPerVertex", permutationKey.PerVertexDirectionalLightCount));
// Light colors
effectPass.Parameters.AddDynamic(LightMultiDirectionalShadingPerVertexKeys.LightColorsWithGamma, ParameterDynamicValue.New(LightingPermutation.Key,
(ref LightingPermutation lightPermutation, ref Color3[] lightColorsWithGamma) =>
LightColorsUpdate(lightPermutation.PerVertexDirectionalLights, lightColorsWithGamma)
, autoCheckDependencies: false));
// LightDirectionWS
effectPass.Parameters.AddDynamic(LightMultiDirectionalShadingPerVertexKeys.LightDirectionsWS, ParameterDynamicValue.New(LightingPermutation.Key, (ref LightingPermutation lightPermutation, ref Vector3[] lightDirectionWS) =>
{
int index = 0;
foreach (var lightBinding in lightPermutation.PerVertexDirectionalLights)
{
lightDirectionWS[index++] = ((DirectionalLight)lightBinding.Light).LightDirection;
}
}, autoCheckDependencies: false));
}
if (permutationKey.PerVertexDiffusePixelSpecularDirectionalLightCount > 0)
{
effectPass.Shader.Mixins.Add(new ShaderClassSource("LightMultiDirectionalShadingSpecularPerPixel", permutationKey.PerVertexDiffusePixelSpecularDirectionalLightCount));
// Light colors
effectPass.Parameters.AddDynamic(LightMultiDirectionalShadingSpecularPerPixelKeys.LightColorsWithGamma, ParameterDynamicValue.New(LightingPermutation.Key,
(ref LightingPermutation lightPermutation, ref Color3[] lightColorsWithGamma) =>
LightColorsUpdate(lightPermutation.PerVertexDiffusePixelSpecularDirectionalLights, lightColorsWithGamma)
, autoCheckDependencies: false));
// LightDirectionWS
effectPass.Parameters.AddDynamic(LightMultiDirectionalShadingSpecularPerPixelKeys.LightDirectionsWS, ParameterDynamicValue.New(LightingPermutation.Key, (ref LightingPermutation lightPermutation, ref Vector3[] lightDirectionWS) =>
{
int index = 0;
foreach (var lightBinding in lightPermutation.PerVertexDiffusePixelSpecularDirectionalLights)
{
lightDirectionWS[index++] = ((DirectionalLight)lightBinding.Light).LightDirection;
}
}, autoCheckDependencies: false));
}
}
public void SetupShadersPermutationReceiver(EffectShaderPass effectPass, object permutationKey)
{
var currentShadowMapsPermutation = (ShadowMapPermutationArray)permutationKey;
if (currentShadowMapsPermutation.ShadowMaps.Count == 0)
{
return;
}
var shadowsArray = new ShaderArraySource();
effectPass.Shader.Mixins.Add("ShadowMapReceiver");
effectPass.Shader.Compositions.Add("shadows", shadowsArray);
// Group by shadow map types (one group can be processed in the same loop).
// Currently based on filtering type and number of cascades (but some more parameters might affect this later as new type of shadow maps are introduced).
var shadowMapTypes = currentShadowMapsPermutation.ShadowMaps.GroupBy(x => Tuple.Create(x.ShadowMap.Filter.GetType(), x.ShadowMap.LevelCount, x.ShadowMap.Texture));
int shadowMapTypeIndex = 0;
foreach (var shadowMapType in shadowMapTypes)
{
var shadowMapTypeCopy = shadowMapType.ToArray();
var shadowMixin = new ShaderMixinSource();
// Currently use shadow map count, but we should probably use next power of two to limit number of permutations.
var maxShadowMapCount = shadowMapTypeCopy.Length;
// Setup shadow mapping
shadowMixin.Mixins.Add(new ShaderClassSource("ShadowMapCascadeBase", shadowMapType.Key.Item2, 0, maxShadowMapCount, 1));
//shadowMixin.Mixins.Add(new ShaderClassSource("LightDirectionalShading", shadowMapPermutation.Index));
// Setup the filter
// TODO: Use static based on type of filter? (should use Key instead of First()).
shadowMixin.Mixins.Add(shadowMapType.First().ShadowMap.Filter.GenerateShaderSource(maxShadowMapCount));
shadowsArray.Add(shadowMixin);
// Register keys for this shadow map type
var shadowSubKey = string.Format(".shadows[{0}]", shadowMapTypeIndex++);
effectPass.Parameters.Set(ShadowMapKeys.Texture.AppendKey(shadowSubKey), shadowMapType.Key.Item3);
effectPass.Parameters.Set(LightingPlugin.ShadowMapLightCount.AppendKey(shadowSubKey), shadowMapTypeCopy.Length);
effectPass.Parameters.AddDynamic(LightingPlugin.ReceiverInfo.AppendKey(shadowSubKey), ParameterDynamicValue.New(ShadowMapPermutationArray.Key, TransformationKeys.World, TransformationKeys.ViewProjection, (ref ShadowMapPermutationArray shadowMapPermutations, ref Matrix world, ref Matrix viewProj, ref ShadowMapReceiverInfo[] output) =>
{
unsafe
{
for (int i = 0; i < shadowMapTypeCopy.Length; ++i)
{
var permutationParameters = shadowMapTypeCopy[i].ShadowMap.Parameters;
// TODO: Optimize dictionary access this using SetKeyMapping
var shadowMapData = permutationParameters.Get(LightingPlugin.ViewProjectionArray);
var textureCoords = permutationParameters.Get(LightingPlugin.CascadeTextureCoordsBorder);
var distanceMax = permutationParameters.Get(ShadowMapKeys.DistanceMax);
var lightDirection = permutationParameters.Get(LightKeys.LightDirection);
Matrix *vpPtr = &shadowMapData.ViewProjReceiver0;
fixed(Matrix * wvpPtr = &output[i].WorldViewProjReceiver0)
{
for (int j = 0; j < 4; ++j)
{
Matrix.Multiply(ref world, ref vpPtr[j], ref wvpPtr[j]);
}
}
output[i].Offset0 = shadowMapData.Offset0;
output[i].Offset1 = shadowMapData.Offset1;
output[i].Offset2 = shadowMapData.Offset2;
output[i].Offset3 = shadowMapData.Offset3;
fixed(Vector4 * targetPtr = &output[i].CascadeTextureCoordsBorder0)
fixed(Vector4 * sourcePtr = &textureCoords[0])
{
for (int j = 0; j < 4; ++j)
{
targetPtr[j] = sourcePtr[j];
}
}
output[i].ShadowLightDirection = lightDirection;
LightKeys.LightDirectionVSUpdate(ref output[i].ShadowLightDirection, ref viewProj, ref output[i].ShadowLightDirectionVS);
output[i].ShadowMapDistance = distanceMax;
output[i].ShadowLightColor = shadowMapData.LightColor;
}
}
}, autoCheckDependencies: false)); // Always update (permutation won't get updated, only its content)!
// Register VSM filter if necessary
if (shadowMapType.Key.Item1 == typeof(ShadowMapFilterVsm))
{
effectPass.Parameters.AddDynamic(LightingPlugin.ReceiverVsmInfo.AppendKey(shadowSubKey), ParameterDynamicValue.New(ShadowMapPermutationArray.Key, (ref ShadowMapPermutationArray shadowMapPermutations, ref ShadowMapReceiverVsmInfo[] output) =>
{
for (int i = 0; i < shadowMapTypeCopy.Length; ++i)
{
var permutationParameters = shadowMapTypeCopy[i].ShadowMap.Parameters;
output[i].BleedingFactor = permutationParameters.Get(ShadowMapFilterVsm.VsmBleedingFactor);
output[i].MinVariance = permutationParameters.Get(ShadowMapFilterVsm.VsmMinVariance);
}
}, autoCheckDependencies: false));
}
}
}
static CameraKeys()
{
ZProjection = ParameterKeys.NewDynamic(ParameterDynamicValue.New <Vector2, float, float>(NearClipPlane, FarClipPlane, ZProjectionACalculate));
}