/** Sets shader parameter values */
void SetParameters(
FRHICommandList& RHICmdList, FSamplerStateRHIParamRef SamplerStateRHI, FTextureRHIParamRef FilterTextureRHI, FTextureRHIParamRef AdditiveTextureRHI,
const FLinearColor* SampleWeightValues, const FVector2D* SampleOffsetValues, uint32 NumSamples )
{
check(CompileTimeNumSamples == 0 && NumSamples > 0 && NumSamples <= MAX_FILTER_SAMPLES || CompileTimeNumSamples == NumSamples);
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
SetTextureParameter(RHICmdList, ShaderRHI, FilterTexture, FilterTextureSampler, SamplerStateRHI, FilterTextureRHI);
SetTextureParameter(RHICmdList, ShaderRHI, AdditiveTexture, AdditiveTextureSampler, SamplerStateRHI, AdditiveTextureRHI);
SetShaderValueArray(RHICmdList, ShaderRHI, SampleWeights, SampleWeightValues, NumSamples);
if (CompileTimeNumSamples == 0)
{
// we needs additional setups for the dynamic loop
FVector4 PackedSampleOffsetsValues[MAX_PACKED_SAMPLES_OFFSET];
for(uint32 SampleIndex = 0;SampleIndex < NumSamples;SampleIndex += 2)
{
PackedSampleOffsetsValues[SampleIndex / 2].X = SampleOffsetValues[SampleIndex + 0].X;
PackedSampleOffsetsValues[SampleIndex / 2].Y = SampleOffsetValues[SampleIndex + 0].Y;
if(SampleIndex + 1 < NumSamples)
{
PackedSampleOffsetsValues[SampleIndex / 2].W = SampleOffsetValues[SampleIndex + 1].X;
PackedSampleOffsetsValues[SampleIndex / 2].Z = SampleOffsetValues[SampleIndex + 1].Y;
}
}
SetShaderValueArray(RHICmdList, ShaderRHI, SampleOffsets, PackedSampleOffsetsValues, MAX_PACKED_SAMPLES_OFFSET);
SetShaderValue(RHICmdList, ShaderRHI, SampleCount, NumSamples);
}
}
void SetPS(const FRenderingCompositePassContext& Context, uint16 InShadingModelMaskInView)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
FGlobalShader::SetParameters(Context.RHICmdList, ShaderRHI, Context.View);
PostprocessParameter.SetPS(ShaderRHI, Context, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI());
DeferredParameters.Set(Context.RHICmdList, ShaderRHI, Context.View);
static FLinearColor SoftBits[sizeof(InShadingModelMaskInView) * 8] = {}; // init with 0.0f
for(uint32 i = 0; i < sizeof(InShadingModelMaskInView) * 8; ++i)
{
float& ref = SoftBits[i].R;
ref -= Context.View.Family->DeltaWorldTime;
ref = FMath::Max(0.0f, ref);
if(InShadingModelMaskInView & (1 << i))
{
ref = 1.0f;
}
}
SetShaderValueArray(Context.RHICmdList, ShaderRHI, ShadingModelMaskInView, SoftBits, sizeof(InShadingModelMaskInView) * 8);
}
void SetParameters(FRHICommandList& RHICmdList, const FScene* Scene, const FSceneView& View, const FMatrix& WorldToShadowValue, int32 NumPlanes, const FPlane* PlaneData, const FVector4& ShadowBoundingSphereValue)
{
FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
FGlobalShader::SetParameters(RHICmdList, ShaderRHI, View);
ObjectBufferParameters.Set(RHICmdList, ShaderRHI, *(Scene->DistanceFieldSceneData.ObjectBuffers), Scene->DistanceFieldSceneData.NumObjectsInBuffer);
ObjectIndirectArguments.SetBuffer(RHICmdList, ShaderRHI, GShadowCulledObjectBuffers.Buffers.ObjectIndirectArguments);
CulledObjectBounds.SetBuffer(RHICmdList, ShaderRHI, GShadowCulledObjectBuffers.Buffers.Bounds);
CulledObjectData.SetBuffer(RHICmdList, ShaderRHI, GShadowCulledObjectBuffers.Buffers.Data);
CulledObjectBoxBounds.SetBuffer(RHICmdList, ShaderRHI, GShadowCulledObjectBuffers.Buffers.BoxBounds);
SetShaderValue(RHICmdList, ShaderRHI, ObjectBoundingGeometryIndexCount, StencilingGeometry::GLowPolyStencilSphereIndexBuffer.GetIndexCount());
SetShaderValue(RHICmdList, ShaderRHI, WorldToShadow, WorldToShadowValue);
SetShaderValue(RHICmdList, ShaderRHI, ShadowBoundingSphere, ShadowBoundingSphereValue);
if (NumPlanes < 12)
{
SetShaderValue(RHICmdList, ShaderRHI, NumShadowHullPlanes, NumPlanes);
SetShaderValueArray(RHICmdList, ShaderRHI, ShadowConvexHull, PlaneData, NumPlanes);
}
else
{
SetShaderValue(RHICmdList, ShaderRHI, NumShadowHullPlanes, 0);
}
}
/** Sets shader parameter values */
void SetParameters(FRHICommandList& RHICmdList, FSamplerStateRHIParamRef SamplerStateRHI, FTextureRHIParamRef FilterTextureRHI, FTextureRHIParamRef AdditiveTextureRHI, const FLinearColor* SampleWeightValues)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
SetTextureParameter(RHICmdList, ShaderRHI, FilterTexture, FilterTextureSampler, SamplerStateRHI, FilterTextureRHI);
SetTextureParameter(RHICmdList, ShaderRHI, AdditiveTexture, AdditiveTextureSampler, SamplerStateRHI, AdditiveTextureRHI);
SetShaderValueArray(RHICmdList, ShaderRHI, SampleWeights, SampleWeightValues, NumSamples);
}
void SetPS(const FRenderingCompositePassContext& Context)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
FGlobalShader::SetParameters(Context.RHICmdList, ShaderRHI, Context.View);
const FPostProcessSettings& Settings = Context.View.FinalPostProcessSettings;
const FSceneViewFamily& ViewFamily = *(Context.View.Family);
PostprocessParameter.SetPS(ShaderRHI, Context, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI());
{
FVector4 Temp[3];
FRCPassPostProcessEyeAdaptation::ComputeEyeAdaptationParamsValue(Context.View, Temp);
SetShaderValueArray(Context.RHICmdList, ShaderRHI, EyeAdaptationParams, Temp, 3);
}
SetTextureParameter(Context.RHICmdList, ShaderRHI, MiniFontTexture, GEngine->MiniFontTexture ? GEngine->MiniFontTexture->Resource->TextureRHI : GSystemTextures.WhiteDummy->GetRenderTargetItem().TargetableTexture);
{
FIntPoint GatherExtent = FRCPassPostProcessHistogram::ComputeGatherExtent(Context.View);
uint32 TexelPerThreadGroupX = FRCPassPostProcessHistogram::ThreadGroupSizeX * FRCPassPostProcessHistogram::LoopCountX;
uint32 TexelPerThreadGroupY = FRCPassPostProcessHistogram::ThreadGroupSizeY * FRCPassPostProcessHistogram::LoopCountY;
FIntRect Value(GatherExtent, FIntPoint(TexelPerThreadGroupX, TexelPerThreadGroupY));
SetShaderValue(Context.RHICmdList, ShaderRHI, HistogramParams, Value);
}
{
float InvDisplayGammaValue = 1.0f / ViewFamily.RenderTarget->GetDisplayGamma();
SetShaderValue(Context.RHICmdList, ShaderRHI, InverseGamma, InvDisplayGammaValue);
}
{
FVector4 Constants[8];
FilmPostSetConstants(Constants, ~0, &Context.View.FinalPostProcessSettings, false);
SetShaderValue(Context.RHICmdList, ShaderRHI, ColorMatrixR_ColorCurveCd1, Constants[0]);
SetShaderValue(Context.RHICmdList, ShaderRHI, ColorMatrixG_ColorCurveCd3Cm3, Constants[1]);
SetShaderValue(Context.RHICmdList, ShaderRHI, ColorMatrixB_ColorCurveCm2, Constants[2]);
SetShaderValue(Context.RHICmdList, ShaderRHI, ColorCurve_Cm0Cd0_Cd2_Ch0Cm1_Ch3, Constants[3]);
SetShaderValue(Context.RHICmdList, ShaderRHI, ColorCurve_Ch1_Ch2, Constants[4]);
SetShaderValue(Context.RHICmdList, ShaderRHI, ColorShadow_Luma, Constants[5]);
SetShaderValue(Context.RHICmdList, ShaderRHI, ColorShadow_Tint1, Constants[6]);
SetShaderValue(Context.RHICmdList, ShaderRHI, ColorShadow_Tint2, Constants[7]);
}
}
void SetPS(const FRenderingCompositePassContext& Context)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
FGlobalShader::SetParameters(Context.RHICmdList, ShaderRHI, Context.View);
PostprocessParameter.SetPS(ShaderRHI, Context, TStaticSamplerState<SF_Bilinear,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI());
{
FVector4 Temp[3];
FRCPassPostProcessEyeAdaptation::ComputeEyeAdaptationParamsValue(Context.View, Temp);
SetShaderValueArray(Context.RHICmdList, ShaderRHI, EyeAdaptationParams, Temp, 3);
}
}
void SetParameters(const FRenderingCompositePassContext& Context)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
FGlobalShader::SetParameters(Context.RHICmdList, ShaderRHI, Context.View);
PostprocessParameter.SetPS(ShaderRHI, Context, TStaticSamplerState<SF_Point,AM_Border,AM_Border,AM_Clamp>::GetRHI());
DeferredParameters.Set(Context.RHICmdList, ShaderRHI, Context.View);
{
FVector4 DepthOfFieldParamValues[2];
FRCPassPostProcessBokehDOF::ComputeDepthOfFieldParams(Context, DepthOfFieldParamValues);
SetShaderValueArray(Context.RHICmdList, ShaderRHI, DepthOfFieldParams, DepthOfFieldParamValues, 2);
}
}
void SetPS(const FRenderingCompositePassContext& Context)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
FGlobalShader::SetParameters(Context.RHICmdList, ShaderRHI, Context.View);
PostprocessParameter.SetPS(ShaderRHI, Context, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI());
DeferredParameters.Set(Context.RHICmdList, ShaderRHI, Context.View);
{
FVector4 Temp[3];
FRCPassPostProcessEyeAdaptation::ComputeEyeAdaptationParamsValue(Context.View, Temp);
SetShaderValueArray(Context.RHICmdList, ShaderRHI, EyeAdaptationParams, Temp, 3);
}
SetTextureParameter(Context.RHICmdList, ShaderRHI, MiniFontTexture, GEngine->MiniFontTexture ? GEngine->MiniFontTexture->Resource->TextureRHI : GSystemTextures.WhiteDummy->GetRenderTargetItem().TargetableTexture);
}
void SetCS(const FRenderingCompositePassContext& Context, FIntPoint ThreadGroupCountValue, FIntPoint LeftTopOffsetValue, FIntPoint GatherExtent)
{
const FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
FGlobalShader::SetParameters(ShaderRHI, Context.View);
PostprocessParameter.SetCS(ShaderRHI, Context, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI());
SetShaderValue(ShaderRHI, ThreadGroupCount, ThreadGroupCountValue);
SetShaderValue(ShaderRHI, LeftTopOffset, LeftTopOffsetValue);
FVector4 HistogramParametersValue(GatherExtent.X, GatherExtent.Y, 0, 0);
SetShaderValue(ShaderRHI, HistogramParameters, HistogramParametersValue);
{
FVector4 Temp[3];
FRCPassPostProcessEyeAdaptation::ComputeEyeAdaptationParamsValue(Context.View, Temp);
SetShaderValueArray(ShaderRHI, EyeAdaptationParams, Temp, 3);
}
}
void SetParameters(FRHICommandList& RHICmdList, const FScene* Scene, const FSceneView& View, const FProjectedShadowInfo* ProjectedShadowInfo)
{
FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
FGlobalShader::SetParameters(RHICmdList, ShaderRHI, View);
ObjectBufferParameters.Set(RHICmdList, ShaderRHI, *(Scene->DistanceFieldSceneData.ObjectBuffers), Scene->DistanceFieldSceneData.NumObjectsInBuffer);
ObjectIndirectArguments.SetBuffer(RHICmdList, ShaderRHI, GShadowCulledObjectBuffers.Buffers.ObjectIndirectArguments);
CulledObjectBounds.SetBuffer(RHICmdList, ShaderRHI, GShadowCulledObjectBuffers.Buffers.Bounds);
CulledObjectData.SetBuffer(RHICmdList, ShaderRHI, GShadowCulledObjectBuffers.Buffers.Data);
CulledObjectBoxBounds.SetBuffer(RHICmdList, ShaderRHI, GShadowCulledObjectBuffers.Buffers.BoxBounds);
SetShaderValue(RHICmdList, ShaderRHI, ObjectBoundingGeometryIndexCount, StencilingGeometry::GLowPolyStencilSphereIndexBuffer.GetIndexCount());
const FMatrix WorldToShadowValue = FTranslationMatrix(ProjectedShadowInfo->PreShadowTranslation) * ProjectedShadowInfo->SubjectAndReceiverMatrix;
SetShaderValue(RHICmdList, ShaderRHI, WorldToShadow, WorldToShadowValue);
int32 NumPlanes = 0;
const FPlane* PlaneData = NULL;
FVector4 ShadowBoundingSphereValue(0, 0, 0, 0);
if (ProjectedShadowInfo->bDirectionalLight)
{
NumPlanes = ProjectedShadowInfo->CascadeSettings.ShadowBoundsAccurate.Planes.Num();
PlaneData = ProjectedShadowInfo->CascadeSettings.ShadowBoundsAccurate.Planes.GetData();
}
else if (ProjectedShadowInfo->bOnePassPointLightShadow)
{
ShadowBoundingSphereValue = FVector4(ProjectedShadowInfo->ShadowBounds.Center.X, ProjectedShadowInfo->ShadowBounds.Center.Y, ProjectedShadowInfo->ShadowBounds.Center.Z, ProjectedShadowInfo->ShadowBounds.W);
}
else
{
NumPlanes = ProjectedShadowInfo->CasterFrustum.Planes.Num();
PlaneData = ProjectedShadowInfo->CasterFrustum.Planes.GetData();
ShadowBoundingSphereValue = FVector4(ProjectedShadowInfo->PreShadowTranslation, 0);
}
check(NumPlanes < 12);
SetShaderValue(RHICmdList, ShaderRHI, NumShadowHullPlanes, NumPlanes);
SetShaderValue(RHICmdList, ShaderRHI, ShadowBoundingSphere, ShadowBoundingSphereValue);
SetShaderValueArray(RHICmdList, ShaderRHI, ShadowConvexHull, PlaneData, NumPlanes);
}
void SetParameters(const FRenderingCompositePassContext& Context)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
const FSceneView& View = Context.View;
FGlobalShader::SetParameters(Context.RHICmdList, ShaderRHI, View);
PostprocessParameter.SetPS(ShaderRHI, Context, TStaticSamplerState<SF_Bilinear,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI());
{
FVector4 Value[3];
float Alpha = View.FinalPostProcessSettings.SceneFringeSaturation;
float t = 1.0f / 3.0f;
Value[0] = FMath::Lerp(FVector4(t, t, t, 0), FVector4(1, 0, 0, 0), Alpha);
Value[1] = FMath::Lerp(FVector4(t, t, t, 0), FVector4(0, 1, 0, 0), Alpha);
Value[2] = FMath::Lerp(FVector4(t, t, t, 0), FVector4(0, 0, 1, 0), Alpha);
SetShaderValueArray(Context.RHICmdList, ShaderRHI, FringeColorParams, Value, 3);
}
}
void SetParameters(const FRenderingCompositePassContext& Context)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
FGlobalShader::SetParameters(Context.RHICmdList, ShaderRHI, Context.View);
DeferredParameters.Set(Context.RHICmdList, ShaderRHI, Context.View);
PostprocessParameter.SetPS(ShaderRHI, Context, TStaticSamplerState<SF_Bilinear,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI());
FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(Context.RHICmdList);
FIntPoint OutScaledSize;
float OutScale;
SceneContext.GetSeparateTranslucencyDimensions(OutScaledSize, OutScale);
SetShaderValue(Context.RHICmdList, ShaderRHI, SeparateTranslucencyResMultParam, FVector4(OutScale, OutScale, OutScale, OutScale));
{
FVector4 DepthOfFieldParamValues[2];
FRCPassPostProcessBokehDOF::ComputeDepthOfFieldParams(Context, DepthOfFieldParamValues);
SetShaderValueArray(Context.RHICmdList, ShaderRHI, DepthOfFieldParams, DepthOfFieldParamValues, 2);
}
if (UseNearestDepthNeighborUpsample())
{
check(SceneContext.IsSeparateTranslucencyDepthValid());
FTextureRHIParamRef LowResDepth = SceneContext.GetSeparateTranslucencyDepthSurface();
SetTextureParameter(Context.RHICmdList, ShaderRHI, LowResDepthTexture, LowResDepth);
const auto& BuiltinSamplersUBParameter = GetUniformBufferParameter<FBuiltinSamplersParameters>();
SetUniformBufferParameter(Context.RHICmdList, ShaderRHI, BuiltinSamplersUBParameter, GBuiltinSamplersUniformBuffer.GetUniformBufferRHI());
}
else
{
checkSlow(!LowResDepthTexture.IsBound());
}
}
void SetParameters(const FVisualizeTextureData& Data)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
{
// alternates between 0 and 1 with a short pause
const float FracTimeScale = 2.0f;
float FracTime = GCurrentTime * FracTimeScale - floor(GCurrentTime * FracTimeScale);
float BlinkState = (FracTime > 0.5f) ? 1.0f : 0.0f;
FVector4 VisualizeParamValue[3];
float Add = 0.0f;
float FracScale = 1.0f;
// w * almost_1 to avoid frac(1) => 0
VisualizeParamValue[0] = FVector4(Data.RGBMul, Data.AMul, Add, FracScale * 0.9999f);
VisualizeParamValue[1] = FVector4(BlinkState, Data.bSaturateInsteadOfFrac ? 1.0f : 0.0f, Data.ArrayIndex, Data.CustomMip);
VisualizeParamValue[2] = FVector4(Data.InputValueMapping, 0, 0,0);
SetShaderValueArray(ShaderRHI, VisualizeParam, VisualizeParamValue, 3);
}
{
FVector4 TextureExtentValue(Data.Desc.Extent.X, Data.Desc.Extent.Y, Data.Desc.Depth, 0);
SetShaderValue(ShaderRHI, TextureExtent, TextureExtentValue);
}
SetSRVParameter( ShaderRHI, VisualizeDepthStencilTexture, Data.StencilSRV );
SetTextureParameter(ShaderRHI, VisualizeTexture2D, VisualizeTexture2DSampler, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI(), (FTextureRHIRef&)Data.RenderTargetItem.ShaderResourceTexture);
SetTextureParameter(ShaderRHI, VisualizeTexture2DMS, (FTextureRHIRef&)Data.RenderTargetItem.TargetableTexture);
SetTextureParameter(ShaderRHI, VisualizeTexture3D, VisualizeTexture3DSampler, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI(), (FTextureRHIRef&)Data.RenderTargetItem.ShaderResourceTexture);
SetTextureParameter(ShaderRHI, VisualizeTextureCube, VisualizeTextureCubeSampler, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI(), (FTextureRHIRef&)Data.RenderTargetItem.ShaderResourceTexture);
SetTextureParameter(ShaderRHI, VisualizeTextureCubeArray, VisualizeTextureCubeArraySampler, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI(), (FTextureRHIRef&)Data.RenderTargetItem.ShaderResourceTexture);
}
// TODO support ExcludeRect
void DrawClearQuadMRT(FRHICommandList& RHICmdList, ERHIFeatureLevel::Type FeatureLevel, bool bClearColor, int32 NumClearColors, const FLinearColor* ClearColorArray, bool bClearDepth, float Depth, bool bClearStencil, uint32 Stencil)
{
// Set new states
FBlendStateRHIParamRef BlendStateRHI;
if (NumClearColors <= 1)
{
BlendStateRHI = bClearColor
? TStaticBlendState<>::GetRHI()
: TStaticBlendState<CW_NONE>::GetRHI();
}
else
{
BlendStateRHI = bClearColor
? TStaticBlendState<>::GetRHI()
: TStaticBlendStateWriteMask<CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE,CW_NONE>::GetRHI();
}
const FDepthStencilStateRHIParamRef DepthStencilStateRHI =
(bClearDepth && bClearStencil)
? TStaticDepthStencilState<
true, CF_Always,
true,CF_Always,SO_Replace,SO_Replace,SO_Replace,
false,CF_Always,SO_Replace,SO_Replace,SO_Replace,
0xff,0xff
>::GetRHI()
: bClearDepth
? TStaticDepthStencilState<true, CF_Always>::GetRHI()
: bClearStencil
? TStaticDepthStencilState<
false, CF_Always,
true,CF_Always,SO_Replace,SO_Replace,SO_Replace,
false,CF_Always,SO_Replace,SO_Replace,SO_Replace,
0xff,0xff
>::GetRHI()
: TStaticDepthStencilState<false, CF_Always>::GetRHI();
RHICmdList.SetRasterizerState(TStaticRasterizerState<FM_Solid, CM_None>::GetRHI());
RHICmdList.SetBlendState(BlendStateRHI);
RHICmdList.SetDepthStencilState(DepthStencilStateRHI);
auto ShaderMap = GetGlobalShaderMap(FeatureLevel);
// Set the new shaders
TShaderMapRef<TOneColorVS<true> > VertexShader(ShaderMap);
FOneColorPS* PixelShader = NULL;
// Set the shader to write to the appropriate number of render targets
// On AMD PC hardware, outputting to a color index in the shader without a matching render target set has a significant performance hit
if (NumClearColors <= 1)
{
TShaderMapRef<TOneColorPixelShaderMRT<1> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 2)
{
TShaderMapRef<TOneColorPixelShaderMRT<2> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 3)
{
TShaderMapRef<TOneColorPixelShaderMRT<3> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 4)
{
TShaderMapRef<TOneColorPixelShaderMRT<4> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 5)
{
TShaderMapRef<TOneColorPixelShaderMRT<5> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 6)
{
TShaderMapRef<TOneColorPixelShaderMRT<6> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 7)
{
TShaderMapRef<TOneColorPixelShaderMRT<7> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
else if (NumClearColors == 8)
{
TShaderMapRef<TOneColorPixelShaderMRT<8> > MRTPixelShader(ShaderMap);
PixelShader = *MRTPixelShader;
}
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, GClearMRTBoundShaderState[FMath::Max(NumClearColors - 1, 0)], GetVertexDeclarationFVector4(), *VertexShader, PixelShader);
FLinearColor ShaderClearColors[MaxSimultaneousRenderTargets];
FMemory::Memzero(ShaderClearColors);
for (int32 i = 0; i < NumClearColors; i++)
{
ShaderClearColors[i] = ClearColorArray[i];
}
SetShaderValueArray(RHICmdList, PixelShader->GetPixelShader(),PixelShader->ColorParameter,ShaderClearColors,NumClearColors);
{
// Draw a fullscreen quad
/*if(ExcludeRect.Width() > 0 && ExcludeRect.Height() > 0)
{
// with a hole in it (optimization in case the hardware has non constant clear performance)
FVector4 OuterVertices[4];
OuterVertices[0].Set( -1.0f, 1.0f, Depth, 1.0f );
OuterVertices[1].Set( 1.0f, 1.0f, Depth, 1.0f );
OuterVertices[2].Set( 1.0f, -1.0f, Depth, 1.0f );
OuterVertices[3].Set( -1.0f, -1.0f, Depth, 1.0f );
float InvViewWidth = 1.0f / Viewport.Width;
float InvViewHeight = 1.0f / Viewport.Height;
FVector4 FractionRect = FVector4(ExcludeRect.Min.X * InvViewWidth, ExcludeRect.Min.Y * InvViewHeight, (ExcludeRect.Max.X - 1) * InvViewWidth, (ExcludeRect.Max.Y - 1) * InvViewHeight);
FVector4 InnerVertices[4];
InnerVertices[0].Set( FMath::Lerp(-1.0f, 1.0f, FractionRect.X), FMath::Lerp(1.0f, -1.0f, FractionRect.Y), Depth, 1.0f );
InnerVertices[1].Set( FMath::Lerp(-1.0f, 1.0f, FractionRect.Z), FMath::Lerp(1.0f, -1.0f, FractionRect.Y), Depth, 1.0f );
InnerVertices[2].Set( FMath::Lerp(-1.0f, 1.0f, FractionRect.Z), FMath::Lerp(1.0f, -1.0f, FractionRect.W), Depth, 1.0f );
InnerVertices[3].Set( FMath::Lerp(-1.0f, 1.0f, FractionRect.X), FMath::Lerp(1.0f, -1.0f, FractionRect.W), Depth, 1.0f );
FVector4 Vertices[10];
Vertices[0] = OuterVertices[0];
Vertices[1] = InnerVertices[0];
Vertices[2] = OuterVertices[1];
Vertices[3] = InnerVertices[1];
Vertices[4] = OuterVertices[2];
Vertices[5] = InnerVertices[2];
Vertices[6] = OuterVertices[3];
Vertices[7] = InnerVertices[3];
Vertices[8] = OuterVertices[0];
Vertices[9] = InnerVertices[0];
DrawPrimitiveUP(RHICmdList, PT_TriangleStrip, 8, Vertices, sizeof(Vertices[0]) );
}
else*/
{
// without a hole
FVector4 Vertices[4];
Vertices[0].Set( -1.0f, 1.0f, Depth, 1.0f );
Vertices[1].Set( 1.0f, 1.0f, Depth, 1.0f );
Vertices[2].Set( -1.0f, -1.0f, Depth, 1.0f );
Vertices[3].Set( 1.0f, -1.0f, Depth, 1.0f );
DrawPrimitiveUP(RHICmdList, PT_TriangleStrip, 2, Vertices, sizeof(Vertices[0]));
}
}
}
/**
* Clears view where Z is still at the maximum value (ie no geometry rendered)
*/
void FDeferredShadingSceneRenderer::ClearGBufferAtMaxZ()
{
// Assumes BeginRenderingSceneColor() has been called before this function
SCOPED_DRAW_EVENT(ClearGBufferAtMaxZ, DEC_SCENE_ITEMS);
// Clear the G Buffer render targets
const bool bClearBlack = Views[0].Family->EngineShowFlags.ShaderComplexity || Views[0].Family->EngineShowFlags.StationaryLightOverlap;
// Same clear color from RHIClearMRT
FLinearColor ClearColors[6] =
{bClearBlack ? FLinearColor(0,0,0,0) : Views[0].BackgroundColor, FLinearColor(0.5f,0.5f,0.5f,0), FLinearColor(0,0,0,1), FLinearColor(0,0,0,0), FLinearColor(0,1,1,1), FLinearColor(1,1,1,1)};
uint32 NumActiveRenderTargets = GSceneRenderTargets.GetNumGBufferTargets();
TShaderMapRef<FOneColorVS> VertexShader(GetGlobalShaderMap());
FOneColorPS* PixelShader = NULL;
// Assume for now all code path supports SM4, otherwise render target numbers are changed
switch(NumActiveRenderTargets)
{
case 5:
{
TShaderMapRef<TOneColorPixelShaderMRT<5> > MRTPixelShader(GetGlobalShaderMap());
PixelShader = *MRTPixelShader;
}
break;
case 6:
{
TShaderMapRef<TOneColorPixelShaderMRT<6> > MRTPixelShader(GetGlobalShaderMap());
PixelShader = *MRTPixelShader;
}
break;
default:
case 1:
{
TShaderMapRef<TOneColorPixelShaderMRT<1> > MRTPixelShader(GetGlobalShaderMap());
PixelShader = *MRTPixelShader;
}
break;
}
SetGlobalBoundShaderState(GClearMRTBoundShaderState[NumActiveRenderTargets - 1], GetVertexDeclarationFVector4(), *VertexShader, PixelShader);
// Opaque rendering, depth test but no depth writes
RHISetRasterizerState( TStaticRasterizerState<FM_Solid,CM_None>::GetRHI() );
RHISetBlendState(TStaticBlendStateWriteMask<>::GetRHI());
// Note, this is a reversed Z depth surface, using CF_GreaterEqual.
RHISetDepthStencilState(TStaticDepthStencilState<false,CF_GreaterEqual>::GetRHI());
// Clear each viewport by drawing background color at MaxZ depth
for(int32 ViewIndex = 0;ViewIndex < Views.Num();ViewIndex++)
{
SCOPED_CONDITIONAL_DRAW_EVENTF(EventView, Views.Num() > 1, DEC_SCENE_ITEMS, TEXT("ClearView%d"), ViewIndex);
FViewInfo& View = Views[ViewIndex];
// Set viewport for this view
RHISetViewport(View.ViewRect.Min.X, View.ViewRect.Min.Y, 0, View.ViewRect.Max.X, View.ViewRect.Max.Y, 1);
// Setup PS
SetShaderValueArray(PixelShader->GetPixelShader(),PixelShader->ColorParameter, ClearColors, NumActiveRenderTargets);
// Render quad
RHIDrawPrimitiveUP(PT_TriangleStrip, 2, ClearQuadVertices, sizeof(ClearQuadVertices[0]) );
}
}