/**
* Sets the filter shaders with the provided filter samples.
* @param SamplerStateRHI - The sampler state to use for the source texture.
* @param FilterTextureRHI - The source texture.
* @param AdditiveTextureRHI - The additional source texture, used in CombineMethod=1
* @param CombineMethodInt 0:weighted filtering, 1: weighted filtering + additional texture, 2: max magnitude
* @param SampleOffsets - A pointer to an array of NumSamples UV offsets
* @param SampleWeights - A pointer to an array of NumSamples 4-vector weights
* @param NumSamples - The number of samples used by the filter.
* @param OutVertexShader - The vertex shader used for the filter
*/
void SetFilterShaders(
FRHICommandListImmediate& RHICmdList,
ERHIFeatureLevel::Type FeatureLevel,
FSamplerStateRHIParamRef SamplerStateRHI,
FTextureRHIParamRef FilterTextureRHI,
FTextureRHIParamRef AdditiveTextureRHI,
uint32 CombineMethodInt,
FVector2D* SampleOffsets,
FLinearColor* SampleWeights,
uint32 NumSamples,
FShader** OutVertexShader
)
{
check(CombineMethodInt <= 2);
auto ShaderMap = GetGlobalShaderMap(FeatureLevel);
// A macro to handle setting the filter shader for a specific number of samples.
#define SET_FILTER_SHADER_TYPE(NumSamples) \
case NumSamples: \
{ \
TShaderMapRef<TFilterVS<NumSamples> > VertexShader(ShaderMap); \
*OutVertexShader = *VertexShader; \
if(CombineMethodInt == 0) \
{ \
TShaderMapRef<TFilterPS<NumSamples, 0> > PixelShader(ShaderMap); \
{ \
static FGlobalBoundShaderState BoundShaderState; \
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader); \
} \
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights); \
} \
else if(CombineMethodInt == 1) \
{ \
TShaderMapRef<TFilterPS<NumSamples, 1> > PixelShader(ShaderMap); \
{ \
static FGlobalBoundShaderState BoundShaderState; \
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader); \
} \
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights); \
} \
else\
{ \
TShaderMapRef<TFilterPS<NumSamples, 2> > PixelShader(ShaderMap); \
{ \
static FGlobalBoundShaderState BoundShaderState; \
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader); \
} \
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights); \
} \
VertexShader->SetParameters(RHICmdList, SampleOffsets); \
break; \
};
// Set the appropriate filter shader for the given number of samples.
switch(NumSamples)
{
SET_FILTER_SHADER_TYPE(1);
SET_FILTER_SHADER_TYPE(2);
SET_FILTER_SHADER_TYPE(3);
SET_FILTER_SHADER_TYPE(4);
SET_FILTER_SHADER_TYPE(5);
SET_FILTER_SHADER_TYPE(6);
SET_FILTER_SHADER_TYPE(7);
SET_FILTER_SHADER_TYPE(8);
SET_FILTER_SHADER_TYPE(9);
SET_FILTER_SHADER_TYPE(10);
SET_FILTER_SHADER_TYPE(11);
SET_FILTER_SHADER_TYPE(12);
SET_FILTER_SHADER_TYPE(13);
SET_FILTER_SHADER_TYPE(14);
SET_FILTER_SHADER_TYPE(15);
SET_FILTER_SHADER_TYPE(16);
SET_FILTER_SHADER_TYPE(17);
SET_FILTER_SHADER_TYPE(18);
SET_FILTER_SHADER_TYPE(19);
SET_FILTER_SHADER_TYPE(20);
SET_FILTER_SHADER_TYPE(21);
SET_FILTER_SHADER_TYPE(22);
SET_FILTER_SHADER_TYPE(23);
SET_FILTER_SHADER_TYPE(24);
SET_FILTER_SHADER_TYPE(25);
SET_FILTER_SHADER_TYPE(26);
SET_FILTER_SHADER_TYPE(27);
SET_FILTER_SHADER_TYPE(28);
SET_FILTER_SHADER_TYPE(29);
SET_FILTER_SHADER_TYPE(30);
SET_FILTER_SHADER_TYPE(31);
SET_FILTER_SHADER_TYPE(32);
default:
UE_LOG(LogRenderer, Fatal,TEXT("Invalid number of samples: %u"),NumSamples);
}
#undef SET_FILTER_SHADER_TYPE
}
/**
* Sets the filter shaders with the provided filter samples.
* @param SamplerStateRHI - The sampler state to use for the source texture.
* @param FilterTextureRHI - The source texture.
* @param AdditiveTextureRHI - The additional source texture, used in CombineMethod=1
* @param CombineMethodInt 0:weighted filtering, 1: weighted filtering + additional texture, 2: max magnitude
* @param SampleOffsets - A pointer to an array of NumSamples UV offsets
* @param SampleWeights - A pointer to an array of NumSamples 4-vector weights
* @param NumSamples - The number of samples used by the filter.
* @param OutVertexShader - The vertex shader used for the filter
*/
void SetFilterShaders(
FRHICommandListImmediate& RHICmdList,
ERHIFeatureLevel::Type FeatureLevel,
FSamplerStateRHIParamRef SamplerStateRHI,
FTextureRHIParamRef FilterTextureRHI,
FTextureRHIParamRef AdditiveTextureRHI,
uint32 CombineMethodInt,
FVector2D* SampleOffsets,
FLinearColor* SampleWeights,
uint32 NumSamples,
FShader** OutVertexShader
)
{
check(CombineMethodInt <= 2);
check(NumSamples <= MAX_FILTER_SAMPLES && NumSamples > 0);
auto ShaderMap = GetGlobalShaderMap(FeatureLevel);
const auto DynamicNumSample = CVarLoopMode.GetValueOnRenderThread();
if ((NumSamples > MAX_FILTER_COMPILE_TIME_SAMPLES && DynamicNumSample != 0) || (DynamicNumSample == 2))
{
// there is to many samples, so we use the dynamic sample count shader
TShaderMapRef<FPostProcessVS> VertexShader(ShaderMap);
*OutVertexShader = *VertexShader;
if(CombineMethodInt == 0)
{
TShaderMapRef<TFilterPS<0, 0> > PixelShader(ShaderMap);
{
static FGlobalBoundShaderState BoundShaderState;
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
}
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights, SampleOffsets, NumSamples);
}
else if(CombineMethodInt == 1)
{
TShaderMapRef<TFilterPS<0, 1> > PixelShader(ShaderMap);
{
static FGlobalBoundShaderState BoundShaderState;
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
}
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights, SampleOffsets, NumSamples);
}
else\
{
TShaderMapRef<TFilterPS<0, 2> > PixelShader(ShaderMap);
{
static FGlobalBoundShaderState BoundShaderState;
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
}
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights, SampleOffsets, NumSamples);
}
return;
}
// A macro to handle setting the filter shader for a specific number of samples.
#define SET_FILTER_SHADER_TYPE(CompileTimeNumSamples) \
case CompileTimeNumSamples: \
{ \
TShaderMapRef<TFilterVS<CompileTimeNumSamples> > VertexShader(ShaderMap); \
*OutVertexShader = *VertexShader; \
if(CombineMethodInt == 0) \
{ \
TShaderMapRef<TFilterPS<CompileTimeNumSamples, 0> > PixelShader(ShaderMap); \
{ \
static FGlobalBoundShaderState BoundShaderState; \
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader); \
} \
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights, SampleOffsets, NumSamples); \
} \
else if(CombineMethodInt == 1) \
{ \
TShaderMapRef<TFilterPS<CompileTimeNumSamples, 1> > PixelShader(ShaderMap); \
{ \
static FGlobalBoundShaderState BoundShaderState; \
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader); \
} \
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights, SampleOffsets, NumSamples); \
} \
else\
{ \
TShaderMapRef<TFilterPS<CompileTimeNumSamples, 2> > PixelShader(ShaderMap); \
{ \
static FGlobalBoundShaderState BoundShaderState; \
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader); \
} \
PixelShader->SetParameters(RHICmdList, SamplerStateRHI, FilterTextureRHI, AdditiveTextureRHI, SampleWeights, SampleOffsets, NumSamples); \
} \
VertexShader->SetParameters(RHICmdList, SampleOffsets); \
break; \
};
check(NumSamples <= MAX_FILTER_COMPILE_TIME_SAMPLES);
// Set the appropriate filter shader for the given number of samples.
switch(NumSamples)
{
SET_FILTER_SHADER_TYPE(1);
SET_FILTER_SHADER_TYPE(2);
SET_FILTER_SHADER_TYPE(3);
SET_FILTER_SHADER_TYPE(4);
SET_FILTER_SHADER_TYPE(5);
SET_FILTER_SHADER_TYPE(6);
SET_FILTER_SHADER_TYPE(7);
SET_FILTER_SHADER_TYPE(8);
SET_FILTER_SHADER_TYPE(9);
SET_FILTER_SHADER_TYPE(10);
SET_FILTER_SHADER_TYPE(11);
SET_FILTER_SHADER_TYPE(12);
SET_FILTER_SHADER_TYPE(13);
SET_FILTER_SHADER_TYPE(14);
SET_FILTER_SHADER_TYPE(15);
SET_FILTER_SHADER_TYPE(16);
SET_FILTER_SHADER_TYPE(17);
SET_FILTER_SHADER_TYPE(18);
SET_FILTER_SHADER_TYPE(19);
SET_FILTER_SHADER_TYPE(20);
SET_FILTER_SHADER_TYPE(21);
SET_FILTER_SHADER_TYPE(22);
SET_FILTER_SHADER_TYPE(23);
SET_FILTER_SHADER_TYPE(24);
SET_FILTER_SHADER_TYPE(25);
SET_FILTER_SHADER_TYPE(26);
SET_FILTER_SHADER_TYPE(27);
SET_FILTER_SHADER_TYPE(28);
SET_FILTER_SHADER_TYPE(29);
SET_FILTER_SHADER_TYPE(30);
SET_FILTER_SHADER_TYPE(31);
SET_FILTER_SHADER_TYPE(32);
default:
UE_LOG(LogRenderer, Fatal,TEXT("Invalid number of samples: %u"),NumSamples);
}
#undef SET_FILTER_SHADER_TYPE
}
