FMaterialShader::FMaterialShader(const FMaterialShaderType::CompiledShaderInitializerType& Initializer)
: FShader(Initializer)
, DebugUniformExpressionSet(Initializer.UniformExpressionSet)
, DebugDescription(Initializer.DebugDescription)
{
check(!DebugDescription.IsEmpty());
// Bind the material uniform buffer parameter.
MaterialUniformBuffer.Bind(Initializer.ParameterMap,TEXT("Material"));
for (int32 CollectionIndex = 0; CollectionIndex < Initializer.UniformExpressionSet.ParameterCollections.Num(); CollectionIndex++)
{
FShaderUniformBufferParameter CollectionParameter;
CollectionParameter.Bind(Initializer.ParameterMap,*FString::Printf(TEXT("MaterialCollection%u"), CollectionIndex));
ParameterCollectionUniformBuffers.Add(CollectionParameter);
}
for (int32 Index = 0; Index < Initializer.UniformExpressionSet.PerFrameUniformScalarExpressions.Num(); Index++)
{
FShaderParameter Parameter;
Parameter.Bind(Initializer.ParameterMap, *FString::Printf(TEXT("UE_Material_PerFrameScalarExpression%u"), Index));
PerFrameScalarExpressions.Add(Parameter);
}
for (int32 Index = 0; Index < Initializer.UniformExpressionSet.PerFrameUniformVectorExpressions.Num(); Index++)
{
FShaderParameter Parameter;
Parameter.Bind(Initializer.ParameterMap, *FString::Printf(TEXT("UE_Material_PerFrameVectorExpression%u"), Index));
PerFrameVectorExpressions.Add(Parameter);
}
for (int32 Index = 0; Index < Initializer.UniformExpressionSet.PerFramePrevUniformScalarExpressions.Num(); Index++)
{
FShaderParameter Parameter;
Parameter.Bind(Initializer.ParameterMap, *FString::Printf(TEXT("UE_Material_PerFramePrevScalarExpression%u"), Index));
PerFramePrevScalarExpressions.Add(Parameter);
}
for (int32 Index = 0; Index < Initializer.UniformExpressionSet.PerFramePrevUniformVectorExpressions.Num(); Index++)
{
FShaderParameter Parameter;
Parameter.Bind(Initializer.ParameterMap, *FString::Printf(TEXT("UE_Material_PerFramePrevVectorExpression%u"), Index));
PerFramePrevVectorExpressions.Add(Parameter);
}
DeferredParameters.Bind(Initializer.ParameterMap);
LightAttenuation.Bind(Initializer.ParameterMap, TEXT("LightAttenuationTexture"));
LightAttenuationSampler.Bind(Initializer.ParameterMap, TEXT("LightAttenuationTextureSampler"));
AtmosphericFogTextureParameters.Bind(Initializer.ParameterMap);
EyeAdaptation.Bind(Initializer.ParameterMap, TEXT("EyeAdaptation"));
// only used it Material has expression that requires PerlinNoiseGradientTexture
PerlinNoiseGradientTexture.Bind(Initializer.ParameterMap,TEXT("PerlinNoiseGradientTexture"));
PerlinNoiseGradientTextureSampler.Bind(Initializer.ParameterMap,TEXT("PerlinNoiseGradientTextureSampler"));
// only used it Material has expression that requires PerlinNoise3DTexture
PerlinNoise3DTexture.Bind(Initializer.ParameterMap,TEXT("PerlinNoise3DTexture"));
PerlinNoise3DTextureSampler.Bind(Initializer.ParameterMap,TEXT("PerlinNoise3DTextureSampler"));
GlobalDistanceFieldParameters.Bind(Initializer.ParameterMap);
}
/**
* Construct a shader from shader compiler output.
*/
FShader::FShader(const CompiledShaderInitializerType& Initializer):
MaterialShaderMapHash(Initializer.MaterialShaderMapHash),
VFType(Initializer.VertexFactoryType),
Type(Initializer.Type),
Target(Initializer.Target),
NumRefs(0),
SetParametersId(0),
Canary(ShaderMagic_Initialized)
{
OutputHash = Initializer.OutputHash;
checkSlow(OutputHash != FSHAHash());
if (Type)
{
// Store off the source hash that this shader was compiled with
// This will be used as part of the shader key in order to identify when shader files have been changed and a recompile is needed
SourceHash = Type->GetSourceHash();
}
if (VFType)
{
// Store off the VF source hash that this shader was compiled with
VFSourceHash = VFType->GetSourceHash();
}
// Bind uniform buffer parameters automatically
for (TLinkedList<FUniformBufferStruct*>::TIterator StructIt(FUniformBufferStruct::GetStructList()); StructIt; StructIt.Next())
{
if (Initializer.ParameterMap.ContainsParameterAllocation(StructIt->GetShaderVariableName()))
{
UniformBufferParameterStructs.Add(*StructIt);
UniformBufferParameters.Add(StructIt->ConstructTypedParameter());
FShaderUniformBufferParameter* Parameter = UniformBufferParameters.Last();
Parameter->Bind(Initializer.ParameterMap, StructIt->GetShaderVariableName(), SPF_Mandatory);
}
}
SetResource(Initializer.Resource);
// Register the shader now that it is valid, so that it can be reused
Register();
}