FShader* FGlobalShaderType::FinishCompileShader(const FShaderCompileJob& CurrentJob)
{
if (CurrentJob.bSucceeded)
{
// Reuse an existing resource with the same key or create a new one based on the compile output
// This allows FShaders to share compiled bytecode and RHI shader references
FShaderResource* Resource = FShaderResource::FindOrCreateShaderResource(CurrentJob.Output);
check(Resource);
// Find a shader with the same key in memory
FShader* Shader = CurrentJob.ShaderType->FindShaderById(FShaderId(GGlobalShaderMapHash, NULL, CurrentJob.ShaderType, CurrentJob.Input.Target));
// There was no shader with the same key so create a new one with the compile output, which will bind shader parameters
if (!Shader)
{
Shader = (*ConstructCompiledRef)(CompiledShaderInitializerType(this, CurrentJob.Output, Resource, GGlobalShaderMapHash, NULL));
CurrentJob.Output.ParameterMap.VerifyBindingsAreComplete(GetName(), (EShaderFrequency)CurrentJob.Output.Target.Frequency, CurrentJob.VFType);
}
return Shader;
}
else
{
return NULL;
}
}
/**
* Either creates a new instance of this type or returns an equivalent existing shader.
* @param Material - The material to link the shader with.
* @param CurrentJob - Compile job that was enqueued by BeginCompileShader.
*/
FShader* FMeshMaterialShaderType::FinishCompileShader(
const FUniformExpressionSet& UniformExpressionSet,
const FSHAHash& MaterialShaderMapHash,
const FShaderCompileJob& CurrentJob,
const FShaderPipelineType* ShaderPipelineType,
const FString& InDebugDescription)
{
check(CurrentJob.bSucceeded);
check(CurrentJob.VFType);
FShaderType* SpecificType = CurrentJob.ShaderType->LimitShaderResourceToThisType() ? CurrentJob.ShaderType : NULL;
// Reuse an existing resource with the same key or create a new one based on the compile output
// This allows FShaders to share compiled bytecode and RHI shader references
FShaderResource* Resource = FShaderResource::FindOrCreateShaderResource(CurrentJob.Output, SpecificType);
if (ShaderPipelineType && !ShaderPipelineType->ShouldOptimizeUnusedOutputs())
{
// If sharing shaders in this pipeline, remove it from the type/id so it uses the one in the shared shadermap list
ShaderPipelineType = nullptr;
}
// Find a shader with the same key in memory
FShader* Shader = CurrentJob.ShaderType->FindShaderById(FShaderId(MaterialShaderMapHash, ShaderPipelineType, CurrentJob.VFType, CurrentJob.ShaderType, CurrentJob.Input.Target));
// There was no shader with the same key so create a new one with the compile output, which will bind shader parameters
if (!Shader)
{
Shader = (*ConstructCompiledRef)(CompiledShaderInitializerType(this, CurrentJob.Output, Resource, UniformExpressionSet, MaterialShaderMapHash, InDebugDescription, ShaderPipelineType, CurrentJob.VFType));
CurrentJob.Output.ParameterMap.VerifyBindingsAreComplete(GetName(), (EShaderFrequency)CurrentJob.Output.Target.Frequency, CurrentJob.VFType);
}
return Shader;
}
