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4268a6dfa1
#jira UE-215898 #rb christopher.waters [CL 34045035 by yuriy odonnell in ue5-main branch]
49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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RayGenShaderUtils.h: Utilities for ray generation shaders shaders.
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=============================================================================*/
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#pragma once
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#include "RHIDefinitions.h"
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#if RHI_RAYTRACING
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#include "RenderResource.h"
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#include "RenderGraphUtils.h"
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#include "PipelineStateCache.h"
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#include "ShaderParameters.h"
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/** All utils for ray generation shaders. */
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struct FRayGenShaderUtils
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{
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/** Dispatch a ray generation shader to render graph builder with its parameters. */
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template<typename TShaderClass>
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static inline void AddRayTraceDispatchPass(
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FRDGBuilder& GraphBuilder,
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FRDGEventName&& PassName,
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const TShaderRef<TShaderClass>& RayGenerationShader,
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typename TShaderClass::FParameters* Parameters,
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FIntPoint Resolution)
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{
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ClearUnusedGraphResources(RayGenerationShader, Parameters);
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GraphBuilder.AddPass(
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Forward<FRDGEventName>(PassName),
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Parameters,
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ERDGPassFlags::Compute,
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[RayGenerationShader, Parameters, Resolution](FRHICommandList& RHICmdList)
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{
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FRHIBatchedShaderParameters& GlobalResources = RHICmdList.GetScratchShaderParameters();
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SetShaderParameters(GlobalResources, RayGenerationShader, *Parameters);
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FRayTracingPipelineStateInitializer Initializer;
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FRHIRayTracingShader* RayGenShaderTable[] = { RayGenerationShader.GetRayTracingShader() };
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Initializer.SetRayGenShaderTable(RayGenShaderTable);
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FRayTracingPipelineState* Pipeline = PipelineStateCache::GetAndOrCreateRayTracingPipelineState(RHICmdList, Initializer);
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RHICmdList.RayTraceDispatch(Pipeline, RayGenerationShader.GetRayTracingShader(), GlobalResources, Resolution.X, Resolution.Y);
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});
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}
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};
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#endif //RHI_RAYTRACINGO
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