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48 lines
1.9 KiB
C++
48 lines
1.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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PrimitiveDistanceAccuracyRendering.cpp: Contains definitions for rendering the viewmode.
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=============================================================================*/
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#include "PrimitiveDistanceAccuracyRendering.h"
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#include "PrimitiveSceneProxy.h"
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#include "EngineGlobals.h"
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#include "MeshBatch.h"
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#include "Engine/Engine.h"
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#if !(UE_BUILD_SHIPPING || UE_BUILD_TEST)
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IMPLEMENT_MATERIAL_SHADER_TYPE(,FPrimitiveDistanceAccuracyPS,TEXT("/Engine/Private/PrimitiveDistanceAccuracyPixelShader.usf"),TEXT("Main"),SF_Pixel);
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void FPrimitiveDistanceAccuracyInterface::GetDebugViewModeShaderBindings(
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const FDebugViewModePS& ShaderBase,
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const FPrimitiveSceneProxy* RESTRICT PrimitiveSceneProxy,
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const FMaterialRenderProxy& RESTRICT MaterialRenderProxy,
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const FMaterial& RESTRICT Material,
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EDebugViewShaderMode DebugViewMode,
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const FVector& ViewOrigin,
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int32 VisualizeLODIndex,
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int32 VisualizeElementIndex,
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int32 NumVSInstructions,
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int32 NumPSInstructions,
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int32 ViewModeParam,
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FName ViewModeParamName,
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FMeshDrawSingleShaderBindings& ShaderBindings
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) const
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{
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const FPrimitiveDistanceAccuracyPS& Shader = static_cast<const FPrimitiveDistanceAccuracyPS&>(ShaderBase);
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float CPULogDistance = -1.f;
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#if WITH_EDITORONLY_DATA
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float Distance = 0;
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if (PrimitiveSceneProxy && PrimitiveSceneProxy->GetPrimitiveDistance(VisualizeLODIndex, VisualizeElementIndex, ViewOrigin, Distance))
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{
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CPULogDistance = FMath::Max<float>(0.f, FMath::Log2(FMath::Max<float>(1.f, Distance)));
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}
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#endif
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// Because the streamer use FMath::FloorToFloat, here we need to use -1 to have a useful result.
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ShaderBindings.Add(Shader.CPULogDistanceParameter, CPULogDistance);
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ShaderBindings.Add(Shader.PrimitiveAlphaParameter, (!PrimitiveSceneProxy || PrimitiveSceneProxy->IsSelected()) ? 1.f : .2f);
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}
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#endif // !(UE_BUILD_SHIPPING || UE_BUILD_TEST)
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