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https://github.com/izzy2lost/UnrealEngineUWP.git
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ef2256631b
* reduced order of SH (faster but a bit more blurry) * DirectionalOcclusion (disabled by default, can be enabled in PostProcessSettings, affects SkyLight and ReflectionEnvironments but not AmbientCube) * Material BlockGI feature * Spotlight support * Uses AsyncCompute on XboxOne as optimization (order is not optimized yet) [CL 2553823 by Martin Mittring in Main branch]
59 lines
1.9 KiB
Plaintext
59 lines
1.9 KiB
Plaintext
//-----------------------------------------------------------------------------
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// File: LPVInject_GenerateVplLists.usf
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//
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// Summary: Compute shader to generate linked lists of
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// VPLs from an RSM for LPV injection.
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//
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// Runs once per light per LPV
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//
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// Created: 2013-03-01
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//
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// Author: mailto:benwood@microsoft.com
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//
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// Copyright (C) Microsoft. All rights reserved.
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//-----------------------------------------------------------------------------
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/*------------------------------------------------------------------------------
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Compile time parameters:
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------------------------------------------------------------------------------*/
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#include "Common.usf"
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#include "LPVWriteVplCommon.usf"
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#define DEBUG_SHOW_CAMERAPOS 0
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//------------------------------------------------------------------------------
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Texture2D gRsmFluxTex;
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Texture2D gRsmNormalTex;
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Texture2D gRsmDepthTex;
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SamplerState LinearSampler;
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SamplerState PointSampler;
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//------------------------------------------------------------------------------
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[numthreads(8,8,1)]
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void CSGenerateVplLists_LightDirectional(uint3 DTid : SV_DispatchThreadID)
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{
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float4 normalBiasTex = gRsmNormalTex.Load( int3(DTid.xy,0) );
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float3 normal = normalize( normalBiasTex.xyz * 2.0f - 1.0f );
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float3 flux = gRsmFluxTex.Load( int3(DTid.xy,0) );
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float depth = gRsmDepthTex.Load( int3(DTid.xy,0) ).x;
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float primitiveBiasMultiplier = normalBiasTex.w * 32.0f;
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float biasFactor = min( 1.0f, 1.0f/primitiveBiasMultiplier );
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flux *= biasFactor;
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float2 texCoord = float2( DTid.xy ) * LpvWrite.RsmPixelToTexcoordMultiplier;
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float3 rsmPos = float3( texCoord, depth );
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float3 worldPos = mul( float4(rsmPos,1), LpvWrite.mRsmToWorld ).xyz;
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worldPos += normal * LpvWrite.VplInjectionBias * primitiveBiasMultiplier;
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AddToVplList( worldPos, flux*LpvWrite.mLightColour, normal, false );
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}
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