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95d19f95b1
#rb graham.wihlidal, rune.stubbe, brian.karis, andrew.lauritzen, jeff.farris [CL 13834854 by Michal Valient in ue5-main branch]
60 lines
2.1 KiB
Plaintext
60 lines
2.1 KiB
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved.
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/**
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* LightmapData.ush
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*/
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#pragma once
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#if VF_USE_PRIMITIVE_SCENE_DATA
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// Must match FPrecomputedLightingUniformParameters in C++
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struct FLightmapSceneData
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{
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float4 StaticShadowMapMasks;
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float4 InvUniformPenumbraSizes;
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float4 LightMapCoordinateScaleBias;
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float4 ShadowMapCoordinateScaleBias;
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float4 LightMapScale[2];
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float4 LightMapAdd[2];
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uint4 LightmapVTPackedPageTableUniform[2];
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uint4 LightmapVTPackedUniform[5];
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};
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// Stride of a single lightmap data entry in float4's, must match C++
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#define LIGHTMAP_SCENE_DATA_STRIDE 15
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// Fetch from scene lightmap data buffer
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FLightmapSceneData GetLightmapData(uint LightmapDataIndex)
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{
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// Note: layout must match FLightmapSceneShaderData in C++
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// Relying on optimizer to remove unused loads
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FLightmapSceneData LightmapData;
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uint LightmapDataBaseOffset = LightmapDataIndex * LIGHTMAP_SCENE_DATA_STRIDE;
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LightmapData.StaticShadowMapMasks = View.LightmapSceneData[LightmapDataBaseOffset + 0];
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LightmapData.InvUniformPenumbraSizes = View.LightmapSceneData[LightmapDataBaseOffset + 1];
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LightmapData.LightMapCoordinateScaleBias = View.LightmapSceneData[LightmapDataBaseOffset + 2];
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LightmapData.ShadowMapCoordinateScaleBias = View.LightmapSceneData[LightmapDataBaseOffset + 3];
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LightmapData.LightMapScale[0] = View.LightmapSceneData[LightmapDataBaseOffset + 4];
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LightmapData.LightMapScale[1] = View.LightmapSceneData[LightmapDataBaseOffset + 5];
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LightmapData.LightMapAdd[0] = View.LightmapSceneData[LightmapDataBaseOffset + 6];
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LightmapData.LightMapAdd[1] = View.LightmapSceneData[LightmapDataBaseOffset + 7];
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LightmapData.LightmapVTPackedPageTableUniform[0] = asuint(View.LightmapSceneData[LightmapDataBaseOffset + 8]);
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LightmapData.LightmapVTPackedPageTableUniform[1] = asuint(View.LightmapSceneData[LightmapDataBaseOffset + 9]);
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UNROLL
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for (uint i = 0u; i < 5u; ++i)
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{
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LightmapData.LightmapVTPackedUniform[i] = asuint(View.LightmapSceneData[LightmapDataBaseOffset + 10 + i]);
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}
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return LightmapData;
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}
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#else
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// Route to uniform buffer
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#define GetLightmapData(x) PrecomputedLightingBuffer
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#endif |