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1. Use `r.SSR.TiledComposite 1` to enable tiled SSR (Default off). 2. Use `r.SSR.TiledComposite.Visualize 1` to visualize the current tiled SSR when SSR is enabled. 3. Add MinSpecular(0.01f) and MaxRoughness(0.3f) to cull tiles. #rb sebastien.hillaire, jeremy.moore [CL 29293956 by tiantian xie in ue5-main branch]
24 lines
843 B
Plaintext
24 lines
843 B
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved.
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/*================================================================================================
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ScreenSpaceReflectionTileCommons.ush:
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=================================================================================================*/
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#pragma once
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#ifndef SSR_TILE_SIZE_XY
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#define SSR_TILE_SIZE_XY (8U)
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#endif
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//#if SSR_TILE_SIZE_XY != 8U
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// #error SSR_TILE_SIZE_XY is currently designed to be 8U.
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//#endif
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bool IsSSRTileUsed(uint2 PixelPos, uint2 InSSRTiledViewRes, StructuredBuffer<uint> InSSRTileMaskBuffer)
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{
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uint2 SSRTileIndex = PixelPos / SSR_TILE_SIZE_XY;
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uint MaskLinearIndex = InSSRTiledViewRes.x * SSRTileIndex.y + SSRTileIndex.x;
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uint Mask = 1u << (MaskLinearIndex % 32u);
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bool bTileUsed = (InSSRTileMaskBuffer[MaskLinearIndex / 32u] & Mask) != 0;
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return bTileUsed;
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} |