dmcdiar
66 lines
1.7 KiB
Plaintext
66 lines
1.7 KiB
Plaintext
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#include <scenesrg.srgi>
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#include <viewsrg.srgi>
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#include <Atom/Features/PostProcessing/FullscreenVertex.azsli>
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#include <Atom/Features/SrgSemantics.azsli>
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#include <Atom/RPI/Math.azsli>
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#include "ReflectionScreenSpaceBlurCommon.azsli"
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ShaderResourceGroup PassSrg : SRG_PerPass
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{
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Texture2DMS<float> m_depth;
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RWTexture2D<float4> m_input;
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RWTexture2D<float4> m_output;
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uint m_imageWidth;
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uint m_imageHeight;
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float m_outputScale;
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}
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#include <Atom/RPI/ShaderResourceGroups/DefaultDrawSrg.azsli>
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// Pixel Shader
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struct PSOutput
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{
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float4 m_color : SV_Target0;
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float m_depth : SV_Depth;
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};
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PSOutput MainPS(VSOutput IN)
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{
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// vertical blur uses coordinates from the mip0 input image
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uint2 halfResCoords = IN.m_position.xy * PassSrg::m_outputScale;
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float3 result = GaussianFilter(halfResCoords, TexelOffsetsV, PassSrg::m_input);
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// downsample depth, using fullscreen image coordinates
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float downsampledDepth = 0;
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if (PassSrg::m_input[halfResCoords].w > 0.0f)
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{
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uint2 fullScreenCoords = halfResCoords * 2;
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for (int y = -2; y < 2; ++y)
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{
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for (int x = -2; x < 2; ++x)
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{
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float depth = PassSrg::m_depth.Load(fullScreenCoords + int2(x, y), 0).r;
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if (depth > downsampledDepth)
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{
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downsampledDepth = depth;
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}
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}
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}
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}
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PSOutput OUT;
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OUT.m_color = float4(result, 1.0f);
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OUT.m_depth = downsampledDepth;
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return OUT;
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}
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