mirror of
https://bitbucket.org/CPMADevs/cnq3
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63 lines
1.9 KiB
HLSL
63 lines
1.9 KiB
HLSL
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/*
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===========================================================================
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Copyright (C) 2024 Gian 'myT' Schellenbaum
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This file is part of Challenge Quake 3 (CNQ3).
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Challenge Quake 3 is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Challenge Quake 3 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Challenge Quake 3. If not, see <https://www.gnu.org/licenses/>.
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===========================================================================
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*/
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// motion blur velocity tile dilation
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#include "common.hlsli"
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cbuffer RootConstants : register(b0)
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{
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uint inputTextureIndex;
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uint outputTextureIndex;
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uint samplerIndex; // point/clamp
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};
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[numthreads(8, 8, 1)]
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void cs(uint3 dtid : SV_DispatchThreadID)
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{
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uint2 tc = dtid.xy;
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RWTexture2D<float2> outputTexture = ResourceDescriptorHeap[outputTextureIndex];
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uint2 textureSize = GetTextureSize(outputTexture);
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if(any(tc >= textureSize))
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{
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return;
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}
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Texture2D<float2> inputTexture = ResourceDescriptorHeap[inputTextureIndex];
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SamplerState samplerState = SamplerDescriptorHeap[samplerIndex];
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float2 tcShifted = float2(tc) + float2(0.5, 0.5);
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float2 pixelSize = float2(1, 1) / float2(textureSize);
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float2 maxVelocity = float2(0, 0);
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for(int y = -1; y <= 1; y++)
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{
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for(int x = -1; x <= 1; x++)
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{
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float2 tc01 = (tcShifted + float2(x, y)) * pixelSize;
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float2 velocity = inputTexture.SampleLevel(samplerState, tc01, 0);
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maxVelocity = vmax(maxVelocity, velocity);
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}
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}
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outputTexture[tc] = maxVelocity;
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}
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