Turánszki János
43 lines
1.1 KiB
HLSL
43 lines
1.1 KiB
HLSL
#include "globals.hlsli"
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#include "ShaderInterop_Postprocess.h"
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Texture2D<float2> tilemax_horizontal : register(t0);
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Texture2D<float2> tilemin_horizontal : register(t1);
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RWTexture2D<float2> tilemax : register(u0);
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RWTexture2D<float2> tilemin : register(u1);
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[numthreads(POSTPROCESS_BLOCKSIZE, POSTPROCESS_BLOCKSIZE, 1)]
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void main(uint3 DTid : SV_DispatchThreadID)
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{
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const uint2 tile_upperleft = uint2(DTid.x, DTid.y * MOTIONBLUR_TILESIZE);
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float max_magnitude = 0;
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float2 max_velocity = 0;
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float min_magnitude = 100000;
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float2 min_velocity = 100000;
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[loop]
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for (uint i = 0; i < MOTIONBLUR_TILESIZE; ++i)
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{
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const uint2 pixel = uint2(tile_upperleft.x, tile_upperleft.y + i);
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float2 velocity = tilemax_horizontal[pixel];
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float magnitude = length(velocity);
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if (magnitude > max_magnitude)
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{
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max_magnitude = magnitude;
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max_velocity = velocity;
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}
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velocity = tilemin_horizontal[pixel];
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magnitude = length(velocity);
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if (magnitude < min_magnitude)
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{
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min_magnitude = magnitude;
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min_velocity = velocity;
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}
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}
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tilemax[DTid.xy] = max_velocity;
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tilemin[DTid.xy] = min_velocity;
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}
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