mirror of
https://github.com/libretro/RetroArch
synced 2025-01-29 09:32:52 +00:00
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2014-2018 - Ali Bouhlel
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#define SRC(...) #__VA_ARGS__
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SRC(
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Texture2D<float4> t0;
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RWTexture2D<float4> u0;
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sampler s0;
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cbuffer CBr
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{
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uint src_level;
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float2 texel_size;
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}
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static float w[4]= {0.090845, 0.409155, 0.409155, 0.090845};
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[numthreads(8, 8, 1)]
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void CSMain(uint3 DTid : SV_DispatchThreadID)
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{
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int i;
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int j;
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float4 c = 0.0f;
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for (i = 0; i < 4; i++)
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for (j = 0; j < 4; j++)
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{
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float4 c0 = t0.SampleLevel(s0, texel_size * (DTid.xy + 0.5f * float2(i - 0.5f,j - 0.5f)), src_level);
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c0.rgb *= c0.a;
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c += w[i] * w[j] * c0;
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}
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c.rgb /= c.a;
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u0[DTid.xy] = c;
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return;
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}
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)
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