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https://github.com/gnif/LookingGlass.git
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91b0cba145
This fixes a rounding issue on certain hardware (NVidia) which actually implement mediump as half precision (16-bit) float. It's safe to assume `highp` is available as if the GPU does not support it, then the shader compiler will try to find a lower precision that is supported by the GPU
45 lines
1.1 KiB
GLSL
45 lines
1.1 KiB
GLSL
#version 300 es
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precision highp float;
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#include "compat.h"
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in vec2 fragCoord;
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out vec4 fragColor;
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uniform sampler2D texture;
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uniform vec2 uOutRes;
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uniform uvec4 uConsts[4];
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#define A_GPU 1
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#define A_GLSL 1
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#define A_FULL 1
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#include "ffx_a.h"
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#define FSR_EASU_F 1
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vec4 _textureGather(sampler2D tex, vec2 uv, int comp)
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{
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vec2 res = vec2(textureSize(tex, 0));
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ivec2 p = ivec2((uv * res) - 0.5f);
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vec4 c0 = texelFetchOffset(tex, p, 0, ivec2(0,1));
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vec4 c1 = texelFetchOffset(tex, p, 0, ivec2(1,1));
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vec4 c2 = texelFetchOffset(tex, p, 0, ivec2(1,0));
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vec4 c3 = texelFetchOffset(tex, p, 0, ivec2(0,0));
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return vec4(c0[comp], c1[comp], c2[comp],c3[comp]);
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}
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AF4 FsrEasuRF(AF2 p){return AF4(_textureGather(texture, p, 0));}
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AF4 FsrEasuGF(AF2 p){return AF4(_textureGather(texture, p, 1));}
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AF4 FsrEasuBF(AF2 p){return AF4(_textureGather(texture, p, 2));}
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#include "ffx_fsr1.h"
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void main()
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{
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vec3 color;
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uvec2 point = uvec2(fragCoord * uOutRes);
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FsrEasuF(color, point, uConsts[0], uConsts[1], uConsts[2], uConsts[3]);
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fragColor = vec4(color.rgb, 1);
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}
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