mirror of
https://github.com/gnif/LookingGlass.git
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68 lines
1.2 KiB
GLSL
68 lines
1.2 KiB
GLSL
#version 300 es
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precision mediump float;
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in vec2 iFragCoord;
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out vec4 fragColor;
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uniform sampler2D iChannel0;
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uniform uvec2 uInRes[8];
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uniform uvec2 uOutRes;
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uniform float uSharpness;
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// the following are not available until verion 400 or later
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// so we implement our own versions of them
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uint bitfieldExtract(uint val, int off, int size)
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{
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uint mask = uint((1 << size) - 1);
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return uint(val >> off) & mask;
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}
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uint bitfieldInsert(uint a, uint b, int c, int d)
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{
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uint mask = ~(0xffffffffu << d) << c;
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mask = ~mask;
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a &= mask;
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return a | (b << c);
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}
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#define A_GPU 1
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#define A_GLSL 1
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#include "ffx_a.h"
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vec3 imageLoad(ivec2 point)
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{
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return texelFetch(iChannel0, point, 0).rgb;
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}
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AF3 CasLoad(ASU2 p)
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{
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return imageLoad(p).rgb;
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}
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void CasInput(inout AF1 r,inout AF1 g,inout AF1 b) {}
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#include "ffx_cas.h"
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void main()
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{
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uvec2 point = uvec2(iFragCoord * vec2(uInRes[0].xy));
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vec4 color;
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vec2 inputResolution = vec2(uInRes[0]);
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vec2 outputResolution = vec2(uOutRes);
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uvec4 const0;
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uvec4 const1;
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CasSetup(const0, const1, uSharpness,
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inputResolution.x, inputResolution.y,
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outputResolution.x, outputResolution.y);
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CasFilter(
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fragColor.r, fragColor.g, fragColor.b,
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point,
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const0, const1,
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true);
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}
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