114 lines
2.5 KiB
Text
114 lines
2.5 KiB
Text
#version 450
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// "LeiFX" shader - Pixel filtering process
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//
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// Copyright (C) 2013-2014 leilei
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//
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// This program is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 of the License, or (at your option)
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// any later version.
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layout(push_constant) uniform Push
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{
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vec4 SourceSize;
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vec4 OriginalSize;
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vec4 OutputSize;
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uint FrameCount;
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float LEIFX_BLURFACTOR;
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} params;
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#pragma parameter LEIFX_BLURFACTOR "LeiFX Blur Factor" 0.69 0.00 1.00 0.01
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#define LEIFX_BLURFACTOR params.LEIFX_BLURFACTOR
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layout(std140, set = 0, binding = 0) uniform UBO
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{
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mat4 MVP;
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} global;
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#define saturate(c) clamp(c, 0.0, 1.0)
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#define lerp(c) mix(c)
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#define mul(a,b) (b*a)
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#define fmod(c) mod(c)
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#define frac(c) fract(c)
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#define tex2D(c,d) texture(c,d)
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#define float2 vec2
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#define float3 vec3
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#define float4 vec4
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#define int2 ivec2
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#define int3 ivec3
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#define int4 ivec4
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#define bool2 bvec2
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#define bool3 bvec3
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#define bool4 bvec4
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#define float2x2 mat2x2
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#define float3x3 mat3x3
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#define float4x4 mat4x4
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#pragma stage vertex
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layout(location = 0) in vec4 Position;
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layout(location = 1) in vec2 TexCoord;
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layout(location = 0) out vec2 vTexCoord;
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void main()
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{
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gl_Position = global.MVP * Position;
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vTexCoord = TexCoord;
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}
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#pragma stage fragment
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layout(location = 0) in vec2 vTexCoord;
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layout(location = 0) out vec4 FragColor;
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layout(set = 0, binding = 2) uniform sampler2D Source;
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void main()
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{
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float3 outcolor = tex2D(Source, vTexCoord).rgb;
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float2 pixel;
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pixel.x = params.SourceSize.z;
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pixel.y = params.SourceSize.w;
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// Sample things.
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float blendy; // to blend unblended with blend... trying to smooth the jag :(
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float blenda;
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float blendfactor;
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float3 pixel1 = tex2D(Source, vTexCoord + float2((pixel.x * 0.15), 0)).rgb;
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float3 pixel2 = tex2D(Source, vTexCoord + float2(-pixel.x * 0.22, 0)).rgb;
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float3 pixel0 = tex2D(Source, vTexCoord + float2(0, 0)).rgb;
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float3 pixelblend;
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float gary1 = dot(pixel1.rgb,float3(1.0));
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float gary2 = dot(pixel2.rgb,float3(1.0));
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float mean = 1.0;
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mean = gary1 - gary2;
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if (mean < 0) mean *= -1;
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if (mean > 1) mean = 1;
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mean = pow(mean, LEIFX_BLURFACTOR);
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if (mean > 1)
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mean = 1;
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{
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// variably BLEND IT ALL TO H*CK!!!!
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blendy = 1 - mean;
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blenda = 1 - blendy;
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pixel0 /= 3;
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pixel1 /= 3;
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pixel2 /= 3;
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pixelblend.rgb = pixel0 + pixel1 + pixel2;
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outcolor.rgb = (pixelblend.rgb * blendy) + (outcolor.rgb * blenda);
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}
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FragColor = vec4(outcolor, 1.0);
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} |