66 lines
1.1 KiB
GLSL
66 lines
1.1 KiB
GLSL
#version {{version}}
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// Automatically generated from files in pathfinder/shaders/. Do not edit!
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#extension GL_GOOGLE_include_directive : enable
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precision highp float;
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out vec4 oFragColor;
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uniform sampler2D uStencilTexture;
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uniform sampler2D uPaintTexture;
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uniform sampler2D uDest;
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uniform vec2 uFramebufferSize;
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in vec2 vColorTexCoord;
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in vec2 vMaskTexCoord;
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vec4 sampleSrcColor(){
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float coverage = texture(uStencilTexture, vMaskTexCoord). r;
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vec4 srcRGBA = texture(uPaintTexture, vColorTexCoord);
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return vec4(srcRGBA . rgb, srcRGBA . a * coverage);
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}
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vec4 sampleDestColor(){
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vec2 destTexCoord = gl_FragCoord . xy / uFramebufferSize;
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return texture(uDest, destTexCoord);
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}
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vec4 blendColors(vec4 destRGBA, vec4 srcRGBA, vec3 blendedRGB){
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return vec4(srcRGBA . a *(1.0 - destRGBA . a)* srcRGBA . rgb +
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srcRGBA . a * destRGBA . a * blendedRGB +
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(1.0 - srcRGBA . a)* destRGBA . a * destRGBA . rgb,
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1.0);
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}
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void main(){
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vec4 srcRGBA = sampleSrcColor();
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oFragColor = vec4(srcRGBA . rgb * srcRGBA . a, srcRGBA . a);
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}
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