27 lines
719 B
GLSL
27 lines
719 B
GLSL
#version 330
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// pathfinder/demo/resources/shaders/mask_tile.fs.glsl
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//
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// Copyright © 2018 The Pathfinder Project Developers.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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precision highp float;
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uniform sampler2D uStencilTexture;
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in vec2 vTexCoord;
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in float vBackdrop;
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in vec4 vColor;
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out vec4 oFragColor;
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void main() {
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float coverage = abs(texture(uStencilTexture, vTexCoord).r + vBackdrop);
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oFragColor = vec4(vColor.rgb, vColor.a * coverage);
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}
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