23 lines
832 B
GLSL
23 lines
832 B
GLSL
// pathfinder/resources/shaders/tile_multicolor.inc.glsl
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//
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// Copyright © 2019 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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uniform sampler2D uPaintTexture;
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uniform vec2 uPaintTextureSize;
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vec2 computePaintTexCoord(uint object, vec2 textureSize) {
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uint width = uint(textureSize.x);
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return (vec2(float(object % width), float(object / width)) + vec2(0.5)) / textureSize;
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}
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vec4 getColor(uint object) {
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vec2 colorTexCoord = computePaintTexCoord(object, uPaintTextureSize);
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return texture(uPaintTexture, colorTexCoord);
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}
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