15 lines
397 B
Text
15 lines
397 B
Text
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// pixelate by lowering uv resolution
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vec4 pixelate(sampler2D tex, vec2 uv, float resolution_x) {
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vec2 texture_size = vec2(textureSize(tex, 0));
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vec2 ratio;
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if (texture_size.x > texture_size.y) {
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ratio = vec2(texture_size.x / texture_size.y, 1.0);
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}
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else {
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ratio = vec2(1.0, texture_size.y / texture_size.x);
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}
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vec2 r = ratio * resolution_x;
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return texture(tex, trunc(uv * r) / r);
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}
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