mirror of https://github.com/bjornbytes/lovr.git
25 lines
721 B
GLSL
25 lines
721 B
GLSL
#version 460
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#extension GL_EXT_multiview : require
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#extension GL_GOOGLE_include_directive : require
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#extension GL_EXT_samplerless_texture_functions : require
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#include "lovr.glsl"
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float screenPxRange() {
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vec2 screenTexSize = vec2(1.) / fwidth(FragUV);
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return max(.5 * dot(Material.sdfRange, screenTexSize), 1.);
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}
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float median(float r, float g, float b) {
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return max(min(r, g), min(max(r, g), b));
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}
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void main() {
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vec3 msdf = texture(sampler2D(Texture, Sampler), FragUV).rgb;
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float sdf = median(msdf.r, msdf.g, msdf.b);
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float screenPxDistance = screenPxRange() * (sdf - .5);
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float alpha = clamp(screenPxDistance + .5, 0., 1.);
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if (alpha <= 0.) discard;
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PixelColors[0] = vec4(FragColor.rgb, alpha);
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}
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