0d14e5a379
Needs a lot of cleanup. Data has been de-duplicated, and where identical copies existed, one of them has been replaced with a symlink. Some files have been excluded, such as binaries, installers and debug dumps. Some of that may still be present.
41 lines
1.1 KiB
GLSL
41 lines
1.1 KiB
GLSL
float aspect(vec2 v) {
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return v.x / v.y;
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}
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vec3 aspectCorrectedTexture() {
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vec2 uv = _position.xy;
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uv += 0.5;
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uv.y = 1.0 - uv.y;
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float targetAspect = iWorldScale.x / iWorldScale.y;
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float sourceAspect = aspect(iChannelResolution[0].xy);
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float aspectCorrection = sourceAspect / targetAspect;
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if (aspectCorrection > 1.0) {
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float offset = aspectCorrection - 1.0;
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float halfOffset = offset / 2.0;
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uv.y -= halfOffset;
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uv.y *= aspectCorrection;
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} else {
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float offset = 1.0 - aspectCorrection;
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float halfOffset = offset / 2.0;
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uv.x -= halfOffset;
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uv.x /= aspectCorrection;
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}
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if (any(lessThan(uv, vec2(0.0)))) {
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return vec3(0.0);
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}
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if (any(greaterThan(uv, vec2(1.0)))) {
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return vec3(0.0);
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}
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vec4 color = texture(iChannel0, uv);
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return color.rgb * max(0.5, sourceAspect) * max(0.9, fract(iWorldPosition.x));
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}
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float getProceduralColors(inout vec3 diffuse, inout vec3 specular, inout float shininess) {
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specular = aspectCorrectedTexture();
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return 1.0;
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}
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