Web3D/glsl-util
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[add] glsl files.

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This commit is contained in:
yoichi kobayashi 2016-10-04 00:31:23 +09:00
parent fe73f0bb83
commit 25fa12d68e
2 changed files with 16 additions and 0 deletions
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6
convertHsvToRgb.glsl Normal file
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vec3 convertHsvToRgb(vec3 c) {
vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
}
#pragma glslify: export(convertHsvToRgb)

10
convertRgbToHsv.glsl Normal file
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vec3 convertRgbToHsv(vec3 c) {
vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
float d = q.x - min(q.w, q.y);
float e = 1.0e-10;
return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
}
#pragma glslify: export(convertRgbToHsv)