Changeset 2215 for trunk/src/lol/image/color.h
- Timestamp:
- Jan 11, 2013, 2:15:19 PM (10 years ago)
- File:
-
- 1 edited
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trunk/src/lol/image/color.h
r2202 r2215 81 81 82 82 /* 83 * Convert RGB to HSV 84 */ 85 static vec3 RGBToHSV(vec3 src) 86 { 87 float offset = 0.f; 88 89 if (src.r < src.g) 90 src = src.grb, offset = -2.f / 6.f; 91 92 if (src.g < src.b) 93 src = src.rbg, offset = -1.f - 4.f * offset; 94 95 if (src.r < src.g) 96 src = src.grb, offset = -2.f / 6.f - offset; 97 98 float chroma = src.r - src.b; 99 return vec3(abs((src.g - src.b) / (6.f * chroma + 1e-40f) + offset), 100 chroma / (src.r + 1e-40f), 101 src.r); 102 } 103 104 static vec4 RGBToHSV(vec4 src) 105 { 106 return vec4(RGBToHSV(src.rgb), src.a); 107 } 108 109 /* 83 110 * Convert linear HSV to linear HSL 84 111 */
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