diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/deferred/srgb.glsl')
-rw-r--r-- | indra/newview/app_settings/shaders/class1/deferred/srgb.glsl | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl b/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl index 587f3d5a94..bc3324f543 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/srgb.glsl @@ -23,6 +23,24 @@ * $/LicenseInfo$ */ +vec3 rgb2hsv(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); +} + +vec3 hsv2rgb(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); +} + vec3 srgb_to_linear(vec3 cs) { vec3 low_range = cs / vec3(12.92); @@ -30,7 +48,6 @@ vec3 srgb_to_linear(vec3 cs) bvec3 lte = lessThanEqual(cs,vec3(0.04045)); return mix(high_range, low_range, lte); - } vec3 linear_to_srgb(vec3 cl) @@ -41,6 +58,4 @@ vec3 linear_to_srgb(vec3 cl) bvec3 lt = lessThan(cl,vec3(0.0031308)); return mix(high_range, low_range, lt); - } - |