diff options
Diffstat (limited to 'source/blender/gpu/intern/gpu_shader_material.glsl')
-rw-r--r-- | source/blender/gpu/intern/gpu_shader_material.glsl | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/source/blender/gpu/intern/gpu_shader_material.glsl b/source/blender/gpu/intern/gpu_shader_material.glsl index a0c37dc5484..2d6df8675e4 100644 --- a/source/blender/gpu/intern/gpu_shader_material.glsl +++ b/source/blender/gpu/intern/gpu_shader_material.glsl @@ -75,6 +75,38 @@ void hsv_to_rgb(vec4 hsv, out vec4 outcol) outcol = vec4(rgb, hsv.w); } +float srgb_to_linearrgb(float c) +{ + if(c < 0.04045) + return (c < 0.0)? 0.0: c * (1.0/12.92); + else + return pow((c + 0.055)*(1.0/1.055), 2.4); +} + +float linearrgb_to_srgb(float c) +{ + if(c < 0.0031308) + return (c < 0.0)? 0.0: c * 12.92; + else + return 1.055 * pow(c, 1.0/2.4) - 0.055; +} + +void srgb_to_linearrgb(vec4 col_from, out vec4 col_to) +{ + col_to.r = srgb_to_linearrgb(col_from.r); + col_to.g = srgb_to_linearrgb(col_from.g); + col_to.b = srgb_to_linearrgb(col_from.b); + col_to.a = col_from.a; +} + +void linearrgb_to_srgb(vec4 col_from, out vec4 col_to) +{ + col_to.r = linearrgb_to_srgb(col_from.r); + col_to.g = linearrgb_to_srgb(col_from.g); + col_to.b = linearrgb_to_srgb(col_from.b); + col_to.a = col_from.a; +} + #define M_PI 3.14159265358979323846 /*********** SHADER NODES ***************/ |