diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class2/deferred')
| -rw-r--r-- | indra/newview/app_settings/shaders/class2/deferred/skyF.glsl | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/skyF.glsl b/indra/newview/app_settings/shaders/class2/deferred/skyF.glsl index 5a58f9bc8c..6841a8194f 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/skyF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/skyF.glsl @@ -82,6 +82,12 @@ vec3 rainbow(float d) // interesting range, but in reversed order: i.e. d = (1 - d) - 1.575 d = clamp(-0.575 - d, 0.0, 1.0); + // With the colors in the lower 1/4 of the texture, inverting the coords leaves most of it inaccessible. + // So, we can stretch the texcoord above the colors (ie > 0.25) to fill the entire remaining coordinate + // space. This improves gradation, reduces banding within the rainbow interior. (1-0.25) / (0.425/0.25) = 4.2857 + float interior_coord = max(0.0, d - 0.25) * 4.2857; + d = clamp(d, 0.0, 0.25) + interior_coord; + float rad = (droplet_radius - 5.0f) / 1024.0f; return pow(texture2D(rainbow_map, vec2(rad, d)).rgb, vec3(1.8)) * moisture_level; } |