diff options
Diffstat (limited to 'source/blender/draw/engines/eevee/shaders/common_utiltex_lib.glsl')
| -rw-r--r-- | source/blender/draw/engines/eevee/shaders/common_utiltex_lib.glsl | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/common_utiltex_lib.glsl b/source/blender/draw/engines/eevee/shaders/common_utiltex_lib.glsl index 95a585f0d9c..427657b19b7 100644 --- a/source/blender/draw/engines/eevee/shaders/common_utiltex_lib.glsl +++ b/source/blender/draw/engines/eevee/shaders/common_utiltex_lib.glsl @@ -12,6 +12,12 @@ uniform sampler2DArray utilTex; #define LUT_SIZE 64 +/** + * Reminder: The 4 noise values are based of 3 uncorrelated blue noises: + * x : Uniformly distributed value [0..1] (noise 1). + * y : Uniformly distributed value [0..1] (noise 2). + * z,w : Uniformly distributed point on the unit circle [-1..1] (noise 3). + **/ #define texelfetch_noise_tex(coord) texelFetch(utilTex, ivec3(ivec2(coord) % LUT_SIZE, 2.0), 0) /* Return texture coordinates to sample Surface LUT */ |