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| author | Clément Foucault <foucault.clem@gmail.com> | 2021-03-08 19:21:17 +0300 |
|---|---|---|
| committer | Clément Foucault <foucault.clem@gmail.com> | 2021-03-08 19:25:38 +0300 |
| commit | bf799cb12c6991ef8fcbfcd0bc0777e62e08ad9b (patch) | |
| tree | 0678b6fa9fd6c82d167c80faf9d8bb087bbba64b /source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl | |
| parent | 30cb4326fe0f5f0a8dbcbb8f4b474226c833d793 (diff) | |
Fix T81741 EEVEE: Ambient Occlusion does not converge properly
This was due to the AO random sampling using the same "seed" as
the AA jitter. Decorelating the noise fixes the issue.
Diffstat (limited to 'source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl')
| -rw-r--r-- | source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl b/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl index 689f99edad9..a0bfd440dd9 100644 --- a/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl +++ b/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl @@ -60,7 +60,11 @@ vec2 get_ao_area(float view_depth, float radius) vec2 get_ao_noise(void) { - return texelfetch_noise_tex(gl_FragCoord.xy).xy; + vec2 noise = texelfetch_noise_tex(gl_FragCoord.xy).xy; + /* Decorrelate noise from AA. */ + /* TODO(fclem) we should use a more general approach for more random number dimentions. */ + noise = fract(noise * 6.1803402007); + return noise; } vec2 get_ao_dir(float jitter) |