diff options
| author | clayjohn <claynjohn@gmail.com> | 2020-08-01 17:48:40 -0700 |
|---|---|---|
| committer | clayjohn <claynjohn@gmail.com> | 2020-08-01 17:48:40 -0700 |
| commit | cf07a58a5f626d9e21e7beaa9667b979fe575012 (patch) | |
| tree | 4fb1ceff098e1bc1981a1100c1959b5871e1b220 /servers/rendering | |
| parent | ec9302ceccb75f44038db3695d2f9e7c82cfe951 (diff) | |
Improve the quick hash function for all GPUs
Diffstat (limited to 'servers/rendering')
| -rw-r--r-- | servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl b/servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl index 792a1aa05f..71822d9c07 100644 --- a/servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl +++ b/servers/rendering/rasterizer_rd/shaders/scene_high_end.glsl @@ -681,9 +681,13 @@ LIGHT_SHADER_CODE #ifndef USE_NO_SHADOWS -// Produces cheap but low-quality white noise, nothing special +// Produces cheap white noise, optmized for window-space +// Comes from: https://www.shadertoy.com/view/4djSRW +// Copyright: Dave Hoskins, MIT License float quick_hash(vec2 pos) { - return fract(sin(dot(pos * 19.19, vec2(49.5791, 97.413))) * 49831.189237); + vec3 p3 = fract(vec3(pos.xyx) * .1031); + p3 += dot(p3, p3.yzx + 33.33); + return fract((p3.x + p3.y) * p3.z); } float sample_directional_pcf_shadow(texture2D shadow, vec2 shadow_pixel_size, vec4 coord) { |