diff options
author | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2017-07-02 22:53:23 +0300 |
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committer | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2017-07-02 23:00:10 +0300 |
commit | 3232d8ec8f15ad00ff16fd4326258de0b0b83486 (patch) | |
tree | 6ea0675d10d3479681ac0aa6fa9fe19eb0209054 /source/blender | |
parent | e3e5ecfaa84e2ad37d56210f40b395007ae61651 (diff) |
Fix T51951: cell noise texture precision issue at unit vertex coordinates.
Solution is to bias the coordinates a little, same as Cycles checker texture.
Diffstat (limited to 'source/blender')
-rw-r--r-- | source/blender/blenlib/intern/noise.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/noise.c b/source/blender/blenlib/intern/noise.c index f834c5b4c74..347640aae0d 100644 --- a/source/blender/blenlib/intern/noise.c +++ b/source/blender/blenlib/intern/noise.c @@ -1394,6 +1394,11 @@ static float voronoi_CrS(float x, float y, float z) /* returns unsigned cellnoise */ static float cellNoiseU(float x, float y, float z) { + /* avoid precision issues on unit coordinates */ + x = (x + 0.000001f)*0.999999f; + y = (y + 0.000001f)*0.999999f; + z = (z + 0.000001f)*0.999999f; + int xi = (int)(floor(x)); int yi = (int)(floor(y)); int zi = (int)(floor(z)); @@ -1411,6 +1416,11 @@ float cellNoise(float x, float y, float z) /* returns a vector/point/color in ca, using point hasharray directly */ void cellNoiseV(float x, float y, float z, float ca[3]) { + /* avoid precision issues on unit coordinates */ + x = (x + 0.000001f)*0.999999f; + y = (y + 0.000001f)*0.999999f; + z = (z + 0.000001f)*0.999999f; + int xi = (int)(floor(x)); int yi = (int)(floor(y)); int zi = (int)(floor(z)); |