calculate weight paint colors once per vertex rather then on every face corner (was doing the same deform vert lookup and color calculation multiple times per vertex),

Quick shows over 2x speedup in my tests, will give bigger speedup with more vertex groups.

If you happen to have vertices with no faces using them - vertex colors will be calculated unnecessarily, but this isnt a common use case for weight paint mode.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_texture.h b/source/blender/blenkernel/BKE_texture.h
index 52fa52a5899..7f321abf48e 100644
--- a/source/blender/blenkernel/BKE_texture.h
+++ b/source/blender/blenkernel/BKE_texture.h
@@ -67,7 +67,7 @@ void free_plugin_tex(struct PluginTex *pit);
 
 void init_colorband(struct ColorBand *coba, int rangetype);
 struct ColorBand *add_colorband(int rangetype);
-int do_colorband(struct ColorBand *coba, float in, float out[4]);
+int do_colorband(const struct ColorBand *coba, float in, float out[4]);
 void colorband_table_RGBA(struct ColorBand *coba, float **array, int *size);
 int vergcband(const void *a1, const void *a2);
 struct CBData *colorband_element_add(struct ColorBand *coba, float position);