Bugfix: de-premul for image texture didn't happen for non-osa case.

2007-12-04 19:06:00 +00:00
parent 12a6008d2f
commit 25ea528a29
1 changed files with 8 additions and 0 deletions
--- a/source/blender/render/intern/source/imagetexture.c
+++ b/source/blender/render/intern/source/imagetexture.c
@@ -244,6 +244,14 @@ int imagewrap(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, TexResult *texre
 	
 	if(tex->flag & TEX_NEGALPHA) texres->ta= 1.0f-texres->ta;

+	/* de-premul, this is being premulled in shade_input_do_shade() */
+	if(texres->ta!=1.0f && texres->ta!=0.0f) {
+		fx= 1.0f/texres->ta;
+		texres->tr*= fx;
+		texres->tg*= fx;
+		texres->tb*= fx;
+	}
+	
 	return retval;
 }