Fix #20662: normal map rendering with negative factor didn't flip

the direction correctly.
2010-01-30 14:41:51 +00:00
parent dde838ec5e
commit 147e782979
1 changed files with 1 additions and 1 deletions
--- a/source/blender/render/intern/source/texture.c
+++ b/source/blender/render/intern/source/texture.c
@@ -2108,7 +2108,7 @@ void do_material_tex(ShadeInput *shi)
 							texres.nor[0] = -texres.nor[0];
 							texres.nor[1] = -texres.nor[1];
 						}
-						fact = Tnor*tex->norfac;
+						fact = Tnor*fabs(tex->norfac);
 						if (fact>1.f) fact = 1.f;
 						facm = 1.f-fact;
 						if(mtex->normapspace == MTEX_NSPACE_TANGENT) {