Fix #29922: NaN pixels due to bump map in degenerate case.

2012-01-18 22:36:19 +00:00
parent 42fcd2919a
commit 7162ca5be7
1 changed files with 2 additions and 1 deletions
--- a/source/blender/render/intern/source/render_texture.c
+++ b/source/blender/render/intern/source/render_texture.c
@@ -2127,7 +2127,8 @@ static int ntap_bump_compute(NTapBump *ntap_bump, ShadeInput *shi, MTex *mtex, T
 			fMagnitude *= len_v3(vN);
 		}
 		
-		for(xyz=0; xyz<3; xyz++)
+		if(ntap_bump->fPrevMagnitude > 0.0f)
+			for(xyz=0; xyz<3; xyz++)
 				ntap_bump->vNacc[xyz] *= fMagnitude / ntap_bump->fPrevMagnitude;
 		
 		ntap_bump->fPrevMagnitude = fMagnitude;