Better fix for T42139

Noise function's significant bits are up to 31st bit. This should now
give the same visual result as before, minus the stripes.

Issue pointed out by Anthony Edlin, thanks!

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/render/intern/source/render_texture.c b/source/blender/render/intern/source/render_texture.c
index d9d1acf4efe..1a8ab60d4d0 100644
--- a/source/blender/render/intern/source/render_texture.c
+++ b/source/blender/render/intern/source/render_texture.c
@@ -723,7 +723,7 @@ static float voronoiTex(Tex *tex, const float texvec[3], TexResult *texres)
 static int texnoise(Tex *tex, TexResult *texres, int thread)
 {
 	float div=3.0;
-	int val, ran, loop, shift = 30;
+	int val, ran, loop, shift = 29;
 	
 	ran=  BLI_rng_thread_rand(random_tex_array, thread);
 	
@@ -734,8 +734,8 @@ static int texnoise(Tex *tex, TexResult *texres, int thread)
 	
 	while (loop--) {
 		shift -= 2;		
-		val += ((ran >> shift) & 3);
-		div += 3.0f;
+		val *= ((ran >> shift) & 3);
+		div *= 3.0f;
 	}
 	
 	texres->tin= ((float)val)/div;