From: Rudolf Polzer <divverent@alientrap.org>
Date: Sat, 16 Apr 2011 18:12:47 +0000 (+0200)
Subject: simplify normalization
X-Git-Tag: xonotic-v0.5.0~103
X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fxonotic.git;a=commitdiff_plain;h=4c7c9edf236b55ba305c547ade3b3ee0a0a324ab

simplify normalization
---

diff --git a/misc/tools/fft-normalmap-to-heightmap.c b/misc/tools/fft-normalmap-to-heightmap.c
index c9368674..c5b5ea5f 100644
--- a/misc/tools/fft-normalmap-to-heightmap.c
+++ b/misc/tools/fft-normalmap-to-heightmap.c
@@ -85,10 +85,10 @@ void nmap_to_hmap(unsigned char *map, const unsigned char *refmap, int w, int h,
 			double v = nx * nx + ny * ny + nz * nz;
 			if(v > 0)
 			{
-				v = sqrt(v);
-				nx /= v;
-				ny /= v;
-				nz /= v;
+				v = 1/sqrt(v);
+				nx *= v;
+				ny *= v;
+				nz *= v;
 				map[(w*y+x)*4+2] = floor(nx * 127.5 + 128);
 				map[(w*y+x)*4+1] = floor(ny * 127.5 + 128);
 				map[(w*y+x)*4+0] = floor(nz * 127.5 + 128);