From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Fri, 10 Oct 2008 18:04:49 +0000 (-0600)
Subject: replace 1.0/sqrt() with inversesqrt()
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b3a68b24bd601a4fcffb701bbd73864ed92a05e1;p=mesa.git

replace 1.0/sqrt() with inversesqrt()
---

diff --git a/progs/glsl/CH11-bumpmap.frag b/progs/glsl/CH11-bumpmap.frag
index 063576f5a3c..e12c5d374cd 100644
--- a/progs/glsl/CH11-bumpmap.frag
+++ b/progs/glsl/CH11-bumpmap.frag
@@ -24,7 +24,7 @@ void main()
 
     float d, f;
     d = p.x * p.x + p.y * p.y;
-    f = 1.0 / sqrt(d + 1.0);
+    f = inversesqrt(d + 1.0);
 
     if (d >= BumpSize)
         { p = vec2(0.0); f = 1.0; }