From d4ca478ad313c6c20834e410ba14ad3a5e7b20bf Mon Sep 17 00:00:00 2001
From: hwc487
Date: Tue, 12 Jun 2012 10:28:26 -0700
Subject: Material cleanup & bug fixes.

---
 assets/shaders/ZInvert.frag.glsl | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'assets/shaders/ZInvert.frag.glsl')

diff --git a/assets/shaders/ZInvert.frag.glsl b/assets/shaders/ZInvert.frag.glsl
index b1fd1748..1566b881 100644
--- a/assets/shaders/ZInvert.frag.glsl
+++ b/assets/shaders/ZInvert.frag.glsl
@@ -4,6 +4,7 @@ precision highp float;
 
 uniform vec2 u_resolution;
 uniform float u_time;
+uniform float u_speed;
 uniform sampler2D u_tex0;
 
 void main(void)
@@ -11,11 +12,13 @@ void main(void)
     vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
     vec2 uv;
 
+	float time = u_time * u_speed;
+
     float a = atan(p.y,p.x);
     float r = sqrt(dot(p,p));
 
-    uv.x = cos(0.6+u_time) + cos(cos(1.2+u_time)+a)/r;
-    uv.y = cos(0.3+u_time) + sin(cos(2.0+u_time)+a)/r;
+    uv.x = cos(0.6+time) + cos(cos(1.2+time)+a)/r;
+    uv.y = cos(0.3+time) + sin(cos(2.0+time)+a)/r;
 
     vec3 col =  texture2D(u_tex0,uv*.25).xyz;
 
-- 
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