progs/glsl: Fix bump GLSL compilation error on Mac OS.

diff --git a/progs/glsl/CH11-bumpmaptex.frag b/progs/glsl/CH11-bumpmaptex.frag
index b1f93b7..b5dabb4 100644 (file)
--- a/progs/glsl/CH11-bumpmaptex.frag
+++ b/progs/glsl/CH11-bumpmaptex.frag
@@ -17,7 +17,7 @@ uniform float BumpDensity;     // = 16.0
 uniform float BumpSize;        // = 0.15
 uniform float SpecularFactor;  // = 0.5
 
-sampler2D Tex;
+uniform sampler2D Tex;
 
 void main()
 {