1 files changed, 16 insertions, 0 deletions
diff --git a/packages/noncvs/windows/extra/Gem/examples/10.glsl/texture.frag b/packages/noncvs/windows/extra/Gem/examples/10.glsl/texture.frag
new file mode 100644
index 00000000..aaee8245
--- /dev/null
+++ b/packages/noncvs/windows/extra/Gem/examples/10.glsl/texture.frag
@@ -0,0 +1,16 @@
+// Cyrille Henry 2007
+
+//#extension GL_ARB_texture_rectangle : enable
+//uniform sampler2DRect MyTex;
+uniform sampler2D MyTex;
+uniform float B,C;
+
+void main (void)
+{
+ vec4 color = texture2D(MyTex, (gl_TextureMatrix[0] * gl_TexCoord[0]).st);
+
+ color *= B+1.; // brightness
+ vec4 gray = vec4(dot(color.rgb,vec3(0.2125,  0.7154, 0.0721)));
+ color = mix(gray, color, C+1.); // contrast
+ gl_FragColor = color;
+}