diff options
Diffstat (limited to 'Gem/examples/10.glsl/texture_rect.frag')
-rw-r--r-- | Gem/examples/10.glsl/texture_rect.frag | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Gem/examples/10.glsl/texture_rect.frag b/Gem/examples/10.glsl/texture_rect.frag new file mode 100644 index 0000000..98adc1f --- /dev/null +++ b/Gem/examples/10.glsl/texture_rect.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 = texture2DRect(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; +} |