diff options
Diffstat (limited to 'src/opengl/util/simple_porter_duff.glsl')
-rw-r--r-- | src/opengl/util/simple_porter_duff.glsl | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/src/opengl/util/simple_porter_duff.glsl b/src/opengl/util/simple_porter_duff.glsl deleted file mode 100644 index 4cb0599ac5..0000000000 --- a/src/opengl/util/simple_porter_duff.glsl +++ /dev/null @@ -1,16 +0,0 @@ -uniform vec2 porterduff_ab; -uniform vec3 porterduff_xyz; - -vec4 composite(vec4 src, vec4 dst) -{ - vec4 result; - - result.xyz = porterduff_ab.x * src.xyz * dst.a - + porterduff_ab.y * dst.xyz * src.a - + porterduff_xyz.y * src.xyz * (1.0 - dst.a) - + porterduff_xyz.z * dst.xyz * (1.0 - src.a); - - result.a = dot(porterduff_xyz, vec3(src.a * dst.a, src.a * (1.0 - dst.a), dst.a * (1.0 - src.a))); - - return result; -} |