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Diffstat (limited to 'cogl/cogl-snippet.h')
| -rw-r--r-- | cogl/cogl-snippet.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/cogl/cogl-snippet.h b/cogl/cogl-snippet.h index 5eecbfc8..cdce3b26 100644 --- a/cogl/cogl-snippet.h +++ b/cogl/cogl-snippet.h @@ -271,6 +271,19 @@ COGL_BEGIN_DECLS * coloring algorithms. This is equivalent to #gl_FrontFacing. * </para></glossdef> * </glossentry> + * <glossentry> + * <glossterm>vec2 <emphasis>cogl_point_coord</emphasis></glossterm> + * <glossdef><para> + * When rendering points, this will contain a vec2 which represents + * the position within the point of the current fragment. + * vec2(0.0,0.0) will be the topleft of the point and vec2(1.0,1.0) + * will be the bottom right. Note that there is currently a bug in + * Cogl where when rendering to an offscreen buffer these + * coordinates will be upside-down. The value is undefined when not + * rendering points. This builtin can only be used if the + * %COGL_FEATURE_ID_POINT_SPRITE feature is available. + * </para></glossdef> + * </glossentry> * </glosslist> * * Here is an example of using a snippet to add a desaturate effect to the |