Neil Roberts dab1da20ae [cogl-primitives] Don't clear the whole stencil buffer
When _cogl_add_path_to_stencil_buffer is used to draw a path we don't
need to clear the entire stencil buffer. Instead it can clear just the
bounding box of the path. This adds an extra parameter called
'need_clear' which is only set if the stencil buffer is being used for
clipping.

http://bugzilla.openedhand.com/show_bug.cgi?id=1829
2009-11-13 10:51:47 +00:00
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