On Sat, 20 Sep 2003, Zampelli [iso-8859-1] St�phane wrote:
> One more question : what are alpha blended cursors ? And what is shadow
> framebuffer ?
The Shadow Framebuffer is the mechanism by which rotation is
implemented. The server renders into a hidden framebuffer and
the result is copied to the visble framebuffer, rotating on the
copy. I allows us to change the way the framebuffer is displayed
without actually modifying any of the normal rendering code.
XFree86 4.3 has support for cursors with transparency.
It was the code for copying and rotating the result of the cursor
rendering that had a clipping bug, which could allow software
to read outside of the framebuffer when the cursor went offscreen.
Mark.
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