Hello,
I'm novice in X System.
I read i830_video.c in xf86-video-intel 2.12.0, and have several
questions about X Video extension.
1. The prototype of PutImage() seems to be a complete "overlay" way.
I have been quite confusing after read
http://en.wikipedia.org/wiki/X_video_extension#The_role_of_window_manager_support_and_compositing
, which mentions compositing vs overlay.
Is it possible to composite/stack/etc. with current X Video extension?
2. In i830_video.c, it seems that the only difference between "textured"
and "overlay" methods is PutImage func ptr.
So why both of them is necessary?
3. I have no knowledge of Intel GMA hardware, and didn't understand
i830_video.c well.
One quick question is that, in the "textured" PutImage(), what is the
render target? Where is the code setting that render target?
yours,
Jim Liu
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