Hi,
I am looking into Xorg for performance optimization, and want to do some
software acceleration for the Xorg fallback functions when the hardware
acceleration is not available. I am now using a notebook with intel display
card. In the UXA driver, I force the driver to use fallback funcs instead of
the Accelerated funcs. As in uxa/uxa-accel.c -> uxa_copy_area(), I made
uxa_screen->force_fallback = 1, force uxa driver to call
uxa_check_copy_area()->fbCopyArea(), but the fbCopyArea seemed NOT to be the
fbCopyArea in Xorg fb/fbcopy.c ! For I added return NULL immediately in the
beginning of fb/fbcopy.c -> fbCopyArea(), but made no difference, but if I
comment the fbCopyArea() in uxa/uxa-unaccel.c the display is ruined. It seemed
that the above two fbCopyArea() functions are not the same. Where did the Xorg
fallback to? NOT to the fb/fbcopy.c ? I am eager to know that, could some body
tell ? Thanks a lot!
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