Add MESA_framebuffer_flip_x and MESA_framebuffer_SwapXY
MESA_framebuffer_flip_x and MESA_framebuffer_swap_xy are add to implement rotation feature with MESA_framebuffer_flip_y.
Edited by Cici Ruan
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
MESA_framebuffer_flip_x and MESA_framebuffer_swap_xy are add to implement rotation feature with MESA_framebuffer_flip_y.