Radeon M7 rendering problem for SXGA+

[John Klingler]

The ATI Radeon M7 BLTs require screen width to be an even multiple of 64 
bytes, otherwise the pitch is wrong. For example, when moving a window, 
the window contents appear as diagonal artifacts on the root window.

For screen widths that are not multiples of 64, for example 1400 
(SXGA+), ATI says they think setting the surface width to the next 
greater multiple of 64 should correct this. I didn't see any way to do 
that and am still awaiting a reply. In the meantime, I use the cfb blits 
for this situation. (The problem also occurs when the resolution is 
800x600x8Bpp. )

Does anyone know how to get the M7 accelerated blits to work in cases 
such as this?


Thanks,

John Klingler
P.S. This problem affects all the M7 rendering functions, e.g. lines 
etc., not just the blits.