I created 32 bit pixmap with alpha channel loaded from tga file.
Then used XRenderCreatePicture Picture with PictStandardARGB32 format
from that pixmap. This is used as src picture.
Dst image is created from root window using visual from that window in
RGB format.
Called XRenderComposite with no mask.

Problem is that when i use this using fglrx driver it is working well
it uses alpha channel perfectly, but when i try this on different
graphic cards like nvidia or intel it doesnt use alpha channel at all.

Nvidia driver is (II) NVIDIA dlloader X Driver  177.82  Tue Nov  4
13:42:45 PST 2008
Intel driver is xf86-video-intel-2.5.0.
(II) Module fglrx: vendor="FireGL - ATI Technologies Inc."
       compiled for 7.1.0, module version = 8.55.2


Is there any small example of using argb format or can somebody at
least point me what i am doing wrong.
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