Andrew Chant andrew.chant at gmail.com
Fri Jul 20 00:50:19 PDT 2007

 I'm not sure if there's a bug in XRenderCompositeTriangles, or I am just not 
using it correctly.  
Using the over op  and XRenderComposite, I successfully render a black pixmap 
over the right half of a white window.
Using the over op and XRenderCompositeTriangles, I expect a black triangle to 
be rendered over the left half of the white window, but it remains white.

My only guess is it has something to do with the fact that the src and dst are 
RGB24 not ARGB32.  Could someone please take a quick look at my attached test 
program to see where I am wrong?  If it's not wrong then I'll file a bug 
report I guess.

-Andrew Chant
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