LoadImage & 32bpp bitmaps

Frank Richter frank.richter at gmail.com
Thu Jul 7 09:06:07 CDT 2005


On 07.07.2005 15:21, Kevin Koltzau wrote:
> The problem I think is when the image is put into an XImage, then copied back 
> out it looses the alpha, so using GetPixel to verify will have the same 
> problem (it just returns XGetPixel).  StretchBlt also does this, but 
> AlphaBlend does not as its using XRenderSetPictureTransform to stretch

Hm... is there a way to make the *Blt() functions preserve alpha (as
they should)? This message:
http://lists.freedesktop.org/archives/cairo/2003-December/000900.html
seems to suggest that 32bpp XImages seem to be possible, but then, I
hardly know X or how Wine interacts with it...

-f.r.




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