Wine: DirectDraw over Direct3D
thunderbird2k at gmx.net
Tue Dec 13 03:53:57 CST 2005
> > What is slow with ATI cards? Â It seems that you should only need basic
> > acceleration to do what you propose. Â Is fglrx missing something that
> > be required for 2D rendering?
> Texture upload is very slow. glReadPixels, glWritePixels and friends take
> ages. That means that blt, Lock, and Unlock is really slow.
> There is some hope at least: Xine and Mplayer can play videos over OpenGL
> really fast, maybe we can find out how they do it.
Indeed glReadPixels and glWritePixels might be slow using the Ati drivers
but those calls weren't used for the texture uploading. For that purpose
just glTexImage2D / glTexSubImage2D calls were used. If texture uploading
was slow on the Ati drivers people would be unable to play games ;)
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