[cairo] Re: [Mesa3d-dev] Re: Points in Cairo Glitz paper

[Keith Packard]

Around 13 o'clock on Apr 22, Allen Akin wrote:

> In OpenGL, PBuffers are surfaces for offscreen drawing.  Back buffers,
> stereo buffers, and (to a lesser extent) auxiliary buffers are used for
> multibuffering.  The need for different types of drawing surfaces
> reflects differences in drawing semantics for onscreen vs. offscreen.

I understand the semantic distinction at the API level, and I can even 
believe there was an historic distinction in the hardware, but I would 
like to know if that hardware-level difference remains in more recent 
hardware, or whether these differences now exist solely in the GL api and 
Mesa implementation.

-keith


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