Re: Readback Framebuffer.

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Marcin Romaszewicz (marcin++at++asmodean.engr.sgi.com)
Wed, 2 Jun 1999 09:55:03 -0700 (PDT)

No, it isn't possible, OpenGL does not support this functionality. Direct
framebuffer access is extremely difficult to implement so that it co-exists
with the rendering pipeline, and that's assuming that a particular piece of
hardware even has an addressable frame buffer.

-- Marcin

>
> Hello All,
>
> i have a question, if there is a possibility to get the pointer to the
> framebuffer ( esp. the ZBuffer ). glReadPixels isn't' very fast, when you
> have to read back a big buffer. I'm working on a Onyx2 IR.
>
> Many thanks in advance,
>
> Peter
>
>
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