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- Newsgroups: comp.graphics.opengl
- Path: sparky!uunet!stanford.edu!microunity!jsw
- From: jsw@microunity.com (Jeff Weinstein)
- Subject: Re: conformance question
- Distribution: world
- Message-ID: <1992Dec15.080609.26325@microunity.com>
- Sender: usenet@microunity.com (news)
- Nntp-Posting-Host: rgb.microunity.com
- Organization: MicroUnity Systems Engineering, Inc.
- References: <1992Dec15.074053.1837@dsd.es.com>
- Date: Tue, 15 Dec 1992 08:06:09 GMT
- Lines: 26
-
- In article <1992Dec15.074053.1837@dsd.es.com>, rthomson@mesa.dsd.es.com (Rich Thomson) writes:
- > Would an OpenGL implementation that did not provide double buffering,
- > depth (Z) buffering, stencil buffering nor accumulation buffering be
- > conformant with the OpenGL specification? (In other words, it would
- > only provide a "front left" buffer for rendering.)
- >
- > If the answer is yes, how is this different from subsetting?
-
- From the GLX extension spec, version 1.0:
-
- A conformant GLX extension must provide at least one RGB visual
- with a spencil buffer, a depth buffer, and an accumulation buffer
- with color components of non-zero size. A conformant extension
- must also provide at least one color index type visual with depth
- and stencil buffers. Other visuals with fewer associated buffers
- may also be made available.
-
- So the answer to your question is no, at least in the context of GLX.
-
- --Jeff
-
- --
- Jeff Weinstein - X Protocol Police
- MicroUnity Systems Engineering, Inc.
- jsw@microunity.com
- Any opinions expressed above are mine.
-