[Mesa-dev] [PATCH] mesa: Allow generic attributes for glGetActiveAttrib and GL_ACTIVE_ATTRIBUTES
eric at anholt.net
Sun Nov 27 14:26:22 PST 2011
On Tue, 22 Nov 2011 13:47:27 -0800, "Ian Romanick" <idr at freedesktop.org> wrote:
> From: Ian Romanick <ian.d.romanick at intel.com>
> Page 77 (page 91 of the PDF) says about glGetActiveAttrib:
> "The returned attribute name can be the name of a generic
> attribute or a conventional attribute (which begin with the prefix
> "gl_", see the OpenGL Shading Language specification for a
> complete list)."
> Page 261 (page 275 of the PDF) says about glGetProgramiv:
> "If pname is ACTIVE_ATTRIBUTES, the number of active attributes in
> program is returned."
> It doesn't say anything about built-in vs. user-defined attributes.
> From the language around glGetActiveAttrib and the lack of an
> exclusion of built-in attributes, which exists other places (e.g.,
> around glBindAttribLocation), we can infer that GL_ACTIVE_ATTRIBUTES
> should include the active attribute count. It should also be included
> in the values returned by glGetActiveAttrib.
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43138
Reviewed-by: Eric Anholt <eric at anholt.net>
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