[Mesa-dev] [Bug 99214] Crash in library libswrAVX.so when assigning vertex buffer object pointers with elements of type GL_DOUBLE

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99214

--- Comment #5 from Roland Scheidegger <sroland at vmware.com> ---
(In reply to Ilia Mirkin from comment #4)
> (In reply to chris from comment #3)
> > That's unfortunate. Spec indicates GL_DOUBLE as an accepted value. 
> > https://www.opengl.org/sdk/docs/man2/xhtml/glVertexPointer.xml
> 
> Correct - it was one of the features added in GL 2.0, I believe. But swr is
> not a fully conformant driver, and this is one of the items that's lacking.
> Patches welcome!

double type for vertex attributes is a 1.0 feature, actually. Albeit prior to
1.1 you couldn't use glVertexPointer and friends... Not to mention buffer
objects...

(Albeit I'd say you really should avoid it usually in any case, it will just
get converted to float somewhere. Unless your data naturally comes as doubles,
so it has to be converted somewhere no matter what.)

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