AMD applies make-up to the face of its Linux Control Centre (the Inquirer)

AMD applies make-up to the face of its Linux Control Centre (the Inquirer)

Posted Jul 10, 2007 9:47 UTC (Tue) by daenzer (subscriber, #7050)
In reply to: AMD applies make-up to the face of its Linux Control Centre (the Inquirer) by drag
Parent article: AMD applies make-up to the face of its Linux Control Centre (the Inquirer)

> How the hell is Nvidia NOT using AIGLX?

They have their own GLX implementation, top to bottom. It also supports
accelerated indirect rendering, but the acronym AIGLX usually refers
specifically to that part of the GLX implementation that comes with X.org,
which they don't use at all.

> AIGLX provides indirect 3D hardware acceleration. In order to do this your
> video drivers need to support "texture_from_pixmap" OpenGL extension.

Actually, the traditional AIGLX implementation of GLX_EXT_texture_from_pixmap
is 100% driver independent and involves several data copies, which IME
accounts for a lot of the perceived performance problems. xserver 1.4 will
support zero-copy GLX_EXT_texture_from_pixmap with AIGLX, which performs much
better but requires minimal driver support and only works with EXA.

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