resort to power-of-two textures if needed

[Tormod Volden]

The savage video hardware does not support "non power of two textures" and compiz therefore fails to start. Compiz should have the ability to use only POT textures.

[Tormod Volden (tormodvolden)]

The savage video hardware does not support "non power of two textures" and compiz therefore fails to start. Compiz should have the ability to use only POT textures.

[Davidr-novell (davidr-novell)]

Assuming that textures are the same size as the pixmaps being bound to them
makes things a lot more convenient and removes tricky special cases that plugins
would have to be aware of.

GLX_EXT_tfp requires npot textures so if they are not available compiz would
have to MakeCurrent-CopyTexSubImage the pixmap content, which is slower and
requires more video memory. Most hardware that doesn't support npot textures is
already low on video memory so even if compiz would resort to pot textures if
needed it might not be usable anyhow.

[Bugzi09-fdo-tormod (bugzi09-fdo-tormod)]

Sniff, no compiz for me? https://bugs.freedesktop.org/show_bug.cgi?id=8758#c1
Yes, I have only up to 32 MB of video memory. But shouldn't there be some
fallback, like compiz starting but with reduced bling?

[Singpolyma (singpolyma)]

This error occurs with more than just the Savage card... if some plugins (ie 'reduced bling) didn't work on POT that would be fine... but having it fail completely in annoying...

[Daniel Stone (daniels)]

Sorry about the phenomenal bug spam, guys. Adding xorg-team@ to the QA contact so bugs don't get lost in future.

[Travis Watkins (amaranth)]

So, from what upstream has said and what I know about the problem I'd say this is simply not possible.

[Mirco Müller (macslow)]

A cleaner and better approach would be to add support GL_ARB_texture_rectangle to the savage driver. For compiz (and probably a lot of plugins) it would be a mess to implement a fall back for "power-of-two"-only drivers.

[madrigaldeath (madrigaldeath)]

what would the proccess be for getting a driver fix for the supersavage started? i'm interested in coding, and debugging if someone has started already