S3TC => r600{c,g}

[darkbasic]

My understanding is that the code for supporting S3TC with R600 (both classic and gallium) hasn't been written yet...

Exactly.

[stupid character limit]

[lxnt]

the values are in the R700 ISA spec as BC1, BC3 and BC5 which are the DX10 equivs of DXTn,

though the driver needs a bit more work than just adding the values.

Thanks, now I see it. That wasn't exactly the obvious place to look :-/ .

And, actually, yes, my patch does not quite work. yet.

[taiu]

the values are in the R700 ISA spec as BC1, BC3 and BC5 which are the DX10 equivs of DXTn,

though the driver needs a bit more work than just adding the values.

DXT1,3,5 should be BC1,2,3 afaik.

For those interested in hacking http://cgit.freedesktop.org/~andrem/...g/?h=r600-dxtn has an experiment on r600c.
It should do tex upload (compressed or not) but no subteximage or getteximage, enough to run ut though. An yes, you probably have to
modify your kernel to allow these tex formats

[lxnt]

though the driver needs a bit more work than just adding the values.

this patch adds BCn values, couple of switches in is_foobar_supported() functions so that mesa advertises s3tc extensions but does not try compress_with_blit(); util_format_s3tc_init() and check from test-hack is merged, format.h is not yet.

Status: does not draw the frame with compressed textures on it.

I read r300g code, it just sets corresponding format, nothing more. What does r[67]xx need above that?

[lxnt]

For those interested in hacking http://cgit.freedesktop.org/~andrem/...g/?h=r600-dxtn has an experiment on r600c.
It should do tex upload (compressed or not) but no subteximage or getteximage, enough to run ut though. An yes, you probably have to
modify your kernel to allow these tex formats

Great. I suspected it had something to do with tile_type/tile_mode. Will try to transcribe that into r600g this evening.

[popper]

http://www.phoronix.com/scan.php?page=news_item&px=OTEwNg

R600 Gallium3D Driver Now Supports S3TC Library

Posted by Michael Larabel on February 15, 2011

[RavFX]

Yeah! I'm compiling everything by ssh.... To bad I need to wait after work to try...

[MoRZiLLo]

For me don't work.
I have 2.6.38rc4 + r600G (Gallium 0.4 on 7.11-devel) and have 3D aceleration, but recompiled the drivers + install + reboot does not change anything.
Only increase 0.2fps the speed

[darkbasic]

You need drm-radeon-testing kernel (hopefully 2.6.39 will be enough).

[pvautrin]

Dave,

Any chance this could be added to 2.6.38 or is this change too late/too intrusive?
Since the new formats are only available via envvar, the risk is mitigated, no?