AMD Releases Cayman Documentation, Open Driver Is Close

[Svartalf]

What I'm trying to say is that the patent will stop the drivers from having these features, because no company or well-known open source organization is going to work on implementing patented software.

Heh... Really??

Linux.
VP3/Theora.
VP8/WebM.

Patented stuff in the mix. FOSS. RedHat, SuSE, Debian, Ubuntu, FSF, etc. use the stuff and develop for it ALL THE TIME.

It depends on whether you have an effective license in a pledge that forms one or a full-on license grant- if you do, you work with it. If you don't...well, you don't.

[Svartalf]

GL3 or 4 are not a no go, we will have 99% (% top of my head where 1% is patented stuffed) of it advertised through appropriate extension. Question will be do we advertise GL version 3 or 4 without the patented stuff and throw glerror to program trying to use those, or do we go another way.

How are the Mesa team members handling the attempt to use S3TC? Don't the drivers throw an error when you try that right now? I'd say unless it's more than 20% of the feature on the ARB edge, you'd do the same thing. If it's more than that, you don't advertise it unless even though it's a larger percentage, it's not as harmful as the first.

[smitty3268]

GL3 or 4 are not a no go, we will have 99% (% top of my head where 1% is patented stuffed) of it advertised through appropriate extension. Question will be do we advertise GL version 3 or 4 without the patented stuff and throw glerror to program trying to use those, or do we go another way.

Are there even any apps out there that try to use OpenGL 3 or 4 and DON'T use something like floating point rendering targets? I was under the impression that it was a pretty fundamental feature of GL3. On the other hand, i guess apps that use that aren't likely to provide an older path that would work on the drivers anyway, so maybe it wouldn't cause any new problems.

[LiquidAcid]

How are the Mesa team members handling the attempt to use S3TC? Don't the drivers throw an error when you try that right now?

No, where did you get that from?

I have perfect s3tc support on my Intel Arrandale GPU and AFAIK r300g also has full support. I'm currently fiddling around with r600g, where mipmap aren't correctly handled yet (and the CS checker needs some update, but for now it works to just disable the texture checks). Trying to find out how r300g handles these, maybe this gives me a clue on how to do it for r600g.

[glisse]

No, where did you get that from?

I have perfect s3tc support on my Intel Arrandale GPU and AFAIK r300g also has full support. I'm currently fiddling around with r600g, where mipmap aren't correctly handled yet (and the CS checker needs some update, but for now it works to just disable the texture checks). Trying to find out how r300g handles these, maybe this gives me a clue on how to do it for r600g.

mipmap have been working for a long time unless somethings recent broke them, if you have issue please open a bug and provide test case. We don't see issue with cs checker, which kernel ? Again it's best to open bug for this.

[LiquidAcid]

I'm talking about r600g here:

https://bugs.freedesktop.org/show_bug.cgi?id=32888

[pingufunkybeat]

I mean it would be great to have OpenGL>2.1, but when you look at it, it is actually not a big deal.

All of the games I mentioned are OpenGL 2.1, they don't require any OpenGL3 stuff.

[bridgman]

I'm talking about r600g here:
https://bugs.freedesktop.org/show_bug.cgi?id=32888

I'm pretty sure that glisse *only* talks about r600g

[LiquidAcid]

Well, then he's definitely wrong, because texture compression never really worked for r600g. How could this even work when the CS checker rejects these texture formats completly?

[glisse]

Well, then he's definitely wrong, because texture compression never really worked for r600g. How could this even work when the CS checker rejects these texture formats completly?

It seems you are confusing things, mipmap & st3c compressed texture are too different orthogonal things. mipmap works and all gl test using mipmap that we have prove it works. We don't support st3c or any kind of texture compression. In your bugs it's unclear wether you tried to force st3c adevertising or not, doing so might broke the driver as we don't support st3c texture yet. Also quake4 might be doing something uncommon/out of normal GL spec with mipmap.

Yes i only talk about r600g