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S3TC => r600{c,g}

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  • #41
    afaik, s3tc works in mesain two ways:

    1)rgb/rgba texture compressed with help of libtxc_dxtn and sent to gpu

    2) s3tc compressed texture sent to gpu

    so, why not just skip compression in first case, and change texture type to GL_RGB/RGBA

    in second case - decompress texture, chnage type and send to gpu

    so bye bye s3tc then

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    • #42
      by "bye bye" I mean - problem with s3tc supprot by specific card will be solved forever, not about patents

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      • #43
        Originally posted by whizse View Post
        The bad news is that S3TC isn't the only patented stuff in GL3:
        http://www.x.org/wiki/Events/XDC2009...OpenGL3andMesa
        Oh, speak of the devil... Luca Barbieri have implemented floating point textures and render targets, will be interested to see how the patent side of things will be handled.

        Of course also interesting since it's another large part of GL3 - and especially exciting for everyone who lusts after Unigine on free drivers

        http://lists.freedesktop.org/archive...st/002562.html

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        • #44
          Go OpenGL3 in Mesa, go go go!

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          • #45
            Originally posted by whizse View Post
            Interesting, except for NWN I have played all those games with S3TC enabled on r300g, and I never noticed anything screwed up.

            Is there a bug report open for this?
            I'm happy to say that I'm wrong. I don't know when this was resolved, but doom3 and ut2004 both ran just fine here with r300g + s3tc. Now I can only hope the same happens for r600 (classic or gallium) sometime soon.

            Adam

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            • #46
              Originally posted by adamk View Post
              I'm happy to say that I'm wrong. I don't know when this was resolved, but doom3 and ut2004 both ran just fine here with r300g + s3tc. Now I can only hope the same happens for r600 (classic or gallium) sometime soon.
              Wonder if it requires RE work.

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              • #47
                Anyone tried Doom3 on r600c recently?

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                • #48
                  Originally posted by pingufunkybeat View Post
                  Anyone tried Doom3 on r600c recently?
                  Doom3:

                  Intro movies : OK
                  Menu : OK
                  Hang after loading level.

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                  • #49
                    Originally posted by RavFX View Post
                    Doom3:

                    Intro movies : OK
                    Menu : OK
                    Hang after loading level.
                    If you are running recent/git kernel it could be -

                    r600 CS parser fixes

                    Which seems to regress doom3 demo and ut2004 demo (dies at nvidia ad that it starts with).

                    It's a known issue on the mailing list.

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                    • #50
                      Similiar error causes Heroes of Newerth to crash as well

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