Announcement

Collapse
No announcement yet.

Mesa Finishes Up OpenGL 3, Lots Of OpenGL 4 Ahead

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Originally posted by caligula View Post
    You probably mean open source. The display drivers are not GNU and sharing results is open source. Free software is kind of nice but most GNU projects are a bit outdated when it comes to cutting edge technology.
    I think you have the wrong idea of what Free Software is. The Mesa license is Free Software. GNU is Free Software, but Free Software is more than GNU.

    Comment


    • #17
      Originally posted by caligula View Post
      You probably mean open source.
      No, he probably means Free Software. Mesa, Gallium3d and the kernel are all under Free Software licenses.

      You could also refer to it as "open source" and be right, because they are also OSI-approved licenses.

      Comment


      • #18
        Originally posted by Nobu View Post
        Well, seeing as r200 hardware only supports OpenGL 1.3, it can't be that surprising...or were you being faceious?

        Similarly, Sandy Bridge CPUs (which have HD 2000/3000 graphics), support only OpenGL 3.1 at most (had to search deep for that one). So, yeah, you're sort of stuck there... Edit: Oh, is the hardware actually capable of 3.3? Interesting...
        Strange, RadeonFeature matrix claims that 1.4 is possible. See http://xorg.freedesktop.org/wiki/RadeonFeature/

        Comment


        • #19
          Originally posted by stikonas View Post
          Strange, RadeonFeature matrix claims that 1.4 is possible. See http://xorg.freedesktop.org/wiki/RadeonFeature/
          That doesn't sound quite right. It's been a while since I've worked on r200, but IIRC r200 is missing the functionality of 1.4 for depth textures, that is ARB_depth_texture and ARB_shadow. It should support everything else.
          I'm not sure if it could be emulated - note not even r300 can actually do ARB_shadow natively, you have to emulate that functionality in the shader - but r200 only allows for very short shader programs so that could get you into trouble. And IIRC you can't actually emulate it since unlike r300 it cannot sample the required depth buffer formats at all.
          Though I guess software fallback would be possible. But those are useless as hell. (That, of course, didn't stop nvidia announcing GL 1.4 support for GeForce 3/4 cards despite that these chips lacked some of the new blend functionality. Thus forcing apps to use hacks to determine if the cards could really do it as of course the performance hit when using this functionality meant that you needed to avoid this functionality no matter what.)

          Comment


          • #20
            What's the status of GLSL 1.40+ and Geometry shaders for the radeon driver?

            Comment


            • #21
              The catchup game is accelerating now that the whole driver stack is getting better. Hopefully in some time they will be able to implement features which still aren't released in an official GL standard version.

              Comment

              Working...
              X