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  • #31
    Originally posted by jonwil View Post
    Anyone know the patent # for this texture patent everyone is talking about and who owns it?
    Don't know the number, but HTC owns it.

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    • #32
      I was talking about the HDR floating point texture thing or whatever it is, not the s3tc patent.

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      • #33
        The ARB_texture_float patent is owned by SGI

        http://www.opengl.org/registry/specs...ture_float.txt
        SGI owns US Patent #6,650,327, issued November 18, 2003. SGI
        believes this patent contains necessary IP for graphics systems
        implementing floating point (FP) rasterization and FP framebuffer
        capabilities.

        SGI will not grant the ARB royalty-free use of this IP for use in
        OpenGL, but will discuss licensing on RAND terms, on an individual
        basis with companies wishing to use this IP in the context of
        conformant OpenGL implementations. SGI does not plan to make any
        special exemption for open source implementations.

        Contact Doug Crisman at SGI Legal for the complete IP disclosure.
        You can view the patent itself here: http://www.google.com/patents/about?...BAJ&dq=6650327

        20 years from the filing date would be June 16, 2018. I think it's standard practice that a lot of these patents are extended for a year or 2 though, so 2020 might be a safer estimate.

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        • #34
          Originally posted by smitty3268 View Post
          http://www.opengl.org/registry/specs...ture_float.txt


          You can view the patent itself here: http://www.google.com/patents/about?...BAJ&dq=6650327

          20 years from the filing date would be June 16, 2018. I think it's standard practice that a lot of these patents are extended for a year or 2 though, so 2020 might be a safer estimate.
          Doesn't it help that the company owning the patent has actually gone bankrupt?

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          • #35
            Originally posted by Azpegath View Post
            Doesn't it help that the company owning the patent has actually gone bankrupt?
            I don't think so - from what i can tell all the assets, which would include the patent, were sold off to another company. That company then renamed itself Silicon Graphics International (old one was Silicon Graphics Inc). So I think the patent is still fully valid and everything. I don't think new management changed anything regarding licensing, since that happened back in 2009 and all the Mesa work relating to it was more recent. You have to assume someone involved reached out to SGI at that time to figure out if they could work out a deal.

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            • #36
              Originally posted by Kayden View Post
              Hopefully! So far, I've been enabling features on all Gen4+ chips, including G45. I believe it should be possible.



              You should have OpenGL 2.1 and GLSL 1.20 support, plus a bunch of extra extensions. I'm pretty sure Gen4 has supported GL 2 since the initial 2006 release...a really long time in any case.



              Eaglelake for desktops, Cantiga if you have a GM45 (mobile). We usually just call them G45/GM45 though.

              Here's a handy codename translator:
              Gen 4 Desktop - Broadwater (BRW) - G965 - GMA X3000
              Gen 4 Mobile - Crestline (CL) - GM965 - GMA X3100
              Gen 4.5 Desktop - Eaglelake (ELK) - G45 - GMA X4500HD
              Gen 4.5 Mobile - Cantiga (CTG) - GM45 - GMA 4500MHD
              Gen 5 - Ironlake (ILK) - HD Graphics (desktop sometimes "Clarkdale", mobile "Arrandale")
              Gen 6 - Sandybridge (SNB) - HD Graphics 2000 (codename GT1) and HD Graphics 3000 (codename GT2).
              just keeping this in mind so the thread is known, from whatever I read it doesn't seem that G31 chipsets would have any improv. with new releases.

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