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KDE SC 4.7 May Utilize OpenGL 3.x For Compositing

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  • #41
    or: Qts Xrender implementation follows the spec and Intel and Nvidia are broken.

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    • #42
      Of course it follows the spec, but it doesn't mean it does so in a way that makes sense and is able to perform well given current GPU hardware. See http://bugreports.qt.nokia.com/browse/QTBUG-7255 for example.

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      • #43
        Originally posted by Tsiolkovsky View Post
        So I guess this means that if the driver doesn't handle it the current (legacy) mode will be used. And if even this isn't posible there is still XRender mode I guess.
        Also afaik VBO's are a pretty common extension even if the drivers don't have a full OpenGL 3.0 implementation. So this shouldn't be an issue, I think...

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        • #44
          VBO = OpenGL 1.5
          FBO = OpenGL 3.0

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          • #45
            So assuming VBO's are really all that's needed, I'd assume classic Mesa drivers with KMS are sufficient Right Now (tm) since they advertise GL_ARB_vertex_buffer_object.

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            • #46
              Originally posted by pingufunkybeat View Post
              VBO = OpenGL 1.5
              FBO = OpenGL 3.0
              Yeah, and the KDE developer was talking of VBO's, not FBO's.

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              • #47
                http://blog.martin-graesslin.com/blo...pipeline-road/

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