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Thread: KDE SC 4.7 May Utilize OpenGL 3.x For Compositing

  1. #41
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    or: Qts Xrender implementation follows the spec and Intel and Nvidia are broken.

  2. #42
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    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.

  3. #43
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    Quote 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...

  4. #44
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    VBO = OpenGL 1.5
    FBO = OpenGL 3.0

  5. #45
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    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.

  6. #46
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    Quote 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.

  7. #47
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