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  1. I wish I could target GPUs with 1GB of RAM. Only...

    I wish I could target GPUs with 1GB of RAM. Only client side arrays must be available, and this will run on integrated graphics in most cases.
  2. System memory use of client side vertex arrays and VBOs

    I have a 600MB vertex array (40 million points) that I normally render with a single DrawArrays call.



    If I split the call into small 64k batches by adjusting the first index parameter...
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    ARB_debug_output maturity

    How does ARB_debug_output currently compare to the D3D debug runtime? Do the two major vendors offer similar diagnostic capability?

    I haven't used OpenGL in a few years, but I have the choice to...
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    Re: slow transfer speed on fermi cards

    Fermi GeForce. Fermi Quadro is fine.
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    Re: slow transfer speed on fermi cards

    Well, luckily I bought the cheapest Quadro Fermi yesterday, and it is much faster than a high-end GeForce Fermi for ReadPixels and GetTexImage:

    i7 960 at 3.2GHz, Vsync forced off. Both of these...
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    Re: AMD Releases OpenGL 4.0 Drivers

    So do the 5700 and lower 5000 series support double precision natively? I thought they did not.

    Edit: A 5770 supports gpu_shader5 with these drivers, but is this emulated?
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    Re: Wireframe (line draw) and Z-Fighting

    Does anyone know the specifics of how Maya or Max implemented wireframe overlays in the fixed function-only days?
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    Re: Official Bindless Graphics feedback thread

    From the NVIDIA release: "Bindless Graphics is available starting with NVIDIA Release 185 drivers for hardware G80 and up."
  9. Re: switching between FBOs with mipmapped textures

    Have you called glHint( GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST ) or anything similar?
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    Re: System memory copies of OpenGL resources

    The following presentation answers many of my questions:

    http://www.xnagamefest.com/presentations.htm
    http://download.microsoft.com/download/e...576%20Bytes.zip
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    System memory copies of OpenGL resources

    I seem to remember a discussion about this a long time ago, but I can't find it. I have a very poor recollection of how this all works, and haven't touched OpenGL in a year.

    There is no way to...
  12. Reducing precision errors within a skeletal hierarchy

    Am I asking too much of single-precision floats?

    When the root of a skeleton transformed using the following code is only 3000 units from the origin, I am seeing very noticeable errors, where the...
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    Re: MAX_VARYING_FLOATs on 8800 GTS

    Trying using 100-series drivers found at laptopvideo2go.com. Those fixed some varying allocation problems I had, but not all.
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    Re: Skybox to Skydome

    HDRShop does panoramic transforms.
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    Re: Radar Display Imaging

    How about posting some movies or screenshots so we can comment on your existing stuff, too? :)
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    EXT_texture_array performance

    Does this reduce the cost of switching textures vs. many BindTextures? Is most (all?) of the cost of BindTexture just from the driver call?
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    Re: S3TC/DXT compression by CPU in thread

    Do you query the texture's internal format after it's created? What conditions make the driver reject compression?
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    Re: Multisample FBO

    That extension is only supported in the 100 series drivers, which I think are Vista-only.

    Try using the other extension I mentioned for timing; it's very simple.
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    Re: Multisample FBO

    Are you timing with EXT_timer_query?
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    Re: Multisample FBO

    It's a work in progress, but it does what it's supposed to do.

    Multisample blits are currently inverted on NVIDIA's drivers (95 and 100 series)

    namespace {
    GLenum GetValidFBODepthFormat() {...
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    Re: NPOT with GL_ARB_texture_npot

    From the spec:
    There is no additional procedural or enumerant api introduced by this
    extension except that an implementation which exports the extension
    string will allow an...
  22. Re: I modified a simple program to introduce A strange problem about FBO!

    You're probably only allowed to draw to 4 buffers. You can query this by:

    GLuint maxbuffers;
    glGetIntergeri(GL_MAX_DRAW_BUFFERS, &maxbuffers);
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    Re: GF 7950 GT: no GL extensions found..

    Again, if you can report the driver version your life will be much simpler.
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    Re: multithreaded OpenGL WTF?

    The option is available on my 8 series cards.
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    Re: multithreaded OpenGL WTF?

    I see it under 97.02 on my 8800GTX. Do you have a multi-core or -cpu system?
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