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Type: Posts; User: NoelC

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  1. Thanks. LoadLibrary has definitely been on my...

    Thanks. LoadLibrary has definitely been on my radar. We use it for some other stuff already so the mechanics of how are clear.

    I'm still digging into GLEW to see how it knows what OpenGL...
  2. Yes, it's the "somehow" that I am hoping...

    Yes, it's the "somehow" that I am hoping someone's already figured out. Thanks.

    -Noel
  3. Basic How To? Windows Application to use Mesa or GPU-accelerated OpenGL via Conig Op

    I'd like to have an option that will select pure software OpenGL via Mesa vs. accelerated OpenGL via the GPU based on a user-chosen configuration option.

    We currently use GLEW to access/control...
  4. Re: GPU RAM Allocation from 32 Bit CPU Memory Space?

    Thanks, but that page does not address the key point of my request.

    Basically it says that devices map their address spaces to the the space below 4GB on a 32 bit system. That's pretty common...
  5. GPU RAM Allocation from 32 Bit CPU Memory Space?

    I've doing research on the modern WDDM and how modern graphics cards with huge amounts of GPU RAM map to 32 bit Windows (e.g., Windows 7) systems.

    I find a lot of documentation about how the...
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    Re: ATI Bug with GL_EXT_texture_sRGB?

    Pierre, I have sent you test software. Please let me know if you do not get the eMail.

    -Noel
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    Re: ATI Bug with GL_EXT_texture_sRGB?

    Thanks, guys. I appreciate the responses.

    I'm on Catalyst 10.7 (and I verified it in 10.6 as well). My system and monitor are set to sRGB and I am set to 32 bit color (not sure whether that is...
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    ATI Bug with GL_EXT_texture_sRGB?

    We're using GL_EXT_texture_sRGB in a Photoshop plugin and seeing a very strange issue on an ATI 4670 system, which I can only think must be a bug...

    We load a texture of modest size using the...
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    Re: Custom Alpha Blending?

    Yes, that's the approach we're taking.

    Sorry if this is a naive question, but is "post-pass" or "second pass" just a matter of rendering something inconsequential over the entire image (e.g., a...
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    Re: Custom Alpha Blending?

    Thanks for your response.

    Unfortunately ARB_framebuffer_sRGB a little too new and we need to reach a wider market than those who have updated systems that support it.

    Our current approach is...
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    Custom Alpha Blending?

    If one were to want to create a custom method of alpha blending, say one that did a gamma 2.2 -> gamma 1.0 conversion, blend per alpha / 1 - alpha, then a gamma 1.0 -> gamma 2.2 conversion, is there...
  12. Re: nVidia: Chging GDI Window Size Clears Back Buffer?

    I'm doing that. The key is that I'm not rendering in the GDI thread, but in a separate thread, and the glitch becomes visible on the screen even though I'm not swapping the buffer into the...
  13. Re: nVidia: Chging GDI Window Size Clears Back Buffer?

    Warms my heart to know I'm on the bleeding edge of developing with OpenGL.

    Isn't anyone else resizing OpenGL windows here? Is it only just about full-screen games?

    Thanks.

    -Noel
  14. nVidia: Chging GDI Window Size Clears Back Buffer?

    This is kind of an advanced newbie issue...

    I have been having a heck of a time with a threaded implementation in which a rendering thread is given a parameter block and set off to render into the...
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    Re: Can't Change Viewport Size on XP, OpenGL 1.1?

    Bah, I found it. It's a Windows bug with the GDI Generic 1.1 implementation of OpenGL.

    http://support.microsoft.com/kb/q272222/

    If it just affected older systems that would be something I...
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    Re: Can't Change Viewport Size on XP, OpenGL 1.1?

    Hi guys, thanks for your responses.

    The code listed above happens when the window size is changing. It's not executed in the UI thread, however; we have a separate rendering thread.

    After the...
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    Can't Change Viewport Size on XP, OpenGL 1.1?

    I'm working on an app that renders OpenGL in a window. The dialog for the app, and the OpenGL-managed window within, is resizeable.

    Upon window size change I am doing the classic commands listed...
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    glViewport change causes image stretch?

    Hi,

    I'm developing in Windows 7 x64, ATI 4670 GPU, Catalyst 10.5 drivers.

    I have a 2D graphics program that is using OpenGL to display a background image with effects rendered over it in a...
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