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Type: Posts; User: niallm

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    Re: Want to implement EGL APIs

    I would assume that that value is dependent on the EGL implementation. If you're implementing your own version of EGL, then you can define how that value is used internally however you like. For...
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    Source Alpha Blending without an Alpha Buffer

    If I am only doing source alpha blending, do I need to have an alpha buffer for my frame buffer since I wouldn't be using the destination alpha values?

    Thanks!
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    Re: EGLImage Extensions

    Hmm, or is the native pixmap it takes actually a DDraw/DirectX surface?
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    EGLImage Extensions

    Are there any available samples demonstrating how to use the EGLImage extensions targeted for a Windows CE based device? Particularly, I'm not sure what kind of restrictions there are around what...
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    Re: Sharing surfaces across processes

    I'm just curious, what's the use case for this?
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    Re: EGL surface pointer

    I think the EGL_KHR_lock_surface extension might be what you're looking for.
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    Re: Normal Pointer Array Size

    Maybe I'm looking at it wrong, but shouldn't the last parameter to glDrawArrays() be the number of vertices you want to draw, not the number of elements in your vertex array?

    For example: ...
  8. Thread: OpenGL Problem

    by niallm
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    Re: OpenGL Problem

    Khronos only maintains the specifications, it's up to the graphics hardware developers to provide you the drivers that implement them.
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    Re: Multiuple window surface

    What's the EGL error that you're getting? I'm surprised the first call to eglCreateWindowSurface isn't failing since you're passing in a NULL window handle to each call.
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    Re: Existential Extensions

    What kind of extensions are you talking about?

    If they're extensions like EGL_KHR_image or GL_OES_EGL_image, then you would use the appropriate string query functions, such as eglQueryString()...
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    Re: beginner to openGL-ES.. few queries...

    OpenGL ES is just an interface specification. How it is implemented is dependent on the hardware and platform you're targeting.
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    EGL on Windows CE implementation questions

    I have a question regarding how EGL is implemented on Windows CE devices. When you create a window surface and do an eglSwapBuffers, does EGL end up just doing a BitBlt into the window's DC using...
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    Re: Trying to implement EGL in SDL

    Not that this is the cause of your problems, but I noticed this line in your code:


    EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT & EGL_OPENGL_ES_BIT,

    Did you mean to use a "&" instead of a "|"?
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