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Thread: GL_ARB_timer_query among others

  1. #1
    Senior Member Regular Contributor
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    Oct 2010
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    GL_ARB_timer_query among others

    According to the specs this extension is written against OpenGL 3.2 specifications.

    Does it mean if I have OpenGL 3.3 capable card, this extension should be supported ?

    With my system ATI mobility radeon HD 4570 and latest drivers, under Linux (fglrxinfo reports OpenGL 3.3 compatibility profile context), only the GL_EXT_timer_query is defined in glext.h. (not tested under windows yet)

    According to glATI.h, the value GL_TIME_ELAPSED is defined, but none of this extension functions are declared.

    I'm a bit confused.

    1. Should I use glATI.h instead of gl.h and glext.h ? What is this header for exactly ?
    2. Should I download a new version of glext.h ? (and maybe other headers ?)
    3. Should I declare the prototypes of the missing functions by myself ?

    Thanks in advance.

  2. #2
    Senior Member OpenGL Lord
    Join Date
    Mar 2015
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    6,671

    Re: GL_ARB_timer_query among others

    Does it mean if I have OpenGL 3.3 capable card, this extension should be supported ?
    No. What it means is that, when it references locations in the OpenGL spec, it is referencing locations in the 3.2 spec.

  3. #3
    Senior Member Regular Contributor
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    458

    Re: GL_ARB_timer_query among others

    Thank you.

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