(OpenGL) wglCreateContext () context version

Question

(OpenGL) wglCreateContext () context version

I want to know which version of wglCreateContext () will return to me. Will it always return a higher version? Do you have any official links to the documentation?

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opengl

panicq 01 dec. 14 at 15:39

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2 answers

Andon M. Coleman · Answer 1 · 2014-12-01T16:34:02+0000

You need to use `wglCreatContextAttribsARB (...)`

from extension: WGL_ARB_create_context .

Something like this:

    // Request an OpenGL 3.3 context
    const GLuint attribs [] = { WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
                                WGL_CONTEXT_MINOR_VERSION_ARB, 3,
                                0 };

    HGLRC hRC = wglCreateContextAttribsARB (hDC, 0, attribs);

Ironically, this means creating an OpenGL context, loading that extension, destroying the original context, and creating a new one by calling wglCreateContextAttribsARB (...)

. See Extension Specification. I have listed for more details.

When this extension is supported, the call

    wglCreateContext (hdc)

This is equivalent to calling

    wglCreateContextAttribsARB (hdc, 0, NULL)

Bartek banachewicz · Answer 2 · 2014-12-01T15:55:39+0000

No, it is not defined. If you want any guarantees, you need to request a specific version.

You can usually count on a compatibility profile due to the need for legacy support.

(OpenGL) wglCreateContext () context version

You need to use wglCreatContextAttribsARB (...) (adsbygoogle = window.adsbygoogle || []).push({}); from extension: WGL_ARB_create_context .

Something like this:

When this extension is supported, the call

This is equivalent to calling

More articles:

You need to use `wglCreatContextAttribsARB (...)`

from extension: WGL_ARB_create_context .