waffle_get_proc_address3
Query address of opengl functions
Usage
#include <waffle.h>
void* waffle_get_proc_address(const char *name);
Overview
waffle_get_proc_address()
On GLX, this redirects to glXGetProcAddress(3). On EGL, this redirects to eglGetProcAddress(3). On CGL, this function returns NULL because there exists no CGLGetProcAdress(). On WGL, this redirects to wglGetProcAddress(3).
Some aspects of this function's behavior are platform-specific and non-intuitive. For example,
• If the queried function is not available, waffle_get_proc_address() may return a non-null pointer.
• If the queried function is statically exposed by the OpenGL library of a given API, then waffle_get_proc_address() may return a NULL.
• Under Windows (WGL) a current context must be available before executing the function. Otherwise waffle_get_proc_address() may return a NULL.
For details on this function's behavior, see the specification for the relevant platform: the GLX 1.4 Specification[1] the EGL 1.4 Specification[2] or the MSDN article[3].
Errors
See waffle_error(3) for the complete list of waffle's error codes.
No errors are specific to any functions listed in this manual page.
Issues
Please report bugs or and feature requests to https://gitlab.freedesktop.org/mesa/waffle/issues.
Notes
- 1.
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GLX 1.4 Specification
http://www.opengl.org/registry/doc/glx1.4.pdf
- 2.
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EGL 1.4 Specification
http://www.khronos.org/registry/egl/specs/eglspec.1.4.20110406.pdf
- 3.
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MSDN article
http://msdn.microsoft.com/en-gb/library/windows/desktop/dd374386(v=vs.85).aspx
Releases
6 releases since Debian 8 (Jessie); the text changed 5 times.