return the current drawable
GLXDrawable glXGetCurrentDrawable( |
glXGetCurrentDrawable returns the current drawable,
as specified by glXMakeCurrent.
If there is no current drawable,
None is returned.
glXGetCurrentDrawable returns client-side information.
It does not make a round trip to the server.
glXCreateGLXPixmap, glXGetCurrentContext, glXGetCurrentDisplay, glXGetCurrentReadDrawable, glXMakeCurrent
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