_c_o_n_f_i_g Specifies a GLXFBConfig structure with the desired
attributes for the window.
_p_i_x_m_a_p Specifies the X pixmap to be used as the rendering area.
_a_t_t_r_i_b__l_i_s_t Currently unused. This must be set to NNNNUUUULLLLLLLL, or be an empty
list (i.e., one in which the first element is NNNNoooonnnneeee).
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
ggggllllXXXXCCCCrrrreeeeaaaatttteeeePPPPiiiixxxxmmmmaaaapppp creates an off-screen rendering area and returns its XID.
Any GLX rendering context that was created with respect to _c_o_n_f_i_g can be
used to render into this window. Use ggggllllXXXXMMMMaaaakkkkeeeeCCCCuuuurrrrrrrreeeennnntttt to associate the
rendering area with a GLX rendering context.
NNNNOOOOTTTTEEEESSSS
ggggllllXXXXCCCCrrrreeeeaaaatttteeeePPPPiiiixxxxmmmmaaaapppp is available only if the GLX version is 1.3 or greater.
If the GLX version is 1.1 or 1.0, the GL version must be 1.0. If the GLX
version is 1.2, then the GL version must be 1.1. If the GLX version is
1.3, then the GL version must be 1.2.
EEEERRRRRRRROOOORRRRSSSS
BBBBaaaaddddMMMMaaaattttcccchhhh is generated if _p_i_x_m_a_p was not created with a visual that
corresponds to _c_o_n_f_i_g.
BBBBaaaaddddMMMMaaaattttcccchhhh is generated if _c_o_n_f_i_g does not support rendering to windows
(e.g., GGGGLLLLXXXX____DDDDRRRRAAAAWWWWAAAABBBBLLLLEEEE____TTTTYYYYPPPPEEEE does not contain GGGGLLLLXXXX____WWWWIIIINNNNDDDDOOOOWWWW____BBBBIIIITTTT).
BBBBaaaaddddWWWWiiiinnnnddddoooowwww is generated if _p_i_x_m_a_p is not a valid window XID.