XVisualInfo *visua )

PARAMETERS
       dpy    Specifies the connection to the X server.

       visua  Specifies  the visual that defines the structure of the rendering
              area.  It is a pointer to an XVisualInfo structure, not a  visual
              ID or a pointer to a Visual.

       _param3
              Specifies  the X pixmap that will be used as the front left color
              buffer of the off-screen rendering area.

DESCRIPTION
       glXCreateGLXPixmap creates an off-screen rendering area and returns  its
       XID.   Any  GLX rendering context that was created with respect to visua
       can be used to render into this off-screen area.  Use glXMakeCurrent  to
       associate the rendering area with a GLX rendering context.

       The  X  pixmap identified by _param3 is used as the front left buffer of
       the resulting off-screen rendering area.  All other buffers specified by
       visua,  including  color  buffers  other than the front left buffer, are
       created without externally visible  names.   GLX  pixmaps  with  double-
       buffering  are  supported.   However, glXSwapBuffers is ignored by these
       pixmaps.

       Some implementations may not support GLX pixmaps with  direct  rendering
       contexts.

NOTES
       XVisualInfo is defined in Xutil.h.  It is a structure that includes vis‐
       ual, visualID, screen, and depth elements.

ERRORS
       BadMatch is generated if the depth of _param3 does not match  the  depth
       value reported by core X11 for visua, or if _param3 was not created with
       respect to the same screen as visua.

       BadValue is generated if visua is not a valid XVisualInfo  pointer  (for
       example,  if  a particular GLX implementation does not support this vis‐
       ual).

       BadPixmap is generated if _param3 is not a valid pixmap.

       BadAlloc is generated if the server cannot allocate the GLX pixmap.

SEE ALSO
       glXCreateContext,  glXCreatePixmap,  glXDestoryGLXPixmap,   glXIsDirect,
       glXMakeCurrent

                                                         GLXCREATEGLXPIXMAP(3G)