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glXCreateGLXPixmap()
NAME
glXCreateGLXPixmap - create an off-screen GLX rendering area
SYNOPSIS
GLXPixmap glXCreateGLXPixmap(
Display *dpy,
XVisualInfo *vis,
Pixmap pixmap );
PARAMETERS
dpy Specifies the connection to the X server.
vis 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.
pixmap
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 vis 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 pixmap is used as the front left buffer of the
resulting off-screen rendering area. All other buffers specified by vis,
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 visual,
visualID, screen, and depth elements.
ERRORS
BadMatch is generated if the depth of pixmap does not match the depth value
reported by core X11 for vis, or if pixmap was not created with respect to
the same screen as vis.
BadValue is generated if vis is not a valid XVisualInfo pointer (for
example, if a particular GLX implementation does not support this visual).
BadPixmap is generated if pixmap is not a valid pixmap.
BadAlloc is generated if the server cannot allocate the GLX pixmap.
SEE ALSO
glXCreateContext(3), glXIsDirect(3), glXMakeCurrent(3)
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Index for Section 3 |
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Alphabetical listing for G |
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Top of page |
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