77 lines
2.3 KiB
Plaintext
77 lines
2.3 KiB
Plaintext
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'\"! eqn | mmdoc
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'\"macro stdmacro
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.ds Vn Version 1.2
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.ds Dt 6 March 1997
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.ds Re Release 1.2.0
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.ds Dp Feb 16 02:56
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.ds Dm Feb 10 17:2
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.ds Xs 62493 5 xcreateglxpixmap.gl
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.TH GLXCREATEGLXPIXMAP
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.SH NAME
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glXCreateGLXPixmap
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\- create an off-screen GLX rendering area
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.SH C SPECIFICATION
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GLXPixmap \f3glXCreateGLXPixmap\fP(
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Display \fI*dpy\fP,
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.nf
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.ta \w'\f3GLXPixmap \fPglXCreateGLXPixmap( 'u
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XVisualInfo \fI*vis\fP,
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Pixmap \fIpixmap\fP )
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.fi
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.EQ
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delim $$
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.EN
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.SH PARAMETERS
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.TP \w'\fIpixmap\fP\ \ 'u
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\f2dpy\fP
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Specifies the connection to the X server.
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.TP
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\f2vis\fP
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Specifies the visual that defines the structure of the rendering area.
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It is a pointer to an \f3XVisualInfo\fP structure,
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not a visual ID or a pointer to a \f3Visual\fP.
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.TP
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\f2pixmap\fP
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Specifies the X pixmap that will be used as the front left color buffer
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of the off-screen rendering area.
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.SH DESCRIPTION
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\f3glXCreateGLXPixmap\fP creates an off-screen rendering area and returns its XID.
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Any GLX rendering context that was created with respect to \f2vis\fP
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can be used to render into this off-screen area.
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Use \f3glXMakeCurrent\fP to associate the rendering area with a GLX
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rendering context.
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.P
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The X pixmap identified by \f2pixmap\fP is used as the front left buffer of the
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resulting off-screen rendering area.
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All other buffers specified by \f2vis\fP,
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including color buffers other than the front left buffer,
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are created without externally visible names.
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GLX pixmaps with double-buffering are supported.
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However, \f3glXSwapBuffers\fP is ignored by these pixmaps.
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.P
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Some implementations may not support GLX pixmaps with direct rendering
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contexts.
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.SH NOTES
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\f3XVisualInfo\fP is defined in \f2Xutil.h.\fP
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It is a structure that includes \f2visual\fP, \f2visualID\fP, \f2screen\fP, and
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\f2depth\fP elements.
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.SH ERRORS
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\f3BadMatch\fP is generated if the depth of \f2pixmap\fP does not match
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the depth value reported by core X11 for \f2vis\fP,
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or if \f2pixmap\fP was not created with respect to the same screen as \f2vis\fP.
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.P
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\f3BadValue\fP is generated
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if \f2vis\fP is not a valid XVisualInfo pointer (for example, if a
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particular GLX implementation does not support this visual).
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.P
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\f3BadPixmap\fP is generated if \f2pixmap\fP is not a valid pixmap.
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.P
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\f3BadAlloc\fP is generated if the server cannot allocate the GLX
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pixmap.
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.SH SEE ALSO
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\f3glXCreateContext\fP,
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\f3glXIsDirect\fP,
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\f3glXMakeCurrent\fP
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