centos man page for glxcreatepbuffer

GLXCREATEPBUFFER(3G)						   OpenGL Manual					      GLXCREATEPBUFFER(3G)

NAME
       glXCreatePbuffer - create an off-screen rendering area

C SPECIFICATION
       GLXPbuffer glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int * attrib_list);

PARAMETERS
       dpy
	   Specifies the connection to the X server.

       config
	   Specifies a GLXFBConfig structure with the desired attributes for the window.

       attrib_list
	   Specifies a list of attribute value pairs, which must be terminated with None or NULL. Accepted attributes are GLX_PBUFFER_WIDTH,
	   GLX_PBUFFER_HEIGHT, GLX_PRESERVED_CONTENTS, and GLX_LARGEST_PBUFFER.

DESCRIPTION
       glXCreatePbuffer creates an off-screen rendering area and returns its XID. Any GLX rendering context that was created with respect to
       config can be used to render into this window. Use glXMakeContextCurrent() to associate the rendering area with a GLX rendering context.

       The accepted attributes for a GLXPbuffer are:

       GLX_PBUFFER_WIDTH
	   Specify the pixel width of the requested GLXPbuffer. The default value is 0.

       GLX_PBUFFER_HEIGHT
	   Specify the pixel height of the requested GLXPbuffer. The default value is 0.

       GLX_LARGEST_PBUFFER
	   Specify to obtain the largest available pixel buffer, if the requested allocation would have failed. The width and height of the
	   allocated pixel buffer will never exceed the specified GLX_PBUFFER_WIDTH or GLX_PBUFFER_HEIGHT, respectively. Use glXQueryDrawable() to
	   retrieve the dimensions of the allocated pixel buffer. The default value is False.

       GLX_PRESERVED_CONTENTS
	   Specify if the contents of the pixel buffer should be preserved when a resource conflict occurs. If set to False, the contents of the
	   pixel buffer may be lost at any time. If set to True, or not specified in attrib_list, then the contents of the pixel buffer will be
	   preserved (most likely by copying the contents into main system memory from the frame buffer). In either case, the client can register
	   (using glXSelectEvent(), to receive pixel buffer clobber events that are generated when the pbuffer contents have been preserved or
	   damaged.

       GLXPbuffers contain the color and ancillary buffers specified by config. It is possible to create a pixel buffer with back buffers and to
       swap those buffers using glXSwapBuffers().

NOTES
       glXCreatePbuffer 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.

       GLXPbuffers are allocated from frame buffer resources; applications should consider deallocating them when they are not in use.

ERRORS
       BadAlloc is generated if there are insufficient resources to allocate the requested GLXPbuffer.

       GLXBadFBConfig is generated if config is not a valid GLXFBConfig.

       BadMatch is generated if config does not support rendering to pixel buffers (e.g., GLX_DRAWABLE_TYPE does not contain GLX_PBUFFER_BIT).

SEE ALSO
       glXChooseFBConfig(), glXCreatePbuffer, glXMakeContextCurrent(), glXSelectEvent()

COPYRIGHT
       Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS
       opengl.org

opengl.org							    06/10/2014						      GLXCREATEPBUFFER(3G)