glxquerycontext(3g) [centos man page]

GLXQUERYCONTEXT(3G)						   OpenGL Manual					       GLXQUERYCONTEXT(3G)

NAME

       glXQueryContext - query context information

C SPECIFICATION

       int glXQueryContext(Display * dpy, GLXContext ctx, int attribute, int * value);

PARAMETERS

       dpy
	   Specifies the connection to the X server.

       ctx
	   Specifies a GLX rendering context.

       attribute
	   Specifies that a context parameter should be retrieved. Must be one of GLX_FBCONFIG_ID, GLX_RENDER_TYPE, or GLX_SCREEN.

       value
	   Contains the return value for attribute.

DESCRIPTION

       glXQueryContext sets value to the value of attribute with respect to ctx.  attribute may be one of the following:

       GLX_FBCONFIG_ID
	   Returns the XID of the GLXFBConfig associated with ctx.

       GLX_RENDER_TYPE
	   Returns the rendering type supported by ctx.

       GLX_SCREEN
	   Returns the screen number associated with ctx.

       Success is returned unless attribute is not a valid GLX context attribute, in which case GLX_BAD_ATTRIBUTE is returned.

       This call may cause a round-trip to the server.

NOTES

       glXQueryContext 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.

ERRORS

       GLXBadContext is generated if ctx does not refer to a valid context.

SEE ALSO

       glXCreateNewContext(), glXGetCurrentContext(), glXQueryVersion(), glXQueryExtensionsString()

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						       GLXQUERYCONTEXT(3G)

GLXCREATEPIXMAP(3G)						   OpenGL Manual					       GLXCREATEPIXMAP(3G)

NAME

       glXCreatePixmap - create an off-screen rendering area

C SPECIFICATION

       GLXPixmap glXCreatePixmap(Display * dpy, GLXFBConfig config, Pixmap pixmap, 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.

       pixmap
	   Specifies the X pixmap to be used as the rendering area.

       attrib_list
	   Currently unused. This must be set to NULL or be an empty list (i.e., one in which the first element is None).

DESCRIPTION

       glXCreatePixmap 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 glXMakeCurrent() to associate the rendering area with a GLX rendering context.

NOTES

       glXCreatePixmap 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.

ERRORS

       BadMatch is generated if pixmap was not created with a visual that corresponds to config.

       BadMatch is generated if config does not support rendering to windows (e.g., GLX_DRAWABLE_TYPE does not contain GLX_WINDOW_BIT).

       BadWindow is generated if pixmap is not a valid window XID.  BadAlloc is generated if there is already a GLXFBConfig associated with
       pixmap.

       BadAlloc is generated if the X server cannot allocate a new GLX window.

       GLXBadFBConfig is generated if config is not a valid GLXFBConfig.

SEE ALSO

       glXChooseFBConfig(), glXCreateGLXPixmap(), glXDestroyWindow(), glXMakeContextCurrent()

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						       GLXCREATEPIXMAP(3G)