SuSE 11.3 - man page for glxcopycontext (suse section 3gl)
|Linux & Unix Commands - Search Man Pages
glXCopyContext - copy state from one rendering context to another
void glXCopyContext( Display *dpy,
unsigned long mask )
dpy Specifies the connection to the X server.
src Specifies the source context.
dst Specifies the destination context.
mask Specifies which portions of src state are to be copied to dst.
glXCopyContext copies selected groups of state variables from src to dst. mask indicates
which groups of state variables are to be copied. mask contains the bitwise OR of the
same symbolic names that are passed to the GL command glPushAttrib. The single symbolic
constant GL_ALL_ATTRIB_BITS can be used to copy the maximum possible portion of rendering
The copy can be done only if the renderers named by src and dst share an address space.
Two rendering contexts share an address space if both are nondirect using the same server,
or if both are direct and owned by a single process. Note that in the nondirect case it
is not necessary for the calling threads to share an address space, only for their related
rendering contexts to share an address space.
Not all values for GL state can be copied. For example, pixel pack and unpack state, ren-
der mode state, and select and feedback state are not copied. The state that can be
copied is exactly the state that is manipulated by the GL command
An implicit glFlush is done by glXCopyContext if src is the current context for the call-
A process is a single execution environment, implemented in a single address space, con-
sisting of one or more threads.
A thread is one of a set of subprocesses that share a single address space, but maintain
separate program counters, stack spaces, and other related global data. A thread that is
the only member of its subprocess group is equivalent to a process.
BadMatch is generated if rendering contexts src and dst do not share an address space or
were not created with respect to the same screen.
BadAccess is generated if dst is current to any thread (including the calling thread) at
the time glXCopyContext is called.
GLXBadCurrentWindow is generated if src is the current context and the current drawable is
a window that is no longer valid.
GLXBadContext is generated if either src or dst is not a valid GLX context.
glPushAttrib, glXCreateContext, glXIsDirect
All times are GMT -4. The time now is 07:10 PM.