glXCreateNewContext — create a new GLX rendering context
Specifies the connection to the X server.
Specifies the GLXFBConfig structure with the desired attributes for the context.
Specifies the type of the context to be created. Must be one of
Specifies the context with which to share display lists.
NULL indicates that no sharing is to take place.
Specifies whether rendering is to be done with a direct connection
to the graphics system if possible (
or through the X server (
glXCreateNewContext creates a GLX rendering context and returns its handle.
This context can be used to render into GLX windows, pixmaps, or pixel
glXCreateNewContext fails to create a rendering context,
NULL is returned.
GLX_RGBA_TYPE, then a context that supports RGBA
rendering is created. If
context supporting color-index rendering is created.
render_type is not
then all display-list indexes and definitions are shared by
render_type and by the newly created context.
An arbitrary number of contexts can share a single display-list space.
all rendering contexts that share a single display-list space must
themselves exist in the same 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.
then a direct-rendering context is created if the
implementation supports direct rendering, if the connection is to an X
server that is local, and if a direct-rendering context is available. (An implementation may return an indirect context when
then a rendering context that renders through the X server is always created.
Direct rendering provides a performance advantage in some implementations.
However, direct-rendering contexts cannot be shared outside a single process,
and they may be unable to render to GLX pixmaps.
glXCreateNewContext 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.
NULL is returned if execution fails on the client side.
GLXBadContext is generated if
render_type is not a GLX context
and is not
GLXBadFBConfig is generated if
config is not a valid
BadMatch is generated if the context to be created would not
share the address space or the screen of the context specified by
BadAlloc is generated if the server does not have enough
resources to allocate the new context.
BadValue is generated if
config is not a valid visual (for
example, if a particular GLX implementation does not support it).
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