static int driUnbindContext(__DRIcontext *pcp)
{
__DRIdrawable *pdp;
__DRIdrawable *prp;
if (pcp == NULL)
return GL_FALSE;
pdp = pcp->driDrawablePriv;
prp = pcp->driReadablePriv;
/* already unbound */
if (!pdp && !prp)
return GL_TRUE;
driDriverAPI.UnbindContext(pcp);
dri_put_drawable(pdp);
if (prp != pdp) {
dri_put_drawable(prp);
}
pcp->driDrawablePriv = NULL;
pcp->driReadablePriv = NULL;
return GL_TRUE;
}
/**
* Unbind context.
*
* \param scrn the screen.
* \param gc context.
*
* \return \c GL_TRUE on success, or \c GL_FALSE on failure.
*
* \internal
* This function calls __DriverAPIRec::UnbindContext, and then decrements
* __DRIdrawableRec::refcount which must be non-zero for a successful
* return.
*
* While casting the opaque private pointers associated with the parameters
* into their respective real types it also assures they are not \c NULL.
*/
static int driUnbindContext(__DRIcontext *pcp)
{
__DRIscreen *psp;
__DRIdrawable *pdp;
__DRIdrawable *prp;
/*
** Assume error checking is done properly in glXMakeCurrent before
** calling driUnbindContext.
*/
if (pcp == NULL)
return GL_FALSE;
psp = pcp->driScreenPriv;
pdp = pcp->driDrawablePriv;
prp = pcp->driReadablePriv;
/* already unbound */
if (!pdp && !prp)
return GL_TRUE;
/* Let driver unbind drawable from context */
(*psp->DriverAPI.UnbindContext)(pcp);
assert(pdp);
if (pdp->refcount == 0) {
/* ERROR!!! */
return GL_FALSE;
}
dri_put_drawable(pdp);
if (prp != pdp) {
if (prp->refcount == 0) {
/* ERROR!!! */
return GL_FALSE;
}
dri_put_drawable(prp);
}
/* XXX this is disabled so that if we call SwapBuffers on an unbound
* window we can determine the last context bound to the window and
* use that context's lock. (BrianP, 2-Dec-2000)
*/
pcp->driDrawablePriv = pcp->driReadablePriv = NULL;
return GL_TRUE;
}
/**
* Unbind context.
*
* \param scrn the screen.
* \param gc context.
*
* \return \c GL_TRUE on success, or \c GL_FALSE on failure.
*
* \internal
* This function calls __DriverAPIRec::UnbindContext, and then decrements
* __DRIdrawableRec::refcount which must be non-zero for a successful
* return.
*
* While casting the opaque private pointers associated with the parameters
* into their respective real types it also assures they are not \c NULL.
*/
static int driUnbindContext(__DRIcontext *pcp)
{
__DRIdrawable *pdp;
__DRIdrawable *prp;
/*
** Assume error checking is done properly in glXMakeCurrent before
** calling driUnbindContext.
*/
if (pcp == NULL)
return GL_FALSE;
/*
** Call driUnbindContext before checking for valid drawables
** to handle surfaceless contexts properly.
*/
pcp->driScreenPriv->driver->UnbindContext(pcp);
pdp = pcp->driDrawablePriv;
prp = pcp->driReadablePriv;
/* already unbound */
if (!pdp && !prp)
return GL_TRUE;
assert(pdp);
if (pdp->refcount == 0) {
/* ERROR!!! */
return GL_FALSE;
}
dri_put_drawable(pdp);
if (prp != pdp) {
if (prp->refcount == 0) {
/* ERROR!!! */
return GL_FALSE;
}
dri_put_drawable(prp);
}
pcp->driDrawablePriv = NULL;
pcp->driReadablePriv = NULL;
return GL_TRUE;
}
static void
driDestroyDrawable(__DRIdrawable *pdp)
{
/*
* The loader's data structures are going away, even if pdp itself stays
* around for the time being because it is currently bound. This happens
* when a currently bound GLX pixmap is destroyed.
*
* Clear out the pointer back into the loader's data structures to avoid
* accessing an outdated pointer.
*/
pdp->loaderPrivate = NULL;
dri_put_drawable(pdp);
}
static void
driDestroyDrawable(__DRIdrawable *pdp)
{
dri_put_drawable(pdp);
}