diff options
| -rw-r--r-- | src/glx/x11/glxext.c | 238 |
1 files changed, 87 insertions, 151 deletions
diff --git a/src/glx/x11/glxext.c b/src/glx/x11/glxext.c index ab2795efbe..7e9327b59e 100644 --- a/src/glx/x11/glxext.c +++ b/src/glx/x11/glxext.c @@ -1480,12 +1480,17 @@ static Bool SendMakeCurrentRequest( Display *dpy, CARD8 opcode, * \warning * This function assumes that \c dpy is locked with \c LockDisplay on entry. */ -static Bool SendMakeCurrentRequest( Display *dpy, CARD8 opcode, - GLXContextID gc_id, GLXContextTag gc_tag, - GLXDrawable draw, GLXDrawable read, - xGLXMakeCurrentReply * reply ) +static Bool SendMakeCurrentRequest(Display *dpy, CARD8 opcode, + GLXContextID gc_id, GLXContextTag gc_tag, + GLXDrawable draw, GLXDrawable read, + xGLXMakeCurrentReply *reply) { - if ( draw == read ) { + Bool ret; + + + LockDisplay(dpy); + + if (draw == read) { xGLXMakeCurrentReq *req; GetReq(GLXMakeCurrent,req); @@ -1503,7 +1508,7 @@ static Bool SendMakeCurrentRequest( Display *dpy, CARD8 opcode, * not the SGI extension. */ - if ( (priv->majorVersion > 1) || (priv->minorVersion >= 3) ) { + if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) { xGLXMakeContextCurrentReq *req; GetReq(GLXMakeContextCurrent,req); @@ -1531,7 +1536,12 @@ static Bool SendMakeCurrentRequest( Display *dpy, CARD8 opcode, } } - return _XReply(dpy, (xReply*) reply, 0, False); + ret = _XReply(dpy, (xReply*) reply, 0, False); + + UnlockDisplay(dpy); + SyncHandle(); + + return ret; } @@ -1554,161 +1564,93 @@ static Bool UnbindContextWrapper( GLXContext gc ) #endif /* GLX_DIRECT_RENDERING */ -/* -** Make a particular context current. -** NOTE: this is in this file so that it can access dummyContext. -*/ +/** + * Make a particular context current. + * + * \note This is in this file so that it can access dummyContext. + */ USED static Bool MakeContextCurrent(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext gc) { xGLXMakeCurrentReply reply; - GLXContext oldGC; - CARD8 opcode, oldOpcode; - Bool sentRequestToOldDpy = False; - Bool bindReturnValue = True; + const GLXContext oldGC = __glXGetCurrentContext(); + const CARD8 opcode = __glXSetupForCommand(dpy); + const CARD8 oldOpcode = ((gc == oldGC) || (oldGC == &dummyContext)) + ? opcode : __glXSetupForCommand(oldGC->currentDpy); + Bool bindReturnValue; + - opcode = __glXSetupForCommand(dpy); - if (!opcode) { + if (!opcode || !oldOpcode) { return GL_FALSE; } - /* - ** Make sure that the new context has a nonzero ID. In the request, - ** a zero context ID is used only to mean that we bind to no current - ** context. - */ + /* Make sure that the new context has a nonzero ID. In the request, + * a zero context ID is used only to mean that we bind to no current + * context. + */ if ((gc != NULL) && (gc->xid == None)) { return GL_FALSE; } - oldGC = __glXGetCurrentContext(); - oldOpcode = (gc == oldGC) ? opcode : __glXSetupForCommand(oldGC->currentDpy); - if (!oldOpcode) { +#ifndef GLX_DIRECT_RENDERING + if (gc && gc->isDirect) { return GL_FALSE; } - - if ((dpy != oldGC->currentDpy || (gc && gc->isDirect)) && - !oldGC->isDirect && oldGC != &dummyContext) { - /* - ** We are either switching from one dpy to another and have to - ** send a request to the previous dpy to unbind the previous - ** context, or we are switching away from a indirect context to - ** a direct context and have to send a request to the dpy to - ** unbind the previous context. - */ - sentRequestToOldDpy = True; - LockDisplay(oldGC->currentDpy); - if ( ! SendMakeCurrentRequest( oldGC->currentDpy, oldOpcode, None, - oldGC->currentContextTag, None, None, - &reply ) ) { - /* The make current failed. Just return GL_FALSE. */ - UnlockDisplay(oldGC->currentDpy); - SyncHandle(); - return GL_FALSE; - } - - oldGC->currentContextTag = 0; - } +#endif _glapi_check_multithread(); #ifdef GLX_DIRECT_RENDERING - /* Unbind the old direct rendering context */ - if (oldGC->isDirect) { - if (oldGC->driContext.private) { - if (! UnbindContextWrapper( oldGC )) { - /* The make current failed. Just return GL_FALSE. */ - return GL_FALSE; - } - } - oldGC->currentContextTag = 0; - } - /* Bind the direct rendering context to the drawable */ if (gc && gc->isDirect) { - if (gc->driContext.private) { - bindReturnValue = BindContextWrapper( dpy, gc, draw, read ); - } - } else { + bindReturnValue = (gc->driContext.private) + ? BindContextWrapper(dpy, gc, draw, read) + : False; + } else #endif + { /* Send a glXMakeCurrent request to bind the new context. */ - LockDisplay(dpy); - - bindReturnValue = SendMakeCurrentRequest( dpy, opcode, - gc ? gc->xid : None, - oldGC->currentContextTag, - draw, read, &reply ); - UnlockDisplay(dpy); -#ifdef GLX_DIRECT_RENDERING + bindReturnValue = + SendMakeCurrentRequest(dpy, opcode, gc ? gc->xid : None, + (dpy != oldGC->currentDpy) + ? None : oldGC->currentContextTag, + draw, read, &reply); } -#endif if (!bindReturnValue) { - /* The make current failed. */ - if (gc && !gc->isDirect) { - SyncHandle(); - } + return False; + } + + if ((dpy != oldGC->currentDpy || (gc && gc->isDirect)) && + !oldGC->isDirect && oldGC != &dummyContext) { + xGLXMakeCurrentReply dummy_reply; + /* We are either switching from one dpy to another and have to + * send a request to the previous dpy to unbind the previous + * context, or we are switching away from a indirect context to + * a direct context and have to send a request to the dpy to + * unbind the previous context. + */ + (void) SendMakeCurrentRequest(oldGC->currentDpy, oldOpcode, None, + oldGC->currentContextTag, None, None, + & dummy_reply); + } #ifdef GLX_DIRECT_RENDERING - /* If the old context was direct rendering, then re-bind to it. */ - if (oldGC->isDirect) { - if (oldGC->driContext.private) { - if (! BindContextWrapper( oldGC->currentDpy, oldGC, - oldGC->currentDrawable, - oldGC->currentReadable )) { - /* - ** The request failed; this cannot happen with the - ** current API. If in the future the API is - ** extended to allow context sharing between - ** clients, then this may fail (because another - ** client may have grabbed the context); in that - ** case, we cannot undo the previous request, and - ** cannot adhere to the "no-op" behavior. - */ - } - } - } else -#endif - /* - ** If we had just sent a request to a previous dpy, we have to - ** undo that request (because if a command fails, it should act - ** like a no-op) by making current to the previous context and - ** drawable. - */ - if (sentRequestToOldDpy) { - if ( !SendMakeCurrentRequest( oldGC->currentDpy, oldOpcode, - oldGC->xid, 0, - oldGC->currentDrawable, - oldGC->currentReadable, &reply ) ) { - UnlockDisplay(oldGC->currentDpy); - SyncHandle(); - /* - ** The request failed; this cannot happen with the - ** current API. If in the future the API is extended to - ** allow context sharing between clients, then this may - ** fail (because another client may have grabbed the - ** context); in that case, we cannot undo the previous - ** request, and cannot adhere to the "no-op" behavior. - */ - } - else { - UnlockDisplay(oldGC->currentDpy); - } - oldGC->currentContextTag = reply.contextTag; - } - return GL_FALSE; + else if (oldGC->isDirect && oldGC->driContext.private) { + (void) UnbindContextWrapper(oldGC); } +#endif + /* Update our notion of what is current */ __glXLock(); if (gc == oldGC) { - /* - ** Even though the contexts are the same the drawable might have - ** changed. Note that gc cannot be the dummy, and that oldGC - ** cannot be NULL, therefore if they are the same, gc is not - ** NULL and not the dummy. - */ + /* Even though the contexts are the same the drawable might have + * changed. Note that gc cannot be the dummy, and that oldGC + * cannot be NULL, therefore if they are the same, gc is not + * NULL and not the dummy. + */ gc->currentDrawable = draw; gc->currentReadable = read; } else { @@ -1720,11 +1662,10 @@ USED static Bool MakeContextCurrent(Display *dpy, GLXDrawable draw, oldGC->currentContextTag = 0; if (oldGC->xid == None) { - /* - ** We are switching away from a context that was - ** previously destroyed, so we need to free the memory - ** for the old handle. - */ + /* We are switching away from a context that was + * previously destroyed, so we need to free the memory + * for the old handle. + */ #ifdef GLX_DIRECT_RENDERING /* Destroy the old direct rendering context */ if (oldGC->isDirect) { @@ -1740,35 +1681,30 @@ USED static Bool MakeContextCurrent(Display *dpy, GLXDrawable draw, } if (gc) { __glXSetCurrentContext(gc); -#ifdef GLX_DIRECT_RENDERING + + gc->currentDpy = dpy; + gc->currentDrawable = draw; + gc->currentReadable = read; + if (!gc->isDirect) { if (!IndirectAPI) IndirectAPI = __glXNewIndirectAPI(); _glapi_set_dispatch(IndirectAPI); -# ifdef GLX_USE_APPLEGL + +#ifdef GLX_USE_APPLEGL do { extern void XAppleDRIUseIndirectDispatch(void); XAppleDRIUseIndirectDispatch(); } while (0); -# endif - } -#else - /* if not direct rendering, always need indirect dispatch */ - if (!IndirectAPI) - IndirectAPI = __glXNewIndirectAPI(); - _glapi_set_dispatch(IndirectAPI); #endif - gc->currentDpy = dpy; - gc->currentDrawable = draw; - gc->currentReadable = read; - if ( ! gc->isDirect ) { - __GLXattribute * state = (__GLXattribute *)(gc->client_state_private); + __GLXattribute *state = + (__GLXattribute *)(gc->client_state_private); gc->currentContextTag = reply.contextTag; - if ( state->array_state == NULL ) { - (void) glGetString( GL_EXTENSIONS ); - (void) glGetString( GL_VERSION ); + if (state->array_state == NULL) { + (void) glGetString(GL_EXTENSIONS); + (void) glGetString(GL_VERSION); __glXInitVertexArrayState(gc); } } |