glx: Replace DRI2GetMSC custom protocol with XCB.

Reviewed-by: Chad Versace <chad.versace@linux.intel.com>

src/glx/dri2.c

@@ -585,39 +585,6 @@ void DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
 }
 #endif
 
-#ifdef X_DRI2GetMSC
-Bool DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc,
-		CARD64 *sbc)
-{
-    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
-    xDRI2GetMSCReq *req;
-    xDRI2MSCReply rep;
-
-    XextCheckExtension (dpy, info, dri2ExtensionName, False);
-
-    LockDisplay(dpy);
-    GetReq(DRI2GetMSC, req);
-    req->reqType = info->codes->major_opcode;
-    req->dri2ReqType = X_DRI2GetMSC;
-    req->drawable = drawable;
-
-    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
-	UnlockDisplay(dpy);
-	SyncHandle();
-	return False;
-    }
-
-    *ust = vals_to_card64(rep.ust_lo, rep.ust_hi);
-    *msc = vals_to_card64(rep.msc_lo, rep.msc_hi);
-    *sbc = vals_to_card64(rep.sbc_lo, rep.sbc_hi);
-
-    UnlockDisplay(dpy);
-    SyncHandle();
-
-    return True;
-}
-#endif
-
 #ifdef X_DRI2SwapInterval
 void DRI2SwapInterval(Display *dpy, XID drawable, int interval)
 {

src/glx/dri2.h

@@ -89,9 +89,6 @@ extern void
 DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
 		CARD64 remainder, CARD64 *count);
 
-extern Bool
-DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc, CARD64 *sbc);
-
 extern void
 DRI2SwapInterval(Display *dpy, XID drawable, int interval);
 

src/glx/dri2_glx.c

@@ -432,26 +432,24 @@ dri2CreateDrawable(struct glx_screen *base, XID xDrawable,
    return &pdraw->base;
 }
 
-#ifdef X_DRI2GetMSC
-
 static int
 dri2DrawableGetMSC(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
 		   int64_t *ust, int64_t *msc, int64_t *sbc)
 {
-   CARD64 dri2_ust, dri2_msc, dri2_sbc;
-   int ret;
+   xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
+   xcb_dri2_get_msc_cookie_t get_msc_cookie;
+   xcb_dri2_get_msc_reply_t *get_msc_reply;
 
-   ret = DRI2GetMSC(psc->dpy, pdraw->xDrawable,
-		    &dri2_ust, &dri2_msc, &dri2_sbc);
-   *ust = dri2_ust;
-   *msc = dri2_msc;
-   *sbc = dri2_sbc;
+   get_msc_cookie = xcb_dri2_get_msc_unchecked(c, pdraw->xDrawable);
+   get_msc_reply = xcb_dri2_get_msc_reply(c, get_msc_cookie, NULL);
+   *ust = merge_counter(get_msc_reply->ust_hi, get_msc_reply->ust_lo);
+   *msc = merge_counter(get_msc_reply->msc_hi, get_msc_reply->msc_lo);
+   *sbc = merge_counter(get_msc_reply->sbc_hi, get_msc_reply->sbc_lo);
+   free(get_msc_reply);
 
-   return ret;
+   return 0;
 }
 
-#endif
-
 static int
 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 	       int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
@@ -1147,18 +1145,14 @@ dri2CreateScreen(int screen, struct glx_display * priv)
    psp->getSwapInterval = NULL;
 
    if (pdp->driMinor >= 2) {
-#ifdef X_DRI2GetMSC
       psp->getDrawableMSC = dri2DrawableGetMSC;
-#endif
       psp->waitForMSC = dri2WaitForMSC;
       psp->waitForSBC = dri2WaitForSBC;
 #ifdef X_DRI2SwapInterval
       psp->setSwapInterval = dri2SetSwapInterval;
       psp->getSwapInterval = dri2GetSwapInterval;
 #endif
-#if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
       __glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
-#endif
    }
 
    /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always