xserver

xserver with xephyr scale patch
git clone https://git.neptards.moe/u3shit/xserver.git
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glamor_sync.c (4123B)

      1 /*
      2  * Copyright © 2014 Keith Packard
      3  *
      4  * Permission to use, copy, modify, distribute, and sell this software and its
      5  * documentation for any purpose is hereby granted without fee, provided that
      6  * the above copyright notice appear in all copies and that both that copyright
      7  * notice and this permission notice appear in supporting documentation, and
      8  * that the name of the copyright holders not be used in advertising or
      9  * publicity pertaining to distribution of the software without specific,
     10  * written prior permission.  The copyright holders make no representations
     11  * about the suitability of this software for any purpose.  It is provided "as
     12  * is" without express or implied warranty.
     13  *
     14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
     15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
     16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
     17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
     18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
     19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
     20  * OF THIS SOFTWARE.
     21  */
     22 
     23 
     24 #include "glamor_priv.h"
     25 #include "misyncshm.h"
     26 #include "misyncstr.h"
     27 
     28 #if XSYNC
     29 /*
     30  * This whole file exists to wrap a sync fence trigger operation so
     31  * that we can flush GL to provide serialization between the server
     32  * and the shm fence client
     33  */
     34 
     35 static DevPrivateKeyRec glamor_sync_fence_key;
     36 
     37 struct glamor_sync_fence {
     38         SyncFenceSetTriggeredFunc set_triggered;
     39 };
     40 
     41 static inline struct glamor_sync_fence *
     42 glamor_get_sync_fence(SyncFence *fence)
     43 {
     44     return (struct glamor_sync_fence *) dixLookupPrivate(&fence->devPrivates, &glamor_sync_fence_key);
     45 }
     46 
     47 static void
     48 glamor_sync_fence_set_triggered (SyncFence *fence)
     49 {
     50 	ScreenPtr screen = fence->pScreen;
     51 	glamor_screen_private *glamor = glamor_get_screen_private(screen);
     52 	struct glamor_sync_fence *glamor_fence = glamor_get_sync_fence(fence);
     53 
     54 	/* Flush pending rendering operations */
     55         glamor_make_current(glamor);
     56         glFlush();
     57 
     58 	fence->funcs.SetTriggered = glamor_fence->set_triggered;
     59 	fence->funcs.SetTriggered(fence);
     60 	glamor_fence->set_triggered = fence->funcs.SetTriggered;
     61 	fence->funcs.SetTriggered = glamor_sync_fence_set_triggered;
     62 }
     63 
     64 static void
     65 glamor_sync_create_fence(ScreenPtr screen,
     66                         SyncFence *fence,
     67                         Bool initially_triggered)
     68 {
     69 	glamor_screen_private *glamor = glamor_get_screen_private(screen);
     70 	SyncScreenFuncsPtr screen_funcs = miSyncGetScreenFuncs(screen);
     71 	struct glamor_sync_fence *glamor_fence = glamor_get_sync_fence(fence);
     72 
     73 	screen_funcs->CreateFence = glamor->saved_procs.sync_screen_funcs.CreateFence;
     74 	screen_funcs->CreateFence(screen, fence, initially_triggered);
     75 	glamor->saved_procs.sync_screen_funcs.CreateFence = screen_funcs->CreateFence;
     76 	screen_funcs->CreateFence = glamor_sync_create_fence;
     77 
     78 	glamor_fence->set_triggered = fence->funcs.SetTriggered;
     79 	fence->funcs.SetTriggered = glamor_sync_fence_set_triggered;
     80 }
     81 #endif
     82 
     83 Bool
     84 glamor_sync_init(ScreenPtr screen)
     85 {
     86 #if XSYNC
     87 	glamor_screen_private   *glamor = glamor_get_screen_private(screen);
     88 	SyncScreenFuncsPtr      screen_funcs;
     89 
     90 	if (!dixPrivateKeyRegistered(&glamor_sync_fence_key)) {
     91 		if (!dixRegisterPrivateKey(&glamor_sync_fence_key,
     92 					   PRIVATE_SYNC_FENCE,
     93 					   sizeof (struct glamor_sync_fence)))
     94 			return FALSE;
     95 	}
     96 
     97 #ifdef HAVE_XSHMFENCE
     98 	if (!miSyncShmScreenInit(screen))
     99 		return FALSE;
    100 #else
    101 	if (!miSyncSetup(screen))
    102 		return FALSE;
    103 #endif
    104 
    105 	screen_funcs = miSyncGetScreenFuncs(screen);
    106 	glamor->saved_procs.sync_screen_funcs.CreateFence = screen_funcs->CreateFence;
    107 	screen_funcs->CreateFence = glamor_sync_create_fence;
    108 #endif
    109 	return TRUE;
    110 }
    111 
    112 void
    113 glamor_sync_close(ScreenPtr screen)
    114 {
    115 #if XSYNC
    116         glamor_screen_private   *glamor = glamor_get_screen_private(screen);
    117         SyncScreenFuncsPtr      screen_funcs = miSyncGetScreenFuncs(screen);
    118 
    119         if (screen_funcs)
    120                 screen_funcs->CreateFence = glamor->saved_procs.sync_screen_funcs.CreateFence;
    121 #endif
    122 }