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8d95320217
This header needs to be included first, otherwise things can easily get really messed up. The current code only works by accident, because some other header already including it early enough - but a subtle change in include order can easy break it. Thus, always make sure the header is really included first. Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
122 lines
4.0 KiB
C
122 lines
4.0 KiB
C
/*
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* Copyright © 2014 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <dix-config.h>
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#include "glamor_priv.h"
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#include "misyncshm.h"
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#include "misyncstr.h"
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#if XSYNC
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/*
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* This whole file exists to wrap a sync fence trigger operation so
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* that we can flush GL to provide serialization between the server
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* and the shm fence client
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*/
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static DevPrivateKeyRec glamor_sync_fence_key;
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struct glamor_sync_fence {
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SyncFenceSetTriggeredFunc set_triggered;
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};
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static inline struct glamor_sync_fence *
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glamor_get_sync_fence(SyncFence *fence)
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{
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return (struct glamor_sync_fence *) dixLookupPrivate(&fence->devPrivates, &glamor_sync_fence_key);
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}
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static void
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glamor_sync_fence_set_triggered (SyncFence *fence)
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{
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ScreenPtr screen = fence->pScreen;
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glamor_screen_private *glamor = glamor_get_screen_private(screen);
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struct glamor_sync_fence *glamor_fence = glamor_get_sync_fence(fence);
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/* Flush pending rendering operations */
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glamor_flush(glamor);
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fence->funcs.SetTriggered = glamor_fence->set_triggered;
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fence->funcs.SetTriggered(fence);
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glamor_fence->set_triggered = fence->funcs.SetTriggered;
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fence->funcs.SetTriggered = glamor_sync_fence_set_triggered;
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}
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static void
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glamor_sync_create_fence(ScreenPtr screen,
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SyncFence *fence,
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Bool initially_triggered)
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{
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glamor_screen_private *glamor = glamor_get_screen_private(screen);
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SyncScreenFuncsPtr screen_funcs = miSyncGetScreenFuncs(screen);
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struct glamor_sync_fence *glamor_fence = glamor_get_sync_fence(fence);
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screen_funcs->CreateFence = glamor->saved_procs.sync_screen_funcs.CreateFence;
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screen_funcs->CreateFence(screen, fence, initially_triggered);
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glamor->saved_procs.sync_screen_funcs.CreateFence = screen_funcs->CreateFence;
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screen_funcs->CreateFence = glamor_sync_create_fence;
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glamor_fence->set_triggered = fence->funcs.SetTriggered;
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fence->funcs.SetTriggered = glamor_sync_fence_set_triggered;
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}
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#endif
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Bool
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glamor_sync_init(ScreenPtr screen)
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{
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#if XSYNC
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glamor_screen_private *glamor = glamor_get_screen_private(screen);
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SyncScreenFuncsPtr screen_funcs;
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if (!dixPrivateKeyRegistered(&glamor_sync_fence_key)) {
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if (!dixRegisterPrivateKey(&glamor_sync_fence_key,
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PRIVATE_SYNC_FENCE,
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sizeof (struct glamor_sync_fence)))
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return FALSE;
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}
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#ifdef HAVE_XSHMFENCE
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if (!miSyncShmScreenInit(screen))
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return FALSE;
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#else
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if (!miSyncSetup(screen))
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return FALSE;
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#endif
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screen_funcs = miSyncGetScreenFuncs(screen);
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glamor->saved_procs.sync_screen_funcs.CreateFence = screen_funcs->CreateFence;
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screen_funcs->CreateFence = glamor_sync_create_fence;
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#endif
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return TRUE;
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}
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void
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glamor_sync_close(ScreenPtr screen)
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{
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#if XSYNC
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glamor_screen_private *glamor = glamor_get_screen_private(screen);
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SyncScreenFuncsPtr screen_funcs = miSyncGetScreenFuncs(screen);
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if (screen_funcs)
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screen_funcs->CreateFence = glamor->saved_procs.sync_screen_funcs.CreateFence;
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#endif
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}
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