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xorg-x11-server/glamor-add-shm-sync-fence-support.patch

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From c4d23ebca047b5790dedb0c52232afff03199082 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Fri, 18 Jul 2014 11:16:27 -0700
Subject: [PATCH] glamor: Add support for SHM sync fences
This hooks up SHM sync fences to complete the requirements for DRI3
running on Glamor.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
diff --git a/glamor/Makefile.am b/glamor/Makefile.am
index bde58b6..5efa035 100644
--- a/glamor/Makefile.am
+++ b/glamor/Makefile.am
@@ -44,6 +44,7 @@ libglamor_la_SOURCES = \
glamor_vbo.c \
glamor_window.c\
glamor_fbo.c\
+ glamor_sync.c\
glamor_compositerects.c\
glamor_utils.h\
glamor.h
diff --git a/glamor/glamor.c b/glamor/glamor.c
index 3588903..6fec87e 100644
--- a/glamor/glamor.c
+++ b/glamor/glamor.c
@@ -516,6 +516,7 @@ glamor_init(ScreenPtr screen, unsigned int flags)
#endif
glamor_pixmap_init(screen);
glamor_glyphs_init(screen);
+ glamor_sync_init(screen);
glamor_priv->screen = screen;
@@ -587,6 +588,7 @@ glamor_close_screen(ScreenPtr screen)
#endif
glamor_priv = glamor_get_screen_private(screen);
flags = glamor_priv->flags;
+ glamor_sync_close(screen);
glamor_glyphs_fini(screen);
screen->CloseScreen = glamor_priv->saved_procs.close_screen;
screen->CreateScreenResources =
diff --git a/glamor/glamor_priv.h b/glamor/glamor_priv.h
index c56c559..f783513 100644
--- a/glamor/glamor_priv.h
+++ b/glamor/glamor_priv.h
@@ -32,6 +32,11 @@
#include <xorg-server.h>
#include "glamor.h"
+#if XSYNC
+#include "misyncshm.h"
+#include "misyncstr.h"
+#endif
+
#include <epoxy/gl.h>
#if GLAMOR_HAS_GBM
#define MESA_EGL_NO_X11_HEADERS
@@ -183,6 +188,9 @@ struct glamor_saved_procs {
DestroyPictureProcPtr destroy_picture;
UnrealizeGlyphProcPtr unrealize_glyph;
SetWindowPixmapProcPtr set_window_pixmap;
+#if XSYNC
+ SyncScreenFuncsRec sync_screen_funcs;
+#endif
};
#define CACHE_FORMAT_COUNT 3
@@ -1007,6 +1015,13 @@ void glamor_composite_rectangles(CARD8 op,
xRenderColor *color,
int num_rects, xRectangle *rects);
+/* glamor_sync.c */
+Bool
+glamor_sync_init(ScreenPtr screen);
+
+void
+glamor_sync_close(ScreenPtr screen);
+
/* glamor_xv */
typedef struct {
uint32_t transform_index;
diff --git a/glamor/glamor_sync.c b/glamor/glamor_sync.c
new file mode 100644
index 0000000..d3d64a9
--- /dev/null
+++ b/glamor/glamor_sync.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright © 2014 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+
+#include "glamor_priv.h"
+#include "misyncshm.h"
+#include "misyncstr.h"
+
+#if XSYNC
+/*
+ * This whole file exists to wrap a sync fence trigger operation so
+ * that we can flush GL to provide serialization between the server
+ * and the shm fence client
+ */
+
+static DevPrivateKeyRec glamor_sync_fence_key;
+
+struct glamor_sync_fence {
+ SyncFenceSetTriggeredFunc set_triggered;
+};
+
+static inline struct glamor_sync_fence *
+glamor_get_sync_fence(SyncFence *fence)
+{
+ return (struct glamor_sync_fence *) dixLookupPrivate(&fence->devPrivates, &glamor_sync_fence_key);
+}
+
+static void
+glamor_sync_fence_set_triggered (SyncFence *fence)
+{
+ ScreenPtr screen = fence->pScreen;
+ glamor_screen_private *glamor = glamor_get_screen_private(screen);
+ struct glamor_sync_fence *glamor_fence = glamor_get_sync_fence(fence);
+
+ /* Flush pending rendering operations */
+ glamor_make_current(glamor);
+ glFinish();
+
+ fence->funcs.SetTriggered = glamor_fence->set_triggered;
+ fence->funcs.SetTriggered(fence);
+ glamor_fence->set_triggered = fence->funcs.SetTriggered;
+ fence->funcs.SetTriggered = glamor_sync_fence_set_triggered;
+}
+
+static void
+glamor_sync_create_fence(ScreenPtr screen,
+ SyncFence *fence,
+ Bool initially_triggered)
+{
+ glamor_screen_private *glamor = glamor_get_screen_private(screen);
+ SyncScreenFuncsPtr screen_funcs = miSyncGetScreenFuncs(screen);
+ struct glamor_sync_fence *glamor_fence = glamor_get_sync_fence(fence);
+
+ screen_funcs->CreateFence = glamor->saved_procs.sync_screen_funcs.CreateFence;
+ screen_funcs->CreateFence(screen, fence, initially_triggered);
+ glamor->saved_procs.sync_screen_funcs.CreateFence = screen_funcs->CreateFence;
+ screen_funcs->CreateFence = glamor_sync_create_fence;
+
+ glamor_fence->set_triggered = fence->funcs.SetTriggered;
+ fence->funcs.SetTriggered = glamor_sync_fence_set_triggered;
+}
+#endif
+
+Bool
+glamor_sync_init(ScreenPtr screen)
+{
+#if XSYNC
+ glamor_screen_private *glamor = glamor_get_screen_private(screen);
+ SyncScreenFuncsPtr screen_funcs;
+
+ if (!dixPrivateKeyRegistered(&glamor_sync_fence_key)) {
+ if (!dixRegisterPrivateKey(&glamor_sync_fence_key,
+ PRIVATE_SYNC_FENCE,
+ sizeof (struct glamor_sync_fence)))
+ return FALSE;
+ }
+
+ if (!miSyncShmScreenInit(screen))
+ return FALSE;
+
+ screen_funcs = miSyncGetScreenFuncs(screen);
+ glamor->saved_procs.sync_screen_funcs.CreateFence = screen_funcs->CreateFence;
+ screen_funcs->CreateFence = glamor_sync_create_fence;
+#endif
+ return TRUE;
+}
+
+void
+glamor_sync_close(ScreenPtr screen)
+{
+#if XSYNC
+ glamor_screen_private *glamor = glamor_get_screen_private(screen);
+ SyncScreenFuncsPtr screen_funcs = miSyncGetScreenFuncs(screen);
+
+ if (screen_funcs)
+ screen_funcs->CreateFence = glamor->saved_procs.sync_screen_funcs.CreateFence;
+#endif
+}
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