mirror of
https://github.com/brl/mutter.git
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b34034217a
It seems like it would be quite a reasonable design for an application to immediately paint the buffer and call swap_buffers within the handler for the sync event. This previously wouldn't work. When using the GLX winsys if swap_region is called then it immediately tries to set the pending notification flag. However if this is called from the event callback then when the callback is complete it will clear the flag again and the pending notification will be lost. This patch just makes it clear the pending flag before invoking the callback so that it can be safely queued again. With any winsys that doesn't directly handle the sync event notification it would almost work except that it was iterating the live list of pending events. If the callback causes another event to be added to this list by issuing a buffer swap then the iteration would never complete and cogl_poll_dispatch would never return. This patch just makes it steal the list before iterating so that any additions will be dispatched by a later call to cogl_poll_dispatch instead. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 2263b31594900b73900d2ce22cf70c68e7e793c6)
662 lines
20 KiB
C
662 lines
20 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2011, 2013 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl-util.h"
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#include "cogl-onscreen-private.h"
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#include "cogl-frame-info-private.h"
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#include "cogl-framebuffer-private.h"
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#include "cogl-onscreen-template-private.h"
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#include "cogl-context-private.h"
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#include "cogl-object-private.h"
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#include "cogl1-context.h"
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static void _cogl_onscreen_free (CoglOnscreen *onscreen);
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COGL_OBJECT_DEFINE_WITH_CODE (Onscreen, onscreen,
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_cogl_onscreen_class.virt_unref =
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_cogl_framebuffer_unref);
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static void
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_cogl_onscreen_init_from_template (CoglOnscreen *onscreen,
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CoglOnscreenTemplate *onscreen_template)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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COGL_TAILQ_INIT (&onscreen->frame_closures);
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COGL_TAILQ_INIT (&onscreen->resize_callbacks);
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framebuffer->config = onscreen_template->config;
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cogl_object_ref (framebuffer->config.swap_chain);
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}
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/* XXX: While we still have backend in Clutter we need a dummy object
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* to represent the CoglOnscreen framebuffer that the backend
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* creates... */
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CoglOnscreen *
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_cogl_onscreen_new (void)
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{
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CoglOnscreen *onscreen = g_new0 (CoglOnscreen, 1);
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_COGL_GET_CONTEXT (ctx, NULL);
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_cogl_framebuffer_init (COGL_FRAMEBUFFER (onscreen),
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ctx,
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COGL_FRAMEBUFFER_TYPE_ONSCREEN,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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0x1eadbeef, /* width */
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0x1eadbeef); /* height */
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/* NB: make sure to pass positive width/height numbers here
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* because otherwise we'll hit input validation assertions!*/
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_cogl_onscreen_init_from_template (onscreen, ctx->display->onscreen_template);
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COGL_FRAMEBUFFER (onscreen)->allocated = TRUE;
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/* XXX: Note we don't initialize onscreen->winsys in this case. */
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return _cogl_onscreen_object_new (onscreen);
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}
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CoglOnscreen *
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cogl_onscreen_new (CoglContext *ctx, int width, int height)
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{
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CoglOnscreen *onscreen;
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/* FIXME: We are assuming onscreen buffers will always be
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premultiplied so we'll set the premult flag on the bitmap
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format. This will usually be correct because the result of the
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default blending operations for Cogl ends up with premultiplied
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data in the framebuffer. However it is possible for the
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framebuffer to be in whatever format depending on what
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CoglPipeline is used to render to it. Eventually we may want to
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add a way for an application to inform Cogl that the framebuffer
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is not premultiplied in case it is being used for some special
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purpose. */
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onscreen = g_new0 (CoglOnscreen, 1);
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_cogl_framebuffer_init (COGL_FRAMEBUFFER (onscreen),
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ctx,
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COGL_FRAMEBUFFER_TYPE_ONSCREEN,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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width, /* width */
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height); /* height */
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_cogl_onscreen_init_from_template (onscreen, ctx->display->onscreen_template);
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return _cogl_onscreen_object_new (onscreen);
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}
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static void
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_cogl_onscreen_free (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
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CoglResizeNotifyEntry *resize_entry;
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CoglFrameClosure *frame_closure;
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CoglFrameInfo *frame_info;
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while ((resize_entry = COGL_TAILQ_FIRST (&onscreen->resize_callbacks)))
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{
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COGL_TAILQ_REMOVE (&onscreen->resize_callbacks, resize_entry, list_node);
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g_slice_free (CoglResizeNotifyEntry, resize_entry);
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}
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while ((frame_closure = COGL_TAILQ_FIRST (&onscreen->frame_closures)))
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{
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COGL_TAILQ_REMOVE (&onscreen->frame_closures, frame_closure, list_node);
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if (frame_closure->destroy)
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frame_closure->destroy (frame_closure->user_data);
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g_slice_free (CoglFrameClosure, frame_closure);
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}
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while ((frame_info = g_queue_pop_tail (&onscreen->pending_frame_infos)))
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cogl_object_unref (frame_info);
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g_queue_clear (&onscreen->pending_frame_infos);
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if (framebuffer->context->window_buffer == COGL_FRAMEBUFFER (onscreen))
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framebuffer->context->window_buffer = NULL;
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winsys->onscreen_deinit (onscreen);
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_COGL_RETURN_IF_FAIL (onscreen->winsys == NULL);
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/* Chain up to parent */
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_cogl_framebuffer_free (framebuffer);
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g_free (onscreen);
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}
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static void
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_cogl_onscreen_queue_event (CoglOnscreen *onscreen,
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CoglFrameEvent type,
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CoglFrameInfo *info)
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{
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CoglContext *ctx = COGL_FRAMEBUFFER (onscreen)->context;
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CoglOnscreenEvent *event = g_slice_new (CoglOnscreenEvent);
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event->onscreen = cogl_object_ref (onscreen);
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event->info = cogl_object_ref (info);
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event->type = type;
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COGL_TAILQ_INSERT_TAIL (&ctx->onscreen_events_queue, event, list_node);
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}
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void
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cogl_onscreen_swap_buffers (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys;
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CoglFrameInfo *info;
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_COGL_RETURN_IF_FAIL (framebuffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN);
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info = _cogl_frame_info_new ();
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info->frame_counter = onscreen->frame_counter;
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g_queue_push_tail (&onscreen->pending_frame_infos, info);
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/* FIXME: we shouldn't need to flush *all* journals here! */
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cogl_flush ();
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winsys = _cogl_framebuffer_get_winsys (framebuffer);
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winsys->onscreen_swap_buffers (COGL_ONSCREEN (framebuffer));
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cogl_framebuffer_discard_buffers (framebuffer,
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COGL_BUFFER_BIT_COLOR |
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COGL_BUFFER_BIT_DEPTH |
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COGL_BUFFER_BIT_STENCIL);
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if (!_cogl_winsys_has_feature (COGL_WINSYS_FEATURE_SYNC_AND_COMPLETE_EVENT))
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{
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CoglFrameInfo *info;
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g_warn_if_fail (onscreen->pending_frame_infos.length == 1);
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info = g_queue_pop_tail (&onscreen->pending_frame_infos);
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_cogl_onscreen_queue_event (onscreen, COGL_FRAME_EVENT_SYNC, info);
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_cogl_onscreen_queue_event (onscreen, COGL_FRAME_EVENT_COMPLETE, info);
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cogl_object_unref (info);
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}
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onscreen->frame_counter++;
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}
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void
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cogl_onscreen_swap_region (CoglOnscreen *onscreen,
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const int *rectangles,
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int n_rectangles)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys;
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CoglFrameInfo *info;
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_COGL_RETURN_IF_FAIL (framebuffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN);
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info = _cogl_frame_info_new ();
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info->frame_counter = onscreen->frame_counter;
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g_queue_push_tail (&onscreen->pending_frame_infos, info);
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/* FIXME: we shouldn't need to flush *all* journals here! */
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cogl_flush ();
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winsys = _cogl_framebuffer_get_winsys (framebuffer);
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/* This should only be called if the winsys advertises
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COGL_WINSYS_FEATURE_SWAP_REGION */
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_COGL_RETURN_IF_FAIL (winsys->onscreen_swap_region != NULL);
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winsys->onscreen_swap_region (COGL_ONSCREEN (framebuffer),
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rectangles,
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n_rectangles);
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cogl_framebuffer_discard_buffers (framebuffer,
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COGL_BUFFER_BIT_COLOR |
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COGL_BUFFER_BIT_DEPTH |
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COGL_BUFFER_BIT_STENCIL);
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if (!_cogl_winsys_has_feature (COGL_WINSYS_FEATURE_SYNC_AND_COMPLETE_EVENT))
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{
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CoglFrameInfo *info;
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g_warn_if_fail (onscreen->pending_frame_infos.length == 1);
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info = g_queue_pop_tail (&onscreen->pending_frame_infos);
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_cogl_onscreen_queue_event (onscreen, COGL_FRAME_EVENT_SYNC, info);
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_cogl_onscreen_queue_event (onscreen, COGL_FRAME_EVENT_COMPLETE, info);
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cogl_object_unref (info);
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}
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onscreen->frame_counter++;
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}
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int
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cogl_onscreen_get_buffer_age (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys;
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_COGL_RETURN_VAL_IF_FAIL (framebuffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN, 0);
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winsys = _cogl_framebuffer_get_winsys (framebuffer);
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if (!winsys->onscreen_get_buffer_age)
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return 0;
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return winsys->onscreen_get_buffer_age (onscreen);
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}
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#ifdef COGL_HAS_X11_SUPPORT
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void
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cogl_x11_onscreen_set_foreign_window_xid (CoglOnscreen *onscreen,
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uint32_t xid,
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CoglOnscreenX11MaskCallback update,
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void *user_data)
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{
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/* We don't wan't applications to get away with being lazy here and not
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* passing an update callback... */
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_COGL_RETURN_IF_FAIL (update);
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onscreen->foreign_xid = xid;
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onscreen->foreign_update_mask_callback = update;
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onscreen->foreign_update_mask_data = user_data;
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}
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uint32_t
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cogl_x11_onscreen_get_window_xid (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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if (onscreen->foreign_xid)
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return onscreen->foreign_xid;
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else
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{
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const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
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/* This should only be called for x11 onscreens */
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_COGL_RETURN_VAL_IF_FAIL (winsys->onscreen_x11_get_window_xid != NULL, 0);
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return winsys->onscreen_x11_get_window_xid (onscreen);
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}
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}
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uint32_t
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cogl_x11_onscreen_get_visual_xid (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
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XVisualInfo *visinfo;
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uint32_t id;
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/* This should only be called for xlib based onscreens */
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_COGL_RETURN_VAL_IF_FAIL (winsys->xlib_get_visual_info != NULL, 0);
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visinfo = winsys->xlib_get_visual_info ();
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id = (uint32_t)visinfo->visualid;
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XFree (visinfo);
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return id;
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}
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#endif /* COGL_HAS_X11_SUPPORT */
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#ifdef COGL_HAS_WIN32_SUPPORT
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void
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cogl_win32_onscreen_set_foreign_window (CoglOnscreen *onscreen,
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HWND hwnd)
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{
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onscreen->foreign_hwnd = hwnd;
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}
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HWND
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cogl_win32_onscreen_get_window (CoglOnscreen *onscreen)
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{
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if (onscreen->foreign_hwnd)
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return onscreen->foreign_hwnd;
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else
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys =
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_cogl_framebuffer_get_winsys (framebuffer);
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/* This should only be called for win32 onscreens */
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_COGL_RETURN_VAL_IF_FAIL (winsys->onscreen_win32_get_window != NULL, 0);
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return winsys->onscreen_win32_get_window (onscreen);
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}
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}
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#endif /* COGL_HAS_WIN32_SUPPORT */
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CoglFrameClosure *
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cogl_onscreen_add_frame_callback (CoglOnscreen *onscreen,
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CoglFrameCallback callback,
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void *user_data,
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CoglUserDataDestroyCallback destroy)
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{
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CoglFrameClosure *closure = g_slice_new0 (CoglFrameClosure);
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closure->callback = callback;
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closure->user_data = user_data;
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closure->destroy = destroy;
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COGL_TAILQ_INSERT_TAIL (&onscreen->frame_closures, closure, list_node);
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return closure;
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}
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void
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cogl_onscreen_remove_frame_callback (CoglOnscreen *onscreen,
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CoglFrameClosure *closure)
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{
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_COGL_RETURN_IF_FAIL (closure);
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if (closure->destroy)
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closure->destroy (closure->user_data);
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COGL_TAILQ_REMOVE (&onscreen->frame_closures, closure, list_node);
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g_slice_free (CoglFrameClosure, closure);
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}
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typedef struct _SwapBufferCallbackState
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{
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CoglSwapBuffersNotify callback;
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void *user_data;
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} SwapBufferCallbackState;
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static void
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destroy_swap_buffers_callback_state (void *user_data)
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{
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g_slice_free (SwapBufferCallbackState, user_data);
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}
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static void
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shim_swap_buffers_callback (CoglOnscreen *onscreen,
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CoglFrameEvent event,
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CoglFrameInfo *info,
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void *user_data)
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{
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SwapBufferCallbackState *state = user_data;
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/* XXX: Note that technically it is a change in semantics for this
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* interface to forward _SYNC events here and also makes the api
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* name somewhat missleading.
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*
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* In practice though this interface is currently used by
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* applications for throttling, not because they are strictly
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* interested in knowing when a frame has been presented and so
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* forwarding _SYNC events should serve them better.
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*/
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if (event == COGL_FRAME_EVENT_SYNC)
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state->callback (COGL_FRAMEBUFFER (onscreen), state->user_data);
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}
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unsigned int
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cogl_onscreen_add_swap_buffers_callback (CoglOnscreen *onscreen,
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CoglSwapBuffersNotify callback,
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void *user_data)
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{
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CoglContext *ctx = COGL_FRAMEBUFFER (onscreen)->context;
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SwapBufferCallbackState *state = g_slice_new (SwapBufferCallbackState);
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CoglFrameClosure *closure;
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unsigned int id = ctx->next_swap_callback_id++;
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state->callback = callback;
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state->user_data = user_data;
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closure =
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cogl_onscreen_add_frame_callback (onscreen,
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shim_swap_buffers_callback,
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state,
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destroy_swap_buffers_callback_state);
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g_hash_table_insert (ctx->swap_callback_closures,
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GINT_TO_POINTER (id),
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closure);
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return id;
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}
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void
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cogl_onscreen_remove_swap_buffers_callback (CoglOnscreen *onscreen,
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unsigned int id)
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{
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CoglContext *ctx = COGL_FRAMEBUFFER (onscreen)->context;
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CoglFrameClosure *closure = g_hash_table_lookup (ctx->swap_callback_closures,
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GINT_TO_POINTER (id));
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_COGL_RETURN_IF_FAIL (closure);
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cogl_onscreen_remove_frame_callback (onscreen, closure);
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}
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void
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cogl_onscreen_set_swap_throttled (CoglOnscreen *onscreen,
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CoglBool throttled)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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framebuffer->config.swap_throttled = throttled;
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if (framebuffer->allocated)
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{
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const CoglWinsysVtable *winsys =
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_cogl_framebuffer_get_winsys (framebuffer);
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winsys->onscreen_update_swap_throttled (onscreen);
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}
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}
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void
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cogl_onscreen_show (CoglOnscreen *onscreen)
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{
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CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
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const CoglWinsysVtable *winsys;
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if (!framebuffer->allocated)
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{
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if (!cogl_framebuffer_allocate (framebuffer, NULL))
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return;
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|
}
|
|
|
|
winsys = _cogl_framebuffer_get_winsys (framebuffer);
|
|
if (winsys->onscreen_set_visibility)
|
|
winsys->onscreen_set_visibility (onscreen, TRUE);
|
|
}
|
|
|
|
void
|
|
cogl_onscreen_hide (CoglOnscreen *onscreen)
|
|
{
|
|
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
|
|
|
|
if (framebuffer->allocated)
|
|
{
|
|
const CoglWinsysVtable *winsys =
|
|
_cogl_framebuffer_get_winsys (framebuffer);
|
|
if (winsys->onscreen_set_visibility)
|
|
winsys->onscreen_set_visibility (onscreen, FALSE);
|
|
}
|
|
}
|
|
|
|
static void
|
|
notify_event (CoglOnscreen *onscreen,
|
|
CoglFrameEvent event,
|
|
CoglFrameInfo *info)
|
|
{
|
|
CoglFrameClosure *entry, *tmp;
|
|
|
|
COGL_TAILQ_FOREACH_SAFE (entry,
|
|
&onscreen->frame_closures,
|
|
list_node,
|
|
tmp)
|
|
{
|
|
entry->callback (onscreen, event, info,
|
|
entry->user_data);
|
|
}
|
|
}
|
|
|
|
void
|
|
_cogl_dispatch_onscreen_events (CoglContext *context)
|
|
{
|
|
CoglOnscreenEvent *event, *tmp;
|
|
CoglOnscreenEventList queue;
|
|
|
|
/* Dispatching the event callback may cause another frame to be
|
|
* drawn which in may cause another event to be queued immediately.
|
|
* To make sure this loop will only dispatch one set of events we'll
|
|
* steal the queue and iterate that separately */
|
|
COGL_TAILQ_INIT (&queue);
|
|
COGL_TAILQ_CONCAT (&queue, &context->onscreen_events_queue, list_node);
|
|
COGL_TAILQ_INIT (&context->onscreen_events_queue);
|
|
|
|
COGL_TAILQ_FOREACH_SAFE (event,
|
|
&queue,
|
|
list_node,
|
|
tmp)
|
|
{
|
|
CoglOnscreen *onscreen = event->onscreen;
|
|
CoglFrameInfo *info = event->info;
|
|
|
|
notify_event (onscreen, event->type, info);
|
|
|
|
cogl_object_unref (onscreen);
|
|
cogl_object_unref (info);
|
|
|
|
g_slice_free (CoglOnscreenEvent, event);
|
|
}
|
|
}
|
|
|
|
void
|
|
_cogl_onscreen_notify_frame_sync (CoglOnscreen *onscreen, CoglFrameInfo *info)
|
|
{
|
|
notify_event (onscreen, COGL_FRAME_EVENT_SYNC, info);
|
|
}
|
|
|
|
void
|
|
_cogl_onscreen_notify_complete (CoglOnscreen *onscreen, CoglFrameInfo *info)
|
|
{
|
|
notify_event (onscreen, COGL_FRAME_EVENT_COMPLETE, info);
|
|
}
|
|
|
|
void
|
|
_cogl_onscreen_notify_resize (CoglOnscreen *onscreen)
|
|
{
|
|
CoglResizeNotifyEntry *entry, *tmp;
|
|
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
|
|
|
|
COGL_TAILQ_FOREACH_SAFE (entry,
|
|
&onscreen->resize_callbacks,
|
|
list_node,
|
|
tmp)
|
|
entry->callback (onscreen,
|
|
framebuffer->width,
|
|
framebuffer->height,
|
|
entry->user_data);
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_winsys_update_size (CoglFramebuffer *framebuffer,
|
|
int width, int height)
|
|
{
|
|
if (framebuffer->width == width && framebuffer->height == height)
|
|
return;
|
|
|
|
framebuffer->width = width;
|
|
framebuffer->height = height;
|
|
|
|
cogl_framebuffer_set_viewport (framebuffer, 0, 0, width, height);
|
|
}
|
|
|
|
void
|
|
cogl_onscreen_set_resizable (CoglOnscreen *onscreen,
|
|
CoglBool resizable)
|
|
{
|
|
CoglFramebuffer *framebuffer;
|
|
const CoglWinsysVtable *winsys;
|
|
|
|
if (onscreen->resizable == resizable)
|
|
return;
|
|
|
|
onscreen->resizable = resizable;
|
|
|
|
framebuffer = COGL_FRAMEBUFFER (onscreen);
|
|
if (framebuffer->allocated)
|
|
{
|
|
winsys = _cogl_framebuffer_get_winsys (COGL_FRAMEBUFFER (onscreen));
|
|
|
|
if (winsys->onscreen_set_resizable)
|
|
winsys->onscreen_set_resizable (onscreen, resizable);
|
|
}
|
|
}
|
|
|
|
CoglBool
|
|
cogl_onscreen_get_resizable (CoglOnscreen *onscreen)
|
|
{
|
|
return onscreen->resizable;
|
|
}
|
|
|
|
unsigned int
|
|
cogl_onscreen_add_resize_handler (CoglOnscreen *onscreen,
|
|
CoglOnscreenResizeCallback callback,
|
|
void *user_data)
|
|
{
|
|
CoglResizeNotifyEntry *entry = g_slice_new (CoglResizeNotifyEntry);
|
|
static int next_resize_callback_id = 0;
|
|
|
|
entry->callback = callback;
|
|
entry->user_data = user_data;
|
|
entry->id = next_resize_callback_id++;
|
|
|
|
COGL_TAILQ_INSERT_TAIL (&onscreen->resize_callbacks, entry, list_node);
|
|
|
|
return entry->id;
|
|
}
|
|
|
|
void
|
|
cogl_onscreen_remove_resize_handler (CoglOnscreen *onscreen,
|
|
unsigned int id)
|
|
{
|
|
CoglResizeNotifyEntry *entry;
|
|
|
|
COGL_TAILQ_FOREACH (entry, &onscreen->resize_callbacks, list_node)
|
|
{
|
|
if (entry->id == id)
|
|
{
|
|
COGL_TAILQ_REMOVE (&onscreen->resize_callbacks, entry, list_node);
|
|
g_slice_free (CoglResizeNotifyEntry, entry);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int64_t
|
|
cogl_onscreen_get_frame_counter (CoglOnscreen *onscreen)
|
|
{
|
|
return onscreen->frame_counter;
|
|
}
|