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mutter-performance-source/src/backends/x11/meta-renderer-x11.c

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2016 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Written by:
* Jonas Ådahl <jadahl@gmail.com>
*/
#include "config.h"
#include <glib-object.h>
#include "clutter/x11/clutter-x11.h"
#include "cogl/cogl.h"
#include "cogl/cogl-xlib.h"
#include "cogl/winsys/cogl-winsys-glx-private.h"
#include "cogl/winsys/cogl-winsys-egl-x11-private.h"
Introduce regional stage rendering Add support for drawing a stage using multiple framebuffers each making up one part of the stage. This works by the stage backend (ClutterStageWindow) providing a list of views which will be for splitting up the stage in different regions. A view layout, for now, is a set of rectangles. The stage window (i.e. stage "backend" will use this information when drawing a frame, using one framebuffer for each view. The scene graph is adapted to explictly take a view when painting the stage. It will use this view, its assigned framebuffer and layout to offset and clip the drawing accordingly. This effectively removes any notion of "stage framebuffer", since each stage now may consist of multiple framebuffers. Therefore, API involving this has been deprecated and made no-ops; namely clutter_stage_ensure_context(). Callers are now assumed to either always use a framebuffer reference explicitly, or push/pop the framebuffer of a given view where the code has not yet changed to use the explicit-buffer-using cogl API. Currently only the nested X11 backend supports this mode fully, and the per view framebuffers are all offscreen. Upon frame completion, it'll blit each view's framebuffer onto the onscreen framebuffer before swapping. Other backends (X11 CM and native/KMS) are adapted to manage a full-stage view. The X11 CM backend will continue to use this method, while the native/KMS backend will be adopted to use multiple view drawing. https://bugzilla.gnome.org/show_bug.cgi?id=768976
2016-05-27 03:09:24 +00:00
#include "backends/meta-backend-private.h"
#include "backends/meta-logical-monitor.h"
#include "backends/meta-renderer.h"
Introduce regional stage rendering Add support for drawing a stage using multiple framebuffers each making up one part of the stage. This works by the stage backend (ClutterStageWindow) providing a list of views which will be for splitting up the stage in different regions. A view layout, for now, is a set of rectangles. The stage window (i.e. stage "backend" will use this information when drawing a frame, using one framebuffer for each view. The scene graph is adapted to explictly take a view when painting the stage. It will use this view, its assigned framebuffer and layout to offset and clip the drawing accordingly. This effectively removes any notion of "stage framebuffer", since each stage now may consist of multiple framebuffers. Therefore, API involving this has been deprecated and made no-ops; namely clutter_stage_ensure_context(). Callers are now assumed to either always use a framebuffer reference explicitly, or push/pop the framebuffer of a given view where the code has not yet changed to use the explicit-buffer-using cogl API. Currently only the nested X11 backend supports this mode fully, and the per view framebuffers are all offscreen. Upon frame completion, it'll blit each view's framebuffer onto the onscreen framebuffer before swapping. Other backends (X11 CM and native/KMS) are adapted to manage a full-stage view. The X11 CM backend will continue to use this method, while the native/KMS backend will be adopted to use multiple view drawing. https://bugzilla.gnome.org/show_bug.cgi?id=768976
2016-05-27 03:09:24 +00:00
#include "backends/meta-renderer-view.h"
#include "backends/x11/meta-renderer-x11.h"
Introduce regional stage rendering Add support for drawing a stage using multiple framebuffers each making up one part of the stage. This works by the stage backend (ClutterStageWindow) providing a list of views which will be for splitting up the stage in different regions. A view layout, for now, is a set of rectangles. The stage window (i.e. stage "backend" will use this information when drawing a frame, using one framebuffer for each view. The scene graph is adapted to explictly take a view when painting the stage. It will use this view, its assigned framebuffer and layout to offset and clip the drawing accordingly. This effectively removes any notion of "stage framebuffer", since each stage now may consist of multiple framebuffers. Therefore, API involving this has been deprecated and made no-ops; namely clutter_stage_ensure_context(). Callers are now assumed to either always use a framebuffer reference explicitly, or push/pop the framebuffer of a given view where the code has not yet changed to use the explicit-buffer-using cogl API. Currently only the nested X11 backend supports this mode fully, and the per view framebuffers are all offscreen. Upon frame completion, it'll blit each view's framebuffer onto the onscreen framebuffer before swapping. Other backends (X11 CM and native/KMS) are adapted to manage a full-stage view. The X11 CM backend will continue to use this method, while the native/KMS backend will be adopted to use multiple view drawing. https://bugzilla.gnome.org/show_bug.cgi?id=768976
2016-05-27 03:09:24 +00:00
#include "core/boxes-private.h"
#include "meta/meta-backend.h"
#include "meta/util.h"
G_DEFINE_TYPE (MetaRendererX11, meta_renderer_x11, META_TYPE_RENDERER)
static const CoglWinsysVtable *
get_x11_cogl_winsys_vtable (CoglRenderer *renderer)
{
if (meta_is_wayland_compositor ())
return _cogl_winsys_egl_xlib_get_vtable ();
switch (renderer->driver)
{
case COGL_DRIVER_GLES2:
return _cogl_winsys_egl_xlib_get_vtable ();
case COGL_DRIVER_GL:
case COGL_DRIVER_GL3:
return _cogl_winsys_glx_get_vtable ();
case COGL_DRIVER_ANY:
case COGL_DRIVER_NOP:
break;
}
g_assert_not_reached ();
}
static CoglRenderer *
meta_renderer_x11_create_cogl_renderer (MetaRenderer *renderer)
{
CoglRenderer *cogl_renderer;
Display *xdisplay = clutter_x11_get_default_display ();
cogl_renderer = cogl_renderer_new ();
cogl_renderer_set_custom_winsys (cogl_renderer, get_x11_cogl_winsys_vtable,
NULL);
cogl_xlib_renderer_set_foreign_display (cogl_renderer, xdisplay);
cogl_xlib_renderer_request_reset_on_video_memory_purge (cogl_renderer, TRUE);
/* Set up things so that if the INTEL_swap_event extension is not present,
* but the driver is known to have good thread support, we use an extra
* thread and call glXWaitVideoSync() in the thread. This allows idles
* to work properly, even when Mutter is constantly redrawing new frames;
* otherwise, without INTEL_swap_event, we'll just block in glXSwapBuffers().
*/
cogl_xlib_renderer_set_threaded_swap_wait_enabled (cogl_renderer, TRUE);
return cogl_renderer;
}
static void
meta_renderer_x11_init (MetaRendererX11 *renderer_x11)
{
}
static void
meta_renderer_x11_class_init (MetaRendererX11Class *klass)
{
MetaRendererClass *renderer_class = META_RENDERER_CLASS (klass);
renderer_class->create_cogl_renderer = meta_renderer_x11_create_cogl_renderer;
}