e59a19bd03
The XVisualInfo for GL is created when a stage is being realized. When embedding Clutter inside another toolkit we might not want to realize a stage to extract the XVisualInfo, then set the stage window using a foreign X Window -- which will cause a re-realization. Instead, we should abstract as much as possible into the X11 backend. Unfortunately, the XVisualInfo for GL is requested using GLX API; for this reason we have to create a ClutterBackendX11 method that we override inside the ClutterBackendGLX implementation. This also allows us to move a little bit of complexity from out of the stage realization, which is currently a very delicate and hard to debug section.
312 lines
10 KiB
C
312 lines
10 KiB
C
/* Clutter.
|
|
* An OpenGL based 'interactive canvas' library.
|
|
* Authored By Matthew Allum <mallum@openedhand.com>
|
|
* Copyright (C) 2006-2007 OpenedHand
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "clutter-backend-glx.h"
|
|
#include "clutter-stage-glx.h"
|
|
#include "clutter-glx.h"
|
|
|
|
#include "../clutter-main.h"
|
|
#include "../clutter-feature.h"
|
|
#include "../clutter-color.h"
|
|
#include "../clutter-util.h"
|
|
#include "../clutter-event.h"
|
|
#include "../clutter-enum-types.h"
|
|
#include "../clutter-private.h"
|
|
#include "../clutter-debug.h"
|
|
#include "../clutter-units.h"
|
|
#include "../clutter-shader.h"
|
|
#include "../clutter-group.h"
|
|
#include "../clutter-container.h"
|
|
#include "../clutter-stage.h"
|
|
#include "../clutter-stage-window.h"
|
|
|
|
#include "cogl/cogl.h"
|
|
|
|
#include <GL/glx.h>
|
|
#include <GL/gl.h>
|
|
|
|
static void clutter_stage_window_iface_init (ClutterStageWindowIface *iface);
|
|
|
|
G_DEFINE_TYPE_WITH_CODE (ClutterStageGLX,
|
|
clutter_stage_glx,
|
|
CLUTTER_TYPE_STAGE_X11,
|
|
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_STAGE_WINDOW,
|
|
clutter_stage_window_iface_init));
|
|
|
|
static void
|
|
clutter_stage_glx_unrealize (ClutterActor *actor)
|
|
{
|
|
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (actor);
|
|
ClutterStageGLX *stage_glx = CLUTTER_STAGE_GLX (actor);
|
|
gboolean was_offscreen;
|
|
|
|
/* Note unrealize should free up any backend stage related resources */
|
|
CLUTTER_NOTE (BACKEND, "Unrealizing stage");
|
|
|
|
g_object_get (stage_x11->wrapper, "offscreen", &was_offscreen, NULL);
|
|
|
|
if (CLUTTER_ACTOR_CLASS (clutter_stage_glx_parent_class)->unrealize != NULL)
|
|
CLUTTER_ACTOR_CLASS (clutter_stage_glx_parent_class)->unrealize (actor);
|
|
|
|
clutter_x11_trap_x_errors ();
|
|
|
|
if (G_UNLIKELY (was_offscreen))
|
|
{
|
|
if (stage_glx->glxpixmap)
|
|
{
|
|
glXDestroyGLXPixmap (stage_x11->xdpy,stage_glx->glxpixmap);
|
|
stage_glx->glxpixmap = None;
|
|
}
|
|
|
|
if (stage_x11->xpixmap)
|
|
{
|
|
XFreePixmap (stage_x11->xdpy, stage_x11->xpixmap);
|
|
stage_x11->xpixmap = None;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!stage_x11->is_foreign_xwin && stage_x11->xwin != None)
|
|
{
|
|
XDestroyWindow (stage_x11->xdpy, stage_x11->xwin);
|
|
stage_x11->xwin = None;
|
|
}
|
|
else
|
|
stage_x11->xwin = None;
|
|
}
|
|
|
|
XSync (stage_x11->xdpy, False);
|
|
|
|
clutter_x11_untrap_x_errors ();
|
|
|
|
CLUTTER_MARK ();
|
|
}
|
|
|
|
static void
|
|
clutter_stage_glx_realize (ClutterActor *actor)
|
|
{
|
|
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (actor);
|
|
ClutterStageGLX *stage_glx = CLUTTER_STAGE_GLX (actor);
|
|
ClutterBackendGLX *backend_glx;
|
|
ClutterBackendX11 *backend_x11;
|
|
gboolean is_offscreen;
|
|
|
|
CLUTTER_NOTE (ACTOR, "Realizing stage '%s' [%p]",
|
|
G_OBJECT_TYPE_NAME (actor),
|
|
actor);
|
|
|
|
g_object_get (stage_x11->wrapper, "offscreen", &is_offscreen, NULL);
|
|
|
|
backend_glx = CLUTTER_BACKEND_GLX (clutter_get_default_backend ());
|
|
backend_x11 = CLUTTER_BACKEND_X11 (clutter_get_default_backend ());
|
|
|
|
if (G_LIKELY (!is_offscreen))
|
|
{
|
|
if (stage_x11->xvisinfo != None)
|
|
{
|
|
XFree (stage_x11->xvisinfo);
|
|
stage_x11->xvisinfo = None;
|
|
}
|
|
|
|
stage_x11->xvisinfo =
|
|
clutter_backend_x11_get_visual_info (backend_x11, FALSE);
|
|
if (stage_x11->xvisinfo == None)
|
|
{
|
|
g_critical ("Unable to find suitable GL visual.");
|
|
goto fail;
|
|
}
|
|
|
|
if (stage_x11->xwin == None)
|
|
{
|
|
XSetWindowAttributes xattr;
|
|
unsigned long mask;
|
|
|
|
CLUTTER_NOTE (MISC, "Creating stage X window");
|
|
|
|
/* window attributes */
|
|
xattr.background_pixel = WhitePixel (stage_x11->xdpy,
|
|
stage_x11->xscreen);
|
|
xattr.border_pixel = 0;
|
|
xattr.colormap = XCreateColormap (stage_x11->xdpy,
|
|
stage_x11->xwin_root,
|
|
stage_x11->xvisinfo->visual,
|
|
AllocNone);
|
|
mask = CWBorderPixel | CWColormap;
|
|
stage_x11->xwin = XCreateWindow (stage_x11->xdpy,
|
|
stage_x11->xwin_root,
|
|
0, 0,
|
|
stage_x11->xwin_width,
|
|
stage_x11->xwin_height,
|
|
0,
|
|
stage_x11->xvisinfo->depth,
|
|
InputOutput,
|
|
stage_x11->xvisinfo->visual,
|
|
mask, &xattr);
|
|
}
|
|
|
|
if (clutter_x11_has_event_retrieval())
|
|
{
|
|
if (clutter_x11_has_xinput())
|
|
{
|
|
XSelectInput (stage_x11->xdpy, stage_x11->xwin,
|
|
StructureNotifyMask |
|
|
FocusChangeMask |
|
|
ExposureMask |
|
|
KeyPressMask | KeyReleaseMask |
|
|
EnterWindowMask | LeaveWindowMask |
|
|
PropertyChangeMask);
|
|
#ifdef USE_XINPUT
|
|
_clutter_x11_select_events (stage_x11->xwin);
|
|
#endif
|
|
}
|
|
else
|
|
XSelectInput (stage_x11->xdpy, stage_x11->xwin,
|
|
StructureNotifyMask |
|
|
FocusChangeMask |
|
|
ExposureMask |
|
|
PointerMotionMask |
|
|
KeyPressMask | KeyReleaseMask |
|
|
ButtonPressMask | ButtonReleaseMask |
|
|
EnterWindowMask | LeaveWindowMask |
|
|
PropertyChangeMask);
|
|
}
|
|
|
|
/* no user resize.. */
|
|
clutter_stage_x11_fix_window_size (stage_x11);
|
|
clutter_stage_x11_set_wm_protocols (stage_x11);
|
|
|
|
if (G_UNLIKELY (backend_glx->gl_context == None))
|
|
{
|
|
CLUTTER_NOTE (GL, "Creating GL Context");
|
|
backend_glx->gl_context = glXCreateContext (stage_x11->xdpy,
|
|
stage_x11->xvisinfo,
|
|
0,
|
|
True);
|
|
|
|
if (backend_glx->gl_context == None)
|
|
{
|
|
g_critical ("Unable to create suitable GL context.");
|
|
goto fail;
|
|
}
|
|
|
|
_cogl_set_indirect_context (!glXIsDirect (stage_x11->xdpy,
|
|
backend_glx->gl_context));
|
|
}
|
|
|
|
CLUTTER_NOTE (BACKEND, "Marking stage as realized");
|
|
CLUTTER_ACTOR_SET_FLAGS (stage_x11, CLUTTER_ACTOR_REALIZED);
|
|
}
|
|
else
|
|
{
|
|
if (stage_x11->xvisinfo != None)
|
|
{
|
|
XFree (stage_x11->xvisinfo);
|
|
stage_x11->xvisinfo = None;
|
|
}
|
|
|
|
stage_x11->xvisinfo =
|
|
clutter_backend_x11_get_visual_info (backend_x11, TRUE);
|
|
if (stage_x11->xvisinfo == None)
|
|
{
|
|
g_critical ("Unable to find suitable GL visual.");
|
|
goto fail;
|
|
}
|
|
|
|
|
|
stage_x11->xpixmap = XCreatePixmap (stage_x11->xdpy,
|
|
stage_x11->xwin_root,
|
|
stage_x11->xwin_width,
|
|
stage_x11->xwin_height,
|
|
DefaultDepth (stage_x11->xdpy,
|
|
stage_x11->xscreen));
|
|
|
|
stage_glx->glxpixmap = glXCreateGLXPixmap (stage_x11->xdpy,
|
|
stage_x11->xvisinfo,
|
|
stage_x11->xpixmap);
|
|
|
|
if (backend_glx->gl_context == None)
|
|
{
|
|
CLUTTER_NOTE (GL, "Creating GL Context");
|
|
|
|
/* FIXME: we probably need a seperate offscreen context here
|
|
* - though it likely makes most sense to drop offscreen stages
|
|
* and rely on FBO's instead and GLXPixmaps seems mostly broken
|
|
* anyway..
|
|
*/
|
|
backend_glx->gl_context = glXCreateContext (stage_x11->xdpy,
|
|
stage_x11->xvisinfo,
|
|
0,
|
|
False);
|
|
|
|
if (backend_glx->gl_context == None)
|
|
{
|
|
g_critical ("Unable to create suitable GL context.");
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
CLUTTER_NOTE (BACKEND, "Marking stage as realized");
|
|
CLUTTER_ACTOR_SET_FLAGS (stage_x11, CLUTTER_ACTOR_REALIZED);
|
|
}
|
|
|
|
/* we need to chain up to the X11 stage implementation in order to
|
|
* set the window state in case we set it before realizing the stage
|
|
*/
|
|
CLUTTER_ACTOR_CLASS (clutter_stage_glx_parent_class)->realize (actor);
|
|
return;
|
|
|
|
fail:
|
|
CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
|
|
}
|
|
|
|
static void
|
|
clutter_stage_glx_dispose (GObject *gobject)
|
|
{
|
|
G_OBJECT_CLASS (clutter_stage_glx_parent_class)->dispose (gobject);
|
|
}
|
|
|
|
static void
|
|
clutter_stage_glx_class_init (ClutterStageGLXClass *klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
|
|
|
|
gobject_class->dispose = clutter_stage_glx_dispose;
|
|
|
|
actor_class->realize = clutter_stage_glx_realize;
|
|
actor_class->unrealize = clutter_stage_glx_unrealize;
|
|
}
|
|
|
|
static void
|
|
clutter_stage_glx_init (ClutterStageGLX *stage)
|
|
{
|
|
}
|
|
|
|
static void
|
|
clutter_stage_window_iface_init (ClutterStageWindowIface *iface)
|
|
{
|
|
/* the rest is inherited from ClutterStageX11 */
|
|
}
|