forked from AuroraMiddleware/gtk
972134abe4
With the vendor provided Nvidia driver there is a small window of time after drawing to a GL surface before the updates to that surface can be used by the compositor. Drawing is already coordinated with the compositor through the frame synchronization protocol detailed here: https://fishsoup.net/misc/wm-spec-synchronization.html Unfortunately, at the moment, GdkX11Surface tells the compositor the frame is ready immediately after drawing to the surface, not later, when it's consumable by the compositor. This commit defers announcing the frame as ready until it's consumable by the compositor. It does this by listening for the X server to announce damage events associated with the frame drawing. It tries to find the right damage event by waiting until fence placed at buffer swap time signals.
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/* GDK - The GIMP Drawing Kit
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*
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* gdkglcontext-x11.h: Private X11 specific OpenGL wrappers
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*
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* Copyright © 2014 Emmanuele Bassi
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library 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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#ifndef __GDK_X11_GL_CONTEXT__
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#define __GDK_X11_GL_CONTEXT__
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#include <X11/X.h>
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#include <X11/Xlib.h>
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#ifdef HAVE_XDAMAGE
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#include <X11/extensions/Xdamage.h>
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#endif
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#include <epoxy/gl.h>
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#include <epoxy/glx.h>
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#include "gdkglcontextprivate.h"
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#include "gdkdisplayprivate.h"
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#include "gdkvisual-x11.h"
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#include "gdksurface.h"
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#include "gdkinternals.h"
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G_BEGIN_DECLS
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struct _GdkX11GLContext
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{
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GdkGLContext parent_instance;
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GLXContext glx_context;
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GLXFBConfig glx_config;
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GLXDrawable attached_drawable;
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GLXDrawable unattached_drawable;
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#ifdef HAVE_XDAMAGE
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GLsync frame_fence;
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Damage xdamage;
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#endif
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guint is_attached : 1;
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guint is_direct : 1;
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guint do_frame_sync : 1;
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};
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struct _GdkX11GLContextClass
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{
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GdkGLContextClass parent_class;
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};
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gboolean gdk_x11_screen_init_gl (GdkX11Screen *screen);
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GdkGLContext * gdk_x11_surface_create_gl_context (GdkSurface *window,
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gboolean attached,
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GdkGLContext *share,
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GError **error);
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gboolean gdk_x11_display_make_gl_context_current (GdkDisplay *display,
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GdkGLContext *context);
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G_END_DECLS
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#endif /* __GDK_X11_GL_CONTEXT__ */
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