630a2c5edc
Currently glXCopySubBufferMESA is used for sub stage redraws, but in case a driver does not support GLX_MESA_copy_sub_buffer we fall back to redrawing the complete stage which isn't really optimal. So instead to directly fallback to complete redraws try using GL_EXT_framebuffer_blit to do the BACK to FRONT buffer copies. http://bugzilla.openedhand.com/show_bug.cgi?id=2128
123 lines
4.4 KiB
C
123 lines
4.4 KiB
C
/* Clutter.
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* An OpenGL based 'interactive canvas' library.
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* Authored By Matthew Allum <mallum@openedhand.com>
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* Copyright (C) 2006-2007 OpenedHand
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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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#ifndef __CLUTTER_BACKEND_GLX_H__
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#define __CLUTTER_BACKEND_GLX_H__
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#include <glib-object.h>
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#include <clutter/clutter-event.h>
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#include <clutter/clutter-backend.h>
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <GL/glx.h>
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#include <GL/gl.h>
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#include "../x11/clutter-backend-x11.h"
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#include "clutter-glx.h"
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_BACKEND_GLX (clutter_backend_glx_get_type ())
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#define CLUTTER_BACKEND_GLX(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_BACKEND_GLX, ClutterBackendGLX))
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#define CLUTTER_IS_BACKEND_GLX(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_BACKEND_GLX))
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#define CLUTTER_BACKEND_GLX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_BACKEND_GLX, ClutterBackendGLXClass))
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#define CLUTTER_IS_BACKEND_GLX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_BACKEND_GLX))
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#define CLUTTER_BACKEND_GLX_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_BACKEND_GLX, ClutterBackendGLXClass))
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typedef struct _ClutterBackendGLX ClutterBackendGLX;
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typedef struct _ClutterBackendGLXClass ClutterBackendGLXClass;
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typedef enum ClutterGLXVBlankType {
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CLUTTER_VBLANK_NONE = 0,
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CLUTTER_VBLANK_GLX_SWAP,
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CLUTTER_VBLANK_GLX,
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CLUTTER_VBLANK_DRI
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} ClutterGLXVBlankType;
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typedef int (*GetVideoSyncProc) (unsigned int *count);
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typedef int (*WaitVideoSyncProc) (int divisor,
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int remainder,
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unsigned int *count);
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typedef int (*SwapIntervalProc) (int interval);
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typedef void (*CopySubBufferProc)(Display *dpy,
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GLXDrawable drawable,
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int x, int y, int width, int height);
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typedef void (*BlitFramebufferProc) (GLint srcX0,
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GLint srcY0,
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GLint srcX1,
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GLint srcY1,
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GLint dstX0,
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GLint dstY0,
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GLint dstX1,
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GLint dstY1,
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GLbitfield mask,
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GLenum filter);
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struct _ClutterBackendGLX
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{
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ClutterBackendX11 parent_instance;
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int error_base;
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int event_base;
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/* Single context for all wins */
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gboolean found_fbconfig;
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GLXFBConfig fbconfig;
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GLXContext gl_context;
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Window dummy_xwin;
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GLXWindow dummy_glxwin;
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/* Vblank stuff */
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GetVideoSyncProc get_video_sync;
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WaitVideoSyncProc wait_video_sync;
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SwapIntervalProc swap_interval;
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gint dri_fd;
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ClutterGLXVBlankType vblank_type;
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gboolean can_blit_sub_buffer;
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CopySubBufferProc copy_sub_buffer;
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BlitFramebufferProc blit_framebuffer;
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/* props */
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Atom atom_WM_STATE;
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Atom atom_WM_STATE_FULLSCREEN;
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};
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struct _ClutterBackendGLXClass
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{
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ClutterBackendX11Class parent_class;
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};
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GType clutter_backend_glx_get_type (void) G_GNUC_CONST;
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gboolean
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_clutter_backend_glx_get_fbconfig (ClutterBackendGLX *backend_x11,
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GLXFBConfig *config);
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void
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_clutter_backend_glx_blit_sub_buffer (ClutterBackendGLX *backend_glx,
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GLXDrawable drawable,
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int x, int y, int width, int height);
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G_END_DECLS
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#endif /* __CLUTTER_BACKEND_GLX_H__ */
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