mutter/cogl/winsys/cogl-context-winsys.h

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* 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, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_CONTEXT_WINSYS_H
#define __COGL_CONTEXT_WINSYS_H
#ifdef COGL_HAS_XLIB_SUPPORT
#include <X11/extensions/Xdamage.h>
#include <X11/Xlib.h>
#endif
#ifdef COGL_HAS_GLX_SUPPORT
#include <GL/glx.h>
#endif
typedef enum
{
COGL_WINSYS_FEATURE_TEXTURE_FROM_PIXMAP = 1
} CoglWinsysFeatureFlags;
#ifdef COGL_HAS_XLIB_SUPPORT
typedef struct _CoglXlibTrapState CoglXlibTrapState;
struct _CoglXlibTrapState
{
/* These values are intended to be internal to
_cogl_xlib_{un,}trap_errors but they need to be in the header so
that the struct can be allocated on the stack */
int (* old_error_handler) (Display *, XErrorEvent *);
int trapped_error_code;
CoglXlibTrapState *old_state;
};
#endif /* COGL_HAS_XLIB_SUPPORT */
#ifdef COGL_HAS_GLX_SUPPORT
typedef struct
{
/* This will be -1 if there is no cached config in this slot */
int depth;
gboolean found;
GLXFBConfig fb_config;
gboolean can_mipmap;
} CoglWinsysCachedConfig;
#define COGL_WINSYS_N_CACHED_CONFIGS 3
typedef enum
{
COGL_WINSYS_RECTANGLE_STATE_UNKNOWN,
COGL_WINSYS_RECTANGLE_STATE_DISABLE,
COGL_WINSYS_RECTANGLE_STATE_ENABLE
} CoglWinsysRectangleState;
#endif /* COGL_HAS_GLX_SUPPORT */
typedef struct
{
/* These are specific to winsys backends supporting Xlib. This
should probably eventually be moved into a separate file specific
to Xlib when Cogl gains a more complete winsys abstraction */
#ifdef COGL_HAS_XLIB_SUPPORT
/* This will be -1 if the damage extension is not support, or it
will be the event number offset for damage events if it is */
int damage_base;
/* List of callback functions that will be given every Xlib event */
GSList *event_filters;
/* Current top of the XError trap state stack. The actual memory for
these is expected to be allocated on the stack by the caller */
CoglXlibTrapState *trap_state;
#endif
#ifdef COGL_HAS_GLX_SUPPORT
CoglWinsysCachedConfig glx_cached_configs[COGL_WINSYS_N_CACHED_CONFIGS];
/* Whether the texture rectangle extension should be used */
CoglWinsysRectangleState rectangle_state;
#endif
/* Function pointers for winsys specific extensions */
#define COGL_WINSYS_FEATURE_BEGIN(a, b, c, d, e)
#define COGL_WINSYS_FEATURE_FUNCTION(ret, name, args) \
ret (APIENTRY * pf_ ## name) args;
#define COGL_WINSYS_FEATURE_END()
#include "cogl-winsys-feature-functions.h"
#undef COGL_WINSYS_FEATURE_BEGIN
#undef COGL_WINSYS_FEATURE_FUNCTION
#undef COGL_WINSYS_FEATURE_END
CoglWinsysFeatureFlags feature_flags;
} CoglContextWinsys;
#endif /* __COGL_CONTEXT_WINSYS_H */