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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 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_INTERNAL_H
#define __COGL_INTERNAL_H
#include "cogl.h"
#include "cogl-matrix-stack.h"
#include "cogl-bitmask.h"
#ifdef COGL_HAS_XLIB_SUPPORT
#include <X11/Xlib.h>
#endif
typedef enum
{
COGL_FRONT_WINDING_CLOCKWISE,
COGL_FRONT_WINDING_COUNTER_CLOCKWISE
} CoglFrontWinding;
typedef enum {
COGL_BOXED_NONE,
COGL_BOXED_INT,
COGL_BOXED_FLOAT,
COGL_BOXED_MATRIX
} CoglBoxedType;
typedef struct _CoglBoxedValue
{
CoglBoxedType type;
int size, count;
gboolean transpose;
union {
float float_value[4];
int int_value[4];
float matrix[16];
float *float_array;
int *int_array;
void *array;
} v;
} CoglBoxedValue;
#ifdef COGL_GL_DEBUG
const char *
cogl_gl_error_to_string (GLenum error_code);
#define GE(x) G_STMT_START { \
GLenum __err; \
(x); \
while ((__err = glGetError ()) != GL_NO_ERROR) \
{ \
g_warning ("%s: GL error (%d): %s\n", \
G_STRLOC, \
__err, \
cogl_gl_error_to_string (__err)); \
} } G_STMT_END
#define GE_RET(ret, x) G_STMT_START { \
GLenum __err; \
ret = (x); \
while ((__err = glGetError ()) != GL_NO_ERROR) \
{ \
g_warning ("%s: GL error (%d): %s\n", \
G_STRLOC, \
__err, \
cogl_gl_error_to_string (__err)); \
} } G_STMT_END
#else /* !COGL_GL_DEBUG */
#define GE(x) (x)
#define GE_RET(ret, x) (ret = (x))
#endif /* COGL_GL_DEBUG */
#define COGL_ENABLE_ALPHA_TEST (1<<1)
#define COGL_ENABLE_VERTEX_ARRAY (1<<2)
#define COGL_ENABLE_COLOR_ARRAY (1<<3)
#define COGL_ENABLE_BACKFACE_CULLING (1<<4)
void
_cogl_features_init (void);
int
_cogl_get_format_bpp (CoglPixelFormat format);
void
_cogl_enable (unsigned long flags);
unsigned long
_cogl_get_enable (void);
void
_cogl_flush_face_winding (void);
/* Disables the texcoord arrays that don't have a corresponding bit
set in the mask and sets ctx->texcoord_arrays_enabled to mask. Note
that it doesn't enable any extra texcoord arrays */
void
_cogl_disable_other_texcoord_arrays (const CoglBitmask *mask);
void
_cogl_transform_point (const CoglMatrix *matrix_mv,
const CoglMatrix *matrix_p,
const float *viewport,
float *x,
float *y);
#ifdef COGL_HAS_XLIB_SUPPORT
/*
* CoglX11FilterReturn:
* @COGL_XLIB_FILTER_CONTINUE: The event was not handled, continues the
* processing
* @COGL_XLIB_FILTER_REMOVE: Remove the event, stops the processing
*
* Return values for the #CoglX11FilterFunc function.
*/
typedef enum _CoglXlibFilterReturn {
COGL_XLIB_FILTER_CONTINUE,
COGL_XLIB_FILTER_REMOVE
} CoglXlibFilterReturn;
/*
* CoglXlibFilterFunc:
*
* A callback function that can be registered with
* _cogl_xlib_add_filter. The function should return
* %COGL_XLIB_FILTER_REMOVE if it wants to prevent further processing
* or %COGL_XLIB_FILTER_CONTINUE otherwise.
*/
typedef CoglXlibFilterReturn (* CoglXlibFilterFunc) (XEvent *xevent,
gpointer data);
/*
* cogl_xlib_handle_event:
* @xevent: pointer to XEvent structure
*
* This function processes a single X event; it can be used to hook
* into external X event retrieval (for example that done by Clutter
* or GDK).
*
* Return value: #CoglXlibFilterReturn. %COGL_XLIB_FILTER_REMOVE
* indicates that Cogl has internally handled the event and the
* caller should do no further processing. %COGL_XLIB_FILTER_CONTINUE
* indicates that Cogl is either not interested in the event,
* or has used the event to update internal state without taking
* any exclusive action.
*/
CoglXlibFilterReturn
_cogl_xlib_handle_event (XEvent *xevent);
/*
* _cogl_xlib_get_display:
*
* Return value: the Xlib display that will be used by the Xlib winsys
* backend. The display needs to be set with _cogl_xlib_set_display()
* before this function is called.
*/
Display *
_cogl_xlib_get_display (void);
/*
* cogl_xlib_set_display:
*
* Sets the Xlib display that Cogl will use for the Xlib winsys
* backend. This function should eventually go away when Cogl gains a
* more complete winsys abstraction.
*/
void
_cogl_xlib_set_display (Display *display);
/*
* _cogl_xlib_add_filter:
*
* Adds a callback function that will receive all X11 events. The
* function can stop further processing of the event by return
* %COGL_XLIB_FILTER_REMOVE.
*/
void
_cogl_xlib_add_filter (CoglXlibFilterFunc func,
gpointer data);
/*
* _cogl_xlib_remove_filter:
*
* Removes a callback that was previously added with
* _cogl_xlib_add_filter().
*/
void
_cogl_xlib_remove_filter (CoglXlibFilterFunc func,
gpointer data);
#endif /* COGL_HAS_XLIB_SUPPORT */
typedef enum _CoglFeatureFlagsPrivate
{
COGL_FEATURE_PRIVATE_PLACE_HOLDER = (1 << 0)
} CoglFeatureFlagsPrivate;
gboolean
_cogl_features_available_private (CoglFeatureFlagsPrivate features);
#endif /* __COGL_INTERNAL_H */
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