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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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Damien Lespiau <damien.lespiau@intel.com>
*/
#ifndef __COGL_BUFFER_PRIVATE_H__
#define __COGL_BUFFER_PRIVATE_H__
#include <glib.h>
#include "cogl-handle.h"
#include "cogl-buffer.h"
G_BEGIN_DECLS
#define COGL_BUFFER(buffer) ((CoglBuffer *)(buffer))
#define COGL_BUFFER_SET_FLAG(buffer, flag) \
((buffer)->flags |= (COGL_BUFFER_FLAG_ ## flag))
#define COGL_BUFFER_CLEAR_FLAG(buffer, flag) \
((buffer)->flags &= ~(COGL_BUFFER_FLAG_ ## flag))
#define COGL_BUFFER_FLAG_IS_SET(buffer, flag) \
((buffer)->flags & (COGL_BUFFER_FLAG_ ## flag))
typedef struct _CoglBuffer CoglBuffer;
typedef struct _CoglBufferVtable CoglBufferVtable;
struct _CoglBufferVtable
{
guint8 * (* map) (CoglBuffer *buffer,
CoglBufferAccess access);
void (* unmap) (CoglBuffer *buffer);
gboolean (* set_data) (CoglBuffer *buffer,
unsigned int offset,
const guint8 *data,
unsigned int size);
};
typedef enum _CoglBufferFlags
{
COGL_BUFFER_FLAG_NONE = 0,
COGL_BUFFER_FLAG_BUFFER_OBJECT = 1UL << 0, /* real openGL buffer object */
COGL_BUFFER_FLAG_MAPPED = 1UL << 1
} CoglBufferFlags;
struct _CoglBuffer
{
CoglHandleObject _parent;
const CoglBufferVtable *vtable;
CoglBufferFlags flags;
GLuint gl_handle; /* OpenGL handle */
unsigned int size; /* size of the buffer, in bytes */
CoglBufferUsageHint usage_hint;
CoglBufferUpdateHint update_hint;
guint8 *data; /* points to the mapped memory when
* the CoglBuffer is a VBO, PBO, ... or
* points to allocated memory in the
* fallback paths */
};
void _cogl_buffer_initialize (CoglBuffer *buffer,
unsigned int size,
CoglBufferUsageHint usage_hint,
CoglBufferUpdateHint update_hint);
void _cogl_buffer_fini (CoglBuffer *buffer);
void _cogl_buffer_bind (CoglBuffer *buffer,
GLenum target);
GLenum _cogl_buffer_access_to_gl_enum (CoglBufferAccess access);
GLenum _cogl_buffer_hints_to_gl_enum (CoglBufferUsageHint usage_hint,
CoglBufferUpdateHint update_hint);
G_END_DECLS
#endif /* __COGL_BUFFER_PRIVATE_H__ */
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