102 lines
3.3 KiB
C
102 lines
3.3 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2010 Intel Corporation.
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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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* Authors:
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* Damien Lespiau <damien.lespiau@intel.com>
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*/
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#ifndef __COGL_BUFFER_PRIVATE_H__
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#define __COGL_BUFFER_PRIVATE_H__
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#include <glib.h>
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#include "cogl.h"
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#include "cogl-object.h"
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#include "cogl-buffer.h"
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G_BEGIN_DECLS
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#define COGL_BUFFER(buffer) ((CoglBuffer *)(buffer))
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#define COGL_BUFFER_SET_FLAG(buffer, flag) \
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((buffer)->flags |= (COGL_BUFFER_FLAG_ ## flag))
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#define COGL_BUFFER_CLEAR_FLAG(buffer, flag) \
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((buffer)->flags &= ~(COGL_BUFFER_FLAG_ ## flag))
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#define COGL_BUFFER_FLAG_IS_SET(buffer, flag) \
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((buffer)->flags & (COGL_BUFFER_FLAG_ ## flag))
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typedef struct _CoglBufferVtable CoglBufferVtable;
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struct _CoglBufferVtable
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{
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guint8 * (* map) (CoglBuffer *buffer,
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CoglBufferAccess access);
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void (* unmap) (CoglBuffer *buffer);
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gboolean (* set_data) (CoglBuffer *buffer,
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unsigned int offset,
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const guint8 *data,
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unsigned int size);
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};
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typedef enum _CoglBufferFlags
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{
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COGL_BUFFER_FLAG_NONE = 0,
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COGL_BUFFER_FLAG_BUFFER_OBJECT = 1UL << 0, /* real openGL buffer object */
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COGL_BUFFER_FLAG_MAPPED = 1UL << 1
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} CoglBufferFlags;
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struct _CoglBuffer
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{
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CoglObject _parent;
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const CoglBufferVtable *vtable;
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CoglBufferFlags flags;
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GLuint gl_handle; /* OpenGL handle */
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unsigned int size; /* size of the buffer, in bytes */
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CoglBufferUsageHint usage_hint;
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CoglBufferUpdateHint update_hint;
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guint8 *data; /* points to the mapped memory when
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* the CoglBuffer is a VBO, PBO, ... or
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* points to allocated memory in the
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* fallback paths */
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};
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void _cogl_buffer_initialize (CoglBuffer *buffer,
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unsigned int size,
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CoglBufferUsageHint usage_hint,
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CoglBufferUpdateHint update_hint);
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void _cogl_buffer_fini (CoglBuffer *buffer);
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void _cogl_buffer_bind (CoglBuffer *buffer,
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GLenum target);
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GLenum _cogl_buffer_access_to_gl_enum (CoglBufferAccess access);
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GLenum _cogl_buffer_hints_to_gl_enum (CoglBufferUsageHint usage_hint,
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CoglBufferUpdateHint update_hint);
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G_END_DECLS
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#endif /* __COGL_BUFFER_PRIVATE_H__ */
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