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/*
* YaGL
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd. All rights reserved.
*
* Contact :
* Stanislav Vorobiov <s.vorobiov@samsung.com>
* Jinhyung Jo <jinhyung.jo@samsung.com>
* YeongKyoon Lee <yeongkyoon.lee@samsung.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* Contributors:
* - S-Core Co., Ltd
*
*/
#ifndef _YAGL_GLES_BUFFER_H_
#define _YAGL_GLES_BUFFER_H_
#include "yagl_types.h"
#include "yagl_object.h"
#include "yagl_range_list.h"
/*
* VBO implementation is somewhat tricky because
* we must correctly handle GL_FIXED data type, which must be
* converted to GL_FLOAT, and GL_BYTE data type, which (in some cases)
* must be converted to GL_SHORT. Buffer objects may be bound to
* multiple contexts, so there may be several VBOs using the
* same buffer object, but having different data types. We handle this
* by having three 'yagl_gles_buffer_part' objects: one for GL_FIXED type,
* one for GL_BYTE type and the other for all other types.
* Each 'yagl_gles_buffer_part' object has a separate global buffer name
* and a range list that consists of 'glBufferData' and 'glBufferSubData'
* ranges which haven't been processed yet. When a VBO is used we walk
* the appropriate range list, make conversions, clear it and call
* 'glBufferData' or 'glBufferSubData' as many times as needed.
*/
#define YAGL_NS_BUFFER 0
struct yagl_gles_buffer_part
{
yagl_object_name global_name;
struct yagl_range_list range_list;
};
struct yagl_gles_buffer
{
struct yagl_object base;
struct yagl_gles_buffer_part default_part;
struct yagl_gles_buffer_part fixed_part;
struct yagl_gles_buffer_part byte_part;
GLint size;
void *data;
GLenum usage;
void *map_pointer;
GLbitfield map_access;
GLintptr map_offset;
GLsizeiptr map_length;
struct yagl_range_list gpu_dirty_list;
int was_bound;
int cached_minmax_idx;
GLenum cached_type;
GLint cached_offset;
GLint cached_count;
uint32_t cached_min_idx;
uint32_t cached_max_idx;
};
struct yagl_gles_buffer *yagl_gles_buffer_create(void);
/*
* Passing NULL won't hurt, this is for convenience.
*/
void yagl_gles_buffer_acquire(struct yagl_gles_buffer *buffer);
/*
* Passing NULL won't hurt, this is for convenience.
*/
void yagl_gles_buffer_release(struct yagl_gles_buffer *buffer);
void yagl_gles_buffer_set_data(struct yagl_gles_buffer *buffer,
GLint size,
const void *data,
GLenum usage);
int yagl_gles_buffer_update_data(struct yagl_gles_buffer *buffer,
GLint offset,
GLint size,
const void *data);
int yagl_gles_buffer_get_minmax_index(struct yagl_gles_buffer *buffer,
GLenum type,
GLint offset,
GLint count,
uint32_t *min_idx,
uint32_t *max_idx);
void yagl_gles_buffer_bind(struct yagl_gles_buffer *buffer,
GLenum type,
int need_convert,
GLenum target);
void yagl_gles_buffer_transfer(struct yagl_gles_buffer *buffer,
GLenum type,
GLenum target,
int need_convert);
int yagl_gles_buffer_get_parameter(struct yagl_gles_buffer *buffer,
GLenum pname,
GLint *param);
/*
* Assumes that 'access' has already been validated.
*/
int yagl_gles_buffer_map(struct yagl_gles_buffer *buffer,
GLintptr offset,
GLsizeiptr length,
GLbitfield access);
int yagl_gles_buffer_mapped(struct yagl_gles_buffer *buffer);
int yagl_gles_buffer_flush_mapped_range(struct yagl_gles_buffer *buffer,
GLintptr offset,
GLsizeiptr length);
void yagl_gles_buffer_unmap(struct yagl_gles_buffer *buffer);
void yagl_gles_buffer_set_bound(struct yagl_gles_buffer *buffer);
int yagl_gles_buffer_was_bound(struct yagl_gles_buffer *buffer);
int yagl_gles_buffer_is_cpu_dirty(struct yagl_gles_buffer *buffer,
GLenum type,
int need_convert);
void yagl_gles_buffer_set_gpu_dirty(struct yagl_gles_buffer *buffer,
GLint offset,
GLint size);
int yagl_gles_buffer_copy_gpu(struct yagl_gles_buffer *from_buffer,
GLenum from_target,
struct yagl_gles_buffer *to_buffer,
GLenum to_target,
GLint from_offset,
GLint to_offset,
GLint size);
#endif
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