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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_ARRAY_H_
#define _YAGL_GLES_ARRAY_H_
#include "yagl_types.h"
/*
* This structure represents GLES array, such arrays are
* typically set up by calls to 'glColorPointer', 'glVertexPointer',
* 'glVertexAttribPointer', etc.
*
* Note that we can't call host 'glVertexAttribPointer' right away
* when target 'glVertexAttribPointer' call is made. We can't just
* transfer the data from target to host and feed it to
* host 'glVertexAttribPointer' since the data that pointer points to
* may be changed later, thus, we must do the transfer right before host
* OpenGL will attempt to use it. Host OpenGL will attempt to use
* the array pointer on 'glDrawArrays' and 'glDrawElements', thus, we must
* do the transfer right before those calls. For this to work, we'll
* store 'apply' function together with an array, this function will be
* responsible for calling host 'glVertexAttribPointer', 'glColorPointer'
* or whatever.
*/
struct yagl_gles_array;
struct yagl_gles_buffer;
/*
* Calls the corresponding host array function.
*/
typedef void (*yagl_gles_array_apply_func)(struct yagl_gles_array */*array*/,
uint32_t /*first*/,
uint32_t /*count*/,
const GLvoid */*ptr*/,
void */*user_data*/);
struct yagl_gles_array
{
GLuint index;
GLint size;
GLenum type;
GLenum actual_type;
int el_size;
int actual_el_size;
GLboolean normalized;
GLsizei stride;
GLsizei actual_stride;
GLuint divisor;
int integer;
/*
* Specifies if array data needs to be converted before transferring to
* host OpenGL occurs.
* This could be used with GL_FIXED or GL_BYTE types, then data is
* converted to GL_FLOAT or GL_SHORT respectively. Setting this flag
* when yagl_gles_array::type is not either GL_FIXED or GL_FLOAT is
* programming error.
*/
int need_convert;
/*
* Is array enabled by 'glEnableClientState'/'glEnableVertexAttribArray'.
*/
int enabled;
struct yagl_gles_buffer *vbo;
union
{
const GLvoid *ptr;
struct
{
GLintptr offset;
GLintptr actual_offset;
};
};
yagl_gles_array_apply_func apply;
void *user_data;
};
void yagl_gles_array_init(struct yagl_gles_array *array,
GLuint index,
yagl_gles_array_apply_func apply,
void *user_data);
void yagl_gles_array_cleanup(struct yagl_gles_array *array);
void yagl_gles_array_enable(struct yagl_gles_array *array, int enable);
int yagl_gles_array_update(struct yagl_gles_array *array,
GLint size,
GLenum type,
int need_convert,
GLboolean normalized,
GLsizei stride,
const GLvoid *ptr,
int integer);
int yagl_gles_array_update_vbo(struct yagl_gles_array *array,
GLint size,
GLenum type,
int need_convert,
GLboolean normalized,
GLsizei stride,
struct yagl_gles_buffer *vbo,
GLintptr offset,
int integer);
void yagl_gles_array_apply(struct yagl_gles_array *array);
void yagl_gles_array_set_divisor(struct yagl_gles_array *array, GLuint divisor);
void yagl_gles_array_transfer(struct yagl_gles_array *array,
uint32_t first,
uint32_t count,
GLsizei primcount);
#endif
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