#ifndef SAY_BUFFER_H_
#define SAY_BUFFER_H_

#include "say_basic_type.h"
#include "say_array.h"
#include "say_table.h"

#define SAY_STATIC  GL_STATIC_DRAW_ARB
#define SAY_STREAM  GL_STREAM_DRAW_ARB
#define SAY_DYNAMIC GL_DYNAMIC_DRAW_ARB

typedef struct {
  size_t vtype;

  GLuint vbo;
  GLenum type;

  say_table *vaos;

  say_array *buffer;
} say_buffer;

say_buffer *say_buffer_create(size_t vtype, GLenum type, size_t size);
void say_buffer_free(say_buffer *buf);

void *say_buffer_get_vertex(say_buffer *buf, size_t id);

void say_buffer_bind(say_buffer *buf);
void say_buffer_unbind();

void say_buffer_update_part(say_buffer *buf, size_t index, size_t size);
void say_buffer_update(say_buffer *buf);

size_t say_buffer_get_size(say_buffer *buf);
void say_buffer_resize(say_buffer *buf, size_t size);

#endif