multi_tex.h

/*
The MIT License (MIT)

Copyright (c) 2014 Adam Simpson

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.
*/

#ifndef MULTI_TEX_H
#define MULTI_TEX_H

#include "ogl_utils.h"
#include "fractal.h"

#define NUM_TEXTURES 2
#define LEFT 0
#define RIGHT 1

typedef struct texture_t
{
    // OpenGL|ES state
    gl_t *gl_state;

    // Program handle
    GLuint program;

    // Locations
    GLint position_location;
    GLint tex_coord_location;
    GLint tex_location;

    // Texture handles
    GLuint textures[NUM_TEXTURES];

    // Texture attributes
    GLsizei tex_width[NUM_TEXTURES];
    GLsizei tex_height[NUM_TEXTURES];

    GLuint vbo;
    GLuint ebo;

    int terminate;
} texture_t;

void update_texture_rows(texture_t *state, int fractal, GLsizei start_row, GLuint num_rows, GLubyte *row_pixels);
void update_fractal_rows(texture_t *state, int fractal, unsigned int start_row, unsigned int num_rows, unsigned char *row_pixels);
void create_textures(texture_t *state, FRAC_INFO *frac_left, FRAC_INFO *frac_right);
void create_vertices(texture_t *state);
void create_shaders(texture_t *state);
void draw_textures(texture_t *state);
//void show_left_tex_fullscreen(texture_t *state);
//void show_right_tex_fullscreen(texture_t *state);
//void show_both_textures(texture_t *state);

#endif