/*
 *  main.cpp
 *  TestEnvGlut2
 *
 *  Created by Jos Timanta Tarigan on 8/5/10.
 *  Copyright 2010 Linkoping University. All rights reserved.
 *
 */

/*
 *  main.cpp
 *  TestEnvGlut
 *
 *  Created by Jos Timanta Tarigan on 8/5/10.
 *  Copyright 2010 Linkoping University. All rights reserved.
 *
 */

#include <GLUT/glut.h>

#include <FreeImage/FreeImage.h>

#include <stdio.h>    // for fopen, FILE & NULL
#include <cstdlib>
#include <iostream>


#define PI 3.14159265


int width = 100;
int height = 100;
int size = 10;

GLuint texname = 0;

///Now the interesting code:
void loadTexture(const char* textureFile){
    FREE_IMAGE_FORMAT formato = FreeImage_GetFileType(textureFile,0);//Automatocally detects the format(from over 20 formats!)
    FIBITMAP* imagen = FreeImage_Load(formato, textureFile);

    FIBITMAP* temp = imagen;
    imagen = FreeImage_ConvertTo32Bits(imagen);
    FreeImage_Unload(temp);

    int w = FreeImage_GetWidth(imagen);
    int h = FreeImage_GetHeight(imagen);
    std::cout<<"The size of the image is: "<<textureFile<<" es "<<w<<"*"<<h<<std::endl; //Some debugging code

    GLubyte* textura = new GLubyte[4*w*h];
    char* pixeles = (char*)FreeImage_GetBits(imagen);
    //FreeImage loads in BGR format, so you need to swap some bytes(Or use GL_BGR).

    for(int j= 0; j<w*h; j++){
        textura[j*4+0]= pixeles[j*4+2];
        textura[j*4+1]= pixeles[j*4+1];
        textura[j*4+2]= pixeles[j*4+0];
        textura[j*4+3]= pixeles[j*4+3];
        //cout<<j<<": "<<textura[j*4+0]<<"**"<<textura[j*4+1]<<"**"<<textura[j*4+2]<<"**"<<textura[j*4+3]<<endl;
    }
    std::cout << "finish" << std::endl;
    //Now generate the OpenGL texture object
    std::cerr << "what?" << std::endl;

    glGenTextures(1, &texname);
    std::cerr << "asdf?" << std::endl;
    glBindTexture(GL_TEXTURE_2D, texname);
    std::cout << "wer?" << std::endl;
    glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA, w, h, 0, GL_RGBA,GL_UNSIGNED_BYTE,(GLvoid*)textura );
    std::cout << "is it?" << std::endl;
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

    GLenum huboError = glGetError();
    if(huboError){

        std::cout<<"There was an error loading the texture"<<std::endl;
    }

}

int main ()
{
    loadTexture("2.bmp");

}