////////////////////////////////////////////////
void TexQuad::load_image( std::string filename )
////////////////////////////////////////////////
{    
    //The loaded surface
    SDL_Surface *LoadedImage = NULL; 

    //The texture surface
    SDL_Surface *TextureImage = NULL; 
    
    //The format
    SDL_PixelFormat format;
        
    //Set format
    format.palette = NULL;
    format.BitsPerPixel = 32;
    format.BytesPerPixel = 4;
        
    //Set mask
    #if SDL_BYTEORDER == SDL_BIG_ENDIAN
    format.Rmask = 0xFF000000;
    format.Gmask = 0x00FF0000;
    format.Bmask = 0x0000FF00;
    format.Amask = 0x000000FF;
    #else
    format.Rmask = 0x000000FF;
    format.Gmask = 0x0000FF00;
    format.Bmask = 0x00FF0000;
    format.Amask = 0xFF000000;
    #endif
        
    //Set shift
    format.Rshift = 8; format.Gshift = 8; format.Bshift = 8; format.Ashift = 8;
        
    //Set loss
    format.Rloss = 0; format.Gloss = 0; format.Bloss = 0; format.Aloss = 0;
        
    //Load image
    LoadedImage = IMG_Load( filename.c_str() );
    
    //If the image loaded fine
    if( LoadedImage != NULL )
    {
        //Get image dimensions
        imgW = LoadedImage->w;
        imgH = LoadedImage->h;
        
        //Find 2^n width
        textW = 1;
        while( textW < imgW )
        {
            textW *= 2;    
        }
        
        //Find 2^n height
        textH = 1;
        while( textH < imgH )
        {
            textH *= 2;    
        }
        
        //Create 2^n surface
        TextureImage = SDL_CreateRGBSurface( SDL_SWSURFACE, (int)textW, (int)textH, format.BitsPerPixel, format.Rmask, format.Gmask, format.Bmask, format.Amask );
            
        //Blit our image to 2^n surface
        SDL_BlitSurface( LoadedImage, NULL, TextureImage, NULL );
            
        //Get rid of old surface
        SDL_FreeSurface( LoadedImage );
    }
    
    //If the image converted fine
    if( TextureImage != NULL )
    {  
        //Get the dimensions of the texture
        textW = TextureImage->w;
        textH = TextureImage->h;
            
        //Generate texture
        glGenTextures( 1, &texture );

        //Use newly made texture
        glBindTexture( GL_TEXTURE_2D, texture );
        
        //Create texture from loaded surface
        glTexImage2D( GL_TEXTURE_2D, 0, 4, TextureImage->w, TextureImage->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, TextureImage->pixels );
	    
        //Set filtering
        glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
        glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
	    
        //Get rid of temp surface
        SDL_FreeSurface( TextureImage );
    }
}