Graphics Img libraries for linux/mac os

waiwai64

　　1.http://cairographics.org/
　　编译使用方法:
　　http://www.gaia-gis.it/spatialite-2.4.0-4/mingw_how_to.html#libcairo

　　2.small lib:
　　http://cimg.sourceforge.net/
　　编译和使用
　　http://cimg.sourceforge.net/reference/group__cimg__overview.html
　　3.Simple OpenGL Image Library(建议使用FreeImg Library)
　　跨平台的opengl 材质资源管理库
　　http://lonesock.net/soil.html
　　code block 使用library:Using libraries with Code::Blocks
　　http://www.learncpp.com/cpp-tutorial/a3-using-libraries-with-codeblocks/
　　opengl使用freeImg示例

//
thisIsInitGL(){
loadTexture();
}
///Now the interesting code:
loadTexture(){
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);
    cout<<"The size of the image is: "<<textureFile<<" es "<<w<<"*"<<h<<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;
    }
   
    //Now generate the OpenGL texture object
   
    glGenTextures(1, &texturaID);
    glBindTexture(GL_TEXTURE_2D, texturaID);
    glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA, w, h, 0, GL_RGBA,GL_UNSIGNED_BYTE,(GLvoid*)textura );
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
   
    GLenum huboError = glGetError();
    if(huboError){
        
        cout<<"There was an error loading the texture"<<endl;
    }
   
}　　//
　　4.a completely OpenSourced alternative to the OpenGL Utility Toolkit (GLUT) library
http://freeglut.sourceforge.net/