/*传入的参数

　　std::string m_fileName;

　　GLenum m_textureTarget = GL_TEXTURE_2D;

　　GLuint m_textureObj;

　　*/

　　Mat img = imread(m_fileName);

    if (img.empty())

    {

        fprintf(stderr, "Can not load image %s\n", m_fileName);

        return -;

    }

    //设置长宽

    int width = img.cols;

    int height = img.rows;

    int channel = img.channels();

    printf(" depth  %d\n", channel);

    //获取图像指针

    int pixellength = width * height * channel;

    GLubyte* pixels = new GLubyte[pixellength];

    memcpy(pixels, img.data, pixellength * sizeof(char));

    //imshow("OpenCV", img);

    glGenTextures(, &m_textureObj);

    glBindTexture(m_textureTarget, m_textureObj);

    //必须一个RGB  一个BGR（opencv的mat类的颜色通道是BGR） 否则会出现颜色偏差

    glTexImage2D(m_textureTarget, , GL_RGB, width, height, , GL_BGR, GL_UNSIGNED_BYTE, pixels);

    //纹理放大缩小使用线性插值

    glTexParameterf(m_textureTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

    glTexParameterf(m_textureTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    glBindTexture(m_textureTarget, );

    free(pixels);

    int picWidth, picHeight;

    int channel = ;

    unsigned char* imageData = SOIL_load_image(m_fileName.c_str(), &picWidth, &picHeight, &channel, SOIL_LOAD_RGB);

    if (imageData == NULL)

    {

        fprintf(stderr, "Can not load image ");

        std::cout << m_fileName << "\n";

        return false;

    }

    //产生指定数量的纹理对象，并将他们的引用句柄放到GLuint数组指针中

    glGenTextures(, &m_textureObj);

   //告诉OpenGL后面所有和纹理相关调用中所引用的是该次绑定的纹理对象，直到新的对象被绑定

    glBindTexture(m_textureTarget, m_textureObj);

    glTexImage2D(m_textureTarget, , GL_RGB, picWidth, picHeight, , GL_RGB, GL_UNSIGNED_BYTE, imageData);

    //纹理放大缩小使用线性插值

    glTexParameterf(m_textureTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

    glTexParameterf(m_textureTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    glBindTexture(m_textureTarget, );

    SOIL_free_image_data(imageData);