openc2qimage2gltexture

gistfile1.txt

    cv::Mat original = //...

    QImage qtFrame(original.data, original.size().width, original.size().height, original.step, QImage::Format_RGB888);
    qtFrame = qtFrame.rgbSwapped();

    m_GLFrame = QGLWidget::convertToGLFormat(qtFrame);
    
    glColor3f(1, 1, 1);
    glEnable(GL_TEXTURE_2D);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, m_GLFrame.width(), m_GLFrame.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, m_GLFrame.bits() );
    glBegin(GL_QUADS);
    int _w=windowWidth, _h=windowHeight/2;

    glTexCoord2f(0, 1); glVertex2f(0, 0);
    glTexCoord2f(0, 0); glVertex2f(0, _h);
    glTexCoord2f(1, 0); glVertex2f(_w, _h);
    glTexCoord2f(1, 1); glVertex2f(_w, 0);

    glEnd();
    glDisable(GL_TEXTURE_2D);