OpenGL VBO正常/照明问题

OpenGL VBO Normals/Lighting Issue

本文关键字：照明 问题 正常 VBO OpenGL      更新时间：2023-10-16

我无法通过VBO正确渲染正态。以下是我正在使用的代码，顶点是持有顶点的数组，而正态则是持有正常的数组：

//Create the buffers and such
GLuint VBOID;
glGenBuffersARB(1, &VBOID);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBOID);
glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(vertices) + sizeof(normals), 0, GL_STATIC_DRAW_ARB);
glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(vertices), vertices);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
///Start loop
cout << "Starting" << endl;
while( window.isOpen() ) {
    sf::Event event;
    while( window.pollEvent( event ) ) {
        if( event.type == sf::Event::Closed )
            window.close();
    }
    fps = FPS.getElapsedTime().asSeconds();
    fps = 1 / fps;
    FPS.restart();
    if(ShowFPS.getElapsedTime().asSeconds() > 1)
    {
        cout << "FPS: " << fps << "t FrameTime: " << 1000 / fps << endl;
        ShowFPS.restart();
    }
    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(50.0, 1.0, 1.0, 5000);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(5, 5, 5, 0, 0, 0, 0, 1, 0);
    //VBO
    glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBOID);
    glEnableClientState(GL_NORMAL_ARRAY);
    glEnableClientState(GL_VERTEX_ARRAY);
    glColor3f(1, 0, 0);
    glRotatef(25 * TurnTimer.getElapsedTime().asSeconds(), 0, 1, 0);
    glRotatef(15 * TurnTimer.getElapsedTime().asSeconds(), 1, 0, 0);
    glNormalPointer(GL_FLOAT, 0, (void*)sizeof(vertices));
    glVertexPointer(3, GL_FLOAT, 0, 0);
    glDrawArrays(GL_TRIANGLES, 0, NumOfF*3);
    glDisableClientState(GL_VERTEX_ARRAY);
    glDisableClientState(GL_NORMAL_ARRAY);
    glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
    window.display();
}

glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(vertices), vertices);

好，那么您在哪里为正常？

做此部分的部分在哪里

另外，请停止使用ARB扩展功能。近十年来，它一直是核心OpenGL功能。已经删除ARB后缀。

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