我已经为Mac OS X 10.5及更高版本编写了一个OpenGL屏幕保护程序,它显示了使用行军立方体构建的旋转心脏。它工作正常,在我的黑13.3" 发展MacBook上运行的雪豹(10.6),漂亮而有光泽。Mac OS X 10.6中的OpenGL对象光鲜亮丽,但不是10.5。为什么?
但是,当我尝试在一个新的MacBook Pro,但运行Leopard(10.5),心脏ISN没有光泽,看起来好像只有环境光/漫射光,但没有镜面光,就好像我把光的镜面反射分量设置为0一样。新的Macbook有一块Nvidia显卡,一块较旧的运行10.6有一个英特尔XMA3100。
她e是我的OpenGL初始化代码。心脏是使用行军立方体创建的,我也在计算法向量。
- (void)setUpOpenGL { [[glView openGLContext] makeCurrentContext]; // Synchronize buffer swaps with vertical refresh rate GLint swapInterval = 1; [[glView openGLContext] setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval]; glShadeModel(GL_SMOOTH); glClearDepth(1.0); glClearColor (0.0, 0.0, 0.0, 0.0); glEnable(GL_DEPTH_TEST); // Light GLfloat ambient_light[] = { 0.2f, 0.2f, 0.2f, 1.0f }; GLfloat diffuse_light[] = { 1.0f, 1.0f, 1.0f, 1.0f }; GLfloat specular_light[] = { 1.0f, 1.0f, 1.0f, 1.0f }; GLfloat position_light[] = { 0.0f, 0.0f, -1.0f, 0.0f }; glEnable(GL_LIGHT0); glEnable(GL_LIGHTING); glLightfv(GL_LIGHT0, GL_AMBIENT, ambient_light); glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse_light); glLightfv(GL_LIGHT0, GL_SPECULAR, specular_light); glLightfv(GL_LIGHT0, GL_POSITION, position_light); // Material glEnable(GL_COLOR_MATERIAL); glColorMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE); GLfloat mat_ambient[] = {0.7, 0.0, 0.0, 1.0}; GLfloat mat_diffuse[] = { 0.7, 0.0, 0.0, 1.0 }; GLfloat mat_specular[] = { 0.0, 0.0, 0.0, 0.0 }; GLfloat mat_shininess[] = { 100.0 }; glColor3f(1.0, 0.0, 0.0); glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient); glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); // Copy isosurface vertices to graphics array glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_NORMAL_ARRAY); glVertexPointer(3, GL_FLOAT, 0, [marchingCubes vertices]); glNormalPointer(GL_FLOAT, 0, [marchingCubes normals]); }
实际的绘图代码如下所示:
- (void)drawRect:(NSRect)rect { [super drawRect:rect]; [[glView openGLContext] makeCurrentContext]; glDrawBuffer(GL_BACK); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Adjust viewpoint to give heart beat effect glMatrixMode(GL_MODELVIEW); glLoadIdentity(); gluLookAt(0, radius, 2*radius/3, 0, 0, 0, 0, 0, 1); // Adjust rotation to make heart spin glRotatef(rotation, 0.0f, 0.0f, 1.0f); // Draw heart glDrawArrays(GL_TRIANGLES, 0, [marchingCubes vertexCount]/3); glFlush(); [[glView openGLContext] flushBuffer]; // Rotate and scale a bit rotation += 1.0f; radius = 4.0 + 0.25*sin(rotation/4); }
任何想法,为什么镜面照明区别?某些图形卡是否支持高光照明?任何指针都非常感谢。
从来没有想通了这一点,但开源,开源项目:https://github.com/thinkski/ValentineGL – 2016-05-17 23:56:52