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我制作了绘制立方体的 OpenGL 应用程序。我想添加抗锯齿功能，但没有成功。也许有人可以提供帮助（用户 Xcode 6.1.1、GLUT、OpenGL）？

我需要在没有任何外部库的情况下创建抗锯齿功能。

下面的代码的结果。

GLfloat xRotated, yRotated, zRotated; void init(void){
glClearColor(0,0,0,0);

glEnable (GL_DEPTH_TEST);

// Turn on antialiasing, and give hint to do the best
// job possible.
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);

glEnable(GL_POINT_SMOOTH);
glHint(GL_POINT_SMOOTH_HINT, GL_LINEAR);

glEnable(GL_LINE_SMOOTH);
glHint(GL_LINE_SMOOTH_HINT, GL_LINEAR);

glEnable(GL_POLYGON_SMOOTH);
glHint(GL_POLYGON_SMOOTH_HINT, GL_LINEAR);

glEnable(GL_MULTISAMPLE); } void DrawCube(void) {
glMatrixMode(GL_MODELVIEW);
// clear the drawing buffer.
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();

glTranslatef(0.0,0.0,-10.5);
glRotatef(xRotated,1.0,0.0,0.0);
// rotation about Y axis
glRotatef(yRotated,0.0,1.0,0.0);
// rotation about Z axis
glRotatef(zRotated,0.0,0.0,1.0);

glBegin(GL_QUADS);        // Draw The Cube Using quads
glColor3f(0.0f,1.0f,0.0f);    // …