如何使用Qt5在OpenGL中启用多重采样（抗锯齿）？

Question

如何在创建窗口时启用多重采样？我应该如何初始化OpenGL以匹配？

Answer 1

花了我一会儿来弄清楚这一点。

关键是在你QWindow的构造使用QSurfaceFormat像这样：

setSurfaceType(QWindow::OpenGLSurface); 
QSurfaceFormat format; 
format.setSamples(4); // Set the number of samples used for multisampling 
setFormat(format);  // Note we set the format on the window... 
create();    // Create the window 

context = new QOpenGLContext(this); 
context->setFormat(format); // ...and set the format on the context too 
context->create(); 

后来，初始化OpenGL的时候：

glEnable(GL_MULTISAMPLE); // This seems to be the default given the configuration above, but just in case that's not universal...