如何使用 Qt5 在 OpenGL 中启用多重采样(抗锯齿)? [英] How do I enable multisampling (antialiasing) in OpenGL with Qt5?

问题描述

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?

How do I enable multisampling when I create the window? How should I initialize OpenGL to match?

推荐答案

我花了一段时间才弄明白.

Took me a while to figure this one out.

诀窍是在 QWindow 的构造函数中使用 QSurfaceFormat，如下所示:

The trick is to use a QSurfaceFormat in your QWindow's constructor like so:

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();

然后，在初始化 OpenGL 时:

And later, when initialising OpenGL:

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

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