GL_MULTISAMPLE在哪里定义？ [英] where is GL_MULTISAMPLE defined?

问题描述

虽然我不喜欢阅读OpenGL红皮书，但我仍在这样做，因为它是为初学者设计的唯一的图书，教程和/或文档不能完全替代书虽然很重要。

Although I have been discouraged from reading the OpenGL redbook, I am still doing it, because it is the only book designed for beginners, and tutorials and/or documentation don't quite substitute for a book although very important. So much for justifying myself :)

现在，有一个使用multisampling的抗锯齿的例子，涉及
glEnable（GL_MULTISAMPLE）;

Now, there's an example for antialiasing using multisampling, which involved glEnable(GL_MULTISAMPLE);

我使用Qt，我得到一个编译错误，因为GL_MULTISAMPLE是一个未声明的标识符。我目前看到以下原因：

I am using Qt, and I get a compile error, because GL_MULTISAMPLE is an undeclared identifier. I currently see the following reasons:

• 对于某些实现，包括Qt中的一个，GL_MULTISAMPLE没有定义。
  
• 不在GL / gl.h或GL / glu.h中，而是在< QGLWidget> 中不包含的其他标题中。

• For some implementations, including the one that comes with Qt, GL_MULTISAMPLE is not defined.
• It is not in GL/gl.h or GL/glu.h but rather in some other header which is not included in <QGLWidget> or does not come with Qt
• It is obsolete/deprecated

是上述之一原因正确吗？如果没有，这是我没有它的原因，我如何获得？提前感谢

Is one of the above reasons correct? If not, which is the reason I don't have it and how can I obtain? Thanks in advance

推荐答案

GL_MULTISAMPLE >用于扩展到OpenGL，直到1.3，并且是否实现取决于您的硬件/驱动程序/供应商实现。您可能实际想改用 GL_MULTISAMPLE_ARB 。

另请参阅：

如果您使用的是Windows，则提供OpenGL头文件的平台不会包含此宏。

• http://www.opengl.org/resources/ faq / technical / extensions.htm


• http://www.gamedev.net/community/forums/topic.asp?topic_id=536666

• http://www.opengl.org/resources/faq/technical/extensions.htm
• http://www.gamedev.net/community/forums/topic.asp?topic_id=536666

RA的响应将简化扩展处理 - 我更喜欢使用 GLee 自己，但是他们是可以互换的（和GLee的惰性初始化，帮助我解决一个关键问题在Solaris），但GLEW保持更新的（GLee已经过时，它给我的注意。）。

RA's response will simplify extension handling - I prefer the use of GLee myself, but they are pretty much interchangeable (and GLee does lazy init which helped me fix a critical issue on Solaris), but GLEW is kept more up to date (GLee is outdated now that Kos has brought it to my attention.).

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