Mavericks下的OpenGL 4.1(?) [英] OpenGL 4.1(?) under Mavericks

问题描述

我刚刚将MacBook Pro升级到包括Xcode在内的Mavericks(MacOS 10.9). 根据Apple的"OpenGL功能表"，此版本具有支持 对于OpenGL 4.1，但是对glGetString(GL_VERSION)的调用返回"1.2"和我的GLSL 以"#version 330"开头的3.30着色器拒绝加载，并说 版本不受支持.

I've just upgraded my MacBook Pro to Mavericks (MacOS 10.9), including Xcode. According to Apple's "OpenGL Capabilities Table", this version has support for OpenGL 4.1, but a call to glGetString(GL_VERSION) returns "1.2" and my GLSL 3.30 shader, which begins with "#version 330" refuses to load, saying that version is not supported.

我需要对Mavericks进行一些操作以启用4.1支持吗?

Do I need to do something to Mavericks to enable 4.1 support?

推荐答案

在OS X上使用较低级别的API之一请求像素格式时，需要在属性列表中添加以下内容，才能使用核心资料:

When you request your pixel format using one of the lower-level APIs on OS X, you need to add the following to your attribute list in order to use a core profile:

  kCGLPFAOpenGLProfile,     kCGLOGLPVersion_3_2_Core

NSOpenGL:

  NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core

现在，尽管特定常量名为 ... >，但实际上意味着请求一个上下文，该上下文删除所有不推荐使用的功能并至少支持OpenGL 3.2(换句话说就是核心个人资料).您可以使用相同的常量获得4.1或3.3上下文；老实说，在常量中包含实际版本号可能是一个糟糕的选择.

Now, while the particular constant is named ...3_2Core, what it actually means is request a context that removes all deprecated features and supports at least OpenGL 3.2 (a core profile, in other words). You can get a 4.1 or 3.3 context using this same constant; in all honesty, including an actual version number in the constant was probably a poor choice.

如果您在请求像素格式时未指定此选项，则OS X将分别为您提供kCGLOGLPVersion_Legacy或NSOpenGLProfileVersionLegacy.这将限制您使用OpenGL 2.1功能.

If you do not specify this when you request your pixel format, OS X will give you kCGLOGLPVersion_Legacy or NSOpenGLProfileVersionLegacy respectively. And this will limit you to OpenGL 2.1 functionality.

如果您使用的是更高级别的框架，那么您将需要查阅您的API参考.但是请注意，在OS X上，您必须具有 core 配置文件上下文，才能访问比OpenGL 2.1更高的任何内容.

If you are using a higher-level framework, then you will need to consult your API reference. However, be aware that on OS X you must have a core profile context to access anything newer than OpenGL 2.1.

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