在windows + opengl中选择图形设备 [英] Select a graphic device in windows + opengl

问题描述

我知道如何使用openGL打开一个窗口（使用Win32或其他工具包）。但是当系统有2个显卡时。如何选择要渲染的图形设备？我的编程语言是C ++，我专注于窗口，但任何样品将受欢迎。

I know how to open a window with openGL (using Win32 or other toolkits). But when the system have 2 graphics cards. How do I select a graphic device to render? My programming language is C++ and I'm focusing on windows but any sample will be welcome.

编辑：也许这是一个好主意，以更好地解释我的问题，添加一些透视：我的新笔记本电脑有两个显卡。集成的Intel HD和GeForce GT 540M。英特尔卡大多数时间来渲染SO，因为它节省了电池。当游戏启动时，GeForce会自动启动。该系统由nvidia称为optimus（ http://www.nvidia.com/object/optimus_technology.html）。问题是，当我启动我的应用程序，检测到的de opengl驱动程序是2.1，供应商是英特尔，我不知道如何切换到其他设备。

Maybe Its a good idea to explain my problem better, in order to add some perspective: My new laptop have two graphic cards. An integrated Intel HD and a GeForce GT 540M. The intel card works most of the time to render SO, because it save battery. When a game is started, then the GeForce is started automatically. This system is called "optimus" by nvidia ( http://www.nvidia.com/object/optimus_technology.html ). The problem is that when I start my application, de opengl driver detected is 2.1 and the vendor is Intel, and I don't know how to switch to the other device.

最后我发现了这个信息。如果你不使用nvidia，那么它不是太有用，但我可以让任何可以阅读 http://developer.download.nvidia.com/compute/cuda/3_2/toolkit/docs/CUDA_Developer_Guide_for_Optimus_Platforms.pdf

Finally I found this information. It isn't too useful if you are not using nvidia but I let it to any who could read http://developer.download.nvidia.com/compute/cuda/3_2/toolkit/docs/CUDA_Developer_Guide_for_Optimus_Platforms.pdf

推荐答案

我不是100％肯定，但我似乎记得在Windows下这是不可能的，除了在特定屏幕上创建一个窗口。

I am not 100% sure, but I seem to remember that under Windows this is not possible, other than to create a window on a specific screen.

NVidia提供了一个名为 WGL_nv_gpu_affinity 的扩展程序。我不知道这是否仍然可用，是否它的工作，你想要的。

NVidia provided an extension called WGL_nv_gpu_affinity. I'm not sure if this is still available and whether it works as you would like.

编辑：

我发现另一个线程，其中包含此PDF 。不是一个满意的答案也许，但至少一些信息。

I see that similar information is already provided in another thread, with an additonal link to this PDF. Not a satisfying answer perhaps, but at least some info.

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