Glen.exe Shows How to Enumerate Pixel Formats in OpenGL (176752)
The information in this article applies to:
- Microsoft Win32 Application Programming Interface (API), when used with:
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional
This article was previously published under Q176752 SUMMARY
The GLEnum sample provides a demonstration of how to enumerate pixel
formats and method for checking the available pixel formats provided on
your machine. The GLEnum sample is included in Glen.exe.
The following file is available for download from the Microsoft Download Center:
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to Obtain Microsoft Support Files from Online Services
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GLEnum allows you check the capabilities of the available pixel formats
available on your system quickly and easily. There are many generic pixel
formats that are always available, but there may be additional ones if your
video adapter provides 3D acceleration. You should use these accelerated
formats whenever they are available.
When you simply specify a pixel format descriptor and send it to the
ChoosePixelFormat and SetPixelFormat functions, allows a generic mapper to determine what pixel format to use. You can gain total control over this selection process by doing your own enumeration, as demonstrated in GLEnum. One method to do this is to associate a relative weight to each attribute you are interested in, enumerate all the available formats, and then choose the pixel-format descriptor with the highest weight.
GLEnum demonstrates how to enumerate pixel formats and shows you the
contents of each pixel format. When you enumerate pixel formats for your
OpenGL applications, you choose one of the enumerated pixel formats for
your application to use. The choice you make is totally dependent on what
attributes your OpenGL program needs.
| Modification Type: | Minor | Last Reviewed: | 3/21/2005 |
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| Keywords: | kbdownload kbfile kbinfo kbSample KB176752 kbAudDeveloper |
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