Question
When I attempt to perform an analysis in OSLO (e.g. "Source>>View Extended Source Image>>Lambertian"), in the output graphic I get the message: "OpenGL is needed for that plot". What is the problem? How do I correct this situation?
Synopsis
OSLO analysis causes OpenGL error message
Symptoms
OpenGL is a graphics package that aids in the rendering of graphical images. OSLO uses OpenGL to perform some graphical analyses but it first checks to make sure that the Windows installation can run OpenGL before these analyses are performed. Unfortunately, it is this check that OSLO that is failing: OSLO determines that OpenGL is not available when, in fact, it is. This problem will be addressed in a future release of OSLO.
Solution
In the interim, please follow the steps below to suppress this error message in this and future sessions of OSLO.
- Please make sure that there is no "eval_source.ccl" file in the".../private/ccl/" folder. If there is, rename that file to "eval_source.prv"
- Go to the ".../public/ccl/" folder and rename the "eval_source.ccl" file to "eval_source.pub"
- Download the attached file and place it in your ".../public/ccl/" folder.
- Recompile the public CCLs by issuing the following command on the command line: ccl public
- The following message should appear in the text window: *CCL COMPILATION MESSAGES: No errors detected
- Try the "Source" command again. The OpenGL error message should no longer occur.
