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openglcrashwgl

ChoosePixelFormat crashes, even when LoadLibrary & GetProcAddress is used

On a single computer my app is crashing during OpenGL initialization, particularlu call to ChoosePixelFormat. I found this:

wglCreateContext in C# failing but not in managed C++

Call to a GL function at the beginning of the app (gefore any DC function) didn't help at all. So I loaded the opengl32.dll manually and obtained wglChoosePixelFormat pointer. On computers, where it worked, it still works, but it didn't help the issue on that particular computer at all.

Any ideas? For the record, that computer is on Win7 64. I don't have access to it, but I'll ask the person to tell me, which GPU it has. Ok, the computer is ACER Aspire 7740 with ATI Mobility Radeon HD 5650

Solution

  • It turns out it was a malfunctioning driver, ATI as usual... After installing newest compatible Catalyst, it starts working correctly.