'What is causing this OpenTK GLControl texture mapping problem?
I'm working on a Winforms project using GLControl 3.10 and I'm trying to use some legacy code written for mobile devices using Xamarin and OpenTK 1.0. It's almost working but I'm having a problem with texture mapping. I have created a test cube textured with transparent PNG images. The first screen shot below is how it appears on the mobile devices. The second shows how it appears in the new WinForms project. I've tried adjusting pretty much every GL function call I can find and tried modifying the shaders but I have no idea where the problem might lie. Does anyone have any suggestions where to look?
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