Marius Kintel

@cjmayo Not sure why the shader compilation fails, but I'll update my shader compilation code to report errors better. Sometime today depending on how quickly I can do it.

@cjmayo Try #5008 now. #5005 was already merged to master. There was a bug which I fixed, and the shader compiler should now output a better error message.

I wonder if the GL error happens before the Renderer constructor is called. Could you try inserting this at the start of `Renderer::setupShader()`? ``` glCheckd("Renderer::setupShader()", __FILE__, __LINE__); ```

Thanks, so _something_ is going wrong earlier. It's hard to debug for me, but if you have the opportunity to sprinkle `glCheckd("something", __FILE__, __LINE__);` statements around trying to pin down...

I can try to remote-diagnose it, but need more info: Could you post your cmake output, plus the output of Help->Library info?

I think the first step is to check if we can use OpenGL as initialized by Qt, basically https://doc.qt.io/qt-6/qopenglwidget.html#details

I think we can skip the GL error check on glLinkProgram(), considering we inspect the results afterwards. If everything else works, you get the correct shaders etc., we can probably...

Closing as fixed

I agree that a new module makes more sense. `heightmap` sounds like a good name. API design is hard though. Some notes: * `doubleSided`: It feels like this can be...

Thanks @roel-v - I added checkboxes to the TODO list. Let's check them off as items are resolved.