Our editor relies on the fact that multiple TCastleControl instances work OK. This is turn requires that Lazarus TOpenGLControl (ancestor of our TCastleControl) supports sharing OpenGL resources (CGE caches assume that OpenGL data is shared across contexts). I submitted Lazarus pull requests to fix this: for Qt5 (so you can use it now for CGE …

We’ve made it so easy to use GitHub Actions to get automatic builds for your projects, done by GitHub, after every commit. You have to try this 🙂 Download this file: build.yml and place it at .github/workflows/build.yml path in your project. That is, create a subdirectory .github, then subdirectory workflows, then put the build.yml file …