refactor: rendering

[craftablescience]

• [x] Pull all direct rendering code out of the core engine
  • [x] Textures
  • [x] Shaders
  • [x] UBOs
  • [x] Meshes
  • [x] Framebuffers
  • [x] Windows
• [x] Backends
  • [x] OpenGL 4.1 (all)
  • [x] OpenGL 4.3 (non-Mac)

Bonus Features:

• Add helper func to get path of file in config directory
• Macro-ize extern'd log channels
• Un-static global variables that shouldn't be static, that was me not understanding what static means in that context for the nth time
• Support single inheritance in json (de)serialization
• Pass extra arguments in log calls directly to fmt::format
• Improve copying the resource folder in cmake
• Move to SDL2 from glfw
• Rewrite input system again, but still needs a full overhaul
• Add option to build with link-time optimization, by default disabled in debug and enabled in release
• Ignore annoying GLM warnings
• Fix broken AngelScript semi-auto function binding (functions with no parameters, pointers to primitives) and add tests
• Templatize AngelScript function calling from C++ (partial implementation, doesn't yet support pointers/references/non-primitives) and add tests
• Fix check for if std::source_location is supported
• Clean up root CMakeLists.txt file

[ashifolfi]

Do you think we could add Metal (macOS' native graphics API) on this list? Apple iirc is aiming to deprecate OpenGL/already has deprecated OpenGL and it would be better to use a modern native Mac library for graphics instead of relying on Apple not ditching OpenGL in the future.

there are 2 ways this could be done

• MoltenVK (Vulkan to Metal translation layer) + Vulkan backend
• Standalone Metal backend

ImGui does have a Metal backend so we wouldn't need to worry about that part

[craftablescience]

Either Metal or MoltenVK would be cool to have

[craftablescience]

Reviewed myself, will merge when checks pass