* Shader compilation is now cached. Subsequent loads take less than a millisecond.
* Improved game, editor and project manager startup time.
* Editor uses .godot/shader_cache to store shaders.
* Game uses user://shader_cache
* Project manager uses $config_dir/shader_cache
* Options to tweak shader caching in project settings.
* Editor path configuration moved from EditorSettings to new class, EditorPaths, so it can be available early on (before shaders are compiled).
* Reworked ShaderCompilerRD to ensure deterministic shader code creation (else shader may change and cache will be invalidated).
* Added shader compression with SMOLV: https://github.com/aras-p/smol-v
- Tweak the setting property hint to be more informative.
- Make the setting a "basic" setting so it appears when Advanced Settings
is disabled.
- Remove redundant orientation setting in the iOS export preset.
The project setting is now used (like on Android).
Projects upgrading from a previous version will have to set the
screen orientation again in the Project Settings if it wasn't set
to the default value ("landscape").
The XDG Base Directory specification does not allow using relative paths
(which broke things in Godot anyway). If a relative path is detected,
it should be ignored.
We found that this flag causes this error on PR #48812 which does not add any
fancy inline assembly:
```
/tmp/tile_set-ce236a.s: Assembler messages:
/tmp/tile_set-ce236a.s:34676: Error: selected processor does not support `bfc x0,#32,#32'
clang++: error: assembler command failed with exit code 1 (use -v to see invocation)
```
That flag is mentioned in various errors related to assembler failures on
arm64v8 with Clang from the Android NDK.
It was added in Godot in #6958 when migrating from GCC to Clang, and is indeed
referenced in the NDK's Clang migration guide:
https://android.googlesource.com/platform/ndk/+/master/docs/ClangMigration.md
> Especially for ARM and ARM64, Clang is much stricter about assembler rules
> than GCC/GAS. Use `-fno-integrated-as` if Clang reports errors in inline
> assembly or assembly files that you don't wish to modernize.
We don't get those errors nowadays so it seems the flag is no longer needed.
Add `WARN_ON_UNDEFINED_SYMBOLS=0` for the main module (which defines
`godot_js_main` as extern coming from the "side" module, i.e. the main
Godot binary).
