Includes the following updates to Filament and Dawn to support the new version:
- CMake Configuration: Enabled OBJC/OBJCXX and set C++ standard to 20 for
Apple targets to support Dawn's Metal backend.
- WebGPU Backend API: Replaced `wgpu::ShaderModuleWGSLDescriptor` with
`wgpu::ShaderSourceWGSL`, updated compilation info callbacks to use
`wgpu::CompilationInfoRequestStatus`, and removed deprecated
`wgpu::TextureFormat::External`.
- Tint Integration (`GLSLPostProcessor.cpp`): Migrated to `ReadIR` and
`WgslFromIR`. Enabled `allow_non_uniform_derivatives` and
`disable_unreachable_code_warning` to bypass strict uniformity analysis on
UBOs, and allowlisted `gl_ClipDistance` for stereoscopic materials.
- Dawn Patches: Manually re-applied and updated
`remove-vk-macos-restriction.patch` to account for upstream refactoring in
`BackendVk.cpp`.
- AppleClang 17 RTTI Workaround: Added
`tint-texture-gather-unwrap-pointer.patch` to conditionally bypass an
AppleClang 17 optimizer bug causing RTTI dynamic cast failures in Tint
(`TINT_ASSERT(tex_ty)`).
Turns out this workaround is necessary for linux clang as well.
4637f6097b