Add back CMake build config for macOS

[louwers]

This builds on #2715 with some more fixes to the CMake config for macOS.

Reinstating these CMake build files is the easiest way to get Node.js working with Metal (and probably Qt too).

[github-actions[bot]]

Bloaty Results (iOS) 🐋

Compared to main

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  [ = ]       0  [ = ]       0    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results-ios/pr-2729-compared-to-main.txt

[github-actions[bot]]

Bloaty Results 🐋

Compared to main

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  [ = ]       0  [ = ]       0    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results/pr-2729-compared-to-main.txt

Compared to d38709084a9865fe0bb8300aec70ebf8243b3d43 (legacy)

    FILE SIZE        VM SIZE    
 --------------  -------------- 
   +27% +31.0Mi  +420% +25.1Mi    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results/pr-2729-compared-to-legacy.txt

[github-actions[bot]]

Benchmark Results ⚡

Benchmark                                                     Time             CPU      Time Old      Time New       CPU Old       CPU New
------------------------------------------------------------------------------------------------------------------------------------------
OVERALL_GEOMEAN                                            -0.0116         -0.0111             0             0             0             0

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/benchmark-results/pr-2729-compared-to-main.txt

[acalcutt]

Seems like it compiles on x86_64, but the tests get this error

-[MTLTextureDescriptorInternal validateWithDevice:]:1357: failed assertion `Texture Descriptor Validation
MTLTextureDescriptor: Depth, Stencil, DepthStencil textures cannot be allocated with MTLStorageModeShared or MTLStorageModeManaged on this device.

Do you think this will only work with arm architecture?

Edit: I see that error here but it is in java code. their fix was https://github.com/openjdk/jfx-sandbox/commit/349410432b6609f90321f1fe3bf706e138579fef . Not sure it really helps here but it seems they implemented DirectBuffer

[louwers]

@acalcutt Should work, but GitHub might run some kind of emulation and not have a Metal enabled GPU.

I see this in our source code:

#if TARGET_OS_SIMULATOR
        switch (format) {
            case MTL::PixelFormatDepth16Unorm:
            case MTL::PixelFormatDepth32Float:
            case MTL::PixelFormatStencil8:
            case MTL::PixelFormatDepth24Unorm_Stencil8:
            case MTL::PixelFormatDepth32Float_Stencil8:
            case MTL::PixelFormatX32_Stencil8:
            case MTL::PixelFormatX24_Stencil8:
                // On iOS simulator, the default shared mode is invalid for depth and stencil textures.
                //  'Texture Descriptor Validation MTLTextureDescriptor: Depth, Stencil, DepthStencil
                //   textures cannot be allocated with MTLStorageModeShared on this device.
                textureDescriptor->setStorageMode(MTL::StorageMode::StorageModePrivate);
                break;
            default:
                break;
        }
#endif

On non-Apple family GPUs, the shared storage mode isn’t available for MTLTexture instances.

[louwers]

pre-commit.ci run