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slimbuck/webgpu_metal_capture.txt

Created May 13, 2024 08:47
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Capturing WebGPU metal trace on MacOS
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webgpu_metal_capture.txt
1) Clone and build WebKit
git clone https://github.com/WebKit/WebKit.git WebKit
cd WebKit
Tools/Scripts/build-webkit -cmakeargs="-DENABLE_WEBGPU_BY_DEFAULT=1" --debug
2) Run your app
__XPC_METAL_CAPTURE_ENABLED=1 Tools/Scripts/run-minibrowser --debug --url http://localhost:5000/index.html#/loaders/gsplat
3) While app is running invoke WebGPU capture from a new terminal
notifyutil -p com.apple.WebKit.WebGPU.CaptureFrame
4) File is written to HD, WebKit terminal displays the path.
5) Load the file into xcode (file open) and profit.
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