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Modernize gpu.cpp and add browser WebGPU support #351

	name: gpu.cpp

	on:
	push:
	branches: [main]
	pull_request:
	workflow_dispatch:

	jobs:
	test:
	strategy:
	matrix:
	os: [macos-latest, ubuntu-latest]
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v4
	- if: runner.os == 'Linux'
	run: \|
	sudo apt-get update
	sudo apt-get install -y libvulkan1 mesa-vulkan-drivers ninja-build
	- run: python3 -m pip install numpy
	- run: tools/build_dawn.sh
	- run: ./test

	browser-build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/checkout@v4
	with:
	repository: emscripten-core/emsdk
	path: emsdk
	fetch-depth: 1
	- run: \|
	sudo apt-get update
	sudo apt-get install -y ninja-build
	- run: ./test --build-web
	env:
	GPUCPP_EMSDK_ROOT: ${{ github.workspace }}/emsdk