default to Dawn GPUInterface implementation #463

	name: CI
	on:
	- push
	- pull_request
	jobs:
	x86_64-linux:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	submodules: 'true'
	- name: Setup Zig
	run: \|
	sudo apt install xz-utils
	sudo sh -c 'wget -c https://pkg.machengine.org/zig/zig-linux-x86_64-0.12.0-dev.3180+83e578a18.tar.xz -O - \| tar -xJ --strip-components=1 -C /usr/local/bin'
	- name: build
	run: zig build
	# - name: test
	# run: zig build test
	x86_64-windows:
	runs-on: windows-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	submodules: 'true'
	- name: Setup Zig
	run: \|
	$ProgressPreference = 'SilentlyContinue'
	Invoke-WebRequest -Uri "https://pkg.machengine.org/zig/zig-windows-x86_64-0.12.0-dev.3180+83e578a18.zip" -OutFile "C:\zig.zip"
	cd C:\
	7z x zig.zip
	Add-Content $env:GITHUB_PATH "C:\zig-windows-x86_64-0.12.0-dev.3180+83e578a18\"
	- name: build
	run: zig build
	# - name: test
	# run: zig build test
	x86_64-macos:
	runs-on: macos-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	submodules: 'true'
	- name: Setup Zig
	run: \|
	brew install xz
	sudo sh -c 'wget -c https://pkg.machengine.org/zig/zig-macos-x86_64-0.12.0-dev.3180+83e578a18.tar.xz -O - \| tar -xJ --strip-components=1 -C /usr/local/bin'
	- name: build
	run: zig build
	# - name: test
	# run: zig build test

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