Implement percentage-closer soft shadows (PCSS). #48340

Workflow file for this run

	name: CI

	on:
	merge_group:
	pull_request:
	push:
	branches:
	- main
	- release-*

	env:
	CARGO_TERM_COLOR: always
	# If nightly is breaking CI, modify this variable to target a specific nightly version.
	NIGHTLY_TOOLCHAIN: nightly

	concurrency:
	group: ${{github.workflow}}-${{github.ref}}
	cancel-in-progress: ${{github.event_name == 'pull_request'}}

	jobs:
	build:
	strategy:
	matrix:
	os: [windows-latest, ubuntu-latest, macos-latest]
	runs-on: ${{ matrix.os }}
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ${{ runner.os }}-cargo-build-stable-${{ hashFiles('**/Cargo.toml') }}
	- uses: dtolnay/rust-toolchain@stable
	- name: Install Linux dependencies
	uses: ./.github/actions/install-linux-deps
	- name: Build & run tests
	# See tools/ci/src/main.rs for the commands this runs
	run: cargo run -p ci -- test
	env:
	CARGO_INCREMENTAL: 0
	RUSTFLAGS: "-C debuginfo=0 -D warnings"

	ci:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ${{ runner.os }}-cargo-ci-${{ hashFiles('**/Cargo.toml') }}
	- uses: dtolnay/rust-toolchain@stable
	with:
	components: rustfmt, clippy
	- name: Install Linux dependencies
	uses: ./.github/actions/install-linux-deps
	with:
	wayland: true
	xkb: true
	- name: CI job
	# See tools/ci/src/main.rs for the commands this runs
	run: cargo run -p ci -- lints

	miri:
	# Explicity use macOS 14 to take advantage of M1 chip.
	runs-on: macos-14
	timeout-minutes: 60
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ${{ runner.os }}-cargo-miri-${{ hashFiles('**/Cargo.toml') }}
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.NIGHTLY_TOOLCHAIN }}
	components: miri
	- name: CI job
	# To run the tests one item at a time for troubleshooting, use
	# cargo --quiet test --lib -- --list \| sed 's/: test$//' \| MIRIFLAGS="-Zmiri-disable-isolation -Zmiri-permissive-provenance -Zmiri-disable-weak-memory-emulation" xargs -n1 cargo miri test -p bevy_ecs --lib -- --exact
	run: cargo miri test -p bevy_ecs
	env:
	# -Zrandomize-layout makes sure we dont rely on the layout of anything that might change
	RUSTFLAGS: -Zrandomize-layout
	# https://github.com/rust-lang/miri#miri--z-flags-and-environment-variables
	# -Zmiri-disable-isolation is needed because our executor uses `fastrand` which accesses system time.
	# -Zmiri-permissive-provenance disables warnings against int2ptr casts (since those are used by once_cell)
	# -Zmiri-ignore-leaks is necessary because a bunch of tests don't join all threads before finishing.
	MIRIFLAGS: -Zmiri-ignore-leaks -Zmiri-disable-isolation -Zmiri-permissive-provenance

	check-compiles:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	needs: ci
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	crates/bevy_ecs_compile_fail_tests/target/
	crates/bevy_reflect_compile_fail_tests/target/
	key: ${{ runner.os }}-cargo-check-compiles-${{ hashFiles('**/Cargo.toml') }}
	- uses: dtolnay/rust-toolchain@stable
	with:
	toolchain: stable
	- name: Install Linux dependencies
	uses: ./.github/actions/install-linux-deps
	- name: Check Compile
	# See tools/ci/src/main.rs for the commands this runs
	run: cargo run -p ci -- compile

	build-wasm:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	needs: build
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ubuntu-assets-cargo-build-wasm-stable-${{ hashFiles('**/Cargo.toml') }}
	- uses: dtolnay/rust-toolchain@stable
	with:
	target: wasm32-unknown-unknown
	- name: Check wasm
	run: cargo check --target wasm32-unknown-unknown

	build-wasm-atomics:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	needs: build
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ubuntu-assets-cargo-build-wasm-nightly-${{ hashFiles('**/Cargo.toml') }}
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.NIGHTLY_TOOLCHAIN }}
	targets: wasm32-unknown-unknown
	components: rust-src
	- name: Check wasm
	run: cargo check --target wasm32-unknown-unknown -Z build-std=std,panic_abort
	env:
	RUSTFLAGS: "-C target-feature=+atomics,+bulk-memory"

	markdownlint:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	needs: check-missing-features-in-docs
	if: always()
	steps:
	- uses: actions/checkout@v4
	with:
	# Full git history is needed to get a proper list of changed files within `super-linter`
	fetch-depth: 0
	- name: Run Markdown Lint
	uses: docker://ghcr.io/github/super-linter:slim-v4
	env:
	MULTI_STATUS: false
	VALIDATE_ALL_CODEBASE: false
	VALIDATE_MARKDOWN: true
	DEFAULT_BRANCH: main

	toml:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@stable
	- name: Install taplo
	run: cargo install taplo-cli --locked
	- name: Run Taplo
	id: taplo
	run: taplo fmt --check --diff
	- name: Taplo info
	if: failure()
	run: \|
	echo 'To fix toml fmt, please run `taplo fmt`'
	echo 'To check for a diff, run `taplo fmt --check --diff'
	echo 'You can find taplo here: https://taplo.tamasfe.dev/'
	echo 'Or if you use VSCode, use the `Even Better Toml` extension with 2 spaces'
	echo 'You can find the extension here: https://marketplace.visualstudio.com/items?itemName=tamasfe.even-better-toml'

	typos:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	- name: Check for typos
	uses: crate-ci/[email protected]
	- name: Typos info
	if: failure()
	run: \|
	echo 'To fix typos, please run `typos -w`'
	echo 'To check for a diff, run `typos`'
	echo 'You can find typos here: https://crates.io/crates/typos'
	echo 'if you use VSCode, you can also install `Typos Spell Checker'
	echo 'You can find the extension here: https://marketplace.visualstudio.com/items?itemName=tekumara.typos-vscode'


	run-examples-macos-metal:
	# Explicity use macOS 14 to take advantage of M1 chip.
	runs-on: macos-14
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@stable
	- name: Disable audio
	# Disable audio through a patch. on github m1 runners, audio timeouts after 15 minutes
	run: git apply --ignore-whitespace tools/example-showcase/disable-audio.patch
	- name: Build bevy
	# this uses the same command as when running the example to ensure build is reused
	run: \|
	TRACE_CHROME=trace-alien_cake_addict.json CI_TESTING_CONFIG=.github/example-run/alien_cake_addict.ron cargo build --example alien_cake_addict --features "bevy_ci_testing,trace,trace_chrome"
	- name: Run examples
	run: \|
	for example in .github/example-run/*.ron; do
	example_name=`basename $example .ron`
	echo -n $example_name > last_example_run
	echo "running $example_name - "`date`
	time TRACE_CHROME=trace-$example_name.json CI_TESTING_CONFIG=$example cargo run --example $example_name --features "bevy_ci_testing,trace,trace_chrome"
	sleep 10
	if [ `find ./ -maxdepth 1 -name 'screenshot-*.png' -print -quit` ]; then
	mkdir screenshots-$example_name
	mv screenshot-*.png screenshots-$example_name/
	fi
	done
	mkdir traces && mv trace*.json traces/
	mkdir screenshots && mv screenshots-* screenshots/
	- name: save traces
	uses: actions/upload-artifact@v4
	with:
	name: example-traces-macos
	path: traces
	- name: save screenshots
	uses: actions/upload-artifact@v4
	with:
	name: screenshots-macos
	path: screenshots
	- uses: actions/upload-artifact@v4
	if: ${{ failure() && github.event_name == 'pull_request' }}
	with:
	name: example-run-macos
	path: example-run/

	check-doc:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ${{ runner.os }}-check-doc-${{ hashFiles('**/Cargo.toml') }}
	- uses: dtolnay/rust-toolchain@stable
	- name: Install Linux dependencies
	uses: ./.github/actions/install-linux-deps
	with:
	wayland: true
	xkb: true
	- name: Build and check doc
	# See tools/ci/src/main.rs for the commands this runs
	run: cargo run -p ci -- doc
	env:
	CARGO_INCREMENTAL: 0
	RUSTFLAGS: "-C debuginfo=0"
	# This currently report a lot of false positives
	# Enable it again once it's fixed - https://github.com/bevyengine/bevy/issues/1983
	# - name: Installs cargo-deadlinks
	# run: cargo install --force cargo-deadlinks
	# - name: Checks dead links
	# run: cargo deadlinks --dir target/doc/bevy
	# continue-on-error: true

	check-missing-examples-in-docs:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	- name: check for missing metadata
	id: missing-metadata
	run: cargo run -p build-templated-pages -- check-missing examples
	- name: check for missing update
	run: cargo run -p build-templated-pages -- update examples
	- name: Check for modified files
	id: missing-update
	run: \|
	echo "if this step fails, run the following command and commit the changed file on your PR."
	echo " > cargo run -p build-templated-pages -- update examples"
	git diff --quiet HEAD --
	- name: Save PR number
	if: ${{ failure() && github.event_name == 'pull_request' }}
	run: \|
	mkdir -p ./missing-examples
	echo ${{ github.event.number }} > ./missing-examples/NR
	- name: log failed task - missing metadata
	if: ${{ failure() && github.event_name == 'pull_request' && steps.missing-metadata.conclusion == 'failure' }}
	run: touch ./missing-examples/missing-metadata
	- name: log failed task - missing update
	if: ${{ failure() && github.event_name == 'pull_request' && steps.missing-update.conclusion == 'failure' }}
	run: touch ./missing-examples/missing-update
	- uses: actions/upload-artifact@v4
	if: ${{ failure() && github.event_name == 'pull_request' }}
	with:
	name: missing-examples
	path: missing-examples/

	check-missing-features-in-docs:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	needs: check-missing-examples-in-docs
	steps:
	- uses: actions/checkout@v4
	- name: check for missing features
	id: missing-features
	run: cargo run -p build-templated-pages -- check-missing features
	- name: check for missing update
	run: cargo run -p build-templated-pages -- update features
	- name: Check for modified files
	id: missing-update
	run: \|
	echo "if this step fails, run the following command and commit the changed file on your PR."
	echo " > cargo run -p build-templated-pages -- update features"
	git diff --quiet HEAD --
	- name: Save PR number
	if: ${{ failure() && github.event_name == 'pull_request' }}
	run: \|
	mkdir -p ./missing-features
	echo ${{ github.event.number }} > ./missing-features/NR
	- name: log failed task - missing features
	if: ${{ failure() && github.event_name == 'pull_request' && steps.missing-features.conclusion == 'failure' }}
	run: touch ./missing-features/missing-features
	- name: log failed task - missing update
	if: ${{ failure() && github.event_name == 'pull_request' && steps.missing-update.conclusion == 'failure' }}
	run: touch ./missing-features/missing-update
	- uses: actions/upload-artifact@v4
	if: ${{ failure() && github.event_name == 'pull_request' }}
	with:
	name: missing-features
	path: missing-features/

	msrv:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	needs: build
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ${{ runner.os }}-cargo-msrv-${{ hashFiles('**/Cargo.toml') }}
	- name: get MSRV
	id: msrv
	run: \|
	msrv=`cargo metadata --no-deps --format-version 1 \| jq --raw-output '.packages[] \| select(.name=="bevy") \| .rust_version'`
	echo "msrv=$msrv" >> $GITHUB_OUTPUT
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ steps.msrv.outputs.msrv }}
	- name: Install Linux dependencies
	uses: ./.github/actions/install-linux-deps
	- name: Run cargo check
	id: check
	run: cargo check
	- name: Save PR number
	if: ${{ failure() && github.event_name == 'pull_request' && steps.check.conclusion == 'failure' }}
	run: \|
	mkdir -p ./msrv
	echo ${{ github.event.number }} > ./msrv/NR
	- uses: actions/upload-artifact@v4
	if: ${{ failure() && github.event_name == 'pull_request' && steps.check.conclusion == 'failure' }}
	with:
	name: msrv
	path: msrv/

	check-bevy-internal-imports:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	steps:
	- uses: actions/checkout@v4
	- name: Check for bevy_internal imports
	shell: bash
	run: \|
	errors=""
	for file in $(find examples tests -name '*.rs'); do
	if grep -q "use bevy_internal" "$file"; then
	errors+="ERROR: Detected 'use bevy_internal' in $file\n"
	fi
	done
	if [ -n "$errors" ]; then
	echo -e "$errors"
	echo " Avoid importing bevy_internal, it should not be used directly"
	echo " Fix the issue by replacing 'bevy_internal' with 'bevy'"
	echo " Example: 'use bevy::sprite::MaterialMesh2dBundle;' instead of 'bevy_internal::sprite::MaterialMesh2dBundle;'"
	exit 1
	fi

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Implement percentage-closer soft shadows (PCSS). #48340

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Implement percentage-closer soft shadows (PCSS). #48340

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