129 lines
3.3 KiB
Bash
Executable File
129 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eu
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script_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
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cd "$script_path/.."
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./scripts/setup_web.sh
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CRATE_NAME="egui_demo_app"
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FEATURES="web_app"
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OPEN=false
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OPTIMIZE=false
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BUILD=debug
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BUILD_FLAGS=""
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WGPU=false
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WASM_OPT_FLAGS="-O2 --fast-math"
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while test $# -gt 0; do
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case "$1" in
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-h|--help)
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echo "build_demo_web.sh [--release] [--wgpu] [--open]"
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echo ""
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echo " -g: Keep debug symbols even with --release."
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echo " These are useful profiling and size trimming."
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echo ""
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echo " --open: Open the result in a browser."
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echo ""
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echo " --release: Build with --release, and then run wasm-opt."
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echo " NOTE: --release also removes debug symbols, unless you also use -g."
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echo ""
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echo " --wgpu: Build a binary using wgpu instead of glow/webgl."
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echo " The resulting binary will automatically use WebGPU if available and"
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echo " fall back to a WebGL emulation layer otherwise."
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exit 0
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;;
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-g)
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shift
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WASM_OPT_FLAGS="${WASM_OPT_FLAGS} -g"
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;;
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--open)
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shift
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OPEN=true
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;;
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--release)
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shift
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OPTIMIZE=true
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BUILD="release"
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BUILD_FLAGS="--release"
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;;
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--wgpu)
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shift
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WGPU=true
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;;
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*)
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echo "Unknown option: $1"
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exit 1
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;;
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esac
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done
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OUT_FILE_NAME="egui_demo_app"
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if [[ "${WGPU}" == true ]]; then
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FEATURES="${FEATURES},wgpu"
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else
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FEATURES="${FEATURES},glow"
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fi
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FINAL_WASM_PATH=web_demo/${OUT_FILE_NAME}_bg.wasm
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# Clear output from old stuff:
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rm -f "${FINAL_WASM_PATH}"
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echo "Building rust…"
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(cd crates/$CRATE_NAME &&
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cargo build \
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${BUILD_FLAGS} \
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--quiet \
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--lib \
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--target wasm32-unknown-unknown \
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--no-default-features \
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--features ${FEATURES}
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)
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# Get the output directory (in the workspace it is in another location)
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# TARGET=`cargo metadata --format-version=1 | jq --raw-output .target_directory`
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TARGET="target"
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echo "Generating JS bindings for wasm…"
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TARGET_NAME="${CRATE_NAME}.wasm"
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WASM_PATH="${TARGET}/wasm32-unknown-unknown/$BUILD/$TARGET_NAME"
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wasm-bindgen "${WASM_PATH}" --out-dir web_demo --out-name ${OUT_FILE_NAME} --no-modules --no-typescript
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# if this fails with "error: cannot import from modules (`env`) with `--no-modules`", you can use:
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# wasm2wat target/wasm32-unknown-unknown/release/egui_demo_app.wasm | rg env
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# wasm2wat target/wasm32-unknown-unknown/release/egui_demo_app.wasm | rg "call .now\b" -B 20 # What calls `$now` (often a culprit)
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# Or use https://rustwasm.github.io/twiggy/usage/command-line-interface/paths.html#twiggy-paths
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# to get wasm-strip: apt/brew/dnf install wabt
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# wasm-strip ${FINAL_WASM_PATH}
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if [[ "${OPTIMIZE}" = true ]]; then
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echo "Optimizing wasm…"
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# to get wasm-opt: apt/brew/dnf install binaryen
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wasm-opt "${FINAL_WASM_PATH}" $WASM_OPT_FLAGS -o "${FINAL_WASM_PATH}"
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fi
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echo "Finished ${FINAL_WASM_PATH}"
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if [[ "${OPEN}" == true ]]; then
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if [[ "$OSTYPE" == "linux-gnu"* ]]; then
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# Linux, ex: Fedora
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xdg-open http://localhost:8765/index.html
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elif [[ "$OSTYPE" == "msys" ]]; then
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# Windows
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start http://localhost:8765/index.html
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else
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# Darwin/MacOS, or something else
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open http://localhost:8765/index.html
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fi
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fi
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