pcbjam/scripts/build-gal-webgl-test.sh
Viktor Vaczi 37d973f064 refactor(webgl): Move WebGL GAL from test harness to KiCad source tree
Migrate WebGL GAL implementation from tests/gal-regression/wasm/webgl/
to kicad/common/gal/webgl/ and kicad/include/gal/webgl/.

This integrates the WebGL GAL properly into KiCad's build system:
- Update test Makefile to use sources from kicad/ instead of local copies
- Update build scripts for new source locations
- Add test-gal-webgl.sh script for running WebGL regression tests
- Update Docker to Emscripten 4.0.22

The WebGL GAL passes all 28 regression tests (matching baseline).

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-10 13:15:58 +01:00

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#!/bin/bash
#
# Build script for the WebGL GAL test harness (WASM)
#
# This builds a WASM module that renders GAL test scenarios using WebGL,
# allowing comparison against native OpenGL rendering.
#
# Uses a Makefile with direct em++ calls (like build-wasm-test.sh)
# to avoid emcmake Python 3.10+ requirement.
#
# Usage:
# ./scripts/build-gal-webgl-test.sh # Clean build (default)
# ./scripts/build-gal-webgl-test.sh --no-clean # Incremental build
# ./scripts/build-gal-webgl-test.sh --debug # Debug build with source maps
#
# Redirect all output to a log file (re-execs script with redirection)
source "$(dirname "$0")/common/logging.sh"
set -e
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# Source common environment (sets up Python 3.10+ for Emscripten)
QUIET=1 source "$SCRIPT_DIR/common/env.sh"
TEST_DIR="$PROJECT_ROOT/tests/gal-regression/wasm"
OUTPUT_DIR="$PROJECT_ROOT/tests/apps/gal-webgl"
echo "Building GAL WebGL Test..."
echo " Test dir: $TEST_DIR"
echo " Output dir: $OUTPUT_DIR"
echo " EMSDK_PYTHON: ${EMSDK_PYTHON:-NOT SET}"
echo " clang: $(which clang)"
# Verify em++ is available
if ! command -v em++ &> /dev/null; then
echo "ERROR: em++ not found. Please install via: brew install emscripten"
exit 1
fi
echo " Emscripten: $(em++ --version 2>&1 | head -1)"
# Parse arguments
# Default: clean build to avoid stale object file issues (header deps not tracked in old builds)
DEBUG_BUILD=0
CLEAN_BUILD=1
for arg in "$@"; do
if [ "$arg" = "--debug" ]; then
DEBUG_BUILD=1
elif [ "$arg" = "--no-clean" ]; then
CLEAN_BUILD=0
fi
done
# Build using Makefile (compiles WebGL sources directly from kicad/)
cd "$TEST_DIR"
if [ "$CLEAN_BUILD" = "1" ]; then
echo ""
echo "Cleaning..."
make clean 2>/dev/null || true
fi
# Always remove output files to ensure linker flags changes take effect
# (Makefile only tracks object file dependencies, not linker flag changes)
rm -f "$OUTPUT_DIR"/*.js "$OUTPUT_DIR"/*.wasm 2>/dev/null || true
# Generate shaders (converts GLSL 1.20 to GLSL ES 3.00)
# TODO: Eventually these should come from KiCad's build
echo ""
echo "Generating WebGL shaders..."
python3 generate_shaders.py
echo ""
echo "Building..."
if [ "$DEBUG_BUILD" = "1" ]; then
make DEBUG=1
else
make
fi
echo ""
echo "Build successful!"
echo ""
echo "Files in $OUTPUT_DIR:"
ls -lh "$OUTPUT_DIR"
echo ""
echo "To test locally:"
echo " cd $PROJECT_ROOT/tests"
echo " npx serve apps"
echo " # Open http://localhost:3000/gal-webgl/gal_webgl_test.html"