Add Web/WASM Support

.github/actions/compile_gdextension/action.yml

@@ -80,7 +80,7 @@ runs:
         echo "::endgroup::"
 
     - name: Prepare artifact Unix
-      if: runner.os != 'Windows' && inputs.platform != 'android'
+      if: runner.os != 'Windows' && inputs.platform != 'android' && inputs.platform != 'javascript'
       shell: bash
       run: |
         if [ "$RUNNER_OS" == "macOS" ]; then

.github/workflows/gdextension_build.yml

@@ -143,13 +143,56 @@ jobs:
 
   # ============================================
 
+  web-gdextension:
+    name: 🕸 Web
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [wasm32]
+        target: [template_debug, template_release]
+
+    env:
+      EM_VERSION: 3.1.46
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          lfs: true
+          submodules: recursive
+
+      - uses: mymindstorm/setup-emsdk@v11
+        with:
+          version: ${{env.EM_VERSION}}
+
+      - shell: bash
+        run: |
+          cd godot-cpp
+          git apply --ignore-space-change --ignore-whitespace ../patches/fixed_javascript_build.patch
+          cd ..
+
+      - name: Compile GDExtension
+        uses: ./.github/actions/compile_gdextension
+        with:
+          platform: javascript
+          target: ${{matrix.target}}
+          arch: ${{matrix.arch}}
+          output_libs_path: ${{env.OUTPUT_LIBS_PATH}}
+          artifact: javascript
+          additional: lto=yes
+
+  # ============================================
+
   collect-gdextension:
     needs:
       [
         windows-gdextension,
         linux-gdextension,
         macos-gdextension,
         android-gdextension,
+        web-gdextension,
       ]
     name: 📦 Collect GDExtension binaries
     runs-on: ubuntu-latest

addons/debug_draw_3d/debug_draw_3d.gdextension

@@ -11,6 +11,8 @@ macos = { }
 windows.x86_64 = { }
 linux.x86_64 = { }
 
+web.wasm32 = {}
+
 android.arm32 = { }
 android.arm64 = { }
 android.x86_32 = { }
@@ -20,17 +22,32 @@ macos.template_release = { }
 windows.template_release.x86_64 = { }
 linux.template_release.x86_64 = { }
 
+web.template_release.wasm32 = {}
+
 android.template_release.arm32 = { }
 android.template_release.arm64 = { }
 android.template_release.x86_32 = { }
 android.template_release.x86_64 = { }
 
+macos.template_release.forced_dd3d = { }
+windows.template_release.x86_64.forced_dd3d = { }
+linux.template_release.x86_64.forced_dd3d = { }
+
+web.template_release.wasm32.forced_dd3d = {}
+
+android.template_release.arm32.forced_dd3d = { }
+android.template_release.arm64.forced_dd3d = { }
+android.template_release.x86_32.forced_dd3d = { }
+android.template_release.x86_64.forced_dd3d = { }
+
 [libraries]
 
 macos = "libs/libdd3d.macos.editor.universal.dylib"
 windows.x86_64 = "libs/libdd3d.windows.editor.x86_64.dll"
 linux.x86_64 = "libs/libdd3d.linux.editor.x86_64.so"
 
+web.wasm32 = "libs/libdd3d.javascript.template_debug.wasm32.wasm"
+
 android.arm32 = "libs/libdd3d.android.template_debug.arm32.so"
 android.arm64 = "libs/libdd3d.android.template_debug.arm64.so"
 android.x86_32 = "libs/libdd3d.android.template_debug.x86_32.so"
@@ -40,6 +57,8 @@ macos.template_release = "libs/libdd3d.macos.template_release.universal.dylib"
 windows.template_release.x86_64 = "libs/libdd3d.windows.template_release.x86_64.dll"
 linux.template_release.x86_64 = "libs/libdd3d.linux.template_release.x86_64.so"
 
+web.template_release.wasm32 = "libs/libdd3d.javascript.template_release.wasm32.wasm"
+
 android.template_release.arm32 = "libs/libdd3d.android.template_release.arm32.so"
 android.template_release.arm64 = "libs/libdd3d.android.template_release.arm64.so"
 android.template_release.x86_32 = "libs/libdd3d.android.template_release.x86_32.so"
@@ -49,6 +68,8 @@ macos.template_release.forced_dd3d = "libs/libdd3d.macos.template_release.univer
 windows.template_release.x86_64.forced_dd3d = "libs/libdd3d.windows.template_release.x86_64.enabled.dll"
 linux.template_release.x86_64.forced_dd3d = "libs/libdd3d.linux.template_release.x86_64.enabled.so"
 
+web.template_release.wasm32.forced_dd3d = "libs/libdd3d.javascript.template_release.wasm32.enabled.wasm"
+
 android.template_release.arm32.forced_dd3d = "libs/libdd3d.android.template_release.arm32.enabled.so"
 android.template_release.arm64.forced_dd3d = "libs/libdd3d.android.template_release.arm64.enabled.so"
 android.template_release.x86_32.forced_dd3d = "libs/libdd3d.android.template_release.x86_32.enabled.so"

patches/fixed_javascript_build.patch

@@ -0,0 +1,51 @@
+diff --git a/tools/javascript.py b/tools/javascript.py
+index 42c601d..8fcb921 100644
+--- a/tools/javascript.py
++++ b/tools/javascript.py
+@@ -1,18 +1,14 @@
+ import os
+-
++from SCons.Util import WhereIs
+
+ def exists(env):
+-    return "EM_CONFIG" in os.environ
+-
++    return WhereIs("emcc") is not None
+
+ def generate(env):
+     if env["arch"] not in ("wasm32"):
+         print("Only wasm32 supported on web. Exiting.")
+         Exit()
+
+-    if "EM_CONFIG" in os.environ:
+-        env["ENV"] = os.environ
+-
+     env["CC"] = "emcc"
+     env["CXX"] = "em++"
+     env["AR"] = "emar"
+@@ -26,6 +22,13 @@ def generate(env):
+     env["ARCOM_POSIX"] = env["ARCOM"].replace("$TARGET", "$TARGET.posix").replace("$SOURCES", "$SOURCES.posix")
+     env["ARCOM"] = "${TEMPFILE(ARCOM_POSIX)}"
+
++    # Thread support (via SharedArrayBuffer).
++    env.Append(CPPDEFINES=["PTHREAD_NO_RENAME"])
++    env.Append(CCFLAGS=["-s", "USE_PTHREADS=1"])
++    env.Append(LINKFLAGS=["-s", "USE_PTHREADS=1"])
++    env.Append(LINKFLAGS=["-s", "PTHREAD_POOL_SIZE=8"])
++    env.Append(LINKFLAGS=["-s", "WASM_MEM_MAX=2048MB"])
++
+     # All intermediate files are just LLVM bitcode.
+     env["OBJPREFIX"] = ""
+     env["OBJSUFFIX"] = ".bc"
+@@ -39,9 +42,9 @@ def generate(env):
+     env.Replace(SHLINKFLAGS="$LINKFLAGS")
+     env.Replace(SHLINKFLAGS="$LINKFLAGS")
+
+-    if env["target"] == "debug":
++    if env["target"] in ["editor", "template_debug"]:
+         env.Append(CCFLAGS=["-O0", "-g"])
+-    elif env["target"] == "release":
++    elif env["target"] == "template_release":
+         env.Append(CCFLAGS=["-O3"])
+
+     env.Append(CPPDEFINES=["WEB_ENABLED", "UNIX_ENABLED"])