Add Chromium-only Blender WebEngine parity work

blender-5.2.0/scripts/site/sitecustomize.py

@@ -0,0 +1,63 @@
+# SPDX-FileCopyrightText: 2022-2023 Blender Authors
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Make shared libraries needed by modules available in standalone Python binary.
+
+import sys
+import os
+
+# Path to Blender shared libraries.
+shared_lib_dirname = "blender.shared" if sys.platform == "win32" else "lib"
+
+if os.path.basename(__file__) == "bpy_site_customize.py":
+    # Blender as Python Module.
+    is_python = True
+    shared_lib_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..", ".."))
+    # On Windows no subdirectory is used.
+    if sys.platform != "win32":
+        shared_lib_dir = os.path.join(shared_lib_dir, shared_lib_dirname)
+else:
+    exe_dir, exe_file = os.path.split(sys.executable)
+    is_python = exe_file.startswith("python")
+    if is_python:
+        # Python executable bundled with Blender.
+        shared_lib_dir = os.path.abspath(os.path.join(exe_dir, "..", "..", "..", shared_lib_dirname))
+    else:
+        # Blender executable.
+        shared_lib_dir = os.path.abspath(os.path.join(exe_dir, shared_lib_dirname))
+
+if sys.platform == "win32":
+    # Directory for extensions to find DLLs.
+    if is_python:
+        os.add_dll_directory(shared_lib_dir)
+
+    # Directory for USD extension to find DLLs.
+    import_paths = os.getenv("PXR_USD_WINDOWS_DLL_PATH")
+    if import_paths is None:
+        os.environ["PXR_USD_WINDOWS_DLL_PATH"] = shared_lib_dir
+
+    # OIIO will by default add all paths from the path variable to add_dll_directory
+    # problem there is that those folders will be searched before ours and versions of
+    # some DLL files may be found that are not blenders and may not even be the right version
+    # causing compatibility issues.
+    os.environ["OIIO_LOAD_DLLS_FROM_PATH"] = "0"
+
+# MaterialX libraries, append if already specified.
+materialx_libs_dir = os.path.abspath(os.path.join(shared_lib_dir, "materialx", "libraries"))
+materialx_libs_env = os.getenv("MATERIALX_SEARCH_PATH")
+if materialx_libs_env is None:
+    os.environ["MATERIALX_SEARCH_PATH"] = materialx_libs_dir
+else:
+    os.environ["MATERIALX_SEARCH_PATH"] = materialx_libs_env + os.pathsep + materialx_libs_dir
+
+materialx_libs_env = os.getenv("PXR_MTLX_STDLIB_SEARCH_PATHS")
+if materialx_libs_env is None:
+    os.environ["PXR_MTLX_STDLIB_SEARCH_PATHS"] = materialx_libs_dir
+else:
+    os.environ["PXR_MTLX_STDLIB_SEARCH_PATHS"] = materialx_libs_env + os.pathsep + materialx_libs_dir
+
+
+def register():
+    # To make this work as a startup script for Blender as a Python module.
+    pass