Advance Blender WebEngine N-015 through N-022 parity

tools/web/generate-compositor-fixture.py

@@ -0,0 +1,39 @@
+import pathlib
+import sys
+
+import bpy
+
+
+def main(output_path):
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    scene = bpy.context.scene
+    scene.name = "CompositorScene"
+    tree = bpy.data.node_groups.new("WebCompositorTree", "CompositorNodeTree")
+    scene.compositing_node_group = tree
+    tree.interface.new_socket(name="Image", in_out="OUTPUT", socket_type="NodeSocketColor")
+
+    color = tree.nodes.new("CompositorNodeRGB")
+    color.name = "WebConstantColor"
+    color.outputs["Color"].default_value = (0.125, 0.25, 0.5, 0.75)
+
+    viewer = tree.nodes.new("CompositorNodeViewer")
+    viewer.name = "WebViewer"
+    composite = tree.nodes.new("NodeGroupOutput")
+    composite.name = "WebComposite"
+    glare = tree.nodes.new("CompositorNodeGlare")
+    glare.name = "PreservedUnsupportedGlare"
+
+    tree.links.new(color.outputs["Color"], viewer.inputs["Image"])
+    tree.links.new(color.outputs["Color"], composite.inputs["Image"])
+
+    path = pathlib.Path(output_path).resolve()
+    path.parent.mkdir(parents=True, exist_ok=True)
+    bpy.ops.wm.save_as_mainfile(filepath=str(path), compress=False)
+    print(f"compositor-fixture-generated path={path} nodes={len(tree.nodes)} links={len(tree.links)}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --python generate-compositor-fixture.py -- output.blend")
+    main(arguments[0])