workshop rework

tools/smoke_renderer.py

@@ -0,0 +1,41 @@
+"""Verify custom settings, preset overrides and PNG dimensions inside UE."""
+import struct
+
+import unreal
+
+from ue_workshop import Renderer, render
+from ue_workshop.paths import PROJECT
+
+for kwargs in ({"width": 0}, {"height": -1}, {"samples": 0}, {"warmup": -1}, {"width": 1.5}, {"samples": True}):
+    try:
+        Renderer(**kwargs)
+    except ValueError:
+        pass
+    else:
+        raise AssertionError(f"Accepted invalid settings: {kwargs}")
+preset = Renderer.from_preset("final", width=800)
+assert (preset.width, preset.height, preset.samples, preset.warmup) == (800, 720, 4, 32)
+code = (PROJECT / "exercises/my_shot.py").read_text(encoding="utf-8")
+code = code.replace('Scene("MyShot")', 'Scene("RendererSmoke")')
+code = code.replace('materials.color("Character"', 'materials.color("RendererSmokeCharacter"')
+code = code.replace('materials.color("Floor"', 'materials.color("RendererSmokeFloor"')
+namespace = {"__name__": "__main__"}
+exec(compile(code.replace("RENDER = True", "RENDER = False"), "my_shot.py", "exec"), namespace)
+renderer = Renderer(width=320, height=180, samples=2, warmup=0)
+output = renderer.render(namespace["shot"], single_frame=24)
+config = render._active["queue"].get_jobs()[0].get_configuration()
+aa = config.find_setting_by_class(unreal.MoviePipelineAntiAliasingSetting)
+assert aa.spatial_sample_count == 2
+assert aa.engine_warm_up_count == 0
+
+
+def verify(executor, success):
+    if not success:
+        return
+    frames = list((output / "frames").glob("*.png"))
+    assert len(frames) == 1
+    assert struct.unpack(">II", frames[0].read_bytes()[16:24]) == (320, 180)
+    unreal.log("[Workshop] Custom renderer: PNG dimensions 320x180 verified.")
+
+
+render._active["executor"].on_executor_finished_delegate.add_callable_unique(verify)