Traffic signal

2.0/ABeautifulGame/README.md

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+# A Beautiful Game
+
+## Screenshots
+
+![screenshot](screenshot/screenshot-babylonjs.jpg)
+
+_Real-time rendered using [Babylon Sandbox](https://sandbox.babylonjs.com/) with Poly Haven's
+[Aerodynamics Workshop HDRI](https://polyhaven.com/a/aerodynamics_workshop),
+ACES tone-mapping, and Exposure +2EV._
+
+![screenshot](screenshot/screenshot-threejs.jpg)
+
+_Real-time rendered using ThreeJS [glTF Viewer](https://gltf-viewer.donmccurdy.com/) with the
+default view settings and neutral lighting._
+
+## Description
+
+The original model was crafted for
+[a SideFX tutorial for Karma](https://www.sidefx.com/tutorials/karma-a-beautiful-game/)
+by Moeen Sayed and Mujtaba Sayed. It was publicly re-released by the
+[Academy Software Foundation](https://www.aswf.io/) during the SIGGRAPH 2022
+[ASWF Open Source Days](https://events.linuxfoundation.org/open-source-days/)
+set of presentations, which also included one presentation by Bernard Kwok and Pablo Delgado
+covering recent developments in MaterialX / glTF interoperability
+([video](https://www.youtube.com/watch?v=TQVwu7UMIgg&list=PL9dZxafYCWmzkET3PX23ahXn67usV0tDH&index=3&t=2181))
+([slides](https://www.materialx.org/assets/ASWF_OSD2022_MaterialX_OSL_Final.pdf)).
+The model geometry was first converted to GLB form by Chris Rydalch and Jonathan Stone in order to be
+[contributed to the MaterialX project](https://github.com/AcademySoftwareFoundation/MaterialX/pull/982)
+as a sample.
+
+The updated glTF conversion presented here by Ed Mackey provides full glTF PBR materials, including the
+transmission and volumetric effects applied to the tops of the Pawns using a pre-release of the
+Blender glTF I/O project. A small amount of subsurface scattering on the King and Queen have
+been skipped for this iteration as the relevant glTF extensions are still in draft form.
+Ambient Occlusion maps were recalculated and merged into glTF's typical
+occlusion-roughness-metallic map combinations.
+
+The geometry is separated into individual meshes (instanced where possible), meaning this
+version of the model could be used to create a fully interactive chess game with individually
+movable pieces.
+
+## Purpose
+
+This sample model demonstrates the power of integration between the USD / MaterialX authoring
+workflow and glTF's ability to deliver a GPU-ready final asset for interactive rendering.
+This sample is the result of a bespoke conversion intended to show the art of the possible,
+exploring changes needed to the asset as it moves from an artist's editing workflow in
+USD / MaterialX to the final delivery form in glTF. Ideally this work can serve as
+inspiration for more automated conversion tooling in the future.
+
+## License Information
+
+CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/
+Academy Software Foundation, MaterialX Project
+([ref](https://twitter.com/SheriffStone/status/1560286061854482434))  
+with additional conversion by Ed Mackey, AGI.