3D Model Viewer

3D Model Viewer renders 3D models using a custom game engine developed by Pilgrimage Games. It serves as a basic demonstration of the 3D capabilities of the proprietary engine.

All code has been written from scratch in-house following "handmade" principles, with minimal use of external libraries and other dependencies. The only exception to this is Dear ImGui for the GUI. In lieu of even the C standard library, Pilgrimage Games maintains its own internal common library.

While 3D Model Viewer is open-source, the underlying game engine and its various graphics backends, as well as internal library and platform code, remain closed-source. See Releases to download and run the application.

Features

• Physically-based rendering (PBR) with support for base color, metallic-roughness, normal, and emissive textures
• Support for non-opaque materials (via translucency sorting)
• Support for animation, including skeletal animation (via mesh skinning)
• Custom renderers for all modern PC graphics APIs (Direct3D 11, Direct3D 12, and Vulkan)
• Bindless rendering and custom texture cache (Direct3D 12/Vulkan)
• Support for arbitrary display resolutions, refresh rates, and aspect ratios
• Support for Steam Deck and other Linux-based devices via Proton
• Arcball camera (camera is rotated on a sphere around the model)
• Mouse/keyboard and gamepad controls for model selection, rotation, zoom, etc.
• Immediate-mode GUI for displaying performance metrics, controls, etc.
• Wireframe mode

Models

The included 3D models are processed from their original glTF 2.0 binary format (.glb) and packed into a single Pilgrimage Games Assets (.pga) file.

Attributions

• "Abstract Rainbow Translucent Pendant" by riach is licensed under CC BY 4.0.
• "Box Animated" by Cesium is licensed under CC BY 4.0.
• "Brainstem" by Keith Hunter is licensed under Poser End User License Agreement.
• "Corset" by Microsoft is Public Domain.
• "Damaged Helmet" by theblueturtle_ (model) and ctxwing (rebuild and conversion to glTF) is licensed under CC BY-NC 4.0 and CC BY 4.0 International respectively.
• "Fox" by PixelMannen (model), tomkranis (rigging and animation), and AsoboStudio and scurest (conversion to glTF) is licensed under CC0 1.0 Universal, CC BY 4.0 International, and CC BY 4.0 International respectively.
• "Ftm" by luyssport is licensed under CC BY-NC-SA 4.0.
• "PlayStation 1" by Lars Maes is licensed under CC BY 4.0.
• "Virtual City" by 3DRT is licensed under 3DRT License.
• "Water Bottle" by Microsoft is Public Domain.