The Parallax 3D Portal Card System renders cards containing volumetric 3D models with realistic perspective parallax as if the card is a window to a pocket dimension or a portal.

Demo Video: https://youtu.be/mWA5QoWifNA

Key pillars of this architecture:

• Zero SceneCapture2D Overhead — Unlike traditional render-to-texture setups that re-render the entire 3D scene twice per frame, this system renders 3D models directly in the main Base Pass.

• Pocket Dimension Sky Spheres — The background behind the 3D card subject is an inverted environment sphere with panoramic textures that uses the exact same portal clipping parameters, making both the object and its background feel locked in the same virtual pocket universe.

• 5:7 Window Aspect Ratio — Matches standard trading card dimensions (e.g., 2.5" × 3.5"). Fully adjustable inside the Material Function for custom circular, hexagonal, or landscape card openings.

• Dynamic PBR Canvas Text — Generates dynamic titles, costs, and descriptions via CanvasRenderTarget2D baked into a Masked PBR material. Text catches real-world specular highlights and reflections without blurry 3D widget component artifacts.

• Directional & Occlusion Guards — Strict dot-product clipping eliminates infinite-line artifacts, preventing objects from leaking outside the card when viewed from steep side angles or behind.