Grab-bag showcase

Small renders from the McAi experiments

Eight outputs pulled from four throwaway render demos: a wireframe teapot turning under a gyroscope of coloured lights, a nebula star field, a Cornell box, a walkable 4-panel scene, and physics rooms - each traced in pure C# on the locked OnlyCSharp 1.7 ray tracer, no game engine and no external assets.

8 renders 4 source demos 394 px widest frame ~2 min total render time

Wireframe Utah teapot lit by three orbiting coloured lights, shown from four camera angles

Teapot gyroscope turntable

A wireframe Utah teapot whose wires cast real striped shadows over a tiny lit stage inside the cage, while a gyroscope of three lights - campfire, office fluorescent, reading lamp - orbits outside. Four cameras (top / two sides / third-person) composited 2x2 to prove the shadows line up.

teapot8 - 394x306 - 14-frame loop

Glowing coloured orbs in a dark void, a nebula-like scene

Nebula star field

Six emissive orbs - fiery orange, deep blue, violet, cyan, amber, pink - haloed around a dark central mass, with dust occluders. A path-traced study of many coloured lights in a near-black void.

renders - 480x320 - 50 spp

Three matte spheres on a ground plane under warm and cool studio lights

Three-sphere studio

Crimson, gold and teal spheres on a ground plane, lit by a warm key light and a cool blue rim. The classic first test any tracer earns its keep on.

renders - 480x320 - 40 spp

Cornell box

The reference scene for global illumination: red and green side walls bleed colour onto two neutral spheres under a single ceiling light. Soft indirect bounce, no fakery.

renders - 380x380 - 60 spp

Four-panel walkthrough of a small lit scene: top-down, two sides, follow camera

Walkable 4-panel scene

A real-time ray-caster (one primary ray plus a shadow ray per light) doing a scripted auto-walk. As the carried light moves, hard cast shadows swing across all four camera panels at once.

game11 - 300x224 - 44-frame walk

Isometric dungeon-style room with grass, water and crates

Isometric room

A Diablo-style isometric scene built from the physics renderer's tile kit - grass, a water pool and stacked crates - to show the 1.7 graphics stack composing a small game room.

physics_renderer - 320x200

A ball dropping into water, splashing, simulated as a fluid

Stable-fluids splash

A ball dropped into a stable-fluids water field: the velocity solver carries the splash and the surface settles back. Fluid sim and render, both in C#.

physics_renderer - 320x200

A neon-themed 3D-lit terrain tile shown from four camera angles

Neon terrain tile

A 3D-lit terrain tile in a neon palette, rendered from four cameras with real cast shadows composited into one quad - the same shadow lining up from every view is the proof it is honest lighting.

physics_renderer - 320x200 - 4-cam quad

About

What this is

These are the smaller render demos from the McAi research agents - side experiments built to prove the locked OnlyCSharp 1.7 ray tracer, image codecs, stable-fluids and noise libraries compose into real scenes, not just unit tests. Everything here is a fresh render: the teapot turntable was cut to 14 frames to keep it quick, and the four still scenes and the physics loops finished in a few seconds each.

Nothing on this page loads an external asset, font or script beyond a single stylesheet - the images are the program's own output, encoded to PNG and GIF in C#.