Radiosity renders the light that bounces off matte surfaces.

Since light from the bulb is focused downward, none of it reaches the ceiling directly. This is a problem because a ray tracer, which does not see indirect light, paints that ceiling black.

Direct light	Radiosity

The left render, lit like …

Ray tracing renders a picture by firing rays from the eye into a scene and asking what each one hits. Shadows, mirrors and glass all come from that one move.

A z-buffer renderer, the kind most games use, shades each surface from its lights alone. It never asks what stands …

The 2ad MMIX playground, playmmix, puts an MMIX machine in your browser.

MMIX is Knuth's 64-bit RISC architecture. I built checksmix to assemble and run programs for it. playmmix wraps that same engine with an editor and a live debugger, in Rust, Yew and WebAssembly.

Editing the source re-assembles and …

Meet mmixdb, part of checksmix — a Unix-style debugger for MMIX. It lets you approach your program from the point of view of the machine state and that's how MMIX is meant to work.

MMIX

MMIX is Knuth's 64-bit RISC machine, the one that replaced MIX throughout the current edition of …

Engineers write prompts as part of the job now, and being able to refer to them in an efficient manner is a valuable improvement to your workflow. Skip pasting file contents into Claude entirely: open find-file (C-x C-f) to surface the path Emacs already knows, select it and cut it …

When Claude delegates a prompt to a sub-agent, it pastes the whole prompt text into that sub-agent's context by default — thousands of tokens, duplicated, every time. Tell it to hand over a file reference instead of the copied text, and that one change alone can cut input tokens 25-40%.