Games write their own displayables with render(), renpy.Render, blit, fill, canvas() and renpy.redraw.
render.ts keeps a tree of placed pieces (child renders, ordinary displayables, fills and drawing
commands) and turns it into DOM elements that stay put between redraws; pointer events reach event()
as pygame-style objects, and a returned value ends the interaction. Shaders and GPU properties are
accepted and ignored. The converter whitelists the calls and methods and accepts `import pygame`.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
