Render Toy contract

import miskeyed.render_toy; provides the pass contract for authored Render Toy programs. SceneSample carries the scene color target. Post programs receive the host-bound combined sceneColor sampler and the sampleScene(float2 uv) helper.

A Render Toy session chooses compatible vertex and fragment entry points for each binding. The module does not own documents, focus, time, or QRhi resources.

Implementation

Relevant source: shaders/workbench/render_toy.slang and modes/render_toy/RenderToySession.*.