# `CaptureSpec.source`

> Contract 2.0.0 · package sha256 `a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e` · generated from `configurator-runtime.d.ts` by `services/onsite-scripter/scripts/build-contract-docs.mjs`; edit the source, not this file.

Property of [`CaptureSpec`](CaptureSpec.md) · stable · since 2.0.0

```ts
source?: 'render' | 'displayed';
```

'render': off-display; the live camera, accumulators and canvas are untouched. 'displayed': the
frame presented next after the call, as is (beauty or accumulated), at display size; the
runtime re-presents an idle still as shown (an accumulated still's current mean, never a fresh
sample, and the run goes on), and a [`destroy()`](Session.destroy.md) after the call doesn't cancel it. Runtime
overlays (rulers, hotspot badges) and role 'helper' items are in neither; a helper
collection's stage layer and rules still apply.

**Default:** 'render'

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `source` names no product |
| 2. A precedent | pass: [HTMLCanvasElement.toBlob](https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/toBlob) (row `G19`); [Unity ScreenCapture.CaptureScreenshot](https://docs.unity3d.com/ScriptReference/ScreenCapture.CaptureScreenshot.html) (row `K38`) |
| 3. Two apps, or labs | pass: 4 apps (ledger: app-4f16d2f6da, app-bcb7ef21da, app-ceb4eccc72, app-f9a32142f1) |
| 4. The cheaper fix first | decided per need in Appendix B: rows `G19`, `K38` at tier stable (a member only where no rule, data, asset or app code serves the need) |