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# ProgressivePlugin

[//]: # (todo: image)

[Example](https://threepipe.org/examples/#progressive-plugin/) —
[Source Code](https://github.com/repalash/threepipe/blob/master/src/plugins/pipeline/ProgressivePlugin.ts) —
[API Reference](https://threepipe.org/docs/classes/ProgressivePlugin.html)

Progressive Plugin adds a post-render pass to blend the last frame with the current frame.

This is used as a dependency in other plugins for progressive rendering effect which is useful for progressive shadows, gi, denoising, baking, anti-aliasing, and many other effects. The helper function `convergedPromise` returns a new promise that can be used to wait for the progressive rendering to converge.