Dual Kawase Blur

The plugin adds DualKawaseBlurCompositorEffect class which can be used as part of the Compositor.

Dual Kawase Blur is a multipass post-processing effect with convolution layers that takes advantede of GPU sampling (linear interpolation). It gives a strong blur with a small performance hit compared to Gaussian Blur algorithms. I highly recommend reading this article by Wladislav Artsimovich for a better explanation.

The plugin has a good performance compared to Gaussian Blur for very strong blurs.