0a4b92678c
This patch enhances the quality setting of the Glare node. Previously, Medium and Low quality were implemented using a single tap interpolation downsampling filter, which means small highlights that only span a small number of pixels could be missed during downsampling, and that might change across frames, causing flickering. To fix this, we use a higher quality downsampling filter that averages the entire 2x2 or 4x4 pixel blocks for the Medium and Low quality settings respectively. The upsampling pass also needs to be improved to avoid offsets, but this will be implemented separately. Pull Request: https://projects.blender.org/blender/blender/pulls/140237
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