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# Objective - Add auto exposure/eye adaptation to the bevy render pipeline. - Support features that users might expect from other engines: - Metering masks - Compensation curves - Smooth exposure transitions This PR is based on an implementation I already built for a personal project before https://github.com/bevyengine/bevy/pull/8809 was submitted, so I wasn't able to adopt that PR in the proper way. I've still drawn inspiration from it, so @fintelia should be credited as well. ## Solution An auto exposure compute shader builds a 64 bin histogram of the scene's luminance, and then adjusts the exposure based on that histogram. Using a histogram allows the system to ignore outliers like shadows and specular highlights, and it allows to give more weight to certain areas based on a mask. --- ## Changelog - Added: AutoExposure plugin that allows to adjust a camera's exposure based on it's scene's luminance. --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |
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