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<img width="1392" alt="image" src="https://user-images.githubusercontent.com/418473/203873533-44c029af-13b7-4740-8ea3-af96bd5867c9.png"> <img width="1392" alt="image" src="https://user-images.githubusercontent.com/418473/203873549-36be7a23-b341-42a2-8a9f-ceea8ac7a2b8.png"> # Objective - Add support for the “classic” distance fog effect, as well as a more advanced atmospheric fog effect. ## Solution This PR: - Introduces a new `FogSettings` component that controls distance fog per-camera. - Adds support for three widely used “traditional” fog falloff modes: `Linear`, `Exponential` and `ExponentialSquared`, as well as a more advanced `Atmospheric` fog; - Adds support for directional light influence over fog color; - Extracts fog via `ExtractComponent`, then uses a prepare system that sets up a new dynamic uniform struct (`Fog`), similar to other mesh view types; - Renders fog in PBR material shader, as a final adjustment to the `output_color`, after PBR is computed (but before tone mapping); - Adds a new `StandardMaterial` flag to enable fog; (`fog_enabled`) - Adds convenience methods for easier artistic control when creating non-linear fog types; - Adds documentation around fog. --- ## Changelog ### Added - Added support for distance-based fog effects for PBR materials, controllable per-camera via the new `FogSettings` component; - Added `FogFalloff` enum for selecting between three widely used “traditional” fog falloff modes: `Linear`, `Exponential` and `ExponentialSquared`, as well as a more advanced `Atmospheric` fog; |
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