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Johannes Hackel 1fcf6a444f Add emissive_exposure_weight to the StandardMaterial (#13350 ) # Objective - The emissive color gets multiplied by the camera exposure value. But this cancels out almost any emissive effect. - Fixes #13133 - Closes PR #13337 ## Solution - Add emissive_exposure_weight to the StandardMaterial - In the shader this value is stored in the alpha channel of the emissive color. - This value defines how much the exposure influences the emissive color. - It's equal to Google's Filament: https://google.github.io/filament/Materials.html#emissive `4f021583f1/shaders/src/shading_lit.fs (L287)` ## Testing - The result of [EmissiveStrengthTest](https://github.com/KhronosGroup/glTF-Sample-Models/tree/main/2.0/EmissiveStrengthTest) with the default value of 0.0: without bloom: ![emissive_fix](https://github.com/bevyengine/bevy/assets/688816/8f8c131a-464a-4d7b-a9e4-4e28d679ee5d) with bloom: ![emissive_fix_bloom](https://github.com/bevyengine/bevy/assets/688816/89f200ee-3bd5-4daa-bf64-8999b56df3fa)		2024-05-17 13:49:53 +00:00
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src	Add emissive_exposure_weight to the StandardMaterial (#13350 )	2024-05-17 13:49:53 +00:00
Cargo.toml	Implement clearcoat per the Filament and the `KHR_materials_clearcoat` specifications. (#13031 )	2024-05-05 22:57:05 +00:00
README.md	Add `README.md` to all crates (#13184 )	2024-05-02 18:56:00 +00:00

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