EEVEE LegacyでAmbient Occlutionが消える

Ambient Occlutionが消える場合

厳密には、0.99～1の値しか持っていない状態になるときがあるので、その解決策

https://gyazo.com/0dd4710b2c8c0441f1edcd8389868b1e

これは0.999~1.0の値を0~1にした図

以下のいずれか、もしくは全てをやる

Blend ModeをAlpha Blend以外にする

参考：https://projects.blender.org/blender/blender/issues/67210

No it's a limitation. Alpha blended objects are not rendered in the the AO pass.

Screen Space Refractionを使わない

Material settingのチェックを外す

Screen Space Reflectionsの中のRefractionを消す

https://gyazo.com/7cd209c3fc1c575837a10756044dd5eb

参考：https://projects.blender.org/blender/blender/issues/65758

This is a limitation, It was just undocumented. Thanks!

https://docs.blender.org/manual/en/4.1/render/eevee/limitations.html#materials

Screen Space Reflections and Ambient Occlusion are not compatible with Screen Space Refraction; they will be disabled on the surfaces that use it. Surfaces that use Screen Space Refraction will not appear in Screen Space Reflections at the right place. Surfaces that use Screen Space Refraction will not cast Ambient Occlusion onto other surfaces.

https://gyazo.com/5f6e3ce8f7cde79be1cd164014be334d

これでよくなる