[TRACKER] Decal and OmniLight3D/SpotLight3D projector issues

[Calinou]

This is a tracker issue for the 3D Decal node and OmniLight3D/SpotLight3D projectors in Godot 4.0's Vulkan renderer.

Decal bugs

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1. Vulkan: Decal sorting changes unexpectedly depending on camera rotation #49639
   bug confirmed topic:3d topic:rendering +4
2. Decal node's default orientation doesn't work well with Align Transform/Rotation with View #49647
   bug topic:3d topic:editor topic:rendering usability +5
3. Volumetric Fog texture oddly fills with pitch black when Decal is present in camera frustrum #54496
   archived topic:3d topic:rendering +3
4. AnimatedTextures not properly displaying using the Decal node #54506
   enhancement topic:3d topic:rendering +3
5. Vulkan: Decal 'Normal Fade' feature appears incorrect on scaled meshes #56590
   bug confirmed topic:3d topic:rendering +4
6. Vulkan: Crash in scene with 128 OmniLights and 128 SpotLights rendered at the same time (or Decals/ReflectionProbes) #56657
   bug confirmed crash topic:3d topic:rendering +5
7. Vulkan: Decal and Light3D distance fade uses view plane distance, resulting in unstable fading when the camera rotates (unlike GeometryInstance3D) #58513
   bug topic:3d topic:rendering +3
8. Textures specified in a Decal are not detected as used in 3D #62031
   bug topic:3d topic:import topic:rendering +4
9. Vulkan: "Sparkling" glow flares at certain camera angles with overlapping Decal nodes and WorldEnvironment Glow #66623
   bug topic:3d topic:rendering +3
10. Vulkan Mobile: Decals pop away when there are more than 7 decals on a mesh resource (instead of the expected 8) #70231
    bug confirmed documentation topic:3d topic:rendering +5
11. Vulkan Mobile: Decals are applied to the 3D manipulation gizmo #70774
    bug confirmed topic:3d topic:editor topic:rendering +5
12. Vulkan Forward+: Scaling a decal non-uniformly causes clustering artifacts to appear #73945
    bug confirmed topic:3d topic:rendering +4
13. Missing texture on a single Decal causes clustering artifacts to appear on other decals #89467
    bug topic:3d topic:rendering +3

Light3D projector bugs

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1. Vulkan: Projector textures on SpotLight3D and OmniLight3D needs adjustment to scaling #50445
   bug confirmed topic:3d topic:rendering +4
2. Vulkan: OmniLight3D projectors are upside down compared to PanoramaSkyMaterial's default orientation #57704
   bug topic:3d topic:rendering +3
3. Vulkan: SpotLight3D's Projector doesn't work (regression from 4.0.alpha5 and later) #59488
   bug confirmed topic:3d topic:rendering +4
4. Textures specified in an OmniLight3D or SpotLight3D projector are not detected as used in 3D #62032
   bug topic:3d topic:import topic:rendering +4
5. Vulkan: Light3D projectors are broken when distance fade is enabled #67845
   bug confirmed topic:3d topic:rendering +4
6. Vulkan: Random meshes vanish in large scenes with lights that have a projector texture #68274
   bug confirmed topic:3d topic:rendering +4

Enhancements

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1. Add an automatic rotation property to Decal #49188
   enhancement topic:3d topic:rendering +3
2. Decal ORM implementation not completely overriding source texture? #51299
   documentation topic:3d topic:rendering +3
3. Make decals contribute to global illumination godot-proposals#1162
   topic:3d topic:rendering +2
4. Add mesh decals and multi-opacity decals godot-proposals#2188
   topic:3d topic:rendering +2
5. Add a Normal Map Magnitude property to Decals godot-proposals#3326
   topic:3d topic:rendering +2
6. Add support for custom decal materials godot-proposals#4938
   topic:3d topic:rendering +2