Implement blend distance to tweak or disable blending between Reflection Probes

[jcostello]

Describe the project you are working on

3D environment lighting

Describe the problem or limitation you are having in your project

When working with several Reflection Probes (some of them nested), sometimes you want some details to not blend with the parent reflection probe, so you can have accurate reflection in some areas.

Desire Reflection in the car

Undesired Reflection in the car

Describe the feature / enhancement and how it helps to overcome the problem or limitation

The idea is to have a blend distance attribute to control when the blending between probes starts or even if they blend (one of the probes should override the other one. Maybe with a priority attribute or with hierarchy

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

Read above

If this enhancement will not be used often, can it be worked around with a few lines of script?

No work around posible

Is there a reason why this should be core and not an add-on in the asset library?

Reflection probes are core

[wareya]

+1, but commenting to note that I was having similar issues in 3.5 w/r/t controlling how probes blended with the sky (rather than each other), so whatever gets implemented should make sure take that into account as well.

[jcostello]

+1, but commenting to note that I was having similar issues in 3.5 w/r/t controlling how probes blended with the sky (rather than each other), so whatever gets implemented should make sure take that into account as well.

related to godotengine/godot#61416

[jcostello]

implemented in godotengine/godot#99958