bevy_material

[atlv24]

Objective

• extract material infrastructure to be usable for scene description without a renderer
• rework of Move MaterialProperties from bevy_pbr to bevy_material #21543 on top of More fully type erase all pbr types from specialization  #22408, you can view a clean diff here: https://github.com/tychedelia/bevy/compare/type-erase-more-materials...atlv24:ad/material2?expand=1
• this is the culmination of numerous crate splits and refactors leading up to this point, and the another step towards shared 2d and 3d rendering infrastructure deduplication.

Solution

• new crate bevy_material with MaterialProperties struct that lets one define when a material draws, how it behaves, what shaders it uses, specialization functions, and bind group layouts expected.

Testing

[alice-i-cecile]

@atlv24 is this ready for review? You've added the label but it's still in draft mode :)

[Zeophlite]

@atlv24 is this ready for review? You've added the label but it's still in draft mode :)

Waiting on #22408 to merge first

[atlv24]

the label is "Needs Review" not "Ready for Review" :P

It is reviewable, but i recommend reviewing and letting char's PR merge first.

[Zeophlite]

you can view a clean diff here: https://github.com/tychedelia/bevy/compare/type-erase-more-materials...atlv24:ad/material2?expand=1

Love how simple this is!

[atlv24]

Yeah im pretty happy with the diff being 1,227 additions and 607 deletions, and the majority of the additions are license files and the new tomls

[atlv24]

I really appreciate all the exploratory work you did in this space btw @Zeophlite ! It was very useful for determining where we needed another "cut" so to speak to make the crate fall out more cleanly.