Particle system rendering refactoring

FyroxEngine / Fyrox

3D and 2D game engine written in Rust

https://fyrox.rs

MIT License

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Particle system rendering refactoring #566

Closed mrDIMAS closed 7 months ago

mrDIMAS commented 7 months ago

This PR refactors particle system rendering to use collect_render_data method of NodeTrait. Previously, each particle system was rendered via separate render pass, which has a lot of downsides. The PR also adds four new built-in shader variables.