Commits on Jul 11, 2024

1. Upgrades SDFGI to HDDAGI …

   Supersedes godotengine#86007
   
   This is a new global illumination system that is a full upgrade to SDFGI
   Key advantages are:
   
   * Significantly faster base frame time.
   * An order of magnitude faster updates (SDFGI drops frames very significantly when moving, as a consequence of having to redo its entire SDF even for a small motion).
   * Higher quality (less light leaks, properly energy conservation, much better reflections, others)
   * Occlusion remains the same as in SDFGI. I experimented with other systems (the one in DDGI) but everything has worse tradeoffs.
   
   It is meant as a drop-in replacement, so games using SDFGI should get HDDAGI transparently.
   
   TODO:
   
   - [ ] For some reason gets DEVICE LOST on Intel GPUs. Can´t figure out why.
   - [ ] Waiting for a PR fixing the normal buffer precision in order to fix some issues.
   
   TODO AFTER MERGING:
   
   - [ ] High density probes support.
   - [ ] Dynamic objects support.
   
   Known issues:

   

   reduz committed Jul 11, 2024
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2. Fixes to divergent control flow on Intel.

   

   reduz committed Jul 11, 2024
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3. Restore the Y Scale as a cascade layout setting. …

   Fixed Volumetric Fog

   

   reduz committed Jul 11, 2024
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