Fixing several embarrassing bugs.

WebGPU and REGL projects now flipY again, and they properly flip the symbolY glyph coordinate in the rain pass's fragment shader.
Switching on some older code that was disabled for FF Nightly support— it makes more sense to wait for that support as implementations finalize.
Added mipmap to images loaded into REGL project.

TODO.txt

@@ -1,6 +1,17 @@
 TODO:
 
 Seems like bloom size and resolution impact the REGL and WebGPU bloom implementations differently
+  Ossify the REGL bloom
+    Load all the GLSL from files
+  Move high pass into WebGPU bloom
+
+Live config update roadmap
+
+Write an explanation of the rain pass (and include images)
+  Compute
+  Volumetric quads
+  Fullscreen quad and spacial mapping
+  MSDFs
 
 Audio system
   Toggle (or number representing frequency)
@@ -37,12 +48,6 @@ WebGPU
 
 Improve loop support
 
-Write an explanation of the rain pass (and include images)
-  Compute
-  Volumetric quads
-  Fullscreen quad and spacial mapping
-  MSDFs
-
 Idea: Build a UI
   Replace versions with presets
   Simple changes update the values