Merge branch 'main' into eevee-next-world-shader

Spawning surfels uses a new shader pipeline (called `capture`) to avoid
the complexity of modifying the deferred or forward pipeline.
The shaders are light to compile and should only be compiled on bake.

This is very WIP: the surfel projection box is hardcoded and the 3
projections are done every frame. The surfels are placed in a regular
grid because of the raster pipeline used to spawn them.

Note: While this is really fast, I am not sure this will scale well for
highly detailed lighting conditions. In the case where the surfel density
is too low, the aliasing might create really poor result.

@@ -0,0 +30,4 @@
+class Instance;
+
+/* -------------------------------------------------------------------- */
+/** \name Cryptomatte

@@ -0,0 +50,4 @@
+class CubemapsModule {
+ private:
+  /** The max number of cubemaps to track. */
+  static constexpr int MaxCubemaps = 1;

@@ -65,0 +95,4 @@
+  side.cubemap_face_ps.framebuffer_set(&side.cubemap_face_fb);
+  side.cubemap_face_ps.state_set(DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_ALWAYS);
+  side.cubemap_face_ps.material_set(manager, gpumat);
+

@@ -0,0 +52,4 @@
+}
+
+/* -------------------------------------------------------------------- */
+/** \name World

@@ -46,0 +55,4 @@
+
+  struct CubemapSide {
+    PassSimple cubemap_face_ps;
+    View view;

@@ -0,0 +1,16 @@
+void light_world_eval(ClosureDiffuse diffuse,