Merge gfx/wet into integration

# Conflicts:
#	LIGHTING.md
#	crates/benilla-app/assets/ui/OptionsFrame.xml
#	crates/benilla-app/src/cvars.rs
#	crates/benilla-app/src/monkey_gfx.rs
#	crates/benilla-assets/src/materials.rs
#	crates/benilla-assets/src/shaders/fog_hook.wgsl
#	crates/benilla-assets/src/shaders/monkey_frame.wgsl
#	crates/benilla-world/src/lighting/monkey_frame.rs
#	crates/benilla-world/src/shaders/static_gx.wgsl

crates/benilla-app/src/capture/scenarios.rs

@@ -1627,6 +1627,23 @@ pub(super) const ON_DEMAND: &[Scenario] = &[
         minute: 1170,
         ui: None,
     },
+    // MONKEY (wet): rain on surfaces. Run with rain forced and the ground pre-soaked, e.g.
+    // `WOW_WEATHER=1,0.8 WOW_WETNESS=1 WOW_WET_T=3`, and A/B with `WOW_RAIN_SURFACES=0|1`.
+    // Goldshire's square: the road, the grass, the inn's roofs and walls.
+    Scenario {
+        name: "wet-goldshire", map: Some(MAP_AZEROTH),
+        eye: [-9460.0, 70.0, 59.5], look: [-9452.0, 30.0, 55.0], minute: 720, ui: None,
+    },
+    // The Elwynn river bank, close enough (< 25 yd) for the rain rings.
+    Scenario {
+        name: "wet-river", map: Some(MAP_AZEROTH),
+        eye: [-9514.0, -330.0, 64.0], look: [-9500.0, -352.0, 61.4], minute: 720, ui: None,
+    },
+    // A Stormwind Trade District street: exterior WMO paving, walls, eaves.
+    Scenario {
+        name: "wet-stormwind", map: Some(MAP_AZEROTH),
+        eye: [-8833.38, 628.63, 98.5], look: [-8815.0, 662.0, 93.5], minute: 720, ui: None,
+    },
 ];
 
 /// MONKEY (p0 baseline): the Elwynn programme view, above the canopy east of Goldshire looking

crates/benilla-app/src/cvars.rs

@@ -952,6 +952,13 @@ pub(crate) const REGISTERED: &[Registered] = &[
         "0",
         "benilla's own: distance fog, 0 Classic (1.12 linear) / 1 Modern (soft, sun-coloured horizon)",
     ),
+    // MONKEY (wet): rain darkens and glosses sky-exposed surfaces and rings the water. Default 1
+    // (only visible while it rains or the ground dries); the Graphics preset's High sets 1.
+    ours(
+        "rainSurfaces",
+        "1",
+        "benilla's own: rain wets sky-exposed surfaces and rings the water, 0 Off / 1 On",
+    ),
     ours(
         "waterQuality",
         "1",
@@ -3791,6 +3798,9 @@ mod tests {
             app.init_resource::<benilla_world::ffx_glow::SkyDither>();
             // MONKEY (fog)
             app.init_resource::<benilla_world::lighting::FogModelSetting>();
+            // MONKEY (wind)
+            app.init_resource::<benilla_world::wind::FoliageWind>();
+            app.init_resource::<benilla_world::weather::RainSurfaces>(); // MONKEY (wet)
             app.add_observer(crate::monkey_gfx::on_cvar);
         },
         |app| {

crates/benilla-app/src/monkey_gfx.rs

@@ -7,11 +7,13 @@
 //! | `skyDither` | 0 Off / 1 On | 0 | 1 | `benilla_world::ffx_glow::SkyDither` |
 //! | `foliageWind` | 0 Off / 1 Grass / 2 Grass + trees | 2 | 2 | `benilla_world::wind::FoliageWind` |
 //! | `fogModel` | 0 Classic / 1 Modern | 0 | 1 | `benilla_world::lighting::FogModelSetting` |
+//! | `rainSurfaces` | 0 Off / 1 On | 1 | 1 | `benilla_world::weather::RainSurfaces` |
 
 use benilla_world::ffx_glow::SkyDither;
 use benilla_world::lighting::FogModelSetting;
 use benilla_world::wind::FoliageWind;
 use bevy::prelude::*;
+use benilla_world::weather::RainSurfaces; // MONKEY (wet)
 
 /// The programme's cvar observer (registered by [`MonkeyGfxPlugin`]).
 pub(crate) fn on_cvar(
@@ -20,6 +22,7 @@ pub(crate) fn on_cvar(
     mut foliage_wind: ResMut<FoliageWind>,
     // MONKEY (fog)
     mut fog_model: ResMut<FogModelSetting>,
+    mut rain: ResMut<RainSurfaces>, // MONKEY (wet)
 ) {
     match ev.key().as_str() {
         "skydither" => {
@@ -43,6 +46,13 @@ pub(crate) fn on_cvar(
         }
         // MONKEY (fog): `WOW_FOGMODEL` still wins for the session (captures).
         "fogmodel" => fog_model.set_from_cvar(ev.num()),
+        // MONKEY (wet): wet surfaces + rain ripples.
+        "rainsurfaces" => {
+            let want = ev.num() >= 0.5;
+            if rain.0 != want {
+                rain.0 = want;
+            }
+        }
         _ => {}
     }
 }
@@ -56,6 +66,7 @@ impl Plugin for MonkeyGfxPlugin {
         app.init_resource::<SkyDither>()
             .init_resource::<FoliageWind>()
             .init_resource::<FogModelSetting>()
+            .init_resource::<RainSurfaces>() // MONKEY (wet)
             .add_observer(on_cvar);
     }
 }