HD stage 2: sun and moon shadows, the world relit, light shafts, fog and a colour grade (fork patch 12)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -97,6 +97,14 @@ CI: `.gitea/workflows/build.yml` на каждый пуш собирает мо
 25 с на цель в темноте), игрок — **осветительным пистолетом** или `/airdef flare`. Ракета висит ~30 с и
 освещает всё вокруг на ~60–90 м.
 
+**Графика: три пресета** (меню N → «Огонь, ремонт, эффекты…» → «Эффекты», или `/airdef shader off|on|hd`):
+выкл — ванильная картинка; обычные — шейдерные огненные шары, ударная волна и подсветка; **HD** — свой рендер
+освещения в форке: мир дополнительно рисуется в G-буфер (цвет без света и нормали), и все источники света мода
+освещают его попиксельно в HDR — факелы ракет и двигатели, раскалённые боевые блоки, осветительные ракеты, вспышки
+выстрелов, трассеры, взрывы (вспышка и догорающий шар), горящие остовы, пятна прожекторов, — затем bloom и мягкий
+тонмаппинг (ванильный диапазон не трогается, сжимается только то, что ярче). Источники передаются движку новым
+API мода `render.set-lights` (до 512, плавно интерполируются), режим — `render.set-lighting`.
+
 **Сетка J** после сбития ещё 3,5 с держит камеру на сбитой цели, и комплекс в это время не пропадает из сетки.
 
 **Повреждения.** Взрыв рядом с комплексом повреждает его: он хуже поворачивается, хуже видит и попадает,

airdef-mod/shaders/effects.wgsl

@@ -115,7 +115,8 @@ fn post(uv: vec2<f32>, pixel: vec2<f32>) -> vec4<f32> {
     //     the pixel sees, much stronger at night.
     let night = clamp(0.35 - frame.time.z * 1.8, 0.0, 1.0);
     let strength = mix(0.35, 2.2, night);
-    if wall < 1.0e5 {
+    // Under the HD lighting (params[0].w) the engine lights the world from the same lights.
+    if wall < 1.0e5 && frame.params[0].w < 0.5 {
         let p = dir * wall;
         var light = vec3<f32>(0.0);
         for (var i = 0; i < blasts; i++) {

airdef-mod/src/lib.rs

@@ -7,7 +7,7 @@ use horizon_mod_sdk::{
     Mod, Registration, chat, command, game,
     hud::{self, Corner},
     input::{self, Event},
-    render::{self, ModelInstance, ParticleSpawn},
+    render::{self, Lighting, ModelInstance, ParticleSpawn, PointLight},
     storage,
     ui::{self, ButtonWidget, ItemWidget, ListWidget, Screen, Widget},
 };
@@ -72,6 +72,8 @@ struct AirDef {
     far: bool,
     /// The unit the move remote picked (its id), waiting for where to go.
     moving: Option<u32>,
+    /// The HD lighting preset (the engine's lights, bloom, tone mapping).
+    hd: bool,
     /// The world whose state is loaded (`game.world-id`), once one is.
     world: Option<Option<String>>,
     /// The systems' and objects' health as last saved, to save again when it changes.
@@ -276,11 +278,79 @@ impl AirDef {
         self.emit(out);
     }
 
+    /// The HD lighting's lights: flames, glowing warheads, flares, muzzle flashes, tracers,
+    /// blasts (a flash, then the fireball's glow dying down), burning wrecks and the
+    /// searchlights' spots.
+    fn lights(&self, out: &Out) -> Vec<PointLight> {
+        let mut lights: Vec<PointLight> = Vec::new();
+        let mut add = |id: u32, at: DVec3, rgb: (f32, f32, f32), intensity: f32, radius: f32| {
+            if lights.len() < 500 && intensity > 0.05 {
+                lights.push(PointLight { id, x: at.x, y: at.y, z: at.z, color: rgb, intensity, radius: radius.clamp(1.0, 256.0) });
+            }
+        };
+        let tick = self.sim.tick;
+        let flicker = |id: u32| 0.85 + 0.15 * (((tick as u32).wrapping_mul(2654435761) ^ id.wrapping_mul(97)) % 100) as f32 / 100.0;
+        for m in out.models.iter().filter(|m| m.glow) {
+            let s = m.scale.max(0.1);
+            match m.name {
+                "airdef:flame" => add(m.id, m.at, (1.0, 0.55, 0.2), 45.0 * s * flicker(m.id), 32.0 * s.sqrt()),
+                "airdef:geran3_flame" => add(m.id, m.at, (1.0, 0.6, 0.25), 25.0 * s * flicker(m.id), 22.0),
+                "airdef:reentry" => add(m.id, m.at, (1.0, 0.6, 0.32), 60.0 * s, 40.0),
+                "airdef:flare" => add(m.id, m.at, (1.0, 0.93, 0.78), 420.0 * s, 110.0),
+                "airdef:flash" => add(m.id, m.at, (1.0, 0.8, 0.45), 30.0, 14.0),
+                "airdef:tracer" => add(m.id, m.at, (1.0, 0.25, 0.1), 2.5, 6.0),
+                _ => {}
+            }
+        }
+        for b in &self.sim.blasts {
+            let age = tick.saturating_sub(b.start) as f32;
+            let size = b.size;
+            let glow = (-age / (b.life as f32 * 0.15).max(1.0)).exp();
+            let flash = (-age * 0.35).exp() * 4.0;
+            let id = 0x6100_0000 ^ (b.start as u32).wrapping_mul(31) ^ (b.at.x as i32 as u32).wrapping_mul(7);
+            add(id, b.at + DVec3::Y * size as f64 * 0.5, (1.0, 0.58, 0.25), size * size * 18.0 * (glow + flash), size * 14.0);
+        }
+        for s in &self.sim.sams {
+            if !s.alive() && s.burning() {
+                add(s.id + 15, s.pos + DVec3::Y * 1.5, (1.0, 0.5, 0.18), 80.0 * flicker(s.id), 30.0);
+            }
+            // A searchlight's spot where its beam meets the target.
+            if s.kind == SamKind::Light
+                && let Some(t) = s.target.and_then(|t| self.sim.drones.iter().find(|d| d.id == t))
+            {
+                add(s.id + 14, t.pos, (0.95, 0.97, 1.0), 220.0, 30.0);
+            }
+        }
+        lights
+    }
+
+    /// The effects preset: none, the post pass, or the post pass under the HD lighting.
+    fn set_effects(&mut self, shader: bool, hd: bool) {
+        self.sim.shader = shader;
+        if shader {
+            render::set_post(include_str!("../shaders/effects.wgsl"));
+        } else {
+            render::clear_post();
+        }
+        self.hd = shader && hd;
+        self.apply_hd();
+        self.dirty = true;
+    }
+
+    /// Switches the HD lighting.
+    fn apply_hd(&self) {
+        render::set_lighting(Lighting { hd: self.hd, exposure: 1.0, bloom: 0.55 });
+        if !self.hd {
+            render::set_lights(&[]);
+        }
+    }
+
     /// Hands the simulation's output to the game.
     /// The post pass's parameters: blasts and glowing parts (shaders/effects.wgsl).
     fn shader_params(&self, out: &Out) -> Vec<f32> {
         let mut p = vec![0.0f32; 4];
         p[0] = self.sim.tick as f32;
+        p[3] = if self.hd { 1.0 } else { 0.0 };
         let blasts: Vec<&sim::Blast> = self.sim.blasts.iter().rev().take(48).collect();
         p[1] = blasts.len() as f32;
         for b in &blasts {
@@ -300,7 +370,6 @@ impl AirDef {
                 "airdef:tracer" => (1.0, 0.12, 0.05, 0.9),
                 "airdef:reentry" => (1.0, 0.6, 0.3, 1.4),
                 "airdef:flare" => (1.0, 0.94, 0.78, 1.2),
-                "airdef:beam" => (1.0, 0.97, 0.88, 0.15),
                 _ => continue,
             };
             // The shader lights about six times the radius round a light and draws a glow of
@@ -318,6 +387,9 @@ impl AirDef {
         if self.sim.shader {
             render::set_params(&self.shader_params(&out));
         }
+        if self.hd {
+            render::set_lights(&self.lights(&out));
+        }
         let models: Vec<ModelInstance> = out
             .models
             .into_iter()
@@ -423,6 +495,7 @@ impl AirDef {
         }
         text += &format!("damage {}\n", self.sim.damage);
         text += &format!("far {}\n", self.far);
+        text += &format!("effects {} {}\n", self.sim.shader, self.hd);
         for (kind, roles) in &self.sim.roles {
             text += &format!("roles {} {}\n", kind.key(), roles);
         }
@@ -469,6 +542,11 @@ impl AirDef {
                 }
                 Some(&"damage") => self.sim.damage = w.get(1) != Some(&"false"),
                 Some(&"far") => self.far = w.get(1) != Some(&"false"),
+                Some(&"effects") => {
+                    let shader = w.get(1) != Some(&"false");
+                    let hd = w.get(2) == Some(&"true");
+                    self.set_effects(shader, hd);
+                }
                 Some(&"roles") => {
                     if let (Some(kind), Some(r)) = (w.get(1).and_then(|k| SamKind::from_key(k)), w.get(2).and_then(|v| v.parse().ok())) {
                         self.sim.roles.insert(kind, r);
@@ -699,7 +777,8 @@ impl AirDef {
                 }));
                 let broken = self.sim.sams.iter().filter(|s| s.health < 1.0).count();
                 widgets.push(Widget::Button(ButtonWidget { id: BTN_REPAIR, label: format!("Ремонт всех (повреждено: {broken})") }));
-                widgets.push(Widget::Button(ButtonWidget { id: BTN_SHADER, label: format!("Эффекты: {}", onoff(self.sim.shader)) }));
+                let fx = if !self.sim.shader { "выкл" } else if self.hd { "HD (свет, bloom)" } else { "обычные" };
+                widgets.push(Widget::Button(ButtonWidget { id: BTN_SHADER, label: format!("Эффекты: {fx}") }));
                 widgets.push(Widget::Button(ButtonWidget { id: BTN_DAMAGE, label: format!("Разрушения: {}", onoff(self.sim.damage)) }));
                 widgets.push(Widget::Button(ButtonWidget { id: BTN_FAR, label: format!("Дальний ландшафт: {}", onoff(self.far)) }));
                 widgets.push(Widget::Button(ButtonWidget { id: BTN_BACK, label: "← Назад".into() }));
@@ -764,7 +843,7 @@ impl AirDef {
     }
 }
 
-const HELP: &str = "/airdef menu | monitor | grid | replay [map|full|reel|stop] | raid | repair | import | ew on|off | flare | move <номер> | target here | give | deploy <комплекс> | wave <тип|mix> [кол-во] [дальность] | clear | targets clear | damage on|off | shader on|off | hold on|off | roles [комплекс классы] | stats";
+const HELP: &str = "/airdef menu | monitor | grid | replay [map|full|reel|stop] | raid | repair | import | ew on|off | flare | move <номер> | target here | give | deploy <комплекс> | wave <тип|mix> [кол-во] [дальность] | clear | targets clear | damage on|off | shader on|off|hd | hold on|off | roles [комплекс классы] | stats";
 
 impl Mod for AirDef {
     fn init() -> Result<(Self, Registration), String> {
@@ -782,6 +861,7 @@ impl Mod for AirDef {
             replay: None,
             far: true,
             moving: None,
+            hd: false,
             world: None,
             health_mark: 0,
             menu: None,
@@ -1032,12 +1112,13 @@ impl Mod for AirDef {
                 return;
             }
             (Page::More, BTN_SHADER) => {
-                self.sim.shader = !self.sim.shader;
-                if self.sim.shader {
-                    render::set_post(include_str!("../shaders/effects.wgsl"));
-                } else {
-                    render::clear_post();
-                }
+                // Off → effects → HD → off.
+                let (shader, hd) = match (self.sim.shader, self.hd) {
+                    (false, _) => (true, false),
+                    (true, false) => (true, true),
+                    (true, true) => (false, false),
+                };
+                self.set_effects(shader, hd);
             }
             (Page::More, BTN_FAR) => {
                 self.far = !self.far;
@@ -1224,14 +1305,9 @@ impl Mod for AirDef {
                 self.sim.hold = *v == "on";
                 Some(if self.sim.hold { "ПВО: огонь запрещён".into() } else { "ПВО: огонь разрешён".into() })
             }
-            ["shader", v @ ("on" | "off")] => {
-                self.sim.shader = *v == "on";
-                if self.sim.shader {
-                    render::set_post(include_str!("../shaders/effects.wgsl"));
-                } else {
-                    render::clear_post();
-                }
-                Some(format!("Шейдерные эффекты: {}", if self.sim.shader { "вкл" } else { "выкл" }))
+            ["shader", v @ ("on" | "off" | "hd")] => {
+                self.set_effects(*v != "off", *v == "hd");
+                Some(format!("Эффекты: {}", match *v { "off" => "выкл", "hd" => "HD", _ => "обычные" }))
             }
             ["stats"] => Some(format!(
                 "В воздухе: {}, ракет: {}, ПВО: {}, сбито: {}, поражений: {}",

horizon-patches/0001-Mod-API-AirDef-fork-world-models-client-particles-so.patch

@@ -1,7 +1,7 @@
 From 3de7a6875140a107e28563cc44489b55f5794517 Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Wed, 28 Oct 2026 12:37:45 +0300
-Subject: [PATCH 01/10] Mod API (AirDef fork): world models, client particles,
+Subject: [PATCH 01/12] Mod API (AirDef fork): world models, client particles,
  sounds, ground heights
 
 render.set-models draws block models with an interpolated pose per id;

horizon-patches/0002-cargo-horizon-mod-report-particles-and-sounds.patch

@@ -1,7 +1,7 @@
 From a6d64e6415bf618539af464e521091e72b72d72f Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Wed, 28 Oct 2026 12:39:45 +0300
-Subject: [PATCH 02/10] cargo-horizon-mod: report particles and sounds
+Subject: [PATCH 02/12] cargo-horizon-mod: report particles and sounds
 
 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
 ---

horizon-patches/0003-Mod-API-AirDef-fork-full-screen-post-pass-for-mods.patch

@@ -1,7 +1,7 @@
 From ee79b3562feebe51959a01f1585a9e85bd53ccb5 Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Wed, 28 Oct 2026 13:33:10 +0300
-Subject: [PATCH 03/10] Mod API (AirDef fork): full-screen post pass for mods
+Subject: [PATCH 03/12] Mod API (AirDef fork): full-screen post pass for mods
 
 render.set-post compiles a mod's WGSL after a prelude (camera matrices,
 time, 256 vec4 of params, the world's colour and depth) and runs it after

horizon-patches/0004-Mod-models-draw-far-models-as-scaled-impostors-past-.patch

@@ -1,7 +1,7 @@
 From 2b137dbbedd540daeebc7f5e387847aeb56a1355 Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Wed, 28 Oct 2026 22:09:30 +0300
-Subject: [PATCH 04/10] Mod models: draw far models as scaled impostors past
+Subject: [PATCH 04/12] Mod models: draw far models as scaled impostors past
  the far plane, cull at 4096
 
 ---

horizon-patches/0005-Mod-cameras-render.set-views-draws-the-world-from-ot.patch

@@ -1,7 +1,7 @@
 From c8ebca6e0af68630e65211844b34d25c5b985c03 Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Wed, 28 Oct 2026 22:31:00 +0300
-Subject: [PATCH 05/10] Mod cameras: render.set-views draws the world from
+Subject: [PATCH 05/12] Mod cameras: render.set-views draws the world from
  other points into pictures that HUD view shapes show (API level 9)
 
 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

horizon-patches/0006-Mods-more-fuel-per-tick-and-per-event-AirDef-plans-r.patch

@@ -1,7 +1,7 @@
 From 8d2261fc4f8072c32e454139cfea7a8c0cd9d664 Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Wed, 28 Oct 2026 23:08:21 +0300
-Subject: [PATCH 06/10] Mods: more fuel per tick and per event (AirDef plans
+Subject: [PATCH 06/12] Mods: more fuel per tick and per event (AirDef plans
  raids)
 
 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

horizon-patches/0007-Mod-cameras-up-to-1920x1080-full-screen-replays.patch

@@ -1,7 +1,7 @@
 From 6c548de34def8e4a624d734243418090798bd16a Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Wed, 28 Oct 2026 23:25:29 +0300
-Subject: [PATCH 07/10] Mod cameras up to 1920x1080 (full-screen replays)
+Subject: [PATCH 07/12] Mod cameras up to 1920x1080 (full-screen replays)
 
 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
 ---

horizon-patches/0008-Mod-cameras-distant-terrain-tiles-fog-measured-from-.patch

@@ -1,7 +1,7 @@
 From 9b9e93269d67401cc620567a884d5ce97f68d76e Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Thu, 29 Oct 2026 11:15:11 +0300
-Subject: [PATCH 08/10] Mod cameras: distant terrain tiles, fog measured from
+Subject: [PATCH 08/12] Mod cameras: distant terrain tiles, fog measured from
  the camera, no impostors while one is shown
 
 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

horizon-patches/0009-Mods-game.world-id-so-mods-keep-state-per-world-API-.patch

@@ -1,7 +1,7 @@
 From 065d9fa02966238a5bd9ff460392a1a809db0b11 Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Thu, 29 Oct 2026 11:25:45 +0300
-Subject: [PATCH 09/10] Mods: game.world-id, so mods keep state per world (API
+Subject: [PATCH 09/12] Mods: game.world-id, so mods keep state per world (API
  level 9)
 
 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

horizon-patches/0010-cargo-horizon-mod-trial-runs-behind-feature-full-so-.patch

@@ -1,7 +1,7 @@
 From 1bf28135fd9a31f837323dc3a8d81ed73343d816 Mon Sep 17 00:00:00 2001
 From: chexit <chexit@duck.com>
 Date: Thu, 29 Oct 2026 12:01:08 +0300
-Subject: [PATCH 10/10] cargo-horizon-mod: trial runs behind feature full, so a
+Subject: [PATCH 10/12] cargo-horizon-mod: trial runs behind feature full, so a
  packing-only tool skips wasmtime
 
 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>