implements PLN-0083 remove fade pipeline state

crates/console/prometeu-drivers/src/frame_composer.rs

@@ -804,8 +804,6 @@ mod tests {
         }));
 
         let mut gfx = Gfx::new(16, 16, Arc::clone(&banks) as Arc<dyn GlyphBankPoolAccess>);
-        gfx.scene_fade_level = 31;
-        gfx.hud_fade_level = 31;
 
         frame_composer.render_frame(&mut gfx);
         gfx.present();
@@ -895,8 +893,6 @@ mod tests {
         assert!(frame_composer.bind_scene(0));
 
         let mut gfx = Gfx::new(16, 16, Arc::clone(&banks) as Arc<dyn GlyphBankPoolAccess>);
-        gfx.scene_fade_level = 31;
-        gfx.hud_fade_level = 31;
 
         frame_composer.render_frame(&mut gfx);
         gfx.present();
@@ -932,8 +928,6 @@ mod tests {
         let expected_update = expected_resolver.update(&scene, 40, 0);
 
         let mut gfx = Gfx::new(16, 16, Arc::clone(&banks) as Arc<dyn GlyphBankPoolAccess>);
-        gfx.scene_fade_level = 31;
-        gfx.hud_fade_level = 31;
 
         frame_composer.render_frame(&mut gfx);
         frame_composer.set_camera(40, 0);
@@ -965,8 +959,6 @@ mod tests {
             make_glyph_slot_index(&[(0, 0), (1, 1)]),
         );
         let mut gfx = Gfx::new(16, 16, Arc::clone(&banks) as Arc<dyn GlyphBankPoolAccess>);
-        gfx.scene_fade_level = 31;
-        gfx.hud_fade_level = 31;
 
         assert!(frame_composer.bind_scene(0));
         frame_composer.render_frame(&mut gfx);
@@ -1044,8 +1036,6 @@ mod tests {
         assert!(frame_composer.bind_scene(0));
 
         let mut gfx = Gfx::new(16, 16, Arc::clone(&banks) as Arc<dyn GlyphBankPoolAccess>);
-        gfx.scene_fade_level = 31;
-        gfx.hud_fade_level = 31;
         frame_composer.render_frame(&mut gfx);
         gfx.present();
 

crates/console/prometeu-drivers/src/gfx.rs

@@ -33,7 +33,7 @@ pub enum BlendMode {
 ///
 /// `Gfx` owns the framebuffer backend and the canonical game-frame raster path
 /// consumed by `FrameComposer`. That canonical path covers scene composition,
-/// sprite composition, and fades. Public `gfx.*` primitives remain valid.
+/// sprite composition, and primitive packet consumption.
 pub struct Gfx {
     /// Width of the internal framebuffer in pixels.
     w: usize,
@@ -49,15 +49,6 @@ pub struct Gfx {
     /// Hardware sprite list (512 slots). Equivalent to OAM (Object Attribute Memory).
     pub sprites: [Sprite; 512],
 
-    /// Scene brightness/fade level (0 = black/invisible, 31 = fully visible).
-    pub scene_fade_level: u8,
-    /// Target color for the scene fade effect (usually Black).
-    pub scene_fade_color: Color,
-    /// HUD brightness/fade level (independent from the scene).
-    pub hud_fade_level: u8,
-    /// Target color for the HUD fade effect.
-    pub hud_fade_color: Color,
-
     /// Internal sprite count for the current frame state.
     sprite_count: usize,
     /// Internal cache used to sort sprites by layer while keeping stable priority order.
@@ -305,31 +296,6 @@ impl GfxBridge for Gfx {
         self.sprite_count = self.sprite_count.max(index.saturating_add(1)).min(self.sprites.len());
         &mut self.sprites[index]
     }
-
-    fn scene_fade_level(&self) -> u8 {
-        self.scene_fade_level
-    }
-    fn set_scene_fade_level(&mut self, level: u8) {
-        self.scene_fade_level = level;
-    }
-    fn scene_fade_color(&self) -> Color {
-        self.scene_fade_color
-    }
-    fn set_scene_fade_color(&mut self, color: Color) {
-        self.scene_fade_color = color;
-    }
-    fn hud_fade_level(&self) -> u8 {
-        self.hud_fade_level
-    }
-    fn set_hud_fade_level(&mut self, level: u8) {
-        self.hud_fade_level = level;
-    }
-    fn hud_fade_color(&self) -> Color {
-        self.hud_fade_color
-    }
-    fn set_hud_fade_color(&mut self, color: Color) {
-        self.hud_fade_color = color;
-    }
 }
 
 impl Gfx {
@@ -358,10 +324,6 @@ impl Gfx {
             glyph_banks,
             sprites: [EMPTY_SPRITE; 512],
             sprite_count: 0,
-            scene_fade_level: 31,
-            scene_fade_color: Color::BLACK,
-            hud_fade_level: 31,
-            hud_fade_color: Color::BLACK,
             layer_buckets: [
                 Vec::with_capacity(128),
                 Vec::with_capacity(128),
@@ -637,20 +599,13 @@ impl Gfx {
                 &*self.glyph_banks,
             );
         }
-
-        // 2. Scene-only fallback path: sprites and fades still work even before a
-        // cache-backed world composition request is issued for the frame.
-        Self::apply_fade_to_buffer(&mut self.back, self.scene_fade_level, self.scene_fade_color);
-
-        // 3. HUD Fade: independent from scene fade; HUD composition itself remains external.
-        Self::apply_fade_to_buffer(&mut self.back, self.hud_fade_level, self.hud_fade_color);
     }
 
     /// Composes the world from the viewport cache using resolver copy requests.
     ///
     /// This is the cache-backed world path accepted by DEC-0013. The canonical scene
     /// is not consulted here; the renderer only consumes prepared cache materialization
-    /// plus sprite state and fade controls.
+    /// plus sprite state.
     pub fn render_scene_from_cache(
         &mut self,
         cache: &SceneViewportCache,
@@ -681,9 +636,6 @@ impl Gfx {
                 &*self.glyph_banks,
             );
         }
-
-        Self::apply_fade_to_buffer(&mut self.back, self.scene_fade_level, self.scene_fade_color);
-        Self::apply_fade_to_buffer(&mut self.back, self.hud_fade_level, self.hud_fade_color);
     }
 
     pub fn render_game2d_frame_packet(&mut self, packet: &Game2DFramePacket) {
@@ -916,30 +868,6 @@ impl Gfx {
         }
     }
 
-    /// Applies the fade effect to the entire back buffer.
-    /// level: 0 (full color) to 31 (visible)
-    fn apply_fade_to_buffer(back: &mut [u32], level: u8, fade_color: Color) {
-        if level >= 31 {
-            return;
-        } // Fully visible, skip processing
-
-        let weight = level as u16;
-        let inv_weight = 31 - weight;
-        let (fr, fg, fb, fa) = unpack_rgba8888(fade_color.raw());
-
-        for px in back.iter_mut() {
-            let (sr, sg, sb, sa) = unpack_rgba8888(*px);
-
-            // Formula: (src * weight + fade * inv_weight) / 31
-            let r = ((sr as u16 * weight + fr as u16 * inv_weight) / 31) as u8;
-            let g = ((sg as u16 * weight + fg as u16 * inv_weight) / 31) as u8;
-            let b = ((sb as u16 * weight + fb as u16 * inv_weight) / 31) as u8;
-            let a = ((sa as u16 * weight + fa as u16 * inv_weight) / 31) as u8;
-
-            *px = pack_rgba8888(r, g, b, a);
-        }
-    }
-
     pub fn draw_text(&mut self, x: i32, y: i32, text: &str, color: Color) {
         let mut cx = x;
         let mut cy = y;
@@ -1312,8 +1240,6 @@ mod tests {
         let update = resolver.update(&scene, 0, 0);
 
         let mut gfx = Gfx::new(16, 16, banks);
-        gfx.scene_fade_level = 31;
-        gfx.hud_fade_level = 31;
         gfx.render_scene_from_cache(&cache, &update, &[0, 0, 0, 0]);
 
         assert_eq!(gfx.back[0], Color::RED.raw());
@@ -1344,8 +1270,6 @@ mod tests {
         let update = resolver.update(&scene, 0, 0);
 
         let mut gfx = Gfx::new(16, 16, Arc::clone(&banks) as Arc<dyn GlyphBankPoolAccess>);
-        gfx.scene_fade_level = 31;
-        gfx.hud_fade_level = 31;
 
         gfx.sprites[0] = Sprite {
             glyph: Glyph { glyph_id: 0, palette_id: 4 },

crates/console/prometeu-drivers/src/hardware.rs

@@ -241,8 +241,6 @@ mod tests {
         let mut resolver = SceneViewportResolver::new(16, 16, 4, 4, 12, 20);
         let update = resolver.update(&scene, 0, 0);
 
-        hardware.gfx.scene_fade_level = 31;
-        hardware.gfx.hud_fade_level = 31;
         hardware.gfx.render_scene_from_cache(&cache, &update, &[0, 0, 0, 0]);
         hardware.gfx.present();
 

crates/console/prometeu-hal/src/gfx_bridge.rs

@@ -73,13 +73,4 @@ pub trait GfxBridge {
 
     fn sprite(&self, index: usize) -> &Sprite;
     fn sprite_mut(&mut self, index: usize) -> &mut Sprite;
-
-    fn scene_fade_level(&self) -> u8;
-    fn set_scene_fade_level(&mut self, level: u8);
-    fn scene_fade_color(&self) -> Color;
-    fn set_scene_fade_color(&mut self, color: Color);
-    fn hud_fade_level(&self) -> u8;
-    fn set_hud_fade_level(&mut self, level: u8);
-    fn hud_fade_color(&self) -> Color;
-    fn set_hud_fade_color(&mut self, color: Color);
 }

crates/console/prometeu-system/src/services/vm_runtime/tests.rs

@@ -710,8 +710,6 @@ fn tick_renders_scene_through_public_composer_syscalls() {
     let mut slots = [None; 16];
     slots[0] = Some(0);
     glyph_slot_index.rebuild_from_slots(&slots);
-    hardware.gfx.scene_fade_level = 31;
-    hardware.gfx.hud_fade_level = 31;
 
     runtime.initialize_vm(&mut log_service, &mut vm, &cartridge).expect("runtime must initialize");
     let report = runtime.tick(
@@ -759,8 +757,6 @@ fn tick_draw_text_survives_no_scene_frame_path() {
     );
     let cartridge = cartridge_with_program(program, caps::GFX);
     let mut hardware = Hardware::new();
-    hardware.gfx.scene_fade_level = 31;
-    hardware.gfx.hud_fade_level = 31;
 
     runtime.initialize_vm(&mut log_service, &mut vm, &cartridge).expect("runtime must initialize");
     let report = runtime.tick(

discussion/index.ndjson

@@ -1,5 +1,5 @@
 {"type":"meta","next_id":{"DSC":39,"AGD":39,"DEC":31,"PLN":87,"LSN":47,"CLSN":1}}
-{"type":"discussion","id":"DSC-0038","status":"in_progress","ticket":"render-frame-packet-boundary","title":"Logical Render Pipelines and Command Packets","created_at":"2026-05-25","updated_at":"2026-05-25","tags":["gfx","renderer","runtime","frame-composer","architecture","ui","pipeline"],"agendas":[{"id":"AGD-0038","file":"AGD-0038-renderframepacket-boundary-for-classic-2d-renderer.md","status":"accepted","created_at":"2026-05-25","updated_at":"2026-05-25"}],"decisions":[{"id":"DEC-0030","file":"DEC-0030-logical-render-pipeline-command-boundary.md","status":"accepted","created_at":"2026-05-25","updated_at":"2026-05-25","ref_agenda":"AGD-0038"}],"plans":[{"id":"PLN-0073","file":"PLN-0073-render-contract-specs.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0074","file":"PLN-0074-hal-render-submission-types.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0075","file":"PLN-0075-rendermanager-core.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0076","file":"PLN-0076-capabilities-and-abi-domain-split.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0077","file":"PLN-0077-composer-buffer-and-game2d-packet.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0078","file":"PLN-0078-classic2d-game-renderer-consumer.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0079","file":"PLN-0079-gfx2d-primitive-domain.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0080","file":"PLN-0080-shell-ui-packet-and-gfxui-domain.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0081","file":"PLN-0081-shell-hub-migration.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0082","file":"PLN-0082-frame-publication-and-present-boundary.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0083","file":"PLN-0083-fade-removal.md","status":"open","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0084","file":"PLN-0084-host-debug-overlay-removal.md","status":"open","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0085","file":"PLN-0085-pbs-stdlib-and-syscall-declarations.md","status":"open","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0086","file":"PLN-0086-end-to-end-render-boundary-validation.md","status":"open","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]}],"lessons":[]}
+{"type":"discussion","id":"DSC-0038","status":"in_progress","ticket":"render-frame-packet-boundary","title":"Logical Render Pipelines and Command Packets","created_at":"2026-05-25","updated_at":"2026-05-25","tags":["gfx","renderer","runtime","frame-composer","architecture","ui","pipeline"],"agendas":[{"id":"AGD-0038","file":"AGD-0038-renderframepacket-boundary-for-classic-2d-renderer.md","status":"accepted","created_at":"2026-05-25","updated_at":"2026-05-25"}],"decisions":[{"id":"DEC-0030","file":"DEC-0030-logical-render-pipeline-command-boundary.md","status":"accepted","created_at":"2026-05-25","updated_at":"2026-05-25","ref_agenda":"AGD-0038"}],"plans":[{"id":"PLN-0073","file":"PLN-0073-render-contract-specs.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0074","file":"PLN-0074-hal-render-submission-types.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0075","file":"PLN-0075-rendermanager-core.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0076","file":"PLN-0076-capabilities-and-abi-domain-split.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0077","file":"PLN-0077-composer-buffer-and-game2d-packet.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0078","file":"PLN-0078-classic2d-game-renderer-consumer.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0079","file":"PLN-0079-gfx2d-primitive-domain.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0080","file":"PLN-0080-shell-ui-packet-and-gfxui-domain.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0081","file":"PLN-0081-shell-hub-migration.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0082","file":"PLN-0082-frame-publication-and-present-boundary.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0083","file":"PLN-0083-fade-removal.md","status":"done","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0084","file":"PLN-0084-host-debug-overlay-removal.md","status":"open","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0085","file":"PLN-0085-pbs-stdlib-and-syscall-declarations.md","status":"open","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]},{"id":"PLN-0086","file":"PLN-0086-end-to-end-render-boundary-validation.md","status":"open","created_at":"2026-05-25","updated_at":"2026-05-25","ref_decisions":["DEC-0030"]}],"lessons":[]}
 {"type":"discussion","id":"DSC-0035","status":"done","ticket":"task-owned-shell-windows","title":"Agenda - Task-Owned Shell Windows","created_at":"2026-05-15","updated_at":"2026-05-15","tags":["runtime","os","task","window-manager","shell","lifecycle"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0044","file":"discussion/lessons/DSC-0035-task-owned-shell-windows/LSN-0044-task-window-liveness-belongs-to-the-task.md","status":"done","created_at":"2026-05-15","updated_at":"2026-05-15"}]}
 {"type":"discussion","id":"DSC-0034","status":"done","ticket":"system-os-domain-facades","title":"Agenda - SystemOS Domain Facades","created_at":"2026-05-15","updated_at":"2026-05-15","tags":["runtime","os","services","api-surface","lifecycle","fs"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0043","file":"discussion/lessons/DSC-0034-system-os-domain-facades/LSN-0043-systemos-domain-facades.md","status":"done","created_at":"2026-05-15","updated_at":"2026-05-15"}]}
 {"type":"discussion","id":"DSC-0023","status":"done","ticket":"perf-full-migration-to-atomic-telemetry","title":"Agenda - [PERF] Full Migration to Atomic Telemetry","created_at":"2026-04-10","updated_at":"2026-04-10","tags":["perf","runtime","telemetry"],"agendas":[{"id":"AGD-0021","file":"AGD-0021-full-migration-to-atomic-telemetry.md","status":"done","created_at":"2026-04-10","updated_at":"2026-04-10"}],"decisions":[{"id":"DEC-0008","file":"DEC-0008-full-migration-to-atomic-telemetry.md","status":"accepted","created_at":"2026-04-10","updated_at":"2026-04-10"}],"plans":[{"id":"PLN-0007","file":"PLN-0007-full-migration-to-atomic-telemetry.md","status":"done","created_at":"2026-04-10","updated_at":"2026-04-10"}],"lessons":[{"id":"LSN-0028","file":"discussion/lessons/DSC-0023-perf-full-migration-to-atomic-telemetry/LSN-0028-converging-to-single-atomic-telemetry-source.md","status":"done","created_at":"2026-04-10","updated_at":"2026-04-10"}]}

discussion/workflow/plans/PLN-0083-fade-removal.md

@@ -2,7 +2,7 @@
 id: PLN-0083
 ticket: render-frame-packet-boundary
 title: Fade Removal
-status: open
+status: done
 created: 2026-05-25
 ref_decisions: [DEC-0030]
 tags: [gfx, renderer, runtime, frame-composer, architecture, ui, pipeline]