Build Windows binary in shared Steam depot

## Summary
- register Bevy's image loader explicitly in the headless asset processor
- use no GPU-compressed image formats because the processor has no render device
- allow PNG processing tasks to complete so `ProcessorState` reaches `Finished`

Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>

.gitea/workflows/ci.yml

@@ -21,6 +21,8 @@ jobs:
             sh -s -- -y --profile minimal
           echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
           "$HOME/.cargo/bin/rustup" toolchain install nightly-2026-09-14 --profile minimal
+          "$HOME/.cargo/bin/rustup" target add x86_64-pc-windows-msvc --toolchain nightly-2026-09-14
+          "$HOME/.cargo/bin/cargo" install cargo-xwin --locked
 
       - name: Cache Rust dependencies and build artifacts
         uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
@@ -41,6 +43,7 @@ jobs:
             libx11-dev \
             libxkbcommon-dev \
             libxkbcommon-x11-0 \
+            lld \
             mesa-vulkan-drivers \
             mold \
             pkg-config
@@ -94,6 +97,9 @@ jobs:
       - name: Build production binary
         run: cargo build --locked --profile production --no-default-features --features debug_features -j 4
 
+      - name: Build Windows production binary
+        run: cargo xwin build --locked --target x86_64-pc-windows-msvc --profile production --no-default-features --features debug_features -j 4 --bin shinespark
+
       - name: Verify production binary is not Bevy/Rust dynamically linked
         run: |
           ! readelf -d target/production/shinespark | grep -E 'libbevy_dylib|libstd-.*\.so'
@@ -101,10 +107,10 @@ jobs:
       - name: Package Linux Steam depot
         if: github.event_name == 'push' && github.ref == 'refs/heads/master'
         run: |
-          mkdir -p build/linux
-          cp target/production/shinespark build/linux/shinespark
-          cp -R assets build/linux/assets
-          cp -R imported_assets build/linux/imported_assets
+          mkdir -p build/game
+          cp target/production/shinespark build/game/shinespark
+          cp target/x86_64-pc-windows-msvc/production/shinespark.exe build/game/shinespark.exe
+          cp -R imported_assets build/game/imported_assets
 
       - if: github.event_name == 'push' && github.ref == 'refs/heads/master'
         uses: CyberAndrii/steam-totp@v1
@@ -123,5 +129,5 @@ jobs:
           appId: 3409670
           buildDescription: ${{ github.sha }}
           rootPath: build
-          depot1Path: linux
+          depot1Path: game
           releaseBranch: master

src/bin/process-assets.rs

@@ -1,8 +1,11 @@
 use bevy::{
     app::ScheduleRunnerPlugin,
     asset::{AssetMode, AssetPlugin, processor::AssetProcessor, processor::ProcessorState},
+    gltf::GltfPlugin,
+    image::{CompressedImageFormats, ImageLoader, ImagePlugin},
     prelude::*,
     tasks::block_on,
+    text::TextPlugin,
 };
 use shinespark::AssetProcessingPlugin;
 use std::{process::ExitCode, time::Duration};
@@ -15,6 +18,8 @@ fn main() -> ExitCode {
             use_asset_processor_override: Some(true),
             ..default()
         })
+        .add_plugins((ImagePlugin::default(), TextPlugin, GltfPlugin::default()))
+        .register_asset_loader(ImageLoader::new(CompressedImageFormats::NONE))
         .add_plugins(AssetProcessingPlugin)
         .add_systems(Update, finish_when_processed);
 

src/lib.rs

@@ -32,7 +32,13 @@ use clap::Parser;
 use ron_asset_manager::RonAssetPlugin;
 
 use crate::{
-    camera::MatchCameraPlugin, fighter::manifest::FighterManifest, game_settings::GameSettings, schedule::GameplaySchedulePlugin, stage::manifest::StageManifest, ui::InGameUIPlugin,
+    camera::MatchCameraPlugin,
+    fighter::manifest::FighterManifest,
+    game_settings::GameSettings,
+    menus::style::FGUiStyle,
+    schedule::GameplaySchedulePlugin,
+    stage::manifest::StageManifest,
+    ui::InGameUIPlugin,
 };
 
 mod args;
@@ -80,6 +86,20 @@ pub enum AppState {
 #[derive(Default)]
 pub struct GamePlugin;
 
+/// Registers every custom asset loader used by the game and asset processor.
+pub struct GameAssetPlugin;
+
+impl Plugin for GameAssetPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_plugins((
+            RonAssetPlugin::<FighterManifest>::create("fighter.ron"),
+            RonAssetPlugin::<StageManifest>::create("stage.ron"),
+            RonAssetPlugin::<GameSettings>::create("ron"),
+            RonAssetPlugin::<FGUiStyle>::create("stylesheet.ron"),
+        ));
+    }
+}
+
 impl Plugin for GamePlugin {
     fn build(&self, app: &mut App) {
         // Each module owns its own systems, rollback registrations and
@@ -99,9 +119,7 @@ impl Plugin for GamePlugin {
                 scripting::importer::FighterScriptImportPlugin,
                 stage::StagePlugin,
                 MatchCameraPlugin,
-                RonAssetPlugin::<FighterManifest>::create("fighter.ron"),
-                RonAssetPlugin::<StageManifest>::create("stage.ron"),
-                RonAssetPlugin::<GameSettings>::create("ron"),
+                GameAssetPlugin,
                 InGameUIPlugin,
             ))
             .add_plugins(menus::MenuPlugin)
@@ -155,13 +173,14 @@ impl Plugin for GamePlugin {
     }
 }
 
-/// Registers only the custom asset processors used by CI and release builds.
-/// The processing binary adds this plugin without starting the game.
+/// Registers the custom asset loaders and processors used by CI and release
+/// builds. The processing binary adds this plugin without starting the game.
 pub struct AssetProcessingPlugin;
 
 impl Plugin for AssetProcessingPlugin {
     fn build(&self, app: &mut App) {
         app.add_plugins((
+            GameAssetPlugin,
             scripting::importer::FighterScriptImportPlugin,
             fighter::baked_animation::BakedAnimationAssetProcessingPlugin,
         ));

src/menus/mod.rs

@@ -6,12 +6,10 @@ use bevy::{
     prelude::*,
 };
 
-use ron_asset_manager::RonAssetPlugin;
-
 use crate::{
     AppState,
     game_settings::CommonAssets,
-    menus::{character_select::CharacterSelectScreen, main_menu::MainMenu, style::FGUiStyle},
+    menus::{character_select::CharacterSelectScreen, main_menu::MainMenu},
 };
 pub mod button;
 pub mod character_select;
@@ -222,7 +220,6 @@ impl Plugin for MenuPlugin {
         //---------
         // STAGE SELECT END
         //---------
-        .add_plugins(RonAssetPlugin::<FGUiStyle>::create("stylesheet.ron"))
         .add_systems(
             Update,
             (