VIP debug tools reflect configured color

Cargo.toml

@@ -4,7 +4,7 @@ description = "An emulator for the Virtual Boy."
 repository = "https://git.virtual-boy.com/PVB/lemur"
 publish = false
 license = "MIT"
-version = "0.15.0"
+version = "0.15.2"
 edition = "2024"
 
 [dependencies]

build.Dockerfile

@@ -10,30 +10,30 @@ RUN apt-get update && \
     apt-get install -y ca-certificates
 COPY llvm.sources /etc/apt/sources.list.d/llvm.sources
 RUN apt-get update && \
-    apt-get install -y bash bzip2 clang-22 git lld-22 llvm-22 make patch xz-utils && \
+    apt-get install -y bash bzip2 clang-23 git lld-23 llvm-23 make patch xz-utils && \
-    ln -s $(which clang-22) /usr/bin/clang && \
+    ln -s $(which clang-23) /usr/bin/clang && \
-    ln -s $(which clang++-22) /usr/bin/clang++ && \
+    ln -s $(which clang++-23) /usr/bin/clang++ && \
-    ln -s $(which ld64.lld-22) /usr/bin/ld64.lld && \
+    ln -s $(which ld64.lld-23) /usr/bin/ld64.lld && \
     SDK_VERSION=14.5 UNATTENDED=1 ENABLE_COMPILER_RT_INSTALL=1 TARGET_DIR=/osxcross ./build.sh
 
-FROM rust:1.98-trixie
+FROM rust:1.99-trixie
 ADD --chmod=644 "https://apt.llvm.org/llvm-snapshot.gpg.key" /etc/apt/trusted.gpg.d/apt.llvm.org.asc
 COPY llvm.sources /etc/apt/sources.list.d/llvm.sources
 RUN rustup target add x86_64-pc-windows-msvc && \
     rustup target add x86_64-apple-darwin && \
     rustup target add aarch64-apple-darwin && \
     apt-get update && \
-    apt-get install -y clang-22 lld-22 libc6-dev libasound2-dev libudev-dev genisoimage mingw-w64 && \
+    apt-get install -y clang-23 lld-23 libc6-dev libasound2-dev libudev-dev genisoimage mingw-w64 && \
     cargo install cargo-bundle xwin && \
     xwin --accept-license splat --output xwin && \
     rm -rf .xwin-cache && \
-    ln -s $(which clang-22) /usr/bin/clang && \
+    ln -s $(which clang-23) /usr/bin/clang && \
-    ln -s $(which clang++-22) /usr/bin/clang++
+    ln -s $(which clang++-23) /usr/bin/clang++
 COPY --from=osxcross /osxcross /osxcross
 
 ENV PATH="/osxcross/bin:$PATH" \
     LD_LIBRARY_PATH="/osxcross/lib" \
-    CC="clang-22" CXX="clang++-22" AR="llvm-ar-22" \
+    CC="clang-23" CXX="clang++-23" AR="llvm-ar-23" \
     CC_x86_64-apple-darwin="o64-clang" \
     CXX_x86_64-apple-darwin="o64-clang++" \
     CC_aarch64-apple-darwin="oa64-clang" \
@@ -43,11 +43,11 @@ ENV PATH="/osxcross/bin:$PATH" \
     SHROOMS_CFLAGS_x86_64-pc-windows-msvc="-flto" \
     CFLAGS_x86_64-pc-windows-msvc="-I/xwin/crt/include -I/xwin/sdk/include/ucrt -I/xwin/sdk/include/um -I/xwin/sdk/include/shared" \
     CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_RUSTFLAGS="-Lnative=/xwin/crt/lib/x86_64 -Lnative=/xwin/sdk/lib/um/x86_64 -Lnative=/xwin/sdk/lib/ucrt/x86_64 -Clinker-plugin-lto -Clink-arg=-fuse-ld=lld" \
-    CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER="lld-link-22" \
+    CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER="lld-link-23" \
     CARGO_TARGET_X86_64_APPLE_DARWIN_LINKER="o64-clang" \
-    CARGO_TARGET_X86_64_APPLE_DARWIN_AR="llvm-ar-22" \
+    CARGO_TARGET_X86_64_APPLE_DARWIN_AR="llvm-ar-23" \
     CARGO_TARGET_AARCH64_APPLE_DARWIN_LINKER="oa64-clang" \
-    CARGO_TARGET_AARCH64_APPLE_DARWIN_AR="llvm-ar-22" \
+    CARGO_TARGET_AARCH64_APPLE_DARWIN_AR="llvm-ar-23" \
-    RC_PATH="llvm-rc-22" \
+    RC_PATH="llvm-rc-23" \
     MACOSX_DEPLOYMENT_TARGET="14.5"
 ENTRYPOINT ["bash"]

build.rs

@@ -31,7 +31,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         .define("VB_DIRECT_FRAME", "on_frame")
         .define("VB_DIRECT_READ", "on_read")
         .define("VB_DIRECT_WRITE", "on_write")
-        .define("VBU_REALLOC", "vbu_realloc_shim")
+        .define("VBU_MEMMGR", "VBU_MEMMGR")
         .file(Path::new("shrooms-vb-core/core/vb.c"))
         .file(Path::new("shrooms-vb-core/util/isx.c"))
         .file(Path::new("shrooms-vb-core/util/vbu.c"))

llvm.sources

@@ -1,4 +1,4 @@
 Types: deb deb-src
 URIs: http://apt.llvm.org/trixie/
-Suites: llvm-toolchain-trixie-22
+Suites: llvm-toolchain-trixie-23
 Components: main

src/app.rs

@@ -23,7 +23,7 @@ use winit::{
 };
 
 use crate::{
-    config::{AppConfig, CliArgs},
+    config::{AppConfig, CliArgs, Config},
     controller::ControllerManager,
     emulator::{EmulatorClient, EmulatorCommand, SimId},
     filesystem::Persistence,
@@ -94,7 +94,7 @@ impl Application {
         handle: OwnedDisplayHandle,
         persistence: Persistence,
         args: CliArgs,
-        config: AppConfig,
+        config: Config<AppConfig>,
     ) -> Self {
         let wgpu = WgpuState::new(handle, config);
         let icon = load_icon().ok().map(Arc::new);
@@ -504,11 +504,11 @@ impl ApplicationHandler<UserEvent> for Application {
 struct WgpuState {
     instance: wgpu::Instance,
     device_descriptor: Arc<dyn Fn(&wgpu::Adapter) -> wgpu::DeviceDescriptor<'static> + Send + Sync>,
-    config: AppConfig,
+    config: Config<AppConfig>,
 }
 
 impl WgpuState {
-    fn new(handle: OwnedDisplayHandle, config: AppConfig) -> Self {
+    fn new(handle: OwnedDisplayHandle, config: Config<AppConfig>) -> Self {
         #[allow(unused_variables)]
         let egui_wgpu::WgpuSetupCreateNew {
             instance_descriptor: wgpu::InstanceDescriptor { backends, .. },
@@ -531,6 +531,7 @@ impl WgpuState {
     }
 
     fn init(&mut self, window: &Window) -> egui_wgpu::WgpuSetupExisting {
+        self.config.refresh();
         let power_preference =
             wgpu::PowerPreference::from_env().unwrap_or(self.config.power_preference);
         debug!("power preference: {power_preference:?}");

src/config.rs

@@ -1,9 +1,9 @@
-use anyhow::Result;
 use bytemuck::NoUninit;
 use clap::{Parser, ValueEnum};
 use egui::{Color32, Pos2, Vec2};
 use serde::{Deserialize, Serialize};
 
+pub use crate::filesystem::Config;
 use crate::{emulator::SimId, filesystem::Persistence, window::DisplayMode};
 use std::path::PathBuf;
 
@@ -116,38 +116,31 @@ pub struct AppConfig {
     #[serde(default = "default_save_data_location")]
     pub save_data_location: SaveDataLocation,
 }
-
+impl Default for AppConfig {
-impl AppConfig {
+    fn default() -> Self {
-    pub fn load(persistence: &Persistence) -> Self {
-        if let Ok(config) = persistence.load_config(APP_CONFIG_FILENAME) {
-            return config;
-        }
         Self {
             power_preference: default_power_preference(),
             force_fallback: false,
             save_data_location: default_save_data_location(),
         }
     }
+}
 
-    pub fn save(&self, persistence: &Persistence) -> Result<()> {
+impl AppConfig {
-        persistence.save_config(APP_CONFIG_FILENAME, &self)
+    pub fn load(persistence: &Persistence) -> Config<Self> {
+        persistence.config(APP_CONFIG_FILENAME)
     }
 
-    pub fn update(&mut self, args: &CliArgs) -> bool {
+    pub fn apply_updates(&mut self, args: &CliArgs) {
-        let mut updated = false;
         if let Some(pref) = args.wgpu_power_preference {
             self.power_preference = pref.into();
-            updated = true;
         }
         if let Some(force_fallback) = args.wgpu_force_fallback {
             self.force_fallback = force_fallback;
-            updated = true;
         }
         if let Some(save_data_location) = args.save_data_location {
             self.save_data_location = save_data_location;
-            updated = true;
         }
-        updated
     }
 }
 
@@ -171,12 +164,8 @@ pub struct SimConfig {
     #[serde(default)]
     pub position: Option<Pos2>,
 }
-
+impl Default for SimConfig {
-impl SimConfig {
+    fn default() -> Self {
-    pub fn load(persistence: &Persistence, sim_id: SimId) -> Self {
-        if let Ok(config) = persistence.load_config(sim_config_filename(sim_id)) {
-            return config;
-        }
         Self {
             display_mode: DisplayMode::Anaglyph,
             colors: COLOR_PRESETS[0],
@@ -187,9 +176,11 @@ impl SimConfig {
             position: None,
         }
     }
+}
 
-    pub fn save(&self, persistence: &Persistence, sim_id: SimId) -> Result<()> {
+impl SimConfig {
-        persistence.save_config(sim_config_filename(sim_id), self)
+    pub fn load(persistence: &Persistence, sim_id: SimId) -> Config<Self> {
+        persistence.config(sim_config_filename(sim_id))
     }
 }
 

src/emulator/shrooms_vb_util.rs

@@ -1,13 +1,104 @@
-use std::ffi::c_void;
+use std::{
+    ffi::c_void,
+    sync::{LazyLock, Mutex},
+};
+
+#[derive(Default)]
+struct Reallocator {
+    allocations: Vec<Allocation>,
+}
+
+unsafe impl Send for Reallocator {}
+
+struct Allocation {
+    ptr: *mut u8,
+    size: usize,
+}
+impl Allocation {
+    fn new(size: usize) -> Self {
+        let layout = Self::layout(size);
+        // SAFETY: our layout is not zero, not too big, and properly aligned
+        let ptr = unsafe { std::alloc::alloc_zeroed(layout) };
+        if ptr.is_null() {
+            std::alloc::handle_alloc_error(layout);
+        }
+        Self { ptr, size }
+    }
+
+    fn layout(size: usize) -> std::alloc::Layout {
+        assert!(size != 0);
+        std::alloc::Layout::from_size_align(size, 8).expect("far too large an allocation")
+    }
+
+    fn as_slice(&self) -> &[u8] {
+        // SAFETY: we allocated this ourselves, it's safe
+        unsafe { std::slice::from_raw_parts(self.ptr, self.size) }
+    }
+
+    fn as_mut_slice(&mut self) -> &mut [u8] {
+        // SAFETY: we allocated this ourselves, it's safe
+        unsafe { std::slice::from_raw_parts_mut(self.ptr, self.size) }
+    }
+}
+
+impl Drop for Allocation {
+    fn drop(&mut self) {
+        // SAFETY: we allocated this ourselves with this layout, and it hasn't been freed
+        unsafe { std::alloc::dealloc(self.ptr, Self::layout(self.size)) };
+    }
+}
+
+impl Reallocator {
+    fn realloc(&mut self, ptr: *mut c_void, new_size: usize) -> *mut c_void {
+        if let Some(old_data) = self.load_allocation(ptr) {
+            if new_size == 0 {
+                // free
+                std::ptr::null_mut()
+            } else {
+                // actually reallocate and copy the data over
+                let mut new_data = Allocation::new(new_size);
+                let bytes_to_copy = old_data.size.min(new_size);
+                new_data.as_mut_slice()[..bytes_to_copy]
+                    .copy_from_slice(&old_data.as_slice()[..bytes_to_copy]);
+                self.store_allocation(new_data)
+            }
+        } else if new_size > 0 {
+            // fresh allocation
+            let allocation = Allocation::new(new_size);
+            self.store_allocation(allocation)
+        } else {
+            std::ptr::null_mut()
+        }
+    }
+
+    fn load_allocation(&mut self, ptr: *mut c_void) -> Option<Allocation> {
+        if ptr.is_null() {
+            return None;
+        }
+        let index = self
+            .allocations
+            .iter()
+            .enumerate()
+            .find_map(|(i, alloc)| std::ptr::addr_eq(alloc.ptr, ptr).then_some(i))?;
+        let allocation = self.allocations.remove(index);
+        Some(allocation)
+    }
+
+    fn store_allocation(&mut self, allocation: Allocation) -> *mut c_void {
+        let ptr = allocation.ptr;
+        self.allocations.push(allocation);
+        ptr.cast()
+    }
+}
+
+static VBU_ALLOC: LazyLock<Mutex<Reallocator>> =
+    LazyLock::new(|| Mutex::new(Reallocator::default()));
 
 #[unsafe(no_mangle)]
-unsafe fn vbu_realloc_shim(ptr: *mut c_void, new_size: usize) -> *mut c_void {
+#[allow(nonstandard_style)]
-    if !ptr.is_null() {
+unsafe fn VBU_MEMMGR(ptr: *mut c_void, new_size: usize) -> *mut c_void {
-        // not supporting proper realloc because it needs bookkeeping and it's unnecessary
+    let mut allocator = VBU_ALLOC.lock().unwrap();
-        return std::ptr::null_mut();
+    allocator.realloc(ptr, new_size)
-    }
-    let allocation = vec![0u8; new_size].into_boxed_slice();
-    Box::into_raw(allocation).cast()
 }
 
 #[link(name = "vb")]
@@ -25,7 +116,7 @@ pub fn rom_from_isx(bytes: &[u8]) -> Option<Vec<u8>> {
     if raw_rom.is_null() {
         return None;
     }
-    // SAFETY: the rom was allocated by vbu_realloc_shim, which created it from a Vec<u8>.
+    let bytes = VBU_ALLOC.lock().unwrap().load_allocation(raw_rom)?;
-    let rom = unsafe { Vec::from_raw_parts(raw_rom.cast(), rom_length, rom_length) };
+    assert_eq!(bytes.size, rom_length);
-    Some(rom)
+    Some(bytes.as_slice().to_vec())
 }

src/filesystem.rs

@@ -1,4 +1,13 @@
-use std::{fs, path::PathBuf};
+use std::{
+    collections::HashMap,
+    fs,
+    ops::Deref,
+    path::PathBuf,
+    sync::{
+        Arc, Mutex,
+        atomic::{AtomicU64, Ordering},
+    },
+};
 
 use anyhow::{Result, bail};
 use directories::ProjectDirs;
@@ -7,12 +16,42 @@ use serde::{Deserialize, Serialize};
 #[derive(Clone)]
 pub struct Persistence {
     config_dir: Option<PathBuf>,
+    versions: Arc<Mutex<HashMap<String, Arc<AtomicU64>>>>,
 }
 
 impl Persistence {
     pub fn new() -> Self {
         Self {
             config_dir: init_config_dir(),
+            versions: Arc::new(Mutex::new(HashMap::new())),
+        }
+    }
+
+    pub fn config<T: ConfigCompatible>(&self, file: &str) -> Config<T> {
+        let latest_version = self
+            .versions
+            .lock()
+            .unwrap()
+            .entry(file.to_string())
+            .or_default()
+            .clone();
+        let path = self
+            .config_dir
+            .as_ref()
+            .map(|p| p.join(file).with_extension("json"));
+        let value = if let Some(p) = path.as_ref()
+            && let Ok(bytes) = fs::read(p)
+            && let Ok(v) = serde_json::from_slice(&bytes)
+        {
+            v
+        } else {
+            T::default()
+        };
+        Config {
+            value,
+            version: latest_version.load(Ordering::Relaxed),
+            latest_version,
+            path,
         }
     }
 
@@ -50,3 +89,55 @@ pub fn init_data_dir() -> Option<PathBuf> {
 fn project_dirs() -> Option<ProjectDirs> {
     ProjectDirs::from("com", "virtual-boy", "Lemur")
 }
+
+pub trait ConfigCompatible: Clone + Default + Eq + Serialize + for<'a> Deserialize<'a> {}
+impl<T: Clone + Default + Eq + Serialize + for<'a> Deserialize<'a>> ConfigCompatible for T {}
+
+// A wrapper for a T (probably) stored on the filesystem.
+// Cheap to dereference, easy to sync changes to all copies.
+pub struct Config<T> {
+    value: T,
+    version: u64,
+    latest_version: Arc<AtomicU64>,
+    path: Option<PathBuf>,
+}
+
+impl<T> Deref for Config<T> {
+    type Target = T;
+
+    fn deref(&self) -> &Self::Target {
+        &self.value
+    }
+}
+
+impl<T: ConfigCompatible> Config<T> {
+    pub fn refresh(&mut self) {
+        let version = self.latest_version.load(Ordering::Relaxed);
+        if self.version == version {
+            return;
+        }
+        if let Some(path) = &self.path
+            && let Ok(bytes) = fs::read(path)
+            && let Ok(latest) = serde_json::from_slice(&bytes)
+        {
+            self.value = latest;
+        }
+        self.version = version;
+    }
+
+    pub fn update(&mut self, update: impl FnOnce(&mut T)) {
+        let mut new_value = self.value.clone();
+        update(&mut new_value);
+        if self.value == new_value {
+            return;
+        }
+        if let Some(path) = &self.path
+            && let Ok(bytes) = serde_json::to_vec(&new_value)
+        {
+            let _ = fs::write(path, bytes);
+        }
+        let version = self.latest_version.fetch_add(1, Ordering::Relaxed) + 1;
+        self.value = new_value.clone();
+        self.version = version;
+    }
+}

src/main.rs

@@ -94,9 +94,8 @@ fn main() -> Result<()> {
     let persistence = Persistence::new();
 
     let mut config = AppConfig::load(&persistence);
-    if config.update(&args) {
+    config.update(|c| c.apply_updates(&args));
-        let _ = config.save(&persistence);
+
-    }
     let p1 = SimConfig::load(&persistence, SimId::Player1);
     let p2 = SimConfig::load(&persistence, SimId::Player2);
 

src/window/game.rs

@@ -7,7 +7,7 @@ use std::{
 
 use crate::{
     app::UserEvent,
-    config::{AppConfig, COLOR_PRESETS, SaveDataLocation, SimConfig},
+    config::{AppConfig, COLOR_PRESETS, Config, SaveDataLocation, SimConfig},
     emulator::{EmulatorClient, EmulatorCommand, EmulatorState, SimId, SimState},
     filepicker::FilePicker,
     filesystem::Persistence,
@@ -42,7 +42,7 @@ pub struct GameWindow {
     persistence: Persistence,
     shortcuts: ShortcutProvider,
     sim_id: SimId,
-    config: SimConfig,
+    config: Config<SimConfig>,
     toasts: Toasts,
     screen: Option<GameScreen>,
     messages: mpsc::Receiver<Toast>,
@@ -124,25 +124,38 @@ impl GameWindow {
             ChildWindow::CharacterData => AppWrapper::of_dyn(CharacterDataWindow::new(
                 self.sim_id,
                 &self.memory,
+                &self.persistence,
+                &self.images,
+            )),
+            ChildWindow::BgMap => AppWrapper::of_dyn(BgMapWindow::new(
+                self.sim_id,
+                &self.memory,
+                &self.persistence,
+                &self.images,
+            )),
+            ChildWindow::Objects => AppWrapper::of_dyn(ObjectWindow::new(
+                self.sim_id,
+                &self.memory,
+                &self.persistence,
+                &self.images,
+            )),
+            ChildWindow::Worlds => AppWrapper::of_dyn(WorldWindow::new(
+                self.sim_id,
+                &self.memory,
+                &self.persistence,
                 &self.images,
             )),
-            ChildWindow::BgMap => {
-                AppWrapper::of_dyn(BgMapWindow::new(self.sim_id, &self.memory, &self.images))
-            }
-            ChildWindow::Objects => {
-                AppWrapper::of_dyn(ObjectWindow::new(self.sim_id, &self.memory, &self.images))
-            }
-            ChildWindow::Worlds => {
-                AppWrapper::of_dyn(WorldWindow::new(self.sim_id, &self.memory, &self.images))
-            }
             ChildWindow::FrameBuffers => AppWrapper::of_dyn(FrameBufferWindow::new(
                 self.sim_id,
                 &self.memory,
+                &self.persistence,
                 &self.images,
             )),
-            ChildWindow::Registers => {
+            ChildWindow::Registers => AppWrapper::of_dyn(RegisterWindow::new(
-                AppWrapper::of_dyn(RegisterWindow::new(self.sim_id, &self.memory))
+                self.sim_id,
-            }
+                &self.memory,
+                &self.persistence,
+            )),
             ChildWindow::Terminal => {
                 AppWrapper::of_dyn(TerminalWindow::new(self.sim_id, &self.client))
             }
@@ -334,7 +347,7 @@ impl GameWindow {
             }
             let watch_rom = self.client.is_rom_watched(self.sim_id);
             if ui.selectable_button(watch_rom, "Watch ROM").clicked() {
-                self.update_config(|c| c.watch_rom = !watch_rom);
+                self.config.update(|c| c.watch_rom = !watch_rom);
                 self.client
                     .send_command(EmulatorCommand::WatchRom(self.sim_id, !watch_rom));
             }
@@ -395,7 +408,7 @@ impl GameWindow {
             ui.separator();
             let low_battery = self.config.low_battery;
             if ui.selectable_button(low_battery, "Low Battery").clicked() {
-                self.update_config(|c| c.low_battery = !low_battery);
+                self.config.update(|c| c.low_battery = !low_battery);
                 let _ = self
                     .proxy
                     .send_event(UserEvent::LowBattery(self.sim_id, !low_battery));
@@ -551,7 +564,7 @@ impl GameWindow {
                     ui.send_viewport_cmd(ViewportCommand::InnerSize(current_dims * scale));
                 }
 
-                self.update_config(|c| {
+                self.config.update(|c| {
                     c.display_mode = display_mode;
                     c.dimensions = current_dims * scale;
                 });
@@ -559,7 +572,7 @@ impl GameWindow {
             ui.menu_button("Colors", |ui| {
                 for preset in COLOR_PRESETS {
                     if ui.color_pair_button(preset[0], preset[1]).clicked() {
-                        self.update_config(|c| c.colors = preset);
+                        self.config.update(|c| c.colors = preset);
                     }
                 }
                 ui.with_layout(ui.layout().with_cross_align(egui::Align::Center), |ui| {
@@ -589,7 +602,7 @@ impl GameWindow {
                 .selectable_button(self.config.audio_enabled, "Enabled")
                 .clicked()
             {
-                self.update_config(|c| c.audio_enabled = !c.audio_enabled);
+                self.config.update(|c| c.audio_enabled = !c.audio_enabled);
                 self.client.send_command(EmulatorCommand::SetAudioEnabled(
                     self.sim_id,
                     self.config.audio_enabled,
@@ -611,8 +624,7 @@ impl GameWindow {
                     return;
                 };
                 let mut app_config = AppConfig::load(&self.persistence);
-                app_config.save_data_location = new_location;
+                app_config.update(|c| c.save_data_location = new_location);
-                let _ = app_config.save(&self.persistence);
                 self.client
                     .send_command(EmulatorCommand::SetSaveDataLocation(new_location));
             };
@@ -662,19 +674,10 @@ impl GameWindow {
             self.color_picker = None;
         }
         if updated {
-            self.update_config(|c| c.colors = colors);
+            self.config.update(|c| c.colors = colors);
         }
     }
 
-    fn update_config(&mut self, update: impl FnOnce(&mut SimConfig)) {
-        let mut new_config = self.config.clone();
-        update(&mut new_config);
-        if self.config != new_config {
-            let _ = new_config.save(&self.persistence, self.sim_id);
-        }
-        self.config = new_config;
-    }
-
     fn button_for(&self, ctx: &Context, text: &str, command: Command) -> Button<'_> {
         let button = Button::new(text);
         match self.shortcuts.shortcut_for(command) {
@@ -701,6 +704,7 @@ impl AppWindow for GameWindow {
     }
 
     fn show(&mut self, ui: &mut Ui) {
+        self.config.refresh();
         let has_player_2 = self.client.has_player_2();
         if !self.show_player_name && has_player_2 {
             ui.send_viewport_cmd(ViewportCommand::Title(format!("Lemur ({})", self.sim_id)));
@@ -731,7 +735,7 @@ impl AppWindow for GameWindow {
             bounds.max - bounds.min
         };
         let position = ui.input(|i| i.viewport().outer_rect.map(|r| r.min));
-        self.update_config(|c| {
+        self.config.update(|c| {
             c.dimensions = dimensions;
             c.position = position;
         });

src/window/vip/bgmap.rs

@@ -1,14 +1,16 @@
 use std::sync::Arc;
 
 use egui::{
-    Align, CentralPanel, Checkbox, Color32, ComboBox, Image, ScrollArea, Slider, TextEdit,
+    Align, CentralPanel, Checkbox, ComboBox, Image, ScrollArea, Slider, TextEdit, TextureOptions,
-    TextureOptions, Ui, ViewportBuilder,
+    Ui, ViewportBuilder,
 };
 use egui_extras::{Column, Size, StripBuilder, TableBuilder};
 use serde::{Deserialize, Serialize};
 
 use crate::{
+    config::{Config, SimConfig},
     emulator::SimId,
+    filesystem::Persistence,
     images::{ImageBuffer, ImageParams, ImageRenderer, ImageTextureLoader},
     memory::{MemoryClient, MemoryView},
     window::{
@@ -46,9 +48,14 @@ pub struct BgMapWindow {
 }
 
 impl BgMapWindow {
-    pub fn new(sim_id: SimId, memory: &Arc<MemoryClient>, images: &ImageTextureLoader) -> Self {
+    pub fn new(
+        sim_id: SimId,
+        memory: &Arc<MemoryClient>,
+        persistence: &Persistence,
+        images: &ImageTextureLoader,
+    ) -> Self {
         let state: UiData<State> = UiData::new();
-        let renderer = BgMapRenderer::new(sim_id, memory);
+        let renderer = BgMapRenderer::new(sim_id, persistence, memory);
         let params = images.add(
             sim_id,
             renderer,
@@ -229,6 +236,7 @@ struct BgMapParams {
 }
 
 struct BgMapRenderer {
+    config: Config<SimConfig>,
     chardata: MemoryView,
     bgmaps: MemoryView,
     brightness: MemoryView,
@@ -236,8 +244,9 @@ struct BgMapRenderer {
 }
 
 impl BgMapRenderer {
-    pub fn new(sim_id: SimId, memory: &MemoryClient) -> Self {
+    pub fn new(sim_id: SimId, persistence: &Persistence, memory: &MemoryClient) -> Self {
         Self {
+            config: SimConfig::load(persistence, sim_id),
             chardata: memory.watch(sim_id, 0x00078000, 0x8000),
             bgmaps: memory.watch(sim_id, 0x00020000, 0x20000),
             brightness: memory.watch(sim_id, 0x0005f824, 8),
@@ -246,6 +255,8 @@ impl BgMapRenderer {
     }
 
     fn render_bgmap(&self, image: &mut ImageBuffer, bgmap_index: usize, generic_palette: bool) {
+        let color = self.config.colors[0];
+
         let chardata = self.chardata.borrow();
         let bgmaps = self.bgmaps.borrow();
         let brightness = self.brightness.borrow();
@@ -253,9 +264,9 @@ impl BgMapRenderer {
 
         let brts = brightness.read::<[u8; 8]>(0);
         let colors = if generic_palette {
-            [utils::generic_palette(Color32::RED); 4]
+            [utils::generic_palette(color); 4]
         } else {
-            [0, 2, 4, 6].map(|i| utils::palette_colors(palettes.read(i), &brts, Color32::RED))
+            [0, 2, 4, 6].map(|i| utils::palette_colors(palettes.read(i), &brts, color))
         };
 
         for (i, cell) in bgmaps.range::<u16>(bgmap_index * 4096, 4096).enumerate() {
@@ -279,6 +290,8 @@ impl BgMapRenderer {
     }
 
     fn render_bgmap_cell(&self, image: &mut ImageBuffer, index: usize, generic_palette: bool) {
+        let color = self.config.colors[0];
+
         let chardata = self.chardata.borrow();
         let bgmaps = self.bgmaps.borrow();
         let brightness = self.brightness.borrow();
@@ -296,9 +309,9 @@ impl BgMapRenderer {
         } = CellData::parse(cell);
         let char = chardata.read::<[u16; 8]>(char_index);
         let palette = if generic_palette {
-            utils::generic_palette(Color32::RED)
+            utils::generic_palette(color)
         } else {
-            utils::palette_colors(palettes.read(palette_index * 2), &brts, Color32::RED)
+            utils::palette_colors(palettes.read(palette_index * 2), &brts, color)
         };
 
         for row in 0..8 {
@@ -321,6 +334,7 @@ impl ImageRenderer<2> for BgMapRenderer {
     }
 
     fn render(&mut self, params: &Self::Params, images: &mut [ImageBuffer; 2]) {
+        self.config.refresh();
         self.render_bgmap_cell(&mut images[0], params.cell_index, params.generic_palette);
         self.render_bgmap(
             &mut images[1],

src/window/vip/chardata.rs

@@ -8,7 +8,9 @@ use egui_extras::{Column, Size, StripBuilder, TableBuilder};
 use serde::{Deserialize, Serialize};
 
 use crate::{
+    config::{Config, SimConfig},
     emulator::SimId,
+    filesystem::Persistence,
     images::{ImageBuffer, ImageParams, ImageRenderer, ImageTextureLoader},
     memory::{MemoryClient, MemoryView},
     window::{
@@ -99,6 +101,7 @@ impl Default for State {
 
 pub struct CharacterDataWindow {
     sim_id: SimId,
+    config: Config<SimConfig>,
     brightness: MemoryView,
     palettes: MemoryView,
     params: ImageParams<CharDataParams>,
@@ -106,7 +109,13 @@ pub struct CharacterDataWindow {
 }
 
 impl CharacterDataWindow {
-    pub fn new(sim_id: SimId, memory: &MemoryClient, images: &ImageTextureLoader) -> Self {
+    pub fn new(
+        sim_id: SimId,
+        memory: &MemoryClient,
+        persistence: &Persistence,
+        images: &ImageTextureLoader,
+    ) -> Self {
+        let config = SimConfig::load(persistence, sim_id);
         let state: UiData<State> = UiData::new();
         let renderer = CharDataRenderer::new(sim_id, memory);
         let params = images.add(
@@ -115,10 +124,12 @@ impl CharacterDataWindow {
             CharDataParams {
                 palette: state.palette,
                 index: state.index,
+                color: config.colors[0],
             },
         );
         Self {
             sim_id,
+            config,
             brightness: memory.watch(sim_id, 0x0005f824, 8),
             palettes: memory.watch(sim_id, 0x0005f860, 16),
             params,
@@ -226,17 +237,19 @@ impl CharacterDataWindow {
         self.params.write(CharDataParams {
             palette: self.state.palette,
             index: self.state.index,
+            color: self.config.colors[0],
         });
     }
 
     fn load_palette_colors(&self) -> [Color32; 4] {
+        let color = self.config.colors[0];
         let Some(offset) = self.state.palette.offset() else {
-            return utils::generic_palette(Color32::RED);
+            return utils::generic_palette(color);
         };
         let palette = self.palettes.borrow().read(offset);
         let brightnesses = self.brightness.borrow();
         let brts = brightnesses.read(0);
-        utils::palette_colors(palette, &brts, Color32::RED)
+        utils::palette_colors(palette, &brts, color)
     }
 
     fn show_chardata(&mut self, ui: &mut Ui) {
@@ -262,6 +275,7 @@ impl AppWindow for CharacterDataWindow {
     }
 
     fn show(&mut self, ui: &mut Ui) {
+        self.config.refresh();
         self.state.load(ui);
         CentralPanel::default().show(ui, |ui| {
             ui.horizontal_top(|ui| {
@@ -286,8 +300,8 @@ impl AppWindow for CharacterDataWindow {
 struct CharDataParams {
     palette: Palette,
     index: usize,
+    color: Color32,
 }
-
 struct CharDataRenderer {
     chardata: MemoryView,
     brightness: MemoryView,
@@ -306,8 +320,8 @@ impl ImageRenderer<2> for CharDataRenderer {
     }
 
     fn render(&mut self, params: &Self::Params, image: &mut [ImageBuffer; 2]) {
-        self.render_character(&mut image[0], params.palette, params.index);
+        self.render_character(&mut image[0], params.palette, params.index, params.color);
-        self.render_character_data(&mut image[1], params.palette);
+        self.render_character_data(&mut image[1], params.palette, params.color);
     }
 }
 
@@ -320,11 +334,17 @@ impl CharDataRenderer {
         }
     }
 
-    fn render_character(&self, image: &mut ImageBuffer, palette: Palette, index: usize) {
+    fn render_character(
+        &self,
+        image: &mut ImageBuffer,
+        palette: Palette,
+        index: usize,
+        color: Color32,
+    ) {
         if index >= 2048 {
             return;
         }
-        let palette = self.load_palette(palette);
+        let palette = self.load_palette(palette, color);
         let chardata = self.chardata.borrow();
         let character = chardata.range::<u16>(index * 8, 8);
         for (row, pixels) in character.enumerate() {
@@ -335,8 +355,8 @@ impl CharDataRenderer {
         }
     }
 
-    fn render_character_data(&self, image: &mut ImageBuffer, palette: Palette) {
+    fn render_character_data(&self, image: &mut ImageBuffer, palette: Palette, color: Color32) {
-        let palette = self.load_palette(palette);
+        let palette = self.load_palette(palette, color);
         let chardata = self.chardata.borrow();
         for (row, pixels) in chardata.range::<u16>(0, 8 * 2048).enumerate() {
             let char_index = row / 8;
@@ -350,13 +370,13 @@ impl CharDataRenderer {
         }
     }
 
-    fn load_palette(&self, palette: Palette) -> [Color32; 4] {
+    fn load_palette(&self, palette: Palette, color: Color32) -> [Color32; 4] {
         let Some(offset) = palette.offset() else {
-            return utils::GENERIC_PALETTE.map(|p| utils::shade(p, Color32::RED));
+            return utils::GENERIC_PALETTE.map(|p| utils::shade(p, color));
         };
         let palette = self.palettes.borrow().read(offset);
         let brightnesses = self.brightness.borrow();
         let brts = brightnesses.read(0);
-        utils::palette_colors(palette, &brts, Color32::RED)
+        utils::palette_colors(palette, &brts, color)
     }
 }

src/window/vip/framebuffer.rs

@@ -6,7 +6,9 @@ use egui_extras::{Column, Size, StripBuilder, TableBuilder};
 use serde::{Deserialize, Serialize};
 
 use crate::{
+    config::{Config, SimConfig},
     emulator::SimId,
+    filesystem::Persistence,
     images::{ImageBuffer, ImageParams, ImageRenderer, ImageTextureLoader},
     memory::{MemoryClient, MemoryView},
     window::{
@@ -44,9 +46,14 @@ pub struct FrameBufferWindow {
 }
 
 impl FrameBufferWindow {
-    pub fn new(sim_id: SimId, memory: &MemoryClient, images: &ImageTextureLoader) -> Self {
+    pub fn new(
+        sim_id: SimId,
+        memory: &MemoryClient,
+        persistence: &Persistence,
+        images: &ImageTextureLoader,
+    ) -> Self {
         let state: UiData<State> = UiData::new();
-        let renderer = FrameBufferRenderer::new(sim_id, memory);
+        let renderer = FrameBufferRenderer::new(sim_id, memory, persistence);
         let params = images.add(
             sim_id,
             renderer,
@@ -55,8 +62,6 @@ impl FrameBufferWindow {
                 left: state.left,
                 right: state.right,
                 generic_palette: state.generic_palette,
-                left_color: Color32::from_rgb(0xff, 0x00, 0x00),
-                right_color: Color32::from_rgb(0x00, 0xc6, 0xf0),
             },
         );
         Self {
@@ -138,7 +143,6 @@ impl FrameBufferWindow {
             left: self.state.left,
             right: self.state.right,
             generic_palette: self.state.generic_palette,
-            ..*self.params
         });
     }
 
@@ -188,18 +192,18 @@ struct FrameBufferParams {
     left: bool,
     right: bool,
     generic_palette: bool,
-    left_color: Color32,
-    right_color: Color32,
 }
 
 struct FrameBufferRenderer {
+    config: Config<SimConfig>,
     buffers: [MemoryView; 4],
     brightness: MemoryView,
 }
 
 impl FrameBufferRenderer {
-    fn new(sim_id: SimId, memory: &MemoryClient) -> Self {
+    fn new(sim_id: SimId, memory: &MemoryClient, persistence: &Persistence) -> Self {
         Self {
+            config: SimConfig::load(persistence, sim_id),
             buffers: [
                 memory.watch(sim_id, 0x00000000, 0x6000),
                 memory.watch(sim_id, 0x00008000, 0x6000),
@@ -223,6 +227,7 @@ impl ImageRenderer<1> for FrameBufferRenderer {
     }
 
     fn render(&mut self, params: &Self::Params, images: &mut [ImageBuffer; 1]) {
+        self.config.refresh();
         let image = &mut images[0];
 
         let left_buffer = self.buffers[params.index].borrow();
@@ -230,15 +235,15 @@ impl ImageRenderer<1> for FrameBufferRenderer {
 
         let colors = if params.generic_palette {
             [
-                utils::generic_palette(params.left_color),
+                utils::generic_palette(self.config.colors[0]),
-                utils::generic_palette(params.right_color),
+                utils::generic_palette(self.config.colors[1]),
             ]
         } else {
             let brts = self.brightness.borrow().read::<[u8; 8]>(0);
             let shades = utils::parse_shades(&brts);
             [
-                shades.map(|s| utils::shade(s, params.left_color)),
+                shades.map(|s| utils::shade(s, self.config.colors[0])),
-                shades.map(|s| utils::shade(s, params.right_color)),
+                shades.map(|s| utils::shade(s, self.config.colors[1])),
             ]
         };
 

src/window/vip/object.rs

@@ -1,14 +1,16 @@
 use std::sync::Arc;
 
 use egui::{
-    Align, CentralPanel, Checkbox, Color32, ComboBox, Image, ScrollArea, Slider, TextEdit,
+    Align, CentralPanel, Checkbox, ComboBox, Image, ScrollArea, Slider, TextEdit, TextureOptions,
-    TextureOptions, Ui, ViewportBuilder,
+    Ui, ViewportBuilder,
 };
 use egui_extras::{Column, Size, StripBuilder, TableBuilder};
 use serde::{Deserialize, Serialize};
 
 use crate::{
+    config::{Config, SimConfig},
     emulator::SimId,
+    filesystem::Persistence,
     images::{ImageBuffer, ImageParams, ImageRenderer, ImageTextureLoader},
     memory::{MemoryClient, MemoryView},
     window::{
@@ -44,17 +46,20 @@ pub struct ObjectWindow {
 }
 
 impl ObjectWindow {
-    pub fn new(sim_id: SimId, memory: &Arc<MemoryClient>, images: &ImageTextureLoader) -> Self {
+    pub fn new(
+        sim_id: SimId,
+        memory: &Arc<MemoryClient>,
+        persistence: &Persistence,
+        images: &ImageTextureLoader,
+    ) -> Self {
         let state: UiData<State> = UiData::new();
-        let renderer = ObjectRenderer::new(sim_id, memory);
+        let renderer = ObjectRenderer::new(sim_id, memory, persistence);
         let params = images.add(
             sim_id,
             renderer,
             ObjectParams {
                 index: state.index,
                 generic_palette: state.generic_palette,
-                left_color: Color32::from_rgb(0xff, 0x00, 0x00),
-                right_color: Color32::from_rgb(0x00, 0xc6, 0xf0),
             },
         );
         Self {
@@ -194,7 +199,6 @@ impl ObjectWindow {
         self.params.write(ObjectParams {
             index: self.state.index,
             generic_palette: self.state.generic_palette,
-            ..*self.params
         });
     }
 
@@ -242,8 +246,6 @@ impl AppWindow for ObjectWindow {
 struct ObjectParams {
     index: usize,
     generic_palette: bool,
-    left_color: Color32,
-    right_color: Color32,
 }
 
 enum Eye {
@@ -252,6 +254,7 @@ enum Eye {
 }
 
 struct ObjectRenderer {
+    config: Config<SimConfig>,
     chardata: MemoryView,
     objects: MemoryView,
     brightness: MemoryView,
@@ -259,8 +262,9 @@ struct ObjectRenderer {
 }
 
 impl ObjectRenderer {
-    pub fn new(sim_id: SimId, memory: &MemoryClient) -> Self {
+    pub fn new(sim_id: SimId, memory: &MemoryClient, persistence: &Persistence) -> Self {
         Self {
+            config: SimConfig::load(persistence, sim_id),
             chardata: memory.watch(sim_id, 0x00078000, 0x8000),
             objects: memory.watch(sim_id, 0x0003e000, 0x2000),
             brightness: memory.watch(sim_id, 0x0005f824, 8),
@@ -302,8 +306,8 @@ impl ObjectRenderer {
         };
 
         let color = match eye {
-            Eye::Left => params.left_color,
+            Eye::Left => self.config.colors[0],
-            Eye::Right => params.right_color,
+            Eye::Right => self.config.colors[1],
         };
 
         let char = chardata.read::<[u16; 8]>(obj.data.char_index);
@@ -343,6 +347,7 @@ impl ImageRenderer<2> for ObjectRenderer {
     }
 
     fn render(&mut self, params: &Self::Params, images: &mut [ImageBuffer; 2]) {
+        self.config.refresh();
         images[0].clear();
         self.render_object(&mut images[0], params, false, Eye::Left);
         self.render_object(&mut images[0], params, false, Eye::Right);

src/window/vip/registers.rs

@@ -1,13 +1,15 @@
 use std::sync::Arc;
 
 use egui::{
-    Align, Button, CentralPanel, Checkbox, Color32, Direction, Label, Layout, ScrollArea, TextEdit,
+    Align, Button, CentralPanel, Checkbox, Direction, Label, Layout, ScrollArea, TextEdit, Ui,
-    Ui, ViewportBuilder,
+    ViewportBuilder,
 };
 use egui_extras::{Column, Size, StripBuilder, TableBuilder};
 
 use crate::{
+    config::{Config, SimConfig},
     emulator::SimId,
+    filesystem::Persistence,
     memory::{MemoryClient, MemoryRef, MemoryValue, MemoryView},
     window::{
         AppWindow,
@@ -19,14 +21,16 @@ use super::utils;
 
 pub struct RegisterWindow {
     sim_id: SimId,
+    config: Config<SimConfig>,
     memory: Arc<MemoryClient>,
     registers: MemoryView,
 }
 
 impl RegisterWindow {
-    pub fn new(sim_id: SimId, memory: &Arc<MemoryClient>) -> Self {
+    pub fn new(sim_id: SimId, memory: &Arc<MemoryClient>, persistence: &Persistence) -> Self {
         Self {
             sim_id,
+            config: SimConfig::load(persistence, sim_id),
             memory: memory.clone(),
             registers: memory.watch(sim_id, 0x0005f800, 0x72),
         }
@@ -366,7 +370,7 @@ impl RegisterWindow {
                     });
                     body.row(row_height, |mut row| {
                         row.col(|_ui| {});
-                        for shade in utils::parse_brts(&brts, Color32::RED) {
+                        for shade in utils::parse_brts(&brts, self.config.colors[0]) {
                             row.col(|ui| {
                                 ui.painter().rect_filled(
                                     ui.available_rect_before_wrap(),
@@ -641,6 +645,7 @@ impl AppWindow for RegisterWindow {
     }
 
     fn show(&mut self, ui: &mut Ui) {
+        self.config.refresh();
         CentralPanel::default().show(ui, |ui| {
             ScrollArea::vertical().show(ui, |ui| {
                 ui.horizontal_top(|ui| {

src/window/vip/world.rs

@@ -14,7 +14,9 @@ use num_traits::{FromPrimitive, ToPrimitive};
 use serde::{Deserialize, Serialize};
 
 use crate::{
+    config::{Config, SimConfig},
     emulator::SimId,
+    filesystem::Persistence,
     images::{ImageBuffer, ImageParams, ImageRenderer, ImageTextureLoader},
     memory::{MemoryClient, MemoryRef, MemoryView},
     window::{
@@ -47,6 +49,7 @@ impl Default for State {
 
 pub struct WorldWindow {
     sim_id: SimId,
+    config: Config<SimConfig>,
     memory: Arc<MemoryClient>,
     worlds: MemoryView,
     bgmaps: MemoryView,
@@ -55,7 +58,13 @@ pub struct WorldWindow {
 }
 
 impl WorldWindow {
-    pub fn new(sim_id: SimId, memory: &Arc<MemoryClient>, images: &ImageTextureLoader) -> Self {
+    pub fn new(
+        sim_id: SimId,
+        memory: &Arc<MemoryClient>,
+        persistence: &Persistence,
+        images: &ImageTextureLoader,
+    ) -> Self {
+        let config = SimConfig::load(persistence, sim_id);
         let state: UiData<State> = UiData::new();
         let renderer = WorldRenderer::new(sim_id, memory);
         let params = images.add(
@@ -64,12 +73,13 @@ impl WorldWindow {
             WorldParams {
                 index: state.index,
                 generic_palette: state.generic_palette,
-                left_color: Color32::from_rgb(0xff, 0x00, 0x00),
+                left_color: config.colors[0],
-                right_color: Color32::from_rgb(0x00, 0xc6, 0xf0),
+                right_color: config.colors[1],
             },
         );
         Self {
             sim_id,
+            config,
             memory: memory.clone(),
             worlds: memory.watch(sim_id, 0x0003d800, 0x400),
             bgmaps: memory.watch(sim_id, 0x00020000, 0x20000),
@@ -538,6 +548,12 @@ impl AppWindow for WorldWindow {
     }
 
     fn show(&mut self, ui: &mut Ui) {
+        self.config.refresh();
+        self.params.write(WorldParams {
+            left_color: self.config.colors[0],
+            right_color: self.config.colors[1],
+            ..*self.params
+        });
         self.state.load(ui);
         CentralPanel::default().show(ui, |ui| {
             ui.horizontal_top(|ui| {
@@ -944,7 +960,7 @@ impl WorldHeader {
         let ron = data & 0x4000 != 0;
         let mode = WorldMode::from_u16((data >> 12) & 0x3).unwrap();
         let scx = (data >> 10) as u32 & 0x03;
-        let scy = (data >> 10) as u32 & 0x03;
+        let scy = (data >> 8) as u32 & 0x03;
         let over = data & 0x0080 != 0;
         let end = data & 0x0040 != 0;
         let base = (data & 0x000f) as usize;