Render images on background thread to keep UI responsive

src/app.rs

@@ -20,6 +20,7 @@ use crate::{
     input::MappingProvider,
     memory::MemoryMonitor,
     persistence::Persistence,
+    vram::VramProcessor,
     window::{
         AboutWindow, AppWindow, BgMapWindow, CharacterDataWindow, GameWindow, GdbServerWindow,
         InputWindow,
@@ -45,6 +46,7 @@ pub struct Application {
     mappings: MappingProvider,
     controllers: ControllerManager,
     memory: MemoryMonitor,
+    vram: VramProcessor,
     persistence: Persistence,
     viewports: HashMap<ViewportId, Viewport>,
     focused: Option<ViewportId>,
@@ -63,6 +65,7 @@ impl Application {
         let mappings = MappingProvider::new(persistence.clone());
         let controllers = ControllerManager::new(client.clone(), &mappings);
         let memory = MemoryMonitor::new(client.clone());
+        let vram = VramProcessor::new();
         {
             let mappings = mappings.clone();
             let proxy = proxy.clone();
@@ -75,6 +78,7 @@ impl Application {
             proxy,
             mappings,
             memory,
+            vram,
             controllers,
             persistence,
             viewports: HashMap::new(),
@@ -205,11 +209,11 @@ impl ApplicationHandler<UserEvent> for Application {
                 self.open(event_loop, Box::new(about));
             }
             UserEvent::OpenCharacterData(sim_id) => {
-                let vram = CharacterDataWindow::new(sim_id, &mut self.memory);
+                let vram = CharacterDataWindow::new(sim_id, &mut self.memory, &mut self.vram);
                 self.open(event_loop, Box::new(vram));
             }
             UserEvent::OpenBgMap(sim_id) => {
-                let bgmap = BgMapWindow::new(sim_id, &mut self.memory);
+                let bgmap = BgMapWindow::new(sim_id, &mut self.memory, &mut self.vram);
                 self.open(event_loop, Box::new(bgmap));
             }
             UserEvent::OpenDebugger(sim_id) => {