Start renderer after screen activation

build/client-renderer/src/client/java/dev/github/copilot/renameable/RenderCatalogClient.java

@@ -15,7 +15,6 @@ import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import net.fabricmc.api.ClientModInitializer;
-import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.Screenshot;
 import net.minecraft.client.gui.GuiGraphicsExtractor;
@@ -36,8 +35,6 @@ public final class RenderCatalogClient implements ClientModInitializer {
     private Path outputDir;
     private int currentJobIndex;
     private RenderScreen renderScreen;
-    private int renderScreenDelayTicks = 60;
-    private boolean renderStarted;
 
     @Override
     public void onInitializeClient() {
@@ -63,21 +60,36 @@ public final class RenderCatalogClient implements ClientModInitializer {
         Minecraft client = Minecraft.getInstance();
         renderScreen = new RenderScreen();
 
-        ClientTickEvents.END_CLIENT_TICK.register(tickedClient -> {
-            if (renderScreenDelayTicks > 0) {
-                renderScreenDelayTicks--;
-                if (renderScreenDelayTicks == 0) {
+        client.execute(() -> {
             System.out.println("[renderer] opening render screen");
-                    tickedClient.setScreenAndShow(renderScreen);
+            client.setScreenAndShow(renderScreen);
+        });
+
+        Thread renderStarter = new Thread(() -> {
+            long deadline = System.currentTimeMillis() + SCREEN_ACTIVATION_TIMEOUT_MILLIS;
+
+            while (System.currentTimeMillis() < deadline) {
+                if (renderScreen.activated) {
+                    client.execute(() -> {
+                        System.out.println("[renderer] starting render loop after screen activation");
+                        renderCurrentJob(client, renderScreen);
+                    });
+                    return;
+                }
+
+                try {
+                    Thread.sleep(100L);
+                } catch (InterruptedException exception) {
+                    Thread.currentThread().interrupt();
+                    return;
                 }
             }
 
-            if (!renderStarted && tickedClient.screen == renderScreen) {
-                renderStarted = true;
-                System.out.println("[renderer] starting render loop from client tick");
-                renderCurrentJob(tickedClient, renderScreen);
-            }
-        });
+            System.err.println("[renderer] render screen never activated within " + SCREEN_ACTIVATION_TIMEOUT_MILLIS + "ms");
+            Runtime.getRuntime().halt(1);
+        }, "renderer-startup-watchdog");
+        renderStarter.setDaemon(true);
+        renderStarter.start();
 
         Thread activationWatchdog = new Thread(() -> {
             try {