fixed panorama

src/main/java/org/saturnclient/ui2/SaturnScreen.java

@@ -8,7 +8,9 @@ import org.saturnclient.saturnclient.mixin.DrawContextAccessor;
 import org.saturnclient.ui2.anim.Animation;
 
 import net.minecraft.client.gl.PostEffectProcessor;
+import net.minecraft.client.gui.CubeMapRenderer;
 import net.minecraft.client.gui.DrawContext;
+import net.minecraft.client.gui.RotatingCubeMapRenderer;
 import net.minecraft.client.gui.screen.Screen;
 import net.minecraft.client.render.DefaultFramebufferSet;
 import net.minecraft.client.util.Pool;
@@ -21,6 +23,15 @@ public class SaturnScreen extends Screen {
     public int blurDuration = 700;
     public float blurProgress = 0.0f;
 
+    protected static final CubeMapRenderer PANORAMA_RENDERER = new CubeMapRenderer(
+            Identifier.of("saturnclient", "textures/gui/title/background/panorama"));
+
+    public static final RotatingCubeMapRenderer ROTATING_PANORAMA_RENDERER;
+
+    static {
+        ROTATING_PANORAMA_RENDERER = new RotatingCubeMapRenderer(PANORAMA_RENDERER);
+    }
+
     public SaturnScreen(String title) {
         super(Text.literal(title));
         ThemeManager.load();
@@ -72,6 +83,10 @@ public class SaturnScreen extends Screen {
         mouseX *= 2;
         mouseY *= 2;
 
+        if (client.world == null && client.getCurrentServerEntry() == null) {
+            ROTATING_PANORAMA_RENDERER.render(context, this.width, this.height, 1.0F, delta);
+        }
+
         PostEffectProcessor postEffectProcessor = this.client.getShaderLoader().loadPostEffect(
                     Identifier.ofVanilla("blur"),
                     DefaultFramebufferSet.MAIN_ONLY);