Merge pull request #3135 from l2-/loginscreenbackground

runelite-api/src/main/java/net/runelite/api/Client.java

@@ -2270,6 +2270,16 @@ public interface Client extends GameEngine
 	 */
 	void setLoginScreen(SpritePixels pixels);
 
+	/**
+	 * Low level control over the login screen background.
+	 * Useful when changing the login screen background every frame, for example for playing a video.
+	 * A typical update cycle would be:
+	 * 1. setLoginScreenBackground(pixels) 2. setLoginScreenLeftTitleSprite() 3. setLoginScreenRightTitleSprite()
+	 */
+	void setLoginScreenBackground(SpritePixels pixels);
+	void setLoginScreenLeftTitleSprite();
+	void setLoginScreenRightTitleSprite();
+
 	/**
 	 * Sets whether the flames on the login screen should be rendered
 	 */

runelite-mixins/src/main/java/net/runelite/mixins/LoginScreenMixin.java

@@ -76,6 +76,26 @@ public abstract class LoginScreenMixin implements RSClient
 		}
 	}
 
+	@Inject
+	public void setLoginScreenBackground(SpritePixels background)
+	{
+		assert client.isClientThread() : "setLoginScreen must be called on client thread";
+		loginScreenBackground = background;
+		client.clearLoginScreen(false);
+	}
+
+	@Inject
+	public void setLoginScreenLeftTitleSprite()
+	{
+		setLeftTitleSprite(0);
+	}
+
+	@Inject
+	public void setLoginScreenRightTitleSprite()
+	{
+		setRightTitleSprite(0);
+	}
+
 	@Inject
 	@FieldHook("leftTitleSprite")
 	static void setLeftTitleSprite(int idx)