From 3b2a07c264ee4052a56b6c306d38da47dc1e3968 Mon Sep 17 00:00:00 2001
From: Alex Janka <alex@alexjanka.com>
Date: Wed, 8 Feb 2023 09:20:57 +1100
Subject: [PATCH] if bg/window disabled clear with white

---
 src/processor/gpu.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/processor/gpu.rs b/src/processor/gpu.rs
index 61eb6a7..045df97 100644
--- a/src/processor/gpu.rs
+++ b/src/processor/gpu.rs
@@ -289,6 +289,11 @@ impl CPU {
             if lcdc.window_enable {
                 self.render_scanline_window(scanline, lcdc, palette);
             }
+        } else {
+            for x in 0..WIDTH {
+                self.gpu.buffer[(scanline as usize * WIDTH) + x] =
+                    Colour::from_u8_rgb(255, 255, 255);
+            }
         }
         if lcdc.obj_enable {
             self.render_scanline_obj(scanline, lcdc);