From 3cfdc43a4f4b4445f56a10f665b2c0b6ff47991b Mon Sep 17 00:00:00 2001
From: Lukas Krickl <lukas@krickl.dev>
Date: Tue, 1 Oct 2024 15:43:08 +0200
Subject: [PATCH] video: waiting for vblank now before starting first frame

---
 src/main.s  | 4 ++--
 src/video.s | 9 +++++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/main.s b/src/main.s
index d48f2ff..5661aed 100644
--- a/src/main.s
+++ b/src/main.s
@@ -14,10 +14,10 @@ entry:
   call mem_init 
 
   call lcd_off
-  call copy_tiles
+  call video_init
   call lcd_on
+  call vblank_wait
 
-  call video_init
 
   call enableinterrupts
 
diff --git a/src/video.s b/src/video.s
index d5a2cdb..7b2144c 100644
--- a/src/video.s
+++ b/src/video.s
@@ -28,10 +28,19 @@ lcd_off:
 lcd_on:
   ld a, LCDCF_ON | LCDCF_BGON | LCDCF_OBJON 
   ld [RLCD], a
+  call vblank_wait
 
   ret
 
 video_init:
+  call copy_tiles
+
+  ld hl, SCRN0
+  ld bc, 1024
+  ld d, 0
+  call memset
+  
+  ; set up bgp
   ld a, 0b11100100
   ld [RBGP], a
   ret
-- 
2.30.2