From d83070b66e5a07af0b1be68878c4296a1bc5bf18 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Wed, 18 Feb 2026 16:12:32 +0100
Subject: fix: initialize the rectangle correctly

---
 src/main.S | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/main.S b/src/main.S
index 9069c8a..2b5bc66 100644
--- a/src/main.S
+++ b/src/main.S
@@ -87,19 +87,20 @@
     xor %rax, %rax
     call printf@PLT
 
+    // initialize a simple square, located at the screen's center
     mov $(SCREEN_HEIGHT / 2), %r8
     mov $(SCREEN_WIDTH / 2), %r9
 
     address_of_local rect, %rdi
-    mov %r8, OFFSET_SDL_Rect_w(%rdi)
-    mov %r8, OFFSET_SDL_Rect_h(%rdi)
+    mov %r8d, OFFSET_SDL_Rect_w(%rdi)
+    mov %r8d, OFFSET_SDL_Rect_h(%rdi)
     mov %r9, %r10
     shr $1, %r9
     sub %r9, %r10
-    mov %r10, OFFSET_SDL_Rect_x(%rdi)
+    mov %r10d, OFFSET_SDL_Rect_x(%rdi)
     mov %r8, %r10
     sub %r9, %r10
-    mov %r10, OFFSET_SDL_Rect_y(%rdi)
+    mov %r10d, OFFSET_SDL_Rect_y(%rdi)
 
   .Ldestroy_renderer:
     // destroy the renderer
-- 
cgit v1.2.3