From d317af4b6c7c1ee98bec47493b2bf9940d63b4ca Mon Sep 17 00:00:00 2001
From: Jonathan Behrens <fintelia@gmail.com>
Date: Sun, 24 Dec 2023 10:40:04 -0800
Subject: [PATCH] Fix indexing issue

---
 src/extended.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/extended.rs b/src/extended.rs
index 44dafc9..4639836 100644
--- a/src/extended.rs
+++ b/src/extended.rs
@@ -87,10 +87,10 @@ pub(crate) fn composite_frame(
         }
     } else if frame_has_alpha {
         for y in 0..height {
-            let frame_index = (y * frame_width as usize) * 3;
+            let frame_index = (y * frame_width as usize) * 4;
             let canvas_index = (y + frame_offset_y as usize) * canvas_width as usize * 4;
 
-            canvas[canvas_index..][..width * 4].copy_from_slice(&frame[frame_index..][..width * 3]);
+            canvas[canvas_index..][..width * 4].copy_from_slice(&frame[frame_index..][..width * 4]);
         }
     } else {
         for y in 0..height {