From ec5242a1a0c1e90219944bdc677b168fe2be5b21 Mon Sep 17 00:00:00 2001
From: vengine <xhnasdeveloper@gmail.com>
Date: Thu, 23 May 2024 03:20:22 +0800
Subject: [PATCH] Fix a bug that could cause assertion failure. (#5575)

Co-authored-by: macmini <xhnsworks2@icloud.com>
Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>
---
 code/Common/Bitmap.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/code/Common/Bitmap.cpp b/code/Common/Bitmap.cpp
index 246ad9e651..e6732c528d 100644
--- a/code/Common/Bitmap.cpp
+++ b/code/Common/Bitmap.cpp
@@ -148,8 +148,10 @@ void Bitmap::WriteData(aiTexture *texture, IOStream *file) {
 
             file->Write(pixel, mBytesPerPixel, 1);
         }
-
-        file->Write(padding_data, padding, 1);
+        // When padding is 0, passing it as an argument will cause an assertion failure in DefaultIOStream::Write.
+        if (padding) {
+            file->Write(padding_data, padding, 1);
+        }
     }
 }