From 77a38ae87d56df946112b52e3ecf50a1ca401fa7 Mon Sep 17 00:00:00 2001
From: Hugh Sanderson <gamehaxe@gmail.com>
Date: Tue, 16 Apr 2024 13:09:07 +0800
Subject: [PATCH] Allow for odd stride when rotating Jpg images

---
 project/src/common/SurfaceIO.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/project/src/common/SurfaceIO.cpp b/project/src/common/SurfaceIO.cpp
index 4ee3bbafe..98fe91f45 100644
--- a/project/src/common/SurfaceIO.cpp
+++ b/project/src/common/SurfaceIO.cpp
@@ -355,6 +355,7 @@ static Surface *TryJPEG(FILE *inFile,const uint8 *inData, int inDataLen, IAppDat
 
    RenderTarget target = result->BeginRender(Rect(imageW, imageH));
 
+   int strideBytes = target.Row(1)-target.Row(0);
 
    while (cinfo.output_scanline < cinfo.output_height)
    {
@@ -369,7 +370,7 @@ static Surface *TryJPEG(FILE *inFile,const uint8 *inData, int inDataLen, IAppDat
          for(int x=0; x<imageH; x++)
          {
             *col = rowBuf[x];
-            col += imageW;
+            col = (RGB *)((char *)col + strideBytes);
          }
       }
       else if (rotation==2)
@@ -386,7 +387,7 @@ static Surface *TryJPEG(FILE *inFile,const uint8 *inData, int inDataLen, IAppDat
          for(int x=0; x<imageH; x++)
          {
             *col = rowBuf[x];
-            col -= imageW;
+            col = (RGB *)((char *)col - strideBytes);
          }
       }