From 6ec7c0c701e17bd3737d976d86bdb39cf7192ed7 Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Sun, 19 Jan 2025 08:03:09 +0100
Subject: [PATCH] add workaround for CreateDIBSection offset bug

---
 src/ddsurface.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ddsurface.c b/src/ddsurface.c
index c6d3350..e52b3fb 100644
--- a/src/ddsurface.c
+++ b/src/ddsurface.c
@@ -1553,7 +1553,7 @@ HRESULT dd_CreateSurface(
             if (dst_surface->hdc)
                 InterlockedIncrement(&g_dds_gdi_handles);
 
-            DWORD map_offset = dst_surface->pitch * g_config.guard_lines;
+            DWORD map_offset = 65280; // CreateDIBSection cannot handle values higher than a WORD - 0xFF00 (guard lines);
 
             dst_surface->mapping =
                 CreateFileMappingA(