From f2af2fbe761ae6f7fb72e1cc5d5f955c13a6f89b Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Sat, 12 Aug 2023 00:16:06 -0500
Subject: [PATCH] GUI: fix crash on big endian

I hope
issue #649
---
 extern/imgui_patched/imgui_draw.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/extern/imgui_patched/imgui_draw.cpp b/extern/imgui_patched/imgui_draw.cpp
index db56f7e3c..6e39f4d0d 100644
--- a/extern/imgui_patched/imgui_draw.cpp
+++ b/extern/imgui_patched/imgui_draw.cpp
@@ -2224,10 +2224,22 @@ ImFont* ImFontAtlas::AddFontFromMemoryTTF(void* ttf_data, int ttf_size, float si
 
 ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* compressed_ttf_data, int compressed_ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
 {
+    // workaround for big-endian
+#ifdef TA_BIG_ENDIAN
+    unsigned char* beData=(unsigned char*)IM_ALLOC(compressed_ttf_size);
+    for (int i=0; i<compressed_ttf_size; i++) {
+      beData[i]=compressed_ttf_data[i^3];
+    }
+    compressed_ttf_data=beData;
+#endif
     const unsigned int buf_decompressed_size = stb_decompress_length((const unsigned char*)compressed_ttf_data);
     unsigned char* buf_decompressed_data = (unsigned char*)IM_ALLOC(buf_decompressed_size);
     stb_decompress(buf_decompressed_data, (const unsigned char*)compressed_ttf_data, (unsigned int)compressed_ttf_size);
 
+#ifdef TA_BIG_ENDIAN
+    IM_FREE(beData);
+#endif
+
     ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
     IM_ASSERT(font_cfg.FontData == NULL);
     font_cfg.FontDataOwnedByAtlas = true;