From 21ce6c9f4e23d6f0347fbf62b22a4a91dd7c7195 Mon Sep 17 00:00:00 2001
From: Saurtron <saurtron@riseup.net>
Date: Mon, 9 Dec 2024 09:33:19 +0100
Subject: [PATCH] Don't preload glyphs for non-alphanumeric fonts.

---
 rts/Rendering/Fonts/CFontTexture.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rts/Rendering/Fonts/CFontTexture.cpp b/rts/Rendering/Fonts/CFontTexture.cpp
index 33f7cbce7d..6476f97a7c 100644
--- a/rts/Rendering/Fonts/CFontTexture.cpp
+++ b/rts/Rendering/Fonts/CFontTexture.cpp
@@ -606,6 +606,9 @@ CFontTexture::CFontTexture(const std::string& fontfile, int size, int _outlinesi
 	// precache ASCII glyphs & kernings (save them in kerningPrecached array for better lvl2 cpu cache hitrate)
 
 	//preload Glyphs
+	// if given face doesn't contain alphanumerics, don't preload it
+	if (!FT_Get_Char_Index(face, 'a'))
+		return;
 	LoadWantedGlyphs(32, 127);
 	for (char32_t i = 32; i < 127; ++i) {
 		const auto& lgl = GetGlyph(i);