From 2be58ca79d5fe59c74ff7b38d9455149cd286cc5 Mon Sep 17 00:00:00 2001
From: Pedro Sland <pedro_sland@hotmail.com>
Date: Tue, 2 Dec 2025 23:23:21 +0000
Subject: [PATCH] Fix unreadable overlay elements in 3D view on XWayland/Intel
 - closes #10287

---
 src/slic3r/GUI/ImGuiWrapper.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/slic3r/GUI/ImGuiWrapper.cpp b/src/slic3r/GUI/ImGuiWrapper.cpp
index a0cdc558b2..36150fa9f8 100644
--- a/src/slic3r/GUI/ImGuiWrapper.cpp
+++ b/src/slic3r/GUI/ImGuiWrapper.cpp
@@ -2720,6 +2720,10 @@ void ImGuiWrapper::init_font(bool compress)
     builder.BuildRanges(&ranges); // Build the final result (ordered ranges with all the unique characters submitted)
 
     io.Fonts->Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight;
+    // Limit texture height to avoid exceeding GL_MAX_TEXTURE_SIZE
+    // Make the atlas wider to keep it shorter (height limit might be 16384 on XWayland)
+    io.Fonts->TexDesiredWidth = 8192;
+
     ImFontConfig cfg = ImFontConfig();
     cfg.OversampleH = cfg.OversampleV = 1;
     //FIXME replace with io.Fonts->AddFontFromMemoryTTF(buf_decompressed_data, (int)buf_decompressed_size, m_font_size, nullptr, ranges.Data);