FontManager: text rendering quality improvements by ensuring fonts ar…

…e aligned to pixel grid, avoiding fractional line heights and excessive resampling
ngscopeclient · Sep 8, 2023 · b5677d0 · b5677d0
1 parent 86da563
commit b5677d0
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Showing 2 changed files with 5 additions and 2 deletions.
diff --git a/lib b/lib
diff --git a/src/ngscopeclient/FontManager.cpp b/src/ngscopeclient/FontManager.cpp
@@ -97,8 +97,11 @@ bool FontManager::UpdateFonts(PreferenceCategory& root, float contentScale)
 	builder.BuildRanges(&ranges);
 
 	//Load the fonts
+	ImFontConfig config;
+	config.PixelSnapH = true;
+	config.OversampleH = 1;
 	for(auto f : fonts)
-		m_fonts[f] = atlas->AddFontFromFileTTF(f.first.c_str(), f.second * contentScale, nullptr, ranges.Data);
+		m_fonts[f] = atlas->AddFontFromFileTTF(f.first.c_str(), round(f.second * contentScale), &config, ranges.Data);
 
 	//Done loading fonts, build the texture
 	atlas->Flags = ImFontAtlasFlags_NoMouseCursors;