eric/Crosspoint
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Avoid OOM during prewarm by loading only ligature data, not kern pairs

Browse Source 
This is particularly important when using SD fonts with many kern pairs
This commit is contained in:
spfenwick
2026-05-02 15:54:40 +12:00
parent 376350c61d
commit 913b7e5f8b
2 changed files with 42 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/EpdFont/SdCardFont.h
+3 -2
View File
@@ -118,7 +118,8 @@ class SdCardFont {
EpdKernClassEntry* kernLeftClasses = nullptr;
EpdKernClassEntry* kernRightClasses = nullptr;
EpdLigaturePair* ligaturePairs = nullptr;
bool kernLigLoaded = false;
bool ligLoaded = false; ///< ligaturePairs resident
bool kernClassesLoaded = false; ///< kernLeft/RightClasses resident (skipped during metadata-only prewarm)
// Stub EpdFontData returned when not prewarmed
EpdFontData stubData{};
@@ -204,7 +205,7 @@ class SdCardFont {
void freeStyleAll(PerStyle& s);
void freeStyleKernLigatureData(PerStyle& s);
void freeStyleMiniKern(PerStyle& s);
bool loadStyleKernLigatureData(PerStyle& s);
bool loadStyleKernLigatureData(PerStyle& s, bool ligatureOnly = false);
bool buildMiniKernMatrix(PerStyle& s, const uint32_t* codepoints, uint32_t cpCount);
void applyKernLigaturePointers(const PerStyle& s, EpdFontData& data) const;
void applyGlyphMissCallback(uint8_t styleIdx);