From a70ece33f19086dfa55560373ae5df5349820b1a Mon Sep 17 00:00:00 2001
From: themancalledjakob <jakob@jrkb.land>
Date: Tue, 2 May 2023 17:37:36 +0200
Subject: [PATCH] add letterSpacing

---
 src/gpufont/font.hpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/gpufont/font.hpp b/src/gpufont/font.hpp
index 3f32c92..731f18a 100644
--- a/src/gpufont/font.hpp
+++ b/src/gpufont/font.hpp
@@ -152,6 +152,7 @@ struct GlyphAppearance {
     uint32_t charcode;
     std::array <float, 4> color;
     float fontSize_px;
+    float letterSpacing;
 };
 }
 // create hash for GlyphIdentity, so we can use it in our unordered_map as key
@@ -1157,7 +1158,7 @@ class Font {
                 if(glyphIdentity.charcode == '\0'){
                     break;
                 }
-                float letterFontSize_px = glyphAppearance.fontSize_px;         // can be individual
+                float letterFontSize_px = glyphAppearance.fontSize_px;
                 const uint32_t & charcode = glyphIdentity.charcode;
 
                 if(charcode == '\r'){
@@ -1186,10 +1187,14 @@ class Font {
                     FT_Vector kerning;
                     FT_Error error = FT_Get_Kerning(face, previous, glyph.index, kerningMode, &kerning);
                     if(!error){
-                        advanceX += ((float)kerning.x * letterFontSize_px) / emSize * worldSize;
+                        advanceX += (((float)kerning.x * letterFontSize_px)) / emSize * worldSize;
+                        cout << "WHAT IS THIS EVEN HAPPYNG";
                     }
                 }
 
+                float letterSpacing = advanceX == 0 ? 0 : glyphAppearance.letterSpacing;
+                advanceX += (letterSpacing * letterFontSize_px) * worldSize;
+
                 // Do not emit quad for empty glyphs (whitespace).
                 if(glyph.curveCount){
                     FT_Pos d = (FT_Pos)(emSize * dilation);