shithub: cstory

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More-efficient way of determining atlas size

--- a/src/Font.cpp

+++ b/src/Font.cpp

@@ -1081,7 +1081,7 @@

 					size_t atlas_entry_height = FT_MulFix(font->face->bbox.yMax - font->face->bbox.yMin + 1, font->face->size->metrics.y_scale) / 64;

 					size_t atlas_columns = ceil(sqrt(atlas_entry_width * atlas_entry_height * TOTAL_GLYPH_SLOTS) / atlas_entry_width);

-					size_t atlas_rows = ceil(sqrt(atlas_entry_width * atlas_entry_height * TOTAL_GLYPH_SLOTS) / atlas_entry_height);

+					size_t atlas_rows = (TOTAL_GLYPH_SLOTS + (atlas_columns - 1)) / atlas_columns;

 					font->atlas_row_length = atlas_columns;