Commit: 4dc0c923fb7f5c9c6f36ce0a63c1d19f241befa2
Author: Clément Foucault
Date: Sat Mar 31 16:12:00 2018 +0200
Branches: blender2.8
https://developer.blender.org/rB4dc0c923fb7f5c9c6f36ce0a63c1d19f241befa2
BLF: Perf: Do not call FT_Set_Char_Size every time.
Using FT_Set_Char_Size is slow. Calling it only when needed is more clever.
===================================================================
M source/blender/blenfont/intern/blf_font.c
===================================================================
diff --git a/source/blender/blenfont/intern/blf_font.c
b/source/blender/blenfont/intern/blf_font.c
index 2c900e897ce..b029fbe5eeb 100644
--- a/source/blender/blenfont/intern/blf_font.c
+++ b/source/blender/blenfont/intern/blf_font.c
@@ -235,6 +235,14 @@ void blf_font_size(FontBLF *font, unsigned int size,
unsigned int dpi)
GlyphCacheBLF *gc;
FT_Error err;
+ gc = blf_glyph_cache_find(font, size, dpi);
+ if (gc) {
+ font->glyph_cache = gc;
+ /* Optimization: do not call FT_Set_Char_Size if size did not
change. */
+ if (font->size == size && font->dpi == dpi)
+ return;
+ }
+
err = FT_Set_Char_Size(font->face, 0, (FT_F26Dot6)(size * 64), dpi,
dpi);
if (err) {
/* FIXME: here we can go through the fixed size and choice a
close one */
@@ -245,10 +253,7 @@ void blf_font_size(FontBLF *font, unsigned int size,
unsigned int dpi)
font->size = size;
font->dpi = dpi;
- gc = blf_glyph_cache_find(font, size, dpi);
- if (gc)
- font->glyph_cache = gc;
- else {
+ if (!gc) {
gc = blf_glyph_cache_new(font);
if (gc)
font->glyph_cache = gc;
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