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render: cache generated glyphs for regular ASCII characters

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To avoid having to re-generate glyphs, cache the glyphs.

For now, we only cache ASCII characters, as this allows us to lookup
the cache by simply indexing with the character (into a 256-entry
array).
This commit is contained in:
Daniel Eklöf 2019-07-18 10:33:58 +02:00
parent c9803a2018
commit 6e55be1557
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GPG key ID: 5BBD4992C116573F
4 changed files with 47 additions and 8 deletions
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7
terminal.h
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@ -202,6 +202,11 @@ struct primary {
uint32_t serial;
};
struct glyph_cache {
cairo_glyph_t *glyphs;
int count;
};
struct font {
cairo_scaled_font_t *font;
struct {
@ -212,6 +217,8 @@ struct font {
double position;
double thickness;
} strikeout;
struct glyph_cache glyph_cache[256];
};
struct terminal {