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font cache: add additional layer of caching for runs

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This commit is contained in:
Ryan Fleury
2025-04-25 09:45:43 -07:00
parent e0ba1155e8
commit 7dc920c14f
3 changed files with 390 additions and 302 deletions
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src/font_cache/font_cache.h
+43 -13
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@@ -93,8 +93,10 @@ struct FNT_FontHashSlot
////////////////////////////////
//~ rjf: Rasterization Cache Types
typedef struct F_RasterCacheInfo F_RasterCacheInfo;
struct F_RasterCacheInfo
//- rjf: base glyph rasterization / dimensions cache
typedef struct FNT_RasterCacheInfo FNT_RasterCacheInfo;
struct FNT_RasterCacheInfo
{
Rng2S16 subrect;
Vec2S16 raster_dim;
@@ -102,22 +104,41 @@ struct F_RasterCacheInfo
F32 advance;
};
typedef struct F_Hash2InfoRasterCacheNode F_Hash2InfoRasterCacheNode;
struct F_Hash2InfoRasterCacheNode
typedef struct FNT_Hash2InfoRasterCacheNode FNT_Hash2InfoRasterCacheNode;
struct FNT_Hash2InfoRasterCacheNode
{
F_Hash2InfoRasterCacheNode *hash_next;
F_Hash2InfoRasterCacheNode *hash_prev;
FNT_Hash2InfoRasterCacheNode *hash_next;
FNT_Hash2InfoRasterCacheNode *hash_prev;
U64 hash;
F_RasterCacheInfo info;
FNT_RasterCacheInfo info;
};
typedef struct FNT_Hash2InfoRasterCacheSlot FNT_Hash2InfoRasterCacheSlot;
struct FNT_Hash2InfoRasterCacheSlot
{
F_Hash2InfoRasterCacheNode *first;
F_Hash2InfoRasterCacheNode *last;
FNT_Hash2InfoRasterCacheNode *first;
FNT_Hash2InfoRasterCacheNode *last;
};
//- rjf: run cache (arrangements of many glyphs to represent a full string)
typedef struct FNT_RunCacheNode FNT_RunCacheNode;
struct FNT_RunCacheNode
{
FNT_RunCacheNode *next;
String8 string;
FNT_Run run;
};
typedef struct FNT_RunCacheSlot FNT_RunCacheSlot;
struct FNT_RunCacheSlot
{
FNT_RunCacheNode *first;
FNT_RunCacheNode *last;
};
//- rjf: style hash -> artifacts/metrics cache
typedef struct FNT_Hash2StyleRasterCacheNode FNT_Hash2StyleRasterCacheNode;
struct FNT_Hash2StyleRasterCacheNode
{
@@ -127,10 +148,13 @@ struct FNT_Hash2StyleRasterCacheNode
F32 ascent;
F32 descent;
F32 column_width;
F_RasterCacheInfo *utf8_class1_direct_map;
FNT_RasterCacheInfo *utf8_class1_direct_map;
U64 utf8_class1_direct_map_mask[4];
U64 hash2info_slots_count;
FNT_Hash2InfoRasterCacheSlot *hash2info_slots;
U64 run_slots_count;
FNT_RunCacheSlot *run_slots;
U64 run_slots_frame_index;
};
typedef struct FNT_Hash2StyleRasterCacheSlot FNT_Hash2StyleRasterCacheSlot;
@@ -189,6 +213,8 @@ struct FNT_State
{
Arena *permanent_arena;
Arena *raster_arena;
Arena *frame_arena;
U64 frame_index;
// rjf: font table
U64 font_hash_table_size;
@@ -206,13 +232,13 @@ struct FNT_State
////////////////////////////////
//~ rjf: Globals
global FNT_State *f_state = 0;
global FNT_State *fnt_state = 0;
////////////////////////////////
//~ rjf: Basic Functions
internal U128 fnt_hash_from_string(String8 string);
internal U64 fnt_little_hash_from_string(String8 string);
internal U64 fnt_little_hash_from_string(U64 seed, String8 string);
internal Vec2S32 fnt_vertex_from_corner(Corner corner);
////////////////////////////////
@@ -241,10 +267,13 @@ internal FNT_PieceArray fnt_piece_array_from_chunk_list(Arena *arena, FNT_PieceC
internal FNT_PieceArray fnt_piece_array_copy(Arena *arena, FNT_PieceArray *src);
////////////////////////////////
//~ rjf: Rasterization Cache
//~ rjf: Cache Usage
//- rjf: base cache lookups
internal FNT_Hash2StyleRasterCacheNode *fnt_hash2style_from_tag_size_flags(FNT_Tag tag, F32 size, FNT_RasterFlags flags);
internal FNT_Run fnt_push_run_from_string(Arena *arena, FNT_Tag tag, F32 size, F32 base_align_px, F32 tab_size_px, FNT_RasterFlags flags, String8 string);
//- rjf: helpers
internal String8List fnt_wrapped_string_lines_from_font_size_string_max(Arena *arena, FNT_Tag font, F32 size, F32 base_align_px, F32 tab_size_px, String8 string, F32 max);
internal Vec2F32 fnt_dim_from_tag_size_string(FNT_Tag tag, F32 size, F32 base_align_px, F32 tab_size_px, String8 string);
internal Vec2F32 fnt_dim_from_tag_size_string_list(FNT_Tag tag, F32 size, F32 base_align_px, F32 tab_size_px, String8List list);
@@ -262,5 +291,6 @@ internal F32 fnt_line_height_from_metrics(FNT_Metrics *metrics);
internal void fnt_init(void);
internal void fnt_reset(void);
internal void fnt_frame(void);
#endif // FONT_CACHE_H