////////////////////////////////
//~ Font types

Struct(F_Glyph)
{
    f32 off_x;
    f32 off_y;
    f32 width;
    f32 height;
    i32 advance;
    Rect atlas_rect;
};

Struct(F_Font)
{
    GPU_Resource *texture;
    u32 image_width;
    u32 image_height;
    f32 point_size;
    u16 glyphs_count;
    F_Glyph *glyphs;
    u16 *lookup;
};

////////////////////////////////
//~ Font job types

Struct(F_LoadJobSig)
{
    F_LoadJobSig *next_free;

    AC_Asset *asset;
    f32 point_size;
    u64 path_len;
    char path_cstr[1024];
};

Struct(F_LoadJobSigStore)
{
    F_LoadJobSig *head_free;
    Arena *arena;
    P_Mutex mutex;
};

////////////////////////////////
//~ Shared state

#define F_LookupTableSize (256)

Struct(F_SharedState)
{
    F_LoadJobSigStore params;
};

extern F_SharedState F_shared_state;

////////////////////////////////
//~ Startup

Struct(F_StartupReceipt) { i32 _; };
F_StartupReceipt F_Startup(AC_StartupReceipt *asset_cache_sr, TTF_StartupReceipt *ttf_sr);

////////////////////////////////
//~ Font load job

F_LoadJobSig *F_AllocJobSig(void);
void F_ReleaseJobSig(F_LoadJobSig *p);
P_JobDef(F_LoadAssetJob, job);

////////////////////////////////
//~ Font load operations

AC_Asset *F_LoadAsset(String path, f32 point_size, b32 wait);
F_Font *F_LoadFontAsync(String path, f32 point_size);
F_Font *F_LoadFontWait(String path, f32 point_size);

////////////////////////////////
//~ Font data operations

F_Glyph *F_GetGlyph(F_Font *font, u32 codepoint);