#include "font.h" #include "arena.h" #include "ttf.h" #include "work.h" #include "scratch.h" #include "asset_cache.h" #include "resource.h" #include "log.h" #include "string.h" #include "renderer.h" #define LOOKUP_TABLE_SIZE (256) GLOBAL u32 g_font_codes[] = { 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF }; struct font_task_params { struct font_task_params *next_free; struct asset *asset; f32 point_size; u64 path_len; char path_cstr[1024]; }; struct font_task_params_store { struct font_task_params *head_free; struct arena arena; struct sys_mutex mutex; }; /* ========================== * * Global state * ========================== */ GLOBAL struct { struct font_task_params_store params; } L = { 0 }, DEBUG_LVAR(L_font); /* ========================== * * Startup * ========================== */ struct font_startup_receipt font_startup(struct work_startup_receipt *work_sr, struct renderer_startup_receipt *renderer_sr, struct asset_cache_startup_receipt *asset_cache_sr, struct ttf_startup_receipt *ttf_sr, struct resource_startup_receipt *resource_sr) { (UNUSED)work_sr; (UNUSED)renderer_sr; (UNUSED)asset_cache_sr; (UNUSED)ttf_sr; (UNUSED)resource_sr; L.params.arena = arena_alloc(GIGABYTE(64)); L.params.mutex = sys_mutex_alloc(); return (struct font_startup_receipt) { 0 }; } /* ========================== * * Load task param store * ========================== */ INTERNAL struct font_task_params *font_task_params_alloc(void) { struct font_task_params *p = NULL; sys_mutex_lock(&L.params.mutex); { if (L.params.head_free) { p = L.params.head_free; L.params.head_free = p->next_free; } else { p = arena_push_zero(&L.params.arena, struct font_task_params); } } sys_mutex_unlock(&L.params.mutex); return p; } INTERNAL void font_task_params_release(struct font_task_params *p) { sys_mutex_lock(&L.params.mutex); { p->next_free = L.params.head_free; L.params.head_free = p; } sys_mutex_unlock(&L.params.mutex); } /* ========================== * * Load * ========================== */ INTERNAL WORK_TASK_FUNC_DEF(font_load_asset_task, vparams) { __prof; struct font_task_params *params = (struct font_task_params *)vparams; struct temp_arena scratch = scratch_begin_no_conflict(); struct string path = string_from_cstr_len(params->path_cstr, params->path_len); f32 point_size = params->point_size; struct asset *asset = params->asset; logf_info("Loading font \"%F\" (point size %F)", FMT_STR(path), FMT_FLOAT((f64)point_size)); sys_timestamp_t start_ts = sys_timestamp(); ASSERT(string_ends_with(path, STR(".ttf"))); if (!resource_exists(path)) { /* FIME: Load baked font instead of panicking */ sys_panic(string_format(scratch.arena, STR("Font \"%F\" not found"), FMT_STR(path))); } ASSERT(ARRAY_COUNT(g_font_codes) < LOOKUP_TABLE_SIZE); /* Decode */ struct resource res = resource_open(path); struct ttf_decode_result result = ttf_decode(scratch.arena, res.bytes, point_size, g_font_codes, ARRAY_COUNT(g_font_codes)); resource_close(res); /* Send texture to GPU */ struct renderer_handle texture_renderer_handle = renderer_texture_alloc(result.image_data); /* Allocate store memory */ struct font *font = NULL; { struct asset_cache_store store = asset_cache_store_open(); font = arena_push_zero(store.arena, struct font); font->glyphs = arena_push_array(store.arena, struct font_glyph, result.glyphs_count); font->lookup = arena_push_array_zero(store.arena, u16, LOOKUP_TABLE_SIZE); asset_cache_store_close(&store); } /* Set font data */ font->texture = (struct texture) { .renderer_handle = texture_renderer_handle, .size = V2(result.image_data.width, result.image_data.height), }; font->glyphs_count = result.glyphs_count; font->point_size = point_size; /* FIXME: Load baked font instead of panicking */ if (font->glyphs_count <= 0) { sys_panic(string_format(scratch.arena, STR("Parsed 0 glyphs from font \"%F\"!"), FMT_STR(path))); } /* Copy glyphs from decode result */ MEMCPY(font->glyphs, result.glyphs, sizeof(*font->glyphs) * result.glyphs_count); /* Build lookup table */ for (u64 i = 0; i < ARRAY_COUNT(g_font_codes); ++i) { u32 codepoint = g_font_codes[i]; font->lookup[codepoint] = result.cache_indices[i]; } font_task_params_release(params); logf_info("Finished loading font \"%F\" (point size %F) in %F seconds", FMT_STR(path), FMT_FLOAT((f64)point_size), FMT_FLOAT(sys_timestamp_seconds(sys_timestamp() - start_ts))); asset_cache_mark_ready(asset, font); scratch_end_and_decommit(scratch); } /* Returns the asset from the asset cache */ struct asset *font_load_asset(struct string path, f32 point_size, b32 help) { __prof; struct temp_arena scratch = scratch_begin_no_conflict(); /* Concatenate point_size to path for key */ struct string key = string_format(scratch.arena, STR("%F%F_font"), FMT_STR(path), FMT_FLOAT_P((f64)point_size, 3)); u64 hash = asset_cache_hash(key); b32 is_first_touch; struct asset *asset = asset_cache_touch(key, hash, &is_first_touch); if (is_first_touch) { /* Assemble task params */ struct font_task_params *params = font_task_params_alloc(); if (path.len > (sizeof(params->path_cstr) - 1)) { sys_panic(string_format(scratch.arena, STR("Font path \"%F\" too long!"), FMT_STR(path))); } cstr_buff_from_string(BUFFER_FROM_ARRAY(params->path_cstr), path); params->path_len = path.len; params->asset = asset; params->point_size = point_size; /* Push task */ asset_cache_mark_loading(asset); struct work_handle wh = { 0 }; if (help) { wh = work_push_task_and_help(&font_load_asset_task, params, WORK_PRIORITY_NORMAL); } else { wh = work_push_task(&font_load_asset_task, params, WORK_PRIORITY_NORMAL); } asset_cache_set_work(asset, &wh); } scratch_end(scratch); return asset; } struct font *font_load_async(struct string path, f32 point_size) { __prof; struct asset *asset = font_load_asset(path, point_size, false); struct font *f = (struct font *)asset_cache_get_store_data(asset); return f; } struct font *font_load(struct string path, f32 point_size) { __prof; struct asset *asset = font_load_asset(path, point_size, true); asset_cache_wait(asset); struct font *f = (struct font *)asset_cache_get_store_data(asset); return f; } /* ========================== * * Other * ========================== */ struct font_glyph *font_get_glyph(struct font *font, u32 codepoint) { if (codepoint < LOOKUP_TABLE_SIZE) { u16 index = font->lookup[codepoint]; if (index < font->glyphs_count) { return &font->glyphs[index]; } } return &font->glyphs[0]; }