mirror of
https://github.com/Ed94/raddebugger.git
synced 2026-06-13 15:42:23 -07:00
Ryan Fleury
153 lines
3.3 KiB
C
153 lines
3.3 KiB
C
// Copyright (c) Epic Games Tools
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// Licensed under the MIT license (https://opensource.org/license/mit/)
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#ifndef TEXTURE_CACHE_H
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#define TEXTURE_CACHE_H
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////////////////////////////////
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//~ rjf: Texture Topology
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typedef struct TEX_Topology TEX_Topology;
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struct TEX_Topology
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{
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Vec2S16 dim;
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R_Tex2DFormat fmt;
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};
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////////////////////////////////
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//~ rjf: Cache Types
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typedef struct TEX_Node TEX_Node;
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struct TEX_Node
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{
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TEX_Node *next;
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TEX_Node *prev;
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U128 hash;
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TEX_Topology topology;
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R_Handle texture;
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B32 is_working;
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U64 scope_ref_count;
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U64 last_time_touched_us;
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U64 last_user_clock_idx_touched;
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U64 load_count;
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};
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typedef struct TEX_Slot TEX_Slot;
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struct TEX_Slot
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{
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TEX_Node *first;
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TEX_Node *last;
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};
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typedef struct TEX_Stripe TEX_Stripe;
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struct TEX_Stripe
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{
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Arena *arena;
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OS_Handle rw_mutex;
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OS_Handle cv;
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};
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////////////////////////////////
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//~ rjf: Scoped Access
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typedef struct TEX_Touch TEX_Touch;
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struct TEX_Touch
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{
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TEX_Touch *next;
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U128 hash;
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TEX_Topology topology;
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};
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typedef struct TEX_Scope TEX_Scope;
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struct TEX_Scope
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{
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TEX_Scope *next;
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TEX_Touch *top_touch;
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};
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////////////////////////////////
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//~ rjf: Thread Context
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typedef struct TEX_TCTX TEX_TCTX;
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struct TEX_TCTX
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{
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Arena *arena;
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TEX_Scope *free_scope;
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TEX_Touch *free_touch;
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};
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////////////////////////////////
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//~ rjf: Shared State
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typedef struct TEX_Shared TEX_Shared;
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struct TEX_Shared
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{
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Arena *arena;
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// rjf: cache
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U64 slots_count;
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U64 stripes_count;
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TEX_Slot *slots;
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TEX_Stripe *stripes;
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TEX_Node **stripes_free_nodes;
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// rjf: user -> xfer thread
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U64 u2x_ring_size;
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U8 *u2x_ring_base;
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U64 u2x_ring_write_pos;
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U64 u2x_ring_read_pos;
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OS_Handle u2x_ring_cv;
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OS_Handle u2x_ring_mutex;
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// rjf: evictor thread
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OS_Handle evictor_thread;
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};
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////////////////////////////////
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//~ rjf: Globals
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thread_static TEX_TCTX *tex_tctx = 0;
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global TEX_Shared *tex_shared = 0;
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////////////////////////////////
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//~ rjf: Basic Helpers
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internal TEX_Topology tex_topology_make(Vec2S32 dim, R_Tex2DFormat fmt);
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////////////////////////////////
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//~ rjf: Main Layer Initialization
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internal void tex_init(void);
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////////////////////////////////
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//~ rjf: Thread Context Initialization
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internal void tex_tctx_ensure_inited(void);
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////////////////////////////////
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//~ rjf: Scoped Access
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internal TEX_Scope *tex_scope_open(void);
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internal void tex_scope_close(TEX_Scope *scope);
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internal void tex_scope_touch_node__stripe_r_guarded(TEX_Scope *scope, TEX_Node *node);
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////////////////////////////////
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//~ rjf: Cache Lookups
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internal R_Handle tex_texture_from_hash_topology(TEX_Scope *scope, U128 hash, TEX_Topology topology);
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internal R_Handle tex_texture_from_key_topology(TEX_Scope *scope, HS_Key key, TEX_Topology topology, U128 *hash_out);
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////////////////////////////////
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//~ rjf: Transfer Threads
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internal B32 tex_u2x_enqueue_req(U128 hash, TEX_Topology top, U64 endt_us);
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internal void tex_u2x_dequeue_req(U128 *hash_out, TEX_Topology *top_out);
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ASYNC_WORK_DEF(tex_xfer_work);
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////////////////////////////////
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//~ rjf: Evictor Threads
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internal void tex_evictor_thread__entry_point(void *p);
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#endif //TEXTURE_CACHE_H
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