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RetroArch/runloop.h
Ophidon 7b711214a7
Slang Subframe Shaders Feature (#16209) 
Adds support for sub-frame shaders to vulkan/glcore/dx10-11-12.

Builds on the concept already present for frame duplication in use for BFI, to present multiple 'sub' frames per real frame to the shaders, so they can run at a higher framerate than the content framerate. Must be enabled via subframe shaders setting under synchronization settings to be active.

Will allow BFI to be implemented inside of the shaders, among any other use for the higher framerate shader authors can devise.

CurrentSubFrame and TotalSubFrames have been available inside the shaders to track what they want to do on an given subframe. TotalSubFrames will always be 1 when the setting is disabled (and when in menu/ff/pause). Framecount will not increment on sub-frames, as it does not for injected bfi frames now. Should not interfere with any existing shaders that do not check for subframes.
2024-02-09 03:12:55 -08:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2021 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __RUNLOOP_H
#define __RUNLOOP_H
#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <boolean.h>
#include <retro_inline.h>
#include <retro_common_api.h>
#include <libretro.h>
#include <dynamic/dylib.h>
#include <queues/message_queue.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_THREADS
#include <rthreads/rthreads.h>
#endif
#include "dynamic.h"
#include "configuration.h"
#include "core_option_manager.h"
#include "performance_counters.h"
#include "state_manager.h"
#ifdef HAVE_RUNAHEAD
#include "runahead.h"
#endif
#include "tasks/tasks_internal.h"
/* Arbitrary twenty subsystems limit */
#define SUBSYSTEM_MAX_SUBSYSTEMS 20
/* Arbitrary 10 roms for each subsystem limit */
#define SUBSYSTEM_MAX_SUBSYSTEM_ROMS 10
#ifdef HAVE_THREADS
#define RUNLOOP_MSG_QUEUE_LOCK(runloop_st) slock_lock((runloop_st)->msg_queue_lock)
#define RUNLOOP_MSG_QUEUE_UNLOCK(runloop_st) slock_unlock((runloop_st)->msg_queue_lock)
#else
#define RUNLOOP_MSG_QUEUE_LOCK(runloop_st) (void)(runloop_st)
#define RUNLOOP_MSG_QUEUE_UNLOCK(runloop_st) (void)(runloop_st)
#endif
#ifdef HAVE_BSV_MOVIE
#define BSV_MOVIE_IS_EOF() || (((input_st->bsv_movie_state.flags & BSV_FLAG_MOVIE_END) && (input_st->bsv_movie_state.flags & BSV_FLAG_MOVIE_EOF_EXIT)))
#else
#define BSV_MOVIE_IS_EOF()
#endif
/* Time to exit out of the main loop?
* Reasons for exiting:
* a) Shutdown environment callback was invoked.
* b) Quit key was pressed.
* c) Frame count exceeds or equals maximum amount of frames to run.
* d) Video driver no longer alive.
* e) End of BSV movie and BSV EOF exit is true. (TODO/FIXME - explain better)
*/
#define RUNLOOP_TIME_TO_EXIT(quit_key_pressed) ((runloop_state.flags & RUNLOOP_FLAG_SHUTDOWN_INITIATED) || quit_key_pressed || !is_alive BSV_MOVIE_IS_EOF() || ((runloop_state.max_frames != 0) && (frame_count >= runloop_state.max_frames)) || runloop_exec)
enum runloop_state_enum
{
RUNLOOP_STATE_ITERATE = 0,
RUNLOOP_STATE_POLLED_AND_SLEEP,
RUNLOOP_STATE_PAUSE,
RUNLOOP_STATE_MENU,
RUNLOOP_STATE_QUIT
};
enum poll_type_override_t
{
POLL_TYPE_OVERRIDE_DONTCARE = 0,
POLL_TYPE_OVERRIDE_EARLY,
POLL_TYPE_OVERRIDE_NORMAL,
POLL_TYPE_OVERRIDE_LATE
};
enum runloop_flags
{
RUNLOOP_FLAG_MAX_FRAMES_SCREENSHOT = (1 << 0),
RUNLOOP_FLAG_HAS_SET_CORE = (1 << 1),
RUNLOOP_FLAG_CORE_SET_SHARED_CONTEXT = (1 << 2),
RUNLOOP_FLAG_IGNORE_ENVIRONMENT_CB = (1 << 3),
RUNLOOP_FLAG_IS_SRAM_LOAD_DISABLED = (1 << 4),
RUNLOOP_FLAG_IS_SRAM_SAVE_DISABLED = (1 << 5),
RUNLOOP_FLAG_USE_SRAM = (1 << 6),
RUNLOOP_FLAG_PATCH_BLOCKED = (1 << 7),
RUNLOOP_FLAG_REQUEST_SPECIAL_SAVESTATE = (1 << 8),
RUNLOOP_FLAG_OVERRIDES_ACTIVE = (1 << 9),
RUNLOOP_FLAG_GAME_OPTIONS_ACTIVE = (1 << 10),
RUNLOOP_FLAG_FOLDER_OPTIONS_ACTIVE = (1 << 11),
RUNLOOP_FLAG_REMAPS_CORE_ACTIVE = (1 << 12),
RUNLOOP_FLAG_REMAPS_GAME_ACTIVE = (1 << 13),
RUNLOOP_FLAG_REMAPS_CONTENT_DIR_ACTIVE = (1 << 14),
RUNLOOP_FLAG_SHUTDOWN_INITIATED = (1 << 15),
RUNLOOP_FLAG_CORE_SHUTDOWN_INITIATED = (1 << 16),
RUNLOOP_FLAG_CORE_RUNNING = (1 << 17),
RUNLOOP_FLAG_AUTOSAVE = (1 << 18),
RUNLOOP_FLAG_HAS_VARIABLE_UPDATE = (1 << 19),
RUNLOOP_FLAG_INPUT_IS_DIRTY = (1 << 20),
RUNLOOP_FLAG_RUNAHEAD_SAVE_STATE_SIZE_KNOWN = (1 << 21),
RUNLOOP_FLAG_RUNAHEAD_AVAILABLE = (1 << 22),
RUNLOOP_FLAG_RUNAHEAD_SECONDARY_CORE_AVAILABLE = (1 << 23),
RUNLOOP_FLAG_RUNAHEAD_FORCE_INPUT_DIRTY = (1 << 24),
RUNLOOP_FLAG_SLOWMOTION = (1 << 25),
RUNLOOP_FLAG_FASTMOTION = (1 << 26),
RUNLOOP_FLAG_PAUSED = (1 << 27),
RUNLOOP_FLAG_IDLE = (1 << 28),
RUNLOOP_FLAG_FOCUSED = (1 << 29),
RUNLOOP_FLAG_FORCE_NONBLOCK = (1 << 30),
RUNLOOP_FLAG_IS_INITED = (1 << 31)
};
/* Contains the current retro_fastforwarding_override
* parameters along with any pending updates triggered
* by RETRO_ENVIRONMENT_SET_FASTFORWARDING_OVERRIDE */
typedef struct fastmotion_overrides
{
struct retro_fastforwarding_override current;
struct retro_fastforwarding_override next;
bool pending;
} fastmotion_overrides_t;
typedef struct
{
unsigned priority;
float duration;
char str[128];
bool set;
} runloop_core_status_msg_t;
/* Contains all callbacks associated with
* core options.
* > At present there is only a single
* callback, 'update_display' - but we
* may wish to add more in the future
* (e.g. for directly informing a core of
* core option value changes, or getting/
* setting extended/non-standard option
* value data types) */
typedef struct core_options_callbacks
{
retro_core_options_update_display_callback_t update_display;
} core_options_callbacks_t;
struct runloop
{
#if defined(HAVE_CG) || defined(HAVE_GLSL) || defined(HAVE_SLANG) || defined(HAVE_HLSL)
rarch_timer_t shader_delay_timer; /* int64_t alignment */
#endif
retro_time_t core_runtime_last;
retro_time_t core_runtime_usec;
retro_time_t frame_limit_minimum_time;
retro_time_t frame_limit_last_time;
retro_usec_t frame_time_last; /* int64_t alignment */
struct retro_core_t current_core; /* uint64_t alignment */
#if defined(HAVE_RUNAHEAD)
uint64_t runahead_last_frame_count; /* uint64_t alignment */
#if defined(HAVE_DYNAMIC) || defined(HAVE_DYLIB)
struct retro_core_t secondary_core; /* uint64_t alignment */
#endif
retro_ctx_load_content_info_t *load_content_info;
#if defined(HAVE_DYNAMIC) || defined(HAVE_DYLIB)
char *secondary_library_path;
#endif
my_list *runahead_save_state_list;
my_list *input_state_list;
preempt_t *preempt_data;
#endif
#ifdef HAVE_REWIND
struct state_manager_rewind_state rewind_st;
#endif
struct retro_perf_counter *perf_counters_libretro[MAX_COUNTERS];
bool *load_no_content_hook;
struct string_list *subsystem_fullpaths;
struct retro_subsystem_info subsystem_data[SUBSYSTEM_MAX_SUBSYSTEMS];
struct retro_callbacks retro_ctx; /* ptr alignment */
msg_queue_t msg_queue; /* ptr alignment */
retro_input_poll_t input_poll_callback_original; /* ptr alignment */
retro_input_state_t input_state_callback_original; /* ptr alignment */
#ifdef HAVE_RUNAHEAD
function_t retro_reset_callback_original; /* ptr alignment */
function_t original_retro_deinit; /* ptr alignment */
function_t original_retro_unload; /* ptr alignment */
runahead_load_state_function
retro_unserialize_callback_original; /* ptr alignment */
#if defined(HAVE_DYNAMIC) || defined(HAVE_DYLIB)
struct retro_callbacks secondary_callbacks; /* ptr alignment */
#endif
#endif
#ifdef HAVE_THREADS
slock_t *msg_queue_lock;
#endif
content_state_t content_st; /* ptr alignment */
struct retro_subsystem_rom_info
subsystem_data_roms[SUBSYSTEM_MAX_SUBSYSTEMS]
[SUBSYSTEM_MAX_SUBSYSTEM_ROMS]; /* ptr alignment */
core_option_manager_t *core_options;
core_options_callbacks_t core_options_callback;/* ptr alignment */
retro_keyboard_event_t key_event; /* ptr alignment */
retro_keyboard_event_t frontend_key_event; /* ptr alignment */
rarch_system_info_t system; /* ptr alignment */
struct retro_frame_time_callback frame_time; /* ptr alignment */
struct retro_audio_buffer_status_callback audio_buffer_status; /* ptr alignment */
#ifdef HAVE_DYNAMIC
dylib_t lib_handle; /* ptr alignment */
#endif
#if defined(HAVE_RUNAHEAD)
#if defined(HAVE_DYNAMIC) || defined(HAVE_DYLIB)
dylib_t secondary_lib_handle; /* ptr alignment */
#endif
size_t runahead_save_state_size;
#endif
size_t msg_queue_size;
#if defined(HAVE_RUNAHEAD)
#if defined(HAVE_DYNAMIC) || defined(HAVE_DYLIB)
int port_map[MAX_USERS];
#endif
#endif
runloop_core_status_msg_t core_status_msg;
unsigned msg_queue_delay;
unsigned pending_windowed_scale;
unsigned max_frames;
unsigned audio_latency;
unsigned fastforward_after_frames;
unsigned perf_ptr_libretro;
unsigned subsystem_current_count;
unsigned entry_state_slot;
unsigned video_swap_interval_auto;
fastmotion_overrides_t fastmotion_override; /* float alignment */
retro_bits_t has_set_libretro_device; /* uint32_t alignment */
enum rarch_core_type current_core_type;
enum rarch_core_type explicit_current_core_type;
enum poll_type_override_t core_poll_type_override;
#if defined(HAVE_RUNAHEAD)
enum rarch_core_type last_core_type;
#endif
uint32_t flags;
int8_t run_frames_and_pause;
char runtime_content_path_basename[8192];
char current_library_name[NAME_MAX_LENGTH];
char current_library_version[256];
char current_valid_extensions[256];
char subsystem_path[256];
#ifdef HAVE_SCREENSHOTS
char max_frames_screenshot_path[PATH_MAX_LENGTH];
#endif
#if defined(HAVE_CG) || defined(HAVE_GLSL) || defined(HAVE_SLANG) || defined(HAVE_HLSL)
char runtime_shader_preset_path[PATH_MAX_LENGTH];
#endif
char runtime_content_path[PATH_MAX_LENGTH];
char runtime_core_path[PATH_MAX_LENGTH];
char savefile_dir[PATH_MAX_LENGTH];
char savestate_dir[PATH_MAX_LENGTH];
struct
{
char *remapfile;
char savefile[8192];
char savestate[8192];
char replay[8192];
char cheatfile[8192];
char ups[8192];
char bps[8192];
char ips[8192];
char xdelta[8192];
char label[8192];
} name;
bool missing_bios;
bool perfcnt_enable;
};
typedef struct runloop runloop_state_t;
RETRO_BEGIN_DECLS
void runloop_path_fill_names(void);
/**
* runloop_environment_cb:
* @cmd : Identifier of command.
* @data : Pointer to data.
*
* Environment callback function implementation.
*
* Returns: true (1) if environment callback command could
* be performed, otherwise false (0).
**/
bool runloop_environment_cb(unsigned cmd, void *data);
void runloop_msg_queue_push(const char *msg,
unsigned prio, unsigned duration,
bool flush,
char *title,
enum message_queue_icon icon,
enum message_queue_category category);
void runloop_set_current_core_type(
enum rarch_core_type type, bool explicitly_set);
/**
* runloop_iterate:
*
* Run Libretro core in RetroArch for one frame.
*
* Returns: 0 on successful run,
* Returns 1 if we have to wait until button input in order
* to wake up the loop.
* Returns -1 if we forcibly quit out of the
* RetroArch iteration loop.
**/
int runloop_iterate(void);
void runloop_system_info_free(void);
/**
* libretro_get_system_info:
* @path : Path to libretro library.
* @info : Pointer to system info information.
* @load_no_content : If true, core should be able to auto-start
* without any content loaded.
*
* Gets system info from an arbitrary lib.
* The struct returned must be freed as strings are allocated dynamically.
*
* Returns: true (1) if successful, otherwise false (0).
**/
bool libretro_get_system_info(
const char *path,
struct retro_system_info *info,
bool *load_no_content);
void runloop_performance_counter_register(
struct retro_perf_counter *perf);
void runloop_runtime_log_deinit(
runloop_state_t *runloop_st,
bool content_runtime_log,
bool content_runtime_log_aggregate,
const char *dir_runtime_log,
const char *dir_playlist);
void runloop_event_deinit_core(void);
bool runloop_event_init_core(
settings_t *settings,
void *input_data,
enum rarch_core_type type,
const char *old_savefile_dir,
const char *old_savestate_dir
);
void runloop_pause_checks(void);
void runloop_set_frame_limit(
const struct retro_system_av_info *av_info,
float fastforward_ratio);
float runloop_get_fastforward_ratio(
settings_t *settings,
struct retro_fastforwarding_override *fastmotion_override);
void runloop_set_video_swap_interval(
bool vrr_runloop_enable,
bool crt_switching_active,
unsigned swap_interval_config,
unsigned black_frame_insertion,
unsigned shader_subframes,
float audio_max_timing_skew,
float video_refresh_rate,
double input_fps);
unsigned runloop_get_video_swap_interval(
unsigned swap_interval_config);
void runloop_task_msg_queue_push(
retro_task_t *task, const char *msg,
unsigned prio, unsigned duration,
bool flush);
bool secondary_core_ensure_exists(void *data, settings_t *settings);
void runloop_log_counters(
struct retro_perf_counter **counters, unsigned num);
void runloop_msg_queue_deinit(void);
void runloop_msg_queue_init(void);
void runloop_path_set_basename(const char *path);
void runloop_path_set_names(void);
uint32_t runloop_get_flags(void);
bool runloop_get_entry_state_path(char *path, size_t len, unsigned slot);
bool runloop_get_current_savestate_path(char *path, size_t len);
bool runloop_get_savestate_path(char *path, size_t len, int slot);
bool runloop_get_current_replay_path(char *path, size_t len);
bool runloop_get_replay_path(char *path, size_t len, unsigned slot);
void runloop_state_free(runloop_state_t *runloop_st);
void runloop_path_set_redirect(settings_t *settings, const char *a, const char *b);
void runloop_path_set_special(char **argv, unsigned num_content);
void runloop_path_deinit_subsystem(void);
/**
* init_libretro_symbols:
* @type : Type of core to be loaded.
* If CORE_TYPE_DUMMY, will
* load dummy symbols.
*
* Setup libretro callback symbols.
*
* @return true on success, or false if symbols could not be loaded.
**/
bool runloop_init_libretro_symbols(
void *data,
enum rarch_core_type type,
struct retro_core_t *current_core,
const char *lib_path,
void *_lib_handle_p);
runloop_state_t *runloop_state_get_ptr(void);
RETRO_END_DECLS
#endif
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