148 lines
4.7 KiB
C++
148 lines
4.7 KiB
C++
#include <ctime>
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#include <libreborn/libreborn.h>
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#include <symbols/minecraft.h>
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#include <media-layer/core.h>
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#include <SDL/SDL.h>
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#include "../init/init.h"
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#include "../compat/compat.h"
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#include "../misc/misc.h"
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// --benchmark: Activate Benchmark
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static bool active = false;
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__attribute__((constructor)) static void _init_active(int argc, char *argv[]) {
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// Iterate Arguments
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for (int i = 1; i < argc; i++) {
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// Check Argument
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if (strcmp(argv[i], "--benchmark") == 0) {
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// Enabled
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active = true;
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break;
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}
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}
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}
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// Constants
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#define NANOSECONDS_IN_SECOND 1000000000ll
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// Config
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#define BENCHMARK_GAME_MODE 1 // Creative Mode
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#define BENCHMARK_SEED 2048 // Random Number
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#define BENCHMARK_WORLD_NAME "_Benchmark" // Random Number
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#define BENCHMARK_LENGTH (180ll * NANOSECONDS_IN_SECOND) // 3 Minutes
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#define BENCHMARK_ROTATION_INTERVAL ((long long int) (0.02f * NANOSECONDS_IN_SECOND))
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#define BENCHMARK_ROTATION_AMOUNT 10
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// Create/Start World
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static void start_world(unsigned char *minecraft) {
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// Log
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INFO("%s", "Loading Benchmark");
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// Specify Level Settings
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LevelSettings settings;
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settings.game_type = BENCHMARK_GAME_MODE;
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settings.seed = BENCHMARK_SEED;
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// Delete World If It Already Exists
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unsigned char *level_source = (*Minecraft_getLevelSource)(minecraft);
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unsigned char *level_source_vtable = *(unsigned char **) level_source;
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ExternalFileLevelStorageSource_deleteLevel_t ExternalFileLevelStorageSource_deleteLevel = *(ExternalFileLevelStorageSource_deleteLevel_t *) (level_source_vtable + ExternalFileLevelStorageSource_deleteLevel_vtable_offset);
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(*ExternalFileLevelStorageSource_deleteLevel)(level_source, BENCHMARK_WORLD_NAME);
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// Select Level
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(*Minecraft_selectLevel)(minecraft, BENCHMARK_WORLD_NAME, BENCHMARK_WORLD_NAME, settings);
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// Open ProgressScreen
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void *screen = ::operator new(PROGRESS_SCREEN_SIZE);
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ALLOC_CHECK(screen);
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screen = (*ProgressScreen)((unsigned char *) screen);
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(*Minecraft_setScreen)(minecraft, (unsigned char *) screen);
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}
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// Track Frames
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static unsigned long long int frames = 0;
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HOOK(media_swap_buffers, void, ()) {
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ensure_media_swap_buffers();
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(*real_media_swap_buffers)();
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frames++;
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}
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// Get Time
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static long long int get_time() {
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
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long long int a = (long long int) ts.tv_nsec;
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long long int b = ((long long int) ts.tv_sec) * NANOSECONDS_IN_SECOND;
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return a + b;
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}
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// Store Time When World Loaded
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static int world_loaded = 0;
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static long long int world_loaded_time;
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static unsigned long long int world_loaded_frames;
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// Runs Every Tick
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static bool loaded = false;
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static bool exit_requested = false;
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static void Minecraft_update_injection(unsigned char *minecraft) {
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// Create/Start World
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if (!loaded) {
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start_world(minecraft);
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loaded = true;
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}
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// Detect World Loaded
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if (!world_loaded && (*Minecraft_isLevelGenerated)(minecraft)) {
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world_loaded = 1;
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world_loaded_time = get_time();
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world_loaded_frames = frames;
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}
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// Run Benchmark
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if (!exit_requested && world_loaded) {
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// Get Time
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long long int current_time = get_time() - world_loaded_time;
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unsigned long long int current_frames = frames - world_loaded_frames;
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// Rotate Player
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static long long int rotate_point = BENCHMARK_ROTATION_INTERVAL;
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if (current_time >= rotate_point) {
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SDL_Event event;
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event.type = SDL_MOUSEMOTION;
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event.motion.x = 0;
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event.motion.y = 0;
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event.motion.xrel = BENCHMARK_ROTATION_AMOUNT;
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event.motion.yrel = 0;
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SDL_PushEvent(&event);
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// Reset Rotation Timer
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rotate_point += BENCHMARK_ROTATION_INTERVAL;
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}
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// Check If Benchmark Is Over
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if (current_time >= BENCHMARK_LENGTH) {
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// Request Exit
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compat_request_exit();
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// Disable Special Behavior After Requesting Exit
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exit_requested = true;
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// Calculate FPS
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static double frames_per_nanosecond = ((double) current_frames) / ((double) current_time);
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static double frames_per_second = frames_per_nanosecond * NANOSECONDS_IN_SECOND;
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INFO("Benchmark Completed After %llu Frames In %lld Nanoseconds, Average FPS: %f", current_frames, current_time, frames_per_second);
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}
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}
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}
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// Init Benchmark
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void init_benchmark() {
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if (active) {
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misc_run_on_update(Minecraft_update_injection);
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// Disable Interaction
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media_set_interactable(0);
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// Disable V-Sync
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media_disable_vsync();
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}
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}
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