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redream
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add frame time debug graph

This commit is contained in:
Anthony Pesch 2017-06-15 23:55:30 -04:00
parent de0dad6096
commit 955a2ae89c
1 changed files with 52 additions and 5 deletions
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57
src/emulator.c
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@ -53,7 +53,6 @@ struct emu {
struct host *host;
struct dreamcast *dc;
int debug_menu;
volatile int running;
volatile int video_width;
volatile int video_height;
@ -101,6 +100,13 @@ struct emu {
emulation thread when modified. instead, they are added to this modified
list which will be processed the next time the threads are synchronized */
struct list modified_textures;
/* debug stats */
int debug_menu;
int frame_stats;
int frame_seq;
float frame_times[360];
int64_t last_paint;
};
/*
@ -457,10 +463,12 @@ static void emu_paint(struct emu *emu) {
if (emu->debug_menu) {
if (igBeginMainMenuBar()) {
if (igBeginMenu("DEBUG", 1)) {
int tracing = emu->trace_writer ? 1 : 0;
const char *tracing_label = tracing ? "stop trace" : "start trace";
if (igMenuItem("frame stats", NULL, emu->frame_stats, 1)) {
emu->frame_stats = !emu->frame_stats;
}
if (igMenuItem(tracing_label, NULL, tracing, 1)) {
if ((!emu->trace_writer && igMenuItem("start trace", NULL, 0, 1)) ||
(emu->trace_writer && igMenuItem("stop trace", NULL, 1, 1))) {
emu_toggle_tracing(emu);
}
@ -503,6 +511,35 @@ static void emu_paint(struct emu *emu) {
igEndMainMenuBar();
}
if (emu->frame_stats) {
if (igBegin("frame stats", NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
/* frame times */
{
struct ImVec2 graph_size = {300.0f, 50.0f};
int num_frame_times = array_size(emu->frame_times);
float min_time = FLT_MAX;
float max_time = -FLT_MAX;
float avg_time = 0.0f;
for (int i = 0; i < num_frame_times; i++) {
float time = emu->frame_times[i];
min_time = MIN(min_time, time);
max_time = MAX(max_time, time);
avg_time += time;
}
avg_time /= num_frame_times;
igValueFloat("min time", min_time, "%.2f");
igValueFloat("max time", max_time, "%.2f");
igValueFloat("avg time", avg_time, "%.2f");
igPlotLines("", emu->frame_times, num_frame_times, emu->frame_seq,
NULL, 0.0f, 60.0f, graph_size, sizeof(float));
}
igEnd();
}
}
}
#endif
@ -709,9 +746,19 @@ void emu_run_frame(struct emu *emu) {
dc_tick(emu->dc, MACHINE_STEP);
}
prof_update(time_nanoseconds());
int64_t now = time_nanoseconds();
prof_update(now);
emu_paint(emu);
if (emu->last_paint) {
float frame_time_ms = (float)(now - emu->last_paint) / 1000000.0f;
int num_frame_times = array_size(emu->frame_times);
emu->frame_times[emu->frame_seq] = frame_time_ms;
emu->frame_seq = (emu->frame_seq + 1) % num_frame_times;
}
emu->last_paint = now;
}
int emu_load_game(struct emu *emu, const char *path) {