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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 host *host;
struct dreamcast *dc; struct dreamcast *dc;
int debug_menu;
volatile int running; volatile int running;
volatile int video_width; volatile int video_width;
volatile int video_height; volatile int video_height;
@ -101,6 +100,13 @@ struct emu {
emulation thread when modified. instead, they are added to this modified emulation thread when modified. instead, they are added to this modified
list which will be processed the next time the threads are synchronized */ list which will be processed the next time the threads are synchronized */
struct list modified_textures; 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 (emu->debug_menu) {
if (igBeginMainMenuBar()) { if (igBeginMainMenuBar()) {
if (igBeginMenu("DEBUG", 1)) { if (igBeginMenu("DEBUG", 1)) {
int tracing = emu->trace_writer ? 1 : 0; if (igMenuItem("frame stats", NULL, emu->frame_stats, 1)) {
const char *tracing_label = tracing ? "stop trace" : "start trace"; 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); emu_toggle_tracing(emu);
} }
@ -503,6 +511,35 @@ static void emu_paint(struct emu *emu) {
igEndMainMenuBar(); 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 #endif
@ -709,9 +746,19 @@ void emu_run_frame(struct emu *emu) {
dc_tick(emu->dc, MACHINE_STEP); dc_tick(emu->dc, MACHINE_STEP);
} }
prof_update(time_nanoseconds()); int64_t now = time_nanoseconds();
prof_update(now);
emu_paint(emu); 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) { int emu_load_game(struct emu *emu, const char *path) {