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feat: d3d9-frame-graph-hook, add frame rate graph view (#330)
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Have a checkbox to switch to a frame graph focused view
which saves a bunch of math when it’s more useful to
focus on the frame/refresh rate than the frame time values.

Co-authored-by: icex2 <djh.icex2@gmail.com>
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icex2 2025-02-13 15:10:05 +01:00 committed by GitHub
parent 972acb5f0e
commit e0ff83f664
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GPG Key ID: B5690EEEBB952194
1 changed files with 227 additions and 2 deletions
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229
src/main/imgui-debug/frame-perf-graph.c
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@ -11,6 +11,7 @@ typedef struct imgui_debug_frame_perf_graph {
float target_time_ms;
float y_axis_min_time_ms;
float y_axis_max_time_ms;
bool show_frame_rate_graph;
} imgui_debug_frame_perf_graph_t;
static const ImVec2 WINDOW_MIN_SIZE = {320, 240};
@ -18,7 +19,224 @@ static const ImVec2 WINDOW_MIN_SIZE = {320, 240};
static imgui_debug_time_history_t _imgui_debug_frame_perf_graph_history;
static imgui_debug_frame_perf_graph_t _imgui_debug_frame_perf_graph;
static void _imgui_debug_frame_perf_graph_draw(
static void _imgui_debug_frame_perf_frame_rate_graph_draw(
imgui_debug_frame_perf_graph_t *graph,
const imgui_debug_time_history_t *history)
{
float current_value;
ImVec2 window_size;
static bool show_labels = true;
static bool show_target_line = true;
static bool show_avg_line = true;
log_assert(history);
current_value = 1000.0f / imgui_debug_time_history_recent_value_get(history);
igSetNextWindowSize(WINDOW_MIN_SIZE, ImGuiCond_FirstUseEver);
igSetNextWindowSizeConstraints(WINDOW_MIN_SIZE, igGetIO()->DisplaySize, NULL, NULL);
igBegin("Frame Rate Graph", NULL, ImGuiWindowFlags_MenuBar);
// Add menu bar
if (igBeginMenuBar()) {
if (igBeginMenu("Settings", true)) {
igPushItemWidth(110);
float min_fps = 1000.0f / graph->y_axis_max_time_ms;
float max_fps = 1000.0f / graph->y_axis_min_time_ms;
float target_fps = 1000.0f / graph->target_time_ms;
if (igDragFloat("y-axis min FPS", &min_fps, 1.0f, 1.0f, max_fps - 1.0f, "%.1f", ImGuiSliderFlags_None)) {
graph->y_axis_max_time_ms = 1000.0f / min_fps;
}
if (igDragFloat("y-axis max FPS", &max_fps, 1.0f, min_fps + 1.0f, 1000.0f, "%.1f", ImGuiSliderFlags_None)) {
graph->y_axis_min_time_ms = 1000.0f / max_fps;
}
if (igInputFloat("Target FPS", &target_fps, 0.0f, 0.0f, "%.3f", ImGuiInputTextFlags_EnterReturnsTrue)) {
if (target_fps >= 1.0f && target_fps <= 1000.0f) {
graph->target_time_ms = 1000.0f / target_fps;
} else {
target_fps = 1000.0f / graph->target_time_ms;
}
}
igCheckbox("Show reference line labels", &show_labels);
igCheckbox("Show target reference line", &show_target_line);
igCheckbox("Show average reference line", &show_avg_line);
if (igButton("Focus on average", (ImVec2){0, 0})) {
float avg_fps = 1000.0f / history->avg_time_ms;
graph->y_axis_min_time_ms = 1000.0f / (avg_fps + 10.0f);
graph->y_axis_max_time_ms = 1000.0f / fmaxf(avg_fps - 10.0f, 1.0f);
}
igSameLine(0, -1);
if (igButton("Focus on target", (ImVec2){0, 0})) {
float target_fps = 1000.0f / graph->target_time_ms;
graph->y_axis_min_time_ms = 1000.0f / (target_fps + 10.0f);
graph->y_axis_max_time_ms = 1000.0f / fmaxf(target_fps - 10.0f, 1.0f);
}
igCheckbox("Show frame rate graph", &graph->show_frame_rate_graph);
igPopItemWidth();
igEndMenu();
}
igEndMenuBar();
}
igGetContentRegionAvail(&window_size);
igPushStyleColor_Vec4(ImGuiCol_Text, (ImVec4){1, 1, 0, 1});
igText("Now %.3f FPS", current_value);
igPopStyleColor(1);
igSameLine(0, -1);
igPushStyleColor_Vec4(ImGuiCol_Text, (ImVec4){1, 0, 0, 1});
igText("Target %.3f FPS", 1000.0f / graph->target_time_ms);
igPopStyleColor(1);
igPushStyleColor_Vec4(ImGuiCol_Text, (ImVec4){0, 1, 0, 1});
igText("Avg %.3f FPS", 1000.0f / history->avg_time_ms);
igPopStyleColor(1);
igSameLine(0, -1);
igText(" Min %.3f FPS Max %.3f FPS", 1000.0f / history->max_time_ms, 1000.0f / history->min_time_ms);
// Setup plot area using actual window size, with extra space at top for "FPS" label
ImVec2 plot_pos;
igGetCursorScreenPos(&plot_pos);
plot_pos.y += 15; // Add space at top for "FPS" label
ImVec2 plot_size = {window_size.x - 50, window_size.y - 65}; // Adjusted for extra top space
// Convert time values to FPS for plotting
float fps_values[history->size];
for(int i = 0; i < history->size; i++) {
fps_values[i] = 1000.0f / history->time_values_ms[i];
}
// Plot FPS values
ImVec2 plot_pos_offset = {plot_pos.x + 50, plot_pos.y};
igSetCursorScreenPos(plot_pos_offset);
igPlotLines_FloatPtr("##framegraph",
fps_values,
history->size,
history->current_index,
"",
1000.0f / graph->y_axis_min_time_ms, // Swapped min/max to invert Y axis
1000.0f / graph->y_axis_max_time_ms,
plot_size,
sizeof(float));
// Draw Y axis (FPS)
ImDrawList* draw_list = igGetWindowDrawList();
char y_label[32];
ImDrawList_AddLine(draw_list,
(ImVec2){plot_pos.x + 50, plot_pos.y},
(ImVec2){plot_pos.x + 50, plot_pos.y + plot_size.y},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), 1.0f);
// Draw "FPS" label at top of y-axis
ImDrawList_AddText_Vec2(draw_list, (ImVec2){plot_pos.x + 5, plot_pos.y - 15},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), "FPS", NULL);
// Scale number of reference points based on plot height
int num_reference_points = (int)(plot_size.y / 25); // One point per ~40 pixels
if (num_reference_points < 4) num_reference_points = 4;
float fps_min = 1000.0f / graph->y_axis_max_time_ms;
float fps_max = 1000.0f / graph->y_axis_min_time_ms;
float fps_step = (fps_max - fps_min) / (num_reference_points + 1);
// Draw min FPS value at bottom of y-axis and reference line
snprintf(y_label, sizeof(y_label), "%.3f", fps_min);
ImDrawList_AddText_Vec2(draw_list, (ImVec2){plot_pos.x + 5, plot_pos.y + plot_size.y - 10},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), y_label, NULL);
ImDrawList_AddLine(draw_list,
(ImVec2){plot_pos.x + 50, plot_pos.y + plot_size.y},
(ImVec2){plot_pos.x + plot_size.x + 50, plot_pos.y + plot_size.y},
igColorConvertFloat4ToU32((ImVec4){1,1,1,0.3f}), 1.0f);
// Draw reference points and lines on side of y-axis
for (int i = 1; i <= num_reference_points; i++) {
float value = fps_min + (fps_step * i);
float normalized_pos = 1.0f - ((value - fps_min) / (fps_max - fps_min)); // Inverted normalization
float y_pos = plot_pos.y + (plot_size.y * normalized_pos);
snprintf(y_label, sizeof(y_label), "%.3f", value);
ImDrawList_AddText_Vec2(draw_list, (ImVec2){plot_pos.x + 5, y_pos - 5},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), y_label, NULL);
ImDrawList_AddLine(draw_list,
(ImVec2){plot_pos.x + 50, y_pos},
(ImVec2){plot_pos.x + plot_size.x + 50, y_pos},
igColorConvertFloat4ToU32((ImVec4){1,1,1,0.2f}), 1.0f);
}
// Draw max FPS value at top of y-axis and reference line
snprintf(y_label, sizeof(y_label), "%.3f", fps_max);
ImDrawList_AddText_Vec2(draw_list, (ImVec2){plot_pos.x + 5, plot_pos.y},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), y_label, NULL);
ImDrawList_AddLine(draw_list,
(ImVec2){plot_pos.x + 50, plot_pos.y},
(ImVec2){plot_pos.x + plot_size.x + 50, plot_pos.y},
igColorConvertFloat4ToU32((ImVec4){1,1,1,0.3f}), 1.0f);
// Draw target FPS reference line if within plot area
float target_fps_value = 1000.0f / graph->target_time_ms;
if (show_target_line && target_fps_value >= fps_min && target_fps_value <= fps_max) {
float normalized_target = 1.0f - ((target_fps_value - fps_min) / (fps_max - fps_min)); // Inverted normalization
float y_pos_target = plot_pos.y + (plot_size.y * normalized_target);
ImDrawList_AddLine(draw_list,
(ImVec2){plot_pos.x + 50, y_pos_target},
(ImVec2){plot_pos.x + plot_size.x + 50, y_pos_target},
igColorConvertFloat4ToU32((ImVec4){1,0,0,1.0f}), 1.0f);
if (show_labels) {
snprintf(y_label, sizeof(y_label), "%.3f", target_fps_value);
ImDrawList_AddText_Vec2(draw_list,
(ImVec2){plot_pos.x + 50 + plot_size.x/2 - 10, y_pos_target + 5},
igColorConvertFloat4ToU32((ImVec4){1,0,0,1}), y_label, NULL);
}
}
// Draw reference line for current average if within plot area
float avg_fps = 1000.0f / history->avg_time_ms;
if (show_avg_line && avg_fps >= fps_min && avg_fps <= fps_max) {
float normalized_avg = 1.0f - ((avg_fps - fps_min) / (fps_max - fps_min)); // Inverted normalization
float y_pos_avg = plot_pos.y + (plot_size.y * normalized_avg);
ImDrawList_AddLine(draw_list,
(ImVec2){plot_pos.x + 50, y_pos_avg},
(ImVec2){plot_pos.x + plot_size.x + 50, y_pos_avg},
igColorConvertFloat4ToU32((ImVec4){0,1,0,1.0f}), 1.0f);
if (show_labels) {
snprintf(y_label, sizeof(y_label), "%.3f", avg_fps);
ImDrawList_AddText_Vec2(draw_list,
(ImVec2){plot_pos.x + 50 + plot_size.x/2 - 10, y_pos_avg + 5},
igColorConvertFloat4ToU32((ImVec4){0,1,0,1}), y_label, NULL);
}
}
// Draw X axis (time in frames)
ImDrawList_AddLine(draw_list,
(ImVec2){plot_pos.x + 50, plot_pos.y + plot_size.y},
(ImVec2){plot_pos.x + plot_size.x + 50, plot_pos.y + plot_size.y},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), 1.0f);
// Draw "frames" label centered on x-axis
ImDrawList_AddText_Vec2(draw_list, (ImVec2){plot_pos.x + 50 + (plot_size.x / 2) - 20, plot_pos.y + plot_size.y + 5},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), "frames ago", NULL);
char x_label[32];
snprintf(x_label, sizeof(x_label), "%d", history->size);
ImDrawList_AddText_Vec2(draw_list, (ImVec2){plot_pos.x + 50, plot_pos.y + plot_size.y + 5},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), x_label, NULL);
ImDrawList_AddText_Vec2(draw_list, (ImVec2){plot_pos.x + plot_size.x + 50, plot_pos.y + plot_size.y + 5},
igColorConvertFloat4ToU32((ImVec4){1,1,1,1}), "0", NULL);
igEnd();
}
static void _imgui_debug_frame_perf_frame_time_graph_draw(
imgui_debug_frame_perf_graph_t *graph,
const imgui_debug_time_history_t *history)
{
@ -82,6 +300,8 @@ static void _imgui_debug_frame_perf_graph_draw(
graph->y_axis_max_time_ms = 1000.0f / fmaxf(target_fps - 10.0f, 1.0f);
}
igCheckbox("Show frame rate graph", &graph->show_frame_rate_graph);
igPopItemWidth();
igEndMenu();
}
@ -238,7 +458,11 @@ static void _imgui_debug_frame_perf_graph_component_frame_update(ImGuiContext *c
imgui_debug_time_history_update(&_imgui_debug_frame_perf_graph_history, 1000.0f / io->Framerate);
_imgui_debug_frame_perf_graph_draw(&_imgui_debug_frame_perf_graph, &_imgui_debug_frame_perf_graph_history);
if (_imgui_debug_frame_perf_graph.show_frame_rate_graph) {
_imgui_debug_frame_perf_frame_rate_graph_draw(&_imgui_debug_frame_perf_graph, &_imgui_debug_frame_perf_graph_history);
} else {
_imgui_debug_frame_perf_frame_time_graph_draw(&_imgui_debug_frame_perf_graph, &_imgui_debug_frame_perf_graph_history);
}
}
void imgui_debug_frame_perf_graph_init(
@ -253,6 +477,7 @@ void imgui_debug_frame_perf_graph_init(
_imgui_debug_frame_perf_graph.target_time_ms = 1000.0f / target_fps;
_imgui_debug_frame_perf_graph.y_axis_min_time_ms = 1000.0f / fmaxf(0.0f, target_fps - 20.0f);
_imgui_debug_frame_perf_graph.y_axis_max_time_ms = 1000.0f / fminf(target_fps + 20.0f, 1000.0f);
_imgui_debug_frame_perf_graph.show_frame_rate_graph = false;
component->frame_update = _imgui_debug_frame_perf_graph_component_frame_update;
}