TestEngine: UI: remove ref value picker. Made PerfCalcRef() pick value over 100 frames.

Author: ocornut

imgui_test_engine/imgui_te_context.cpp

@@ -4472,15 +4472,15 @@ void    ImGuiTestContext::UndockWindow(const char* window_name)
 // ImGuiTestContext - Performance Tools
 //-------------------------------------------------------------------------
 
-// Calculate the reference DeltaTime, averaged over PerfIterations/500 frames, with GuiFunc disabled.
+// Calculate the reference DeltaTime, averaged over 100 frames, with GuiFunc disabled.
 void    ImGuiTestContext::PerfCalcRef()
 {
     LogDebug("Measuring ref dt...");
     RunFlags |= ImGuiTestRunFlags_GuiFuncDisable;
 
     ImMovingAverage<double> delta_times;
-    delta_times.Init(PerfIterations);
-    for (int n = 0; n < PerfIterations && !Abort; n++)
+    delta_times.Init(100);
+    for (int n = 0; n < 100 && !Abort; n++)
     {
         Yield();
 

imgui_test_engine/imgui_te_engine.cpp

@@ -120,7 +120,6 @@ static void  ImGuiTestEngine_SettingsWriteAll(ImGuiContext* imgui_ctx, ImGuiSett
 
 ImGuiTestEngine::ImGuiTestEngine()
 {
-    PerfRefValue = 0.0f;
     PerfTool = IM_NEW(ImGuiPerfTool);
     UiFilterTests = IM_NEW(Str256); // We bite the bullet of adding an extra alloc/indirection in order to avoid including Str.h in our header
     UiFilterPerfs = IM_NEW(Str256);

imgui_test_engine/imgui_te_internal.h

@@ -219,7 +219,6 @@ struct ImGuiTestEngine
     ImGuiTestEnginePerfRecord   PerfDtPreRenderToPreSwap;
     ImGuiTestEnginePerfRecord   PerfDtPreNewFrameToPreSwap;
     ImGuiTestEnginePerfRecord   PerfDtPreSwapToPostSwap;
-    double                      PerfRefValue;
     ImGuiPerfTool*              PerfTool = nullptr;
 
     // Screen/Video Capturing

imgui_test_engine/imgui_te_ui.cpp

@@ -745,16 +745,11 @@ static void ImGuiTestEngine_ShowLogAndTools(ImGuiTestEngine* engine)
                 double fps_now = 1000.0 / dt_1;
 
                 ImGui::Checkbox("Unthrolled", &engine->IO.ConfigNoThrottle);
-                ImGui::SameLine();
-                if (ImGui::Button("Pick ref dt"))
-                    engine->PerfRefValue = avg_500;
-                ImGui::Text("[ref]      %6.3f ms", engine->PerfRefValue);
 
                 ImGui::SeparatorText("io.DeltaTime");
-                double dt_ref = engine->PerfRefValue;
-                ImGui::Text("[current] %6.3f ms (%.1f FPS) ++ %6.3f ms", dt_1, 1000.0 / dt_1, dt_1 - dt_ref);
-                ImGui::Text("[avg 100] %6.3f ms (%.1f FPS) ++ %6.3f ms ~ converging in %.1f secs", avg_100, 1000.0 / avg_100, dt_1 - dt_ref, 100.0 / fps_now);
-                ImGui::Text("[avg 500] %6.3f ms (%.1f FPS) ++ %6.3f ms ~ converging in %.1f secs", avg_500, 1000.0 / avg_500, dt_1 - dt_ref, 500.0 / fps_now);
+                ImGui::Text("[current] %6.3f ms (%.1f FPS)", dt_1, 1000.0 / dt_1);
+                ImGui::Text("[avg 100] %6.3f ms (%.1f FPS) ~ converging in %.1f secs", avg_100, 1000.0 / avg_100, 100.0 / fps_now);
+                ImGui::Text("[avg 500] %6.3f ms (%.1f FPS) ~ converging in %.1f secs", avg_500, 1000.0 / avg_500, 500.0 / fps_now);
                 ImGui::PlotLines("Last 500##0",
                     [](void* data, int n) { ImMovingAverage<double>* ma = (ImMovingAverage<double>*)data; return (float)ma->Samples[n]; },
                     ma, ma->Samples.Size, 0 * ma->Idx, nullptr, 0.0f, (float)(ImMax(avg_100, avg_500) * 1.2f), plot_size);