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Tweak computation of io.Framerate so it is less biased toward high-values in the first 120 frames. (#4138)

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This commit is contained in:
ocornut 2021-05-16 20:37:38 +02:00
parent 83bdfef8e0
commit 41030cbfe2
4 changed files with 6 additions and 3 deletions
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1
docs/CHANGELOG.txt
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@ -62,6 +62,7 @@ Other Changes:
- LabelText: Fixed clipping of multi-line value text when label is single-line. (#4004)
- LabelText: Fixed vertical alignment of single-line value text when label is multi-line. (#4004)
- Popups: Added 'OpenPopup(ImGuiID id)' overload to facilitate calling from nested stacks. (#3993, #331) [@zlash]
- Tweak computation of io.Framerate so it is less biased toward high-values in the first 120 frames. (#4138)
- Optimization: Disabling some of MSVC most aggressive Debug runtime checks for some simple/low-level functions
(e.g. ImVec2, ImVector) leading to a 10-20% increase of performances with MSVC "default" Debug settings.
- ImDrawList: Add and use SSE-enabled ImRsqrt() in place of 1.0f / ImSqrt(). (#4091) [@wolfpld]

3
imgui.cpp
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@ -3923,7 +3923,8 @@ void ImGui::NewFrame()
g.FramerateSecPerFrameAccum += g.IO.DeltaTime - g.FramerateSecPerFrame[g.FramerateSecPerFrameIdx];
g.FramerateSecPerFrame[g.FramerateSecPerFrameIdx] = g.IO.DeltaTime;
g.FramerateSecPerFrameIdx = (g.FramerateSecPerFrameIdx + 1) % IM_ARRAYSIZE(g.FramerateSecPerFrame);
g.IO.Framerate = (g.FramerateSecPerFrameAccum > 0.0f) ? (1.0f / (g.FramerateSecPerFrameAccum / (float)IM_ARRAYSIZE(g.FramerateSecPerFrame))) : FLT_MAX;
g.FramerateSecPerFrameCount = ImMin(g.FramerateSecPerFrameCount + 1, IM_ARRAYSIZE(g.FramerateSecPerFrame));
g.IO.Framerate = (g.FramerateSecPerFrameAccum > 0.0f) ? (1.0f / (g.FramerateSecPerFrameAccum / (float)g.FramerateSecPerFrameCount)) : FLT_MAX;
UpdateViewportsNewFrame();

2
imgui.h
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@ -1864,7 +1864,7 @@ struct ImGuiIO
bool WantSaveIniSettings; // When manual .ini load/save is active (io.IniFilename == NULL), this will be set to notify your application that you can call SaveIniSettingsToMemory() and save yourself. Important: clear io.WantSaveIniSettings yourself after saving!
bool NavActive; // Keyboard/Gamepad navigation is currently allowed (will handle ImGuiKey_NavXXX events) = a window is focused and it doesn't use the ImGuiWindowFlags_NoNavInputs flag.
bool NavVisible; // Keyboard/Gamepad navigation is visible and allowed (will handle ImGuiKey_NavXXX events).
float Framerate; // Application framerate estimate, in frame per second. Solely for convenience. Rolling average estimation based on io.DeltaTime over 120 frames.
float Framerate; // Rough estimate of application framerate, in frame per second. Solely for convenience. Rolling average estimation based on io.DeltaTime over 120 frames.
int MetricsRenderVertices; // Vertices output during last call to Render()
int MetricsRenderIndices; // Indices output during last call to Render() = number of triangles * 3
int MetricsRenderWindows; // Number of visible windows

3
imgui_internal.h
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@ -1586,6 +1586,7 @@ struct ImGuiContext
// Misc
float FramerateSecPerFrame[120]; // Calculate estimate of framerate for user over the last 2 seconds.
int FramerateSecPerFrameIdx;
int FramerateSecPerFrameCount;
float FramerateSecPerFrameAccum;
int WantCaptureMouseNextFrame; // Explicit capture via CaptureKeyboardFromApp()/CaptureMouseFromApp() sets those flags
int WantCaptureKeyboardNextFrame;
@ -1733,7 +1734,7 @@ struct ImGuiContext
DebugItemPickerBreakId = 0;
memset(FramerateSecPerFrame, 0, sizeof(FramerateSecPerFrame));
FramerateSecPerFrameIdx = 0;
FramerateSecPerFrameIdx = FramerateSecPerFrameCount = 0;
FramerateSecPerFrameAccum = 0.0f;
WantCaptureMouseNextFrame = WantCaptureKeyboardNextFrame = WantTextInputNextFrame = -1;
memset(TempBuffer, 0, sizeof(TempBuffer));