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Shuffle a few internal context fields to reduce padding.

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ocornut 2025-10-28 19:01:57 +01:00
parent a1632c6116
commit 8019d39545
3 changed files with 27 additions and 26 deletions
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26
imgui_internal.h
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@ -2164,6 +2164,14 @@ struct ImGuiContextHook
struct ImGuiContext
{
bool Initialized;
bool WithinFrameScope; // Set by NewFrame(), cleared by EndFrame()
bool WithinFrameScopeWithImplicitWindow; // Set by NewFrame(), cleared by EndFrame() when the implicit debug window has been pushed
bool TestEngineHookItems; // Will call test engine hooks: ImGuiTestEngineHook_ItemAdd(), ImGuiTestEngineHook_ItemInfo(), ImGuiTestEngineHook_Log()
int FrameCount;
int FrameCountEnded;
int FrameCountRendered;
double Time;
char ContextName[16]; // Storage for a context name (to facilitate debugging multi-context setups)
ImGuiIO IO;
ImGuiPlatformIO PlatformIO;
ImGuiStyle Style;
@ -2176,17 +2184,8 @@ struct ImGuiContext
float FontRasterizerDensity; // Current font density. Used by all calls to GetFontBaked().
float CurrentDpiScale; // Current window/viewport DpiScale == CurrentViewport->DpiScale
ImDrawListSharedData DrawListSharedData;
double Time;
int FrameCount;
int FrameCountEnded;
int FrameCountRendered;
ImGuiID WithinEndChildID; // Set within EndChild()
bool WithinFrameScope; // Set by NewFrame(), cleared by EndFrame()
bool WithinFrameScopeWithImplicitWindow; // Set by NewFrame(), cleared by EndFrame() when the implicit debug window has been pushed
bool GcCompactAll; // Request full GC
bool TestEngineHookItems; // Will call test engine hooks: ImGuiTestEngineHook_ItemAdd(), ImGuiTestEngineHook_ItemInfo(), ImGuiTestEngineHook_Log()
void* TestEngine; // Test engine user data
char ContextName[16]; // Storage for a context name (to facilitate debugging multi-context setups)
// Inputs
ImVector<ImGuiInputEvent> InputEventsQueue; // Input events which will be trickled/written into IO structure.
@ -2237,11 +2236,11 @@ struct ImGuiContext
bool ActiveIdHasBeenEditedBefore; // Was the value associated to the widget Edited over the course of the Active state.
bool ActiveIdHasBeenEditedThisFrame;
bool ActiveIdFromShortcut;
ImS8 ActiveIdMouseButton;
ImGuiID ActiveIdDisabledId; // When clicking a disabled item we set ActiveId=window->MoveId to avoid interference with widget code. Actual item ID is stored here.
int ActiveIdMouseButton : 8;
ImVec2 ActiveIdClickOffset; // Clicked offset from upper-left corner, if applicable (currently only set by ButtonBehavior)
ImGuiWindow* ActiveIdWindow;
ImGuiInputSource ActiveIdSource; // Activating source: ImGuiInputSource_Mouse OR ImGuiInputSource_Keyboard OR ImGuiInputSource_Gamepad
ImGuiWindow* ActiveIdWindow;
ImGuiID ActiveIdPreviousFrame;
ImGuiDeactivatedItemData DeactivatedItemData;
ImGuiDataTypeStorage ActiveIdValueOnActivation; // Backup of initial value at the time of activation. ONLY SET BY SPECIFIC WIDGETS: DragXXX and SliderXXX.
@ -2271,6 +2270,7 @@ struct ImGuiContext
ImGuiLastItemData LastItemData; // Storage for last submitted item (setup by ItemAdd)
ImGuiNextWindowData NextWindowData; // Storage for SetNextWindow** functions
bool DebugShowGroupRects;
bool GcCompactAll; // Request full GC
// Shared stacks
ImGuiCol DebugFlashStyleColorIdx; // (Keep close to ColorStack to share cache line)
@ -2481,6 +2481,7 @@ struct ImGuiContext
// Capture/Logging
bool LogEnabled; // Currently capturing
bool LogLineFirstItem;
ImGuiLogFlags LogFlags; // Capture flags/type
ImGuiWindow* LogWindow;
ImFileHandle LogFile; // If != NULL log to stdout/ file
@ -2488,7 +2489,6 @@ struct ImGuiContext
const char* LogNextPrefix; // See comment in LogSetNextTextDecoration(): doesn't copy underlying data, use carefully!
const char* LogNextSuffix;
float LogLinePosY;
bool LogLineFirstItem;
int LogDepthRef;
int LogDepthToExpand;
int LogDepthToExpandDefault; // Default/stored value for LogDepthMaxExpand if not specified in the LogXXX function call.
@ -2655,9 +2655,9 @@ struct IMGUI_API ImGuiWindow
short BeginOrderWithinParent; // Begin() order within immediate parent window, if we are a child window. Otherwise 0.
short BeginOrderWithinContext; // Begin() order within entire imgui context. This is mostly used for debugging submission order related issues.
short FocusOrder; // Order within WindowsFocusOrder[], altered when windows are focused.
ImGuiDir AutoPosLastDirection;
ImS8 AutoFitFramesX, AutoFitFramesY;
bool AutoFitOnlyGrows;
ImGuiDir AutoPosLastDirection;
ImS8 HiddenFramesCanSkipItems; // Hide the window for N frames
ImS8 HiddenFramesCannotSkipItems; // Hide the window for N frames while allowing items to be submitted so we can measure their size
ImS8 HiddenFramesForRenderOnly; // Hide the window until frame N at Render() time only