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Optimisation, removed the duplicate ClipRectStack in ImGuiWindow, storing single value
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parent
d6987d1586
commit
b92396b46a
43
imgui.cpp
43
imgui.cpp
@ -1442,8 +1442,8 @@ struct ImGuiWindow
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ImGuiDrawContext DC; // Temporary per-window data, reset at the beginning of the frame
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ImVector<ImGuiID> IDStack; // ID stack. ID are hashes seeded with the value at the top of the stack
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ImVector<ImVec4> ClipRectStack; // Scissoring / clipping rectangle. x1, y1, x2, y2.
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ImRect ClippedRect; // = ClipRectStack.front() after setup in Begin()
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ImVec4 ClipRect; // = DrawList->clip_rect_stack.back(). Scissoring / clipping rectangle. x1, y1, x2, y2.
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ImRect ClippedWindowRect; // = ClipRect just after setup in Begin()
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int LastFrameDrawn;
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float ItemWidthDefault;
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ImGuiSimpleColumns MenuColumns; // Simplified columns storage for menu items
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@ -2358,25 +2358,25 @@ static void PushClipRect(const ImVec4& clip_rect, bool clipped = true)
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ImGuiWindow* window = GetCurrentWindow();
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ImVec4 cr = clip_rect;
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if (clipped && !window->ClipRectStack.empty())
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if (clipped)
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{
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// Clip with existing clip rect
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const ImVec4 cur_cr = window->ClipRectStack.back();
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const ImVec4 cur_cr = window->ClipRect;
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cr = ImVec4(ImMax(cr.x, cur_cr.x), ImMax(cr.y, cur_cr.y), ImMin(cr.z, cur_cr.z), ImMin(cr.w, cur_cr.w));
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}
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cr.z = ImMax(cr.x, cr.z);
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cr.w = ImMax(cr.y, cr.w);
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IM_ASSERT(cr.x <= cr.z && cr.y <= cr.w);
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window->ClipRectStack.push_back(cr);
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window->ClipRect = cr;
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window->DrawList->PushClipRect(cr);
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}
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static void PopClipRect()
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{
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ImGuiWindow* window = GetCurrentWindow();
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window->ClipRectStack.pop_back();
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window->DrawList->PopClipRect();
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window->ClipRect = window->DrawList->clip_rect_stack.back();
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}
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void ImGui::Render()
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@ -2812,9 +2812,8 @@ void ImGui::CalcListClipping(int items_count, float items_height, int* out_items
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}
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const ImVec2 pos = window->DC.CursorPos;
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const ImVec4 clip_rect = window->ClipRectStack.back();
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const float clip_y1 = clip_rect.y;
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const float clip_y2 = clip_rect.w;
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const float clip_y1 = window->ClipRect.y;
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const float clip_y2 = window->ClipRect.w;
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int start = (int)((clip_y1 - pos.y) / items_height);
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int end = (int)((clip_y2 - pos.y) / items_height);
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@ -2837,7 +2836,7 @@ static ImGuiWindow* FindHoveredWindow(ImVec2 pos, bool excluding_childs)
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continue;
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// Using the clipped AABB so a child window will typically be clipped by its parent.
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ImRect bb(window->ClippedRect.Min - g.Style.TouchExtraPadding, window->ClippedRect.Max + g.Style.TouchExtraPadding);
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ImRect bb(window->ClippedWindowRect.Min - g.Style.TouchExtraPadding, window->ClippedWindowRect.Max + g.Style.TouchExtraPadding);
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if (bb.Contains(pos))
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return window;
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}
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@ -2854,11 +2853,7 @@ static bool IsMouseHoveringRect(const ImRect& rect)
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// Clip
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ImRect rect_clipped = rect;
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if (!window->ClipRectStack.empty())
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{
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const ImVec4 clip_rect = window->ClipRectStack.back();
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rect_clipped.Clip(ImRect(ImVec2(clip_rect.x, clip_rect.y), ImVec2(clip_rect.z, clip_rect.w)));
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}
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rect_clipped.Clip(window->ClipRect);
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// Expand for touch input
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const ImRect rect_for_touch(rect_clipped.Min - g.Style.TouchExtraPadding, rect_clipped.Max + g.Style.TouchExtraPadding);
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@ -3066,7 +3061,7 @@ bool ImGui::IsAnyItemActive()
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bool ImGui::IsItemVisible()
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{
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ImGuiWindow* window = GetCurrentWindow();
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ImRect r(window->ClipRectStack.back());
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ImRect r(window->ClipRect);
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return r.Overlaps(window->DC.LastItemRect);
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}
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@ -3659,14 +3654,14 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
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window->Active = true;
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window->BeginCount = 0;
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window->DrawList->Clear();
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window->ClipRectStack.resize(0);
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window->ClipRect = ImVec4(-FLT_MAX,-FLT_MAX,+FLT_MAX,+FLT_MAX);
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window->LastFrameDrawn = current_frame;
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window->IDStack.resize(1);
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// Setup texture, outer clipping rectangle
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window->DrawList->PushTextureID(g.Font->ContainerAtlas->TexID);
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if ((flags & ImGuiWindowFlags_ChildWindow) && !(flags & (ImGuiWindowFlags_ComboBox|ImGuiWindowFlags_Popup)))
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PushClipRect(parent_window->ClipRectStack.back());
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PushClipRect(parent_window->ClipRect);
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else
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PushClipRect(GetVisibleRect());
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@ -4053,8 +4048,8 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
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}
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// Save clipped aabb so we can access it in constant-time in FindHoveredWindow()
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window->ClippedRect = window->Rect();
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window->ClippedRect.Clip(window->ClipRectStack.front());
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window->ClippedWindowRect = window->Rect();
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window->ClippedWindowRect.Clip(window->ClipRect);
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// Pressing CTRL+C while holding on a window copy its content to the clipboard
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// This works but 1. doesn't handle multiple Begin/End pairs, 2. recursing into another Begin/End pair - so we need to work that out and add better logging scope.
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@ -4089,7 +4084,7 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
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if (!(flags & ImGuiWindowFlags_AlwaysAutoResize) && window->AutoFitFramesX <= 0 && window->AutoFitFramesY <= 0)
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{
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const ImVec4 clip_rect_t = window->ClipRectStack.back();
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const ImVec4 clip_rect_t = window->ClipRect;
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window->Collapsed |= (clip_rect_t.x >= clip_rect_t.z || clip_rect_t.y >= clip_rect_t.w);
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}
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@ -4968,7 +4963,7 @@ void ImGui::TextUnformatted(const char* text, const char* text_end)
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const char* line = text;
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const float line_height = ImGui::GetTextLineHeight();
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const ImVec2 text_pos = window->DC.CursorPos + ImVec2(0.0f, window->DC.CurrentLineTextBaseOffset);
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const ImVec4 clip_rect = window->ClipRectStack.back();
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const ImVec4 clip_rect = window->ClipRect;
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ImVec2 text_size(0,0);
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if (text_pos.y <= clip_rect.w)
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@ -8499,7 +8494,7 @@ static bool IsClippedEx(const ImRect& bb, const ImGuiID* id, bool clip_even_when
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ImGuiState& g = *GImGui;
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ImGuiWindow* window = GetCurrentWindow();
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if (!bb.Overlaps(ImRect(window->ClipRectStack.back())))
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if (!bb.Overlaps(ImRect(window->ClipRect)))
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{
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if (!id || *id != GImGui->ActiveId)
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if (clip_even_when_logged || !g.LogEnabled)
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@ -8511,7 +8506,7 @@ static bool IsClippedEx(const ImRect& bb, const ImGuiID* id, bool clip_even_when
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bool ImGui::IsRectVisible(const ImVec2& size)
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{
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ImGuiWindow* window = GetCurrentWindow();
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ImRect r(window->ClipRectStack.back());
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ImRect r(window->ClipRect);
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return r.Overlaps(ImRect(window->DC.CursorPos, window->DC.CursorPos + size));
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}
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