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Docking: Fixed rendering of outer decoration happening on non-visible docked window (#2623, #2109). Revealed by 0770449. We are actually better than before now, as previously those would get unnecessarily get rendered into a hidden draw list.

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This commit is contained in:
omar 2019-06-13 10:19:14 +02:00
parent d3d998a885
commit 07d3083279
1 changed files with 17 additions and 12 deletions
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5
imgui.cpp
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@ -6181,11 +6181,15 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_NavWindowingHighlight, g.NavWindowingHighlightAlpha * 0.25f), g.Style.WindowRounding);
}
const bool is_undocked_or_docked_visible = !window->DockIsActive || window->DockTabIsVisible;
// Since 1.71, child window can render their decoration (bg color, border, scrollbars, etc.) within their parent to save a draw call.
// When using overlapping child windows, this will break the assumption that child z-order is mapped to submission order.
// We disable this when the parent window has zero vertices, which is a common pattern leading to laying out multiple overlapping child.
// We also disabled this when we have dimming overlay behind this specific one child.
// FIXME: More code may rely on explicit sorting of overlapping child window and would need to disable this somehow. Please get in contact if you are affected.
if (is_undocked_or_docked_visible)
{
bool render_decorations_in_parent = false;
if ((flags & ImGuiWindowFlags_ChildWindow) && !(flags & ImGuiWindowFlags_Popup) && !window_is_child_tooltip)
if (window->DrawList->CmdBuffer.back().ElemCount == 0 && parent_window->DrawList->VtxBuffer.Size > 0)
@ -6199,6 +6203,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
if (render_decorations_in_parent)
window->DrawList = &window->DrawListInst;
}
// Draw navigation selection/windowing rectangle border
if (g.NavWindowingTargetAnim == window)