Update ImGui to 1.91.1

src/Utils.cpp

@@ -177,7 +177,8 @@ bool IsLuaCData(const sol::object& acpObject)
 
 float GetAlignedItemWidth(const int64_t acItemsCount)
 {
-    return (ImGui::GetWindowContentRegionWidth() - static_cast<float>(acItemsCount - 1) * ImGui::GetStyle().ItemSpacing.x) / static_cast<float>(acItemsCount);
+    return (ImGui::GetContentRegionAvail().x - static_cast<float>(acItemsCount - 1) * ImGui::GetStyle().ItemSpacing.x) /
+           static_cast<float>(acItemsCount);
 }
 
 float GetCenteredOffsetForText(const char* acpText)

src/d3d12/D3D12.h

@@ -3,6 +3,8 @@
 #include "common/D3D12Downlevel.h"
 #include "window/Window.h"
 
+extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
 using TPresentD3D12Downlevel = HRESULT(ID3D12CommandQueueDownlevel*, ID3D12GraphicsCommandList*, ID3D12Resource*, HWND, D3D12_DOWNLEVEL_PRESENT_FLAGS);
 using TCreateCommittedResource =
     HRESULT(ID3D12Device*, const D3D12_HEAP_PROPERTIES*, D3D12_HEAP_FLAGS, const D3D12_RESOURCE_DESC*, D3D12_RESOURCE_STATES, const D3D12_CLEAR_VALUE*, const IID*, void**);

src/d3d12/D3D12_Functions.cpp

@@ -19,8 +19,6 @@ bool D3D12::ResetState(const bool acClearDownlevelBackbuffers, const bool acDest
         {
             for (auto i = 0; i < drawData.CmdListsCount; ++i)
                 IM_DELETE(drawData.CmdLists[i]);
-            delete[] drawData.CmdLists;
-            drawData.CmdLists = nullptr;
             drawData.Clear();
         }
 
@@ -497,13 +495,13 @@ void D3D12::PrepareUpdate()
 
     for (auto i = 0; i < drawData.CmdListsCount; ++i)
         IM_DELETE(drawData.CmdLists[i]);
-    delete[] drawData.CmdLists;
-    drawData.CmdLists = nullptr;
     drawData.Clear();
 
     drawData = *ImGui::GetDrawData();
 
-    auto** copiedDrawLists = new ImDrawList*[drawData.CmdListsCount];
+    ImVector<ImDrawList*> copiedDrawLists;
+    copiedDrawLists.resize(drawData.CmdListsCount);
+
     for (auto i = 0; i < drawData.CmdListsCount; ++i)
         copiedDrawLists[i] = drawData.CmdLists[i]->CloneOutput();
     drawData.CmdLists = copiedDrawLists;

src/imgui_impl/dx12.h

@@ -2,39 +2,46 @@
 // This needs to be used along with a Platform Backend (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about
-//  ImTextureID! [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+//  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Large meshes support (64k+ vertices) with 16-bit indices.
+//  [X] Renderer: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
 
 // Important: to compile on 32-bit systems, this backend requires code to be compiled with '#define ImTextureID ImU64'.
-// This is because we need ImTextureID to carry a 64-bit value and by default ImTextureID is defined as void*.
-// This define is set in the example .vcxproj file and need to be replicated in your app or by adding it to your
-// imconfig.h file.
+// See imgui_impl_dx12.cpp file for details.
 
-// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
-// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
-// Read online: https://github.com/ocornut/imgui/tree/master/docs
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
 
 #pragma once
-#include "imgui.h" // IMGUI_IMPL_API
+#include "imgui.h"      // IMGUI_IMPL_API
+#ifndef IMGUI_DISABLE
+#include <dxgiformat.h> // DXGI_FORMAT
 
 struct ID3D12Device;
 struct ID3D12DescriptorHeap;
 struct ID3D12GraphicsCommandList;
 struct D3D12_CPU_DESCRIPTOR_HANDLE;
 struct D3D12_GPU_DESCRIPTOR_HANDLE;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+
 // cmd_list is the command list that the implementation will use to render imgui draw lists.
 // Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate
 // render target and descriptor heap that contains font_srv_cpu_desc_handle/font_srv_gpu_desc_handle.
-// font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal
-// font texture.
-IMGUI_IMPL_API bool ImGui_ImplDX12_Init(
-    ID3D12Device* apDevice, int aNumFramesInFlight, DXGI_FORMAT aRTVFormat, ID3D12DescriptorHeap* apSRVHeapDesc, D3D12_CPU_DESCRIPTOR_HANDLE aFontSRVDescCPU,
-    D3D12_GPU_DESCRIPTOR_HANDLE aFontSRVDescGPU);
-IMGUI_IMPL_API void ImGui_ImplDX12_Shutdown();
-IMGUI_IMPL_API void ImGui_ImplDX12_NewFrame(ID3D12CommandQueue* apCommandQueue);
-IMGUI_IMPL_API void ImGui_ImplDX12_RenderDrawData(ImDrawData* apDrawData, ID3D12GraphicsCommandList* apCommandLists);
+// font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture.
+IMGUI_IMPL_API bool     ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* cbv_srv_heap,
+                                            D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle);
+IMGUI_IMPL_API void     ImGui_ImplDX12_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplDX12_NewFrame(ID3D12CommandQueue* apCommandQueue);
+IMGUI_IMPL_API void     ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* graphics_command_list);
 
 // Use if you want to reset your rendering device without losing Dear ImGui state.
-IMGUI_IMPL_API void ImGui_ImplDX12_InvalidateDeviceObjects();
-IMGUI_IMPL_API bool ImGui_ImplDX12_CreateDeviceObjects(ID3D12CommandQueue* apCommandQueue);
+IMGUI_IMPL_API void     ImGui_ImplDX12_InvalidateDeviceObjects();
+IMGUI_IMPL_API bool     ImGui_ImplDX12_CreateDeviceObjects(ID3D12CommandQueue* apCommandQueue);
+
+#endif // #ifndef IMGUI_DISABLE