Update ImGui external to 1.62

external/imgui/imconfig.h

@@ -1,38 +1,55 @@
 //-----------------------------------------------------------------------------
-// USER IMPLEMENTATION
-// This file contains compile-time options for ImGui.
-// Other options (memory allocation overrides, callbacks, etc.) can be set at runtime via the ImGuiIO structure - ImGui::GetIO().
+// COMPILE-TIME OPTIONS FOR DEAR IMGUI
+// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
+// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
+//-----------------------------------------------------------------------------
+// A) You may edit imconfig.h (and not overwrite it when updating imgui, or maintain a patch/branch with your modifications to imconfig.h)
+// B) or add configuration directives in your own file and compile with #define IMGUI_USER_CONFIG "myfilename.h"
+// If you do so you need to make sure that configuration settings are defined consistently _everywhere_ dear imgui is used, which include
+// the imgui*.cpp files but also _any_ of your code that uses imgui. This is because some compile-time options have an affect on data structures.
+// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
+// Call IMGUI_CHECKVERSION() from your .cpp files to verify that the data structures your files are using are matching the ones imgui.cpp is using.
 //-----------------------------------------------------------------------------
 
 #pragma once
 
 //---- Define assertion handler. Defaults to calling assert().
 //#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
+//#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
 
 //---- Define attributes of all API symbols declarations, e.g. for DLL under Windows.
 //#define IMGUI_API __declspec( dllexport )
 //#define IMGUI_API __declspec( dllimport )
 
-//---- Include imgui_user.h at the end of imgui.h
-//#define IMGUI_INCLUDE_IMGUI_USER_H
-
-//---- Don't implement default handlers for Windows (so as not to link with OpenClipboard() and others Win32 functions)
-//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS
-//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS
-
-//---- Don't implement help and test window functionality (ShowUserGuide()/ShowStyleEditor()/ShowTestWindow() methods will be empty)
-//#define IMGUI_DISABLE_TEST_WINDOWS
-
-//---- Don't define obsolete functions names
+//---- Don't define obsolete functions/enums names. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
 //#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
 
-//---- Pack colors to BGRA instead of RGBA (remove need to post process vertex buffer in back ends)
+//---- Don't implement demo windows functionality (ShowDemoWindow()/ShowStyleEditor()/ShowUserGuide() methods will be empty)
+//---- It is very strongly recommended to NOT disable the demo windows during development. Please read the comments in imgui_demo.cpp.
+//#define IMGUI_DISABLE_DEMO_WINDOWS
+
+//---- Don't implement some functions to reduce linkage requirements.
+//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc.
+//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] Don't implement default IME handler. Won't use and link with ImmGetContext/ImmSetCompositionWindow.
+//#define IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS             // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself if you don't want to link with vsnprintf.
+//#define IMGUI_DISABLE_MATH_FUNCTIONS                      // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 wrapper so you can implement them yourself. Declare your prototypes in imconfig.h.
+//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free(). You will need to call ImGui::SetAllocatorFunctions().
+
+//---- Include imgui_user.h at the end of imgui.h as a convenience
+//#define IMGUI_INCLUDE_IMGUI_USER_H
+
+//---- Pack colors to BGRA8 instead of RGBA8 (if you needed to convert from one to another anyway)
 //#define IMGUI_USE_BGRA_PACKED_COLOR
 
-//---- Implement STB libraries in a namespace to avoid conflicts
-//#define IMGUI_STB_NAMESPACE     ImGuiStb
+//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
+// By default the embedded implementations are declared static and not available outside of imgui cpp files.
+//#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
+//#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
+//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
 
 //---- Define constructor and implicit cast operators to convert back<>forth from your math types and ImVec2/ImVec4.
+// This will be inlined as part of ImVec2 and ImVec4 class declarations.
 /*
 #define IM_VEC2_CLASS_EXTRA                                                 \
         ImVec2(const MyVec2& f) { x = f.x; y = f.y; }                       \
@@ -43,12 +60,13 @@
         operator MyVec4() const { return MyVec4(x,y,z,w); }
 */
 
+//---- Use 32-bit vertex indices (default is 16-bit) to allow meshes with more than 64K vertices. Render function needs to support it.
+//#define ImDrawIdx unsigned int
+
 //---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
-//---- e.g. create variants of the ImGui::Value() helper for your low-level math types, or your own widgets/helpers.
 /*
 namespace ImGui
 {
-    void    Value(const char* prefix, const MyMatrix44& v, const char* float_format = NULL);
+    void MyFunction(const char* name, const MyMatrix44& v);
 }
 */
-