Modify(submodules): imgui

.gitmodules

@@ -9,7 +9,8 @@
 	url = https://github.com/g-truc/glm
 [submodule "Dependencies/imgui"]
 	path = Dependencies/imgui
-	url = https://github.com/Light3039/imgui
+	url = https://github.com/ocornut/imgui
+	branch = docking
 [submodule "Dependencies/entt"]
 	path = Dependencies/entt
 	url = https://github.com/skypjack/entt

Dependencies/CMakeLists.txt

@@ -0,0 +1,36 @@
+cmake_minimum_required(VERSION 3.14)
+
+if (CMAKE_COMPILER_IS_GNUCC)
+    add_compile_options(-w)
+endif()
+if(MSVC)
+    add_compile_options(/MP)
+    add_compile_options(/W0)
+endif()
+
+file(GLOB IMGUI_FILES true ABSOLUTE
+${CMAKE_CURRENT_SOURCE_DIR} *.cpp *.h)
+
+set(BACKENDS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/backends/)
+
+include_directories(${CMAKE_CURRENT_SOURCE_DIR})
+
+file(GLOB IMGUI_BACKEND_FILES true ABSOLUTE 
+${BACKENDS_DIR}imgui_impl_opengl3.cpp ${BACKENDS_DIR}imgui_impl_opengl3.h
+# ${BACKENDS_DIR}imgui_impl_vulkan.cpp ${BACKENDS_DIR}imgui_impl_vulkan.h
+${BACKENDS_DIR}imgui_impl_glfw.cpp ${BACKENDS_DIR}imgui_impl_glfw.h)
+
+if(WIN32)
+    file(GLOB IMGUI_WINDOWS_BACKEND_FILES true ABSOLUTE ${CMAKE_CURRENT_SOURCE_DIR}/backends/
+    ${BACKENDS_DIR}imgui_impl_dx11.cpp ${BACKENDS_DIR}imgui_impl_dx11.h
+    # ${BACKENDS_DIR}imgui_impl_dx12.cpp ${BACKENDS_DIR}imgui_impl_dx12.h
+    ${BACKENDS_DIR}imgui_impl_win32.cpp ${BACKENDS_DIR}imgui_impl_win32.h)
+
+    list(APPEND IMGUI_BACKEND_FILES ${IMGUI_WINDOWS_BACKEND_FILES})
+endif()
+
+add_compile_definitions(IMGUI_IMPL_OPENGL_LOADER_GLAD)
+include_directories(${DEPENDENCIES_DIR}GLAD/include)
+include_directories(${DEPENDENCIES_DIR}GLFW/include)
+
+add_library(imgui STATIC ${IMGUI_FILES} ${IMGUI_BACKEND_FILES})