ImGui.NET VS rlImGui

Now I'm trying to integrate ImGui into the engine. One solution I found was using this but as far as I can tell it locks you into using OpenGL which is something I would like to avoid as one of the main selling points of SDL2 for me is it's abstraction over the rendering backend.

In additiona to imgui wrapper which works great with NativeAOT, only slight nudge and you have 10Mb executable. With all deps it's 13Mb. Also there Avalonia mentioned in sibling message which work great and in 11.0-preview5 probably would not need any additional configuraiton. In case if OP is have soft spot for web tech, he can use photino.Blazor which also with slight modifications would simply works and produce 27Mb executable.

Imgui gets rendered using ImguiRenderer provided here in the example: https://github.com/mellinoe/ImGui.NET/tree/master/src/ImGui.NET.SampleProgram.XNA

I'm converting rlImGui from C++ to C# so I can use it with ImGui.NET and Raylib-cs but I'm getting stuck at a couple places. I don't know how to convert line 331 to C# since in ImGui.NET cmd.UserCallback is an IntPtr and not something I can call. I did a quick google search and you can use the Marshal library to convert it to a callable delegate but I think you need to also have the delegate known to do that. There's also line 82 but that is specific to Raylib. The function it calls does not seem to be included in Raylib-cs. Also, rlImGui keeps using a Texture type but that is not defined in Raylib-cs or ImGui.NET. I assume I can substitute it with Texture2D from Raylib-cs but I'm not to the point in porting to see if Texture2D has the necessary fields/properties/methods.

ImGui.NET 1.87.3 (using the example implementation)

If you use this example implementation for XNA/MonoGame, you can just use ImGuiRenderer.BindTexture() which returns an IntPtr.

The only thing I could really think of is something like ImGui for C# (https://github.com/mellinoe/ImGui.NET) but I've never used it. It's going to give you some simple wrappers around ImGui (https://github.com/ocornut/imgui) but even this is going to lock you into the UI framework -- you can't just "draw a rectangle" per se and use it as a "control." Do note however this is an "immediate mode" GUI which is different from how most general desktop windowing systems work in "retained mode" (which are typically event driven, which saves on computing power to not draw the same stuff over and over).

include(cmake/CPM.cmake) function(raylib_imgui_setup_dependencies) message(STATUS "Include Dear ImGui") FetchContent_Declare( ImGui GIT_REPOSITORY https://github.com/ocornut/imgui GIT_TAG 277ae93c41314ba5f4c7444f37c4319cdf07e8cf) # v1.90.4 FetchContent_MakeAvailable(ImGui) FetchContent_GetProperties(ImGui SOURCE_DIR IMGUI_DIR) add_library( imgui STATIC ${imgui_SOURCE_DIR}/imgui.cpp ${imgui_SOURCE_DIR}/imgui_draw.cpp ${imgui_SOURCE_DIR}/imgui_widgets.cpp ${imgui_SOURCE_DIR}/imgui_tables.cpp) target_include_directories(imgui INTERFACE ${imgui_SOURCE_DIR}) include(cmake/CPM.cmake) message(STATUS "Include dbg-macro") cpmaddpackage( "gh:sharkdp/dbg-macro#fb9976f410f8b29105818b20278cd0be0e853fe8" )# v0.5.1 message(STATUS "Include fmtlib") cpmaddpackage("gh:fmtlib/fmt#e69e5f977d458f2650bb346dadf2ad30c5320281" )# 10.x message(STATUS "Include raylib") cpmaddpackage("gh:raysan5/raylib#ae50bfa2cc569c0f8d5bc4315d39db64005b1b0" )# v5.0 message(STATUS "Include spdlog") cpmaddpackage("gh:gabime/spdlog#7c02e204c92545f869e2f04edaab1f19fe8b19fd" )# v1.13.0 message(STATUS "Include rlImGui") FetchContent_Declare( rlImGui GIT_REPOSITORY https://github.com/raylib-extras/rlImGui GIT_TAG d765c1ef3d37cf939f88aaa272a59a2713d654c9) FetchContent_MakeAvailable(rlImGui) FetchContent_GetProperties(rlImGui SOURCE_DIR RLIMGUI_DIR) add_library(rlimgui STATIC ${rlimgui_SOURCE_DIR}/rlImgui.cpp) target_link_libraries(rlimgui PRIVATE imgui raylib) target_include_directories(rlimgui INTERFACE ${rlimgui_SOURCE_DIR}) endfunction()

I'm converting rlImGui from C++ to C# so I can use it with ImGui.NET and Raylib-cs but I'm getting stuck at a couple places. I don't know how to convert line 331 to C# since in ImGui.NET cmd.UserCallback is an IntPtr and not something I can call. I did a quick google search and you can use the Marshal library to convert it to a callable delegate but I think you need to also have the delegate known to do that. There's also line 82 but that is specific to Raylib. The function it calls does not seem to be included in Raylib-cs. Also, rlImGui keeps using a Texture type but that is not defined in Raylib-cs or ImGui.NET. I assume I can substitute it with Texture2D from Raylib-cs but I'm not to the point in porting to see if Texture2D has the necessary fields/properties/methods.

raylib extra libraries cleanup: raylib has been on diet and all the extra libraries included on previous releases have been removed from raylib. Now raylib only includes the original 7 raylib modules: rcore, rlgl, rshapes, rtextures, rtext, rmodels and raudio. But no worries, extra libraries have not been deleted, they have been moved to their own repos for better maintainability and more focus on its functionality. The libraries moved out from raylib repo are: raygui, physac, rmem, reasings and raudio (standalone mode). On that same line, a new amazing GitHub group: raylib-extras has been created by @JeffM2501 to contain raylib extra libraries as well as other raylib add-ons provided by the community. Jeff has done an amazing work on that line, providing multiple libraries and examples for raylib, like custom first-person and third person camera systems, Dear ImGui raylib integration, multiple specific examples and even a complete RPG Game Example! Great work Jeff! :D