ohlidalp
commented
1 year ago I tried replacing our DearIMGUI integration (v 1.75 - very outdated) with OGRE's builtin DearImguiOverlay component. UPDATE: It's a success, just some finishing touches are needed, see below.
Status:
- game builds and runs
- UI draws correctly ~except it uses the builtin font~ UPDATE: font fixed.
- ~Under Debug I get asserts about
NewFrame()/EndFrame()mismatches.~ UPDATE: fixed. - ~The GUI interferes with Renderdash dashboard again - I'm not sure how to selectively disable it.~ UPDATE: Fixed using
Overlay::setVisible(). - [FIXED] ~The VehicleAI panel glitches out in some cases and makes all UI invisible.~
- The vehicle-buttons side-panel isn't working - headers cannot be expanded.
- OGRE's integrated imgui uses 16-bit indices (ours used 32-bit) so I get Debug asserts about too many vertices - I asked Paroj to add a build option for this: https://github.com/OGRECave/ogre/issues/2772
This is a first step in migrating from self-shipped OIS library to standard SDL2 and OGRE's builtin DearIMGUI integration. I've based it on our (pretty mature already) OGRE13 port to get the latest tech and support.
Only mouse+keyboard are working, controllers and joysticks (+ force feedback) are temporarily disabled.
OGRE provides Bites component with generic ApplicationContext that runs on many platforms and powers OGRE SampleBrowser. It includes DearIMGUI integration, RTSS setup, window creation and generic input API for all devices. I tried replacing our OIS events + API calls 1:1 with Bites events and SDL API calls and it turns out to work just fine. I had to also replace the function which opens render window, as SDL input events don't work otherwise. Everything else remains unchanged. Also our (very outdated) DearIMGUI integration remains in place, with only updated input processing (based on OgreBites code, anyway).