Enabled viewports.

private/raid/application.cpp

@@ -136,8 +136,9 @@ int Application::run(int argc, char** argv)
         ImGui_ImplSDL3_NewFrame();
         ImGui::NewFrame();
 
-        ImGui::SetNextWindowPos({0, 0});
-        ImGui::SetNextWindowSize(imguiIO.DisplaySize);
+        ImGui::SetNextWindowPos(ImGui::GetMainViewport()->Pos);
+        ImGui::SetNextWindowSize(ImGui::GetMainViewport()->Size);
+        ImGui::SetNextWindowViewport(ImGui::GetMainViewport()->ID);
 
         ImGui::Begin("##main", nullptr, mMainWindowFlags);
         render();
@@ -149,6 +150,13 @@ int Application::run(int argc, char** argv)
         glClear(GL_COLOR_BUFFER_BIT);
         ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
 
+        if (imguiIO.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
+        {
+            ImGui::UpdatePlatformWindows();
+            ImGui::RenderPlatformWindowsDefault();
+            SDL_GL_MakeCurrent(mWindow, mGLContext);
+        }
+
         SDL_GL_SwapWindow(mWindow);
 
         if (imguiIO.WantSaveIniSettings)
@@ -190,6 +198,15 @@ bool Application::loadFont(const fs::path& path)
     return true;
 }
 
+void Application::configureImgui()
+{
+    ImGuiIO& imguiIO = ImGui::GetIO();
+    imguiIO.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
+    imguiIO.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;
+    imguiIO.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;
+    imguiIO.ConfigViewportsNoAutoMerge = true;
+}
+
 void Application::handleMessage(const Message& message)
 {
     switch (message.severity)
@@ -242,7 +259,7 @@ bool Application::initSDL()
             | SDL_WINDOW_RESIZABLE
             | SDL_WINDOW_HIGH_PIXEL_DENSITY;
     mWindow = SDL_CreateWindow(
-        /* title = */ "RAID",
+        /* title = */ getWindowTitle().c_str(),
         /* w     = */ 1280,
         /* h     = */ 720,
         /* flags = */ WINDOW_FLAGS
@@ -279,9 +296,9 @@ bool Application::initImGui()
 
     loadImGuiConfig();
 
+    configureImgui();
+
     ImGuiIO& imguiIO = ImGui::GetIO();
-    imguiIO.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
-    imguiIO.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;
     imguiIO.IniFilename = nullptr; // disable automatic saving of settings
 
     // default style
@@ -389,6 +406,7 @@ void QuickApp::init(QuickAppOptions options)
     MIJIN_ASSERT_FATAL(options.callbacks.render, "Missing render callback.");
     mRenderCallback = std::move(options.callbacks.render);
     mFolderName = std::move(options.folderName);
+    mWindowTitle = std::move(options.windowTitle);
     setMainWindowFlags(options.mainWindowFlags);
 }
 
@@ -408,6 +426,11 @@ std::string QuickApp::getFolderName()
     return mFolderName;
 }
 
+std::string QuickApp::getWindowTitle()
+{
+    return mWindowTitle;
+}
+
 int runQuick(int argc, char* argv[], QuickAppOptions options)
 {
     QuickApp app;

private/raid_test/main.cpp

@@ -34,6 +34,7 @@ int main(int argc, char* argv[])
             .render = &render
         },
         .folderName = "raid_test_app",
+        .windowTitle = "RAID Test App",
         .mainWindowFlags = raid::DEFAULT_MAIN_WINDOW_FLAGS | ImGuiWindowFlags_MenuBar
     });
 }