Sketchy Multi Viewports

modules/ImguiModule/ImguiModule.cpp

@@ -52,7 +52,7 @@ void ImguiModule::onLoad() {
 
     io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;         // Enable Docking
     io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;       // Enable Multi-Viewport / Platform Windows
-
+    
 #ifdef CUSTOMFONT
     io.Fonts->AddFontFromFileTTF(STRINGIZE_VALUE_OF(CUSTOMFONT), 13.0f);
 #endif
@@ -60,6 +60,18 @@ void ImguiModule::onLoad() {
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsLight();
 
+    // Setup scaling
+    ImGuiStyle& style = ImGui::GetStyle();
+    io.ConfigDpiScaleFonts = true;          // [Experimental] Automatically overwrite style.FontScaleDpi in Begin() when Monitor DPI changes. This will scale fonts but _NOT_ scale sizes/padding for now.
+    io.ConfigDpiScaleViewports = true;      // [Experimental] Scale Dear ImGui and Platform Windows when Monitor DPI changes.
+
+    // When viewports are enabled we tweak WindowRounding/WindowBg so platform windows can look identical to regular ones.
+    if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
+    {
+        style.WindowRounding = 0.0f;
+        style.Colors[ImGuiCol_WindowBg].w = 1.0f;
+    }
+
     // Setup Platform/Renderer backends
     if(!windowInit())
         std::cout << "windowInit failed\n";
@@ -73,9 +85,12 @@ void ImguiModule::onLoad() {
 
         rendererRenderDrawData();
 
-        rendererNewFrame();
-        windowNewFrame();
-        ImGui::NewFrame();
+        if(ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable) {
+            ImGui::UpdatePlatformWindows();
+            ImGui::RenderPlatformWindowsDefault();
+
+            window->getWindowImpl().restoreContext();
+        }
     });
 
     rcmd_it = --wm->getRenderer()->getCmdList().end()++;
@@ -92,9 +107,14 @@ void ImguiModule::onLoad() {
     rendererNewFrame();
     windowNewFrame();
     ImGui::NewFrame();
-
 }
 
+void ImguiModule::run() {
+    rendererNewFrame();
+    windowNewFrame();
+    ImGui::NewFrame();
+};
+
 bool ImguiModule::onEvent(const Archimedes::Event &e) {
 
     return false;