From fd319405e517edadcb1dab58fce6c1c07fc3106e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hatvani=20Tam=C3=A1s?= <hatvanitamas09@gmail.com>
Date: Mon, 6 Apr 2026 15:06:14 +0200
Subject: [PATCH] added onrender function to use sdl render in client, enabled
 multiviewports in imgui

---
 SakuraCore/src/Application.cpp | 11 +++++++++++
 SakuraCore/src/Layer.h         |  1 +
 SakuraCore/src/imguiinit.cpp   |  1 +
 3 files changed, 13 insertions(+)

diff --git a/SakuraCore/src/Application.cpp b/SakuraCore/src/Application.cpp
index 2bc35d2..468be10 100644
--- a/SakuraCore/src/Application.cpp
+++ b/SakuraCore/src/Application.cpp
@@ -3,6 +3,7 @@
 #include "Layer.h"
 #include "Log.h"
 #include "SDL3/SDL_events.h"
+#include "SDL3/SDL_hints.h"
 #include "SDL3/SDL_main.h"
 #include "SDL3/SDL_render.h"
 #include "SDL3/SDL_stdinc.h"
@@ -136,6 +137,11 @@ void Application::Run() {
         }
 
         // Rendering
+
+        for (auto &layer : m_LayerStack) {
+            layer->OnRender();
+        }
+
         m_ImGui->Begin();
 
         SDL_SetRenderScale(m_Renderer, io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
@@ -148,6 +154,11 @@ void Application::Run() {
 
         m_ImGui->End();
 
+        if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) {
+            ImGui::UpdatePlatformWindows();
+            ImGui::RenderPlatformWindowsDefault();
+        }
+
         SDL_RenderPresent(m_Renderer);
     }
 }
diff --git a/SakuraCore/src/Layer.h b/SakuraCore/src/Layer.h
index 695a0e4..a24e6e9 100644
--- a/SakuraCore/src/Layer.h
+++ b/SakuraCore/src/Layer.h
@@ -17,6 +17,7 @@ public:
     virtual void OnAttach() {}
     virtual void OnDetach() {}
     virtual void OnImGuiRender() {}
+    virtual void OnRender() {}
     virtual void Suspend() { m_isActive = false; }
     virtual void Activate() { m_isActive = true; }
 
diff --git a/SakuraCore/src/imguiinit.cpp b/SakuraCore/src/imguiinit.cpp
index 4b562a8..d739c58 100644
--- a/SakuraCore/src/imguiinit.cpp
+++ b/SakuraCore/src/imguiinit.cpp
@@ -17,6 +17,7 @@ void ImGuiInit::Init() {
     ImGuiIO &io = ImGui::GetIO();
     io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
     io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
+    io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;
 
     ImGui::StyleColorsDark();