From 98a66d8c8833af1d42474cde2ce0f0712a4496df Mon Sep 17 00:00:00 2001
From: ocornut <omarcornut@gmail.com>
Date: Tue, 4 Aug 2026 14:02:53 +0200
Subject: [PATCH] Viewports: fixed viewport->Framebuffer not being state on
 platform on backend where Platform_GetWindowFramebufferScale (value was only
 applied to DrawData).

---
 imgui.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/imgui.cpp b/imgui.cpp
index a943bccfb..995365862 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -6177,7 +6177,7 @@ static void InitViewportDrawData(ImGuiViewportP* viewport)
     draw_data->TotalVtxCount = draw_data->TotalIdxCount = 0;
     draw_data->DisplayPos = viewport->Pos;
     draw_data->DisplaySize = is_minimized ? ImVec2(0.0f, 0.0f) : viewport->Size;
-    draw_data->FramebufferScale = (viewport->FramebufferScale.x != 0.0f) ? viewport->FramebufferScale : g.IO.DisplayFramebufferScale;
+    draw_data->FramebufferScale = viewport->FramebufferScale;
     draw_data->OwnerViewport = viewport;
     draw_data->Textures = &g.PlatformIO.Textures;
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
@@ -17411,6 +17411,7 @@ ImGuiViewportP* ImGui::AddUpdateViewport(ImGuiWindow* window, ImGuiID id, const
     }
 
     viewport->Window = window;
+    viewport->FramebufferScale = g.IO.DisplayFramebufferScale; // Later overidden by Platform_GetWindowFramebufferScale() for platform having it
     viewport->LastFrameActive = g.FrameCount;
     viewport->UpdateWorkRect();
     IM_ASSERT(window == NULL || viewport->ID == window->ID);