From 8fd0a041355e3cfc6556bbe1e00f262d9a897946 Mon Sep 17 00:00:00 2001
From: Luca Lolli <920858+dashandslash@users.noreply.github.com>
Date: Thu, 1 Jun 2023 11:30:26 +0200
Subject: [PATCH] Backends: SDL3: Fix backend in docking/multi-viewports
 branch. (#6483)

The definition has been renamed to SDL_EVENT_DISPLAY_CONTENT_SCALE_CHANGED.
Display scale is no longer available in SDL_DisplayMode but can be retrieved using SDL_GetDisplayContentScale.
---
 backends/imgui_impl_sdl3.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/backends/imgui_impl_sdl3.cpp b/backends/imgui_impl_sdl3.cpp
index 063170166..47fe49f24 100644
--- a/backends/imgui_impl_sdl3.cpp
+++ b/backends/imgui_impl_sdl3.cpp
@@ -306,7 +306,7 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         case SDL_EVENT_DISPLAY_CONNECTED:
         case SDL_EVENT_DISPLAY_DISCONNECTED:
         case SDL_EVENT_DISPLAY_MOVED:
-        case SDL_EVENT_DISPLAY_SCALE_CHANGED:
+        case SDL_EVENT_DISPLAY_CONTENT_SCALE_CHANGED:
         {
             bd->WantUpdateMonitors = true;
             return true;
@@ -651,8 +651,7 @@ static void ImGui_ImplSDL3_UpdateMonitors()
         monitor.WorkSize = ImVec2((float)r.w, (float)r.h);
         // FIXME-VIEWPORT: On MacOS SDL reports actual monitor DPI scale, ignoring OS configuration. We may want to set
         //  DpiScale to cocoa_window.backingScaleFactor here.
-        const SDL_DisplayMode* display_mode = SDL_GetCurrentDisplayMode(display_id);
-        monitor.DpiScale = display_mode->display_scale;
+        monitor.DpiScale = SDL_GetDisplayContentScale(display_id);
         monitor.PlatformHandle = (void*)(intptr_t)n;
         platform_io.Monitors.push_back(monitor);
     }