From e7ca13b7143d1a5f65ab1d1df1c47ee831050480 Mon Sep 17 00:00:00 2001
From: moonpower <xxmoonpower1234xx@gmail.com>
Date: Thu, 2 Apr 2026 14:03:42 +0200
Subject: [PATCH] Fix SDL surface backend texture refresh

---
 backends/imgui_impl_sdlsurface2.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/backends/imgui_impl_sdlsurface2.cpp b/backends/imgui_impl_sdlsurface2.cpp
index 36672742..331b7e26 100644
--- a/backends/imgui_impl_sdlsurface2.cpp
+++ b/backends/imgui_impl_sdlsurface2.cpp
@@ -975,7 +975,7 @@ bool ImGui_ImplSDLSurface2_Init(SDL_Surface* surface)
     ImGui_ImplSDLSurface2_InitSurfaceInfo(&bd->TargetInfo, surface);
     bd->FontSurface = ImGui_ImplSDLSurface2_CreateFontAtlasSurface();
     if (bd->FontSurface != nullptr)
-        io.Fonts->TexID = (ImTextureID)bd->FontSurface;
+        io.Fonts->SetTexID((ImTextureID)bd->FontSurface);
 
     return true;
 }
@@ -987,7 +987,8 @@ void ImGui_ImplSDLSurface2_Shutdown()
     ImGuiIO& io = ImGui::GetIO();
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
 
-    io.Fonts->TexID = nullptr;
+    if (io.Fonts->TexData != nullptr)
+        io.Fonts->TexData->SetTexID(ImTextureID_Invalid);
     io.BackendRendererName = nullptr;
     io.BackendRendererUserData = nullptr;
     platform_io.ClearRendererHandlers();