diff --git a/backends/imgui_impl_sdl.cpp b/backends/imgui_impl_sdl.cpp
index 676bb98..b9e4cfc 100644
--- a/backends/imgui_impl_sdl.cpp
+++ b/backends/imgui_impl_sdl.cpp
@@ -18,6 +18,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2021-06:29: *BREAKING CHANGE* Removed 'SDL_Window* window' parameter to ImGui_ImplSDL2_NewFrame() which was unnecessary.
 //  2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
 //  2021-03-22: Rework global mouse pos availability check listing supported platforms explicitly, effectively fixing mouse access on Raspberry Pi. (#2837, #3950)
 //  2020-05-25: Misc: Report a zero display-size when window is minimized, to be consistent with other backends.
@@ -377,20 +378,19 @@
     #undef MAP_ANALOG
 }
 
-void ImGui_ImplSDL2_NewFrame(SDL_Window* window)
+void ImGui_ImplSDL2_NewFrame()
 {
     ImGuiIO& io = ImGui::GetIO();
     ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
     IM_ASSERT(bd != NULL && "Did you call ImGui_ImplSDL2_Init()?");
-    IM_ASSERT(bd->Window == window); // FIXME: Should remove parameter from ImGui_ImplSDL2_NewFrame()
 
     // Setup display size (every frame to accommodate for window resizing)
     int w, h;
     int display_w, display_h;
-    SDL_GetWindowSize(window, &w, &h);
-    if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+    SDL_GetWindowSize(bd->Window, &w, &h);
+    if (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_MINIMIZED)
         w = h = 0;
-    SDL_GL_GetDrawableSize(window, &display_w, &display_h);
+    SDL_GL_GetDrawableSize(bd->Window, &display_w, &display_h);
     io.DisplaySize = ImVec2((float)w, (float)h);
     if (w > 0 && h > 0)
         io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
diff --git a/backends/imgui_impl_sdl.h b/backends/imgui_impl_sdl.h
index b1e8531..9b40a67 100644
--- a/backends/imgui_impl_sdl.h
+++ b/backends/imgui_impl_sdl.h
@@ -10,7 +10,7 @@
 // Missing features:
 //  [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME.
 
-// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. 
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
 // If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
 // Read online: https://github.com/ocornut/imgui/tree/master/docs
@@ -26,5 +26,9 @@
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForD3D(SDL_Window* window);
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForMetal(SDL_Window* window);
 IMGUI_IMPL_API void     ImGui_ImplSDL2_Shutdown();
-IMGUI_IMPL_API void     ImGui_ImplSDL2_NewFrame(SDL_Window* window);
+IMGUI_IMPL_API void     ImGui_ImplSDL2_NewFrame();
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event);
+
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+static inline void ImGui_ImplSDL2_NewFrame(SDL_Window*) { ImGui_ImplSDL2_NewFrame(); } // 1.84: removed unnecessary parameter
+#endif
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index fb6e068..74ee2ea 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -35,6 +35,11 @@
  VERSION 1.84 WIP (In Progress)
 -----------------------------------------------------------------------
 
+Breaking Changes:
+
+- Backends: SDL2: removed unnecessary SDL_Window* parameter from ImGui_ImplSDL2_NewFrame(). (#3244) [@funchal]
+  Kept inline redirection function (will obsolete).
+
 Other Changes:
 - Windows: ImGuiWindowFlags_UnsavedDocument/ImGuiTabItmeFlags_UnsavedDocument display a dot instead of a '*' so it
   is independent from font style. When in a tab, the dot is displayed at the same position as the close button.
diff --git a/examples/example_emscripten_opengl3/main.cpp b/examples/example_emscripten_opengl3/main.cpp
index 875ecbb..be338a8 100644
--- a/examples/example_emscripten_opengl3/main.cpp
+++ b/examples/example_emscripten_opengl3/main.cpp
@@ -123,7 +123,7 @@
 
     // Start the Dear ImGui frame
     ImGui_ImplOpenGL3_NewFrame();
-    ImGui_ImplSDL2_NewFrame(g_Window);
+    ImGui_ImplSDL2_NewFrame();
     ImGui::NewFrame();
 
     // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
diff --git a/examples/example_sdl_directx11/main.cpp b/examples/example_sdl_directx11/main.cpp
index c5ad42e..fc51715 100644
--- a/examples/example_sdl_directx11/main.cpp
+++ b/examples/example_sdl_directx11/main.cpp
@@ -113,7 +113,7 @@
 
         // Start the Dear ImGui frame
         ImGui_ImplDX11_NewFrame();
-        ImGui_ImplSDL2_NewFrame(window);
+        ImGui_ImplSDL2_NewFrame();
         ImGui::NewFrame();
 
         // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
diff --git a/examples/example_sdl_metal/main.mm b/examples/example_sdl_metal/main.mm
index efbccf4..caa86e6 100644
--- a/examples/example_sdl_metal/main.mm
+++ b/examples/example_sdl_metal/main.mm
@@ -116,7 +116,7 @@
 
             // Start the Dear ImGui frame
             ImGui_ImplMetal_NewFrame(renderPassDescriptor);
-            ImGui_ImplSDL2_NewFrame(window);
+            ImGui_ImplSDL2_NewFrame();
             ImGui::NewFrame();
 
             // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
diff --git a/examples/example_sdl_opengl2/main.cpp b/examples/example_sdl_opengl2/main.cpp
index 016b308..a81f856 100644
--- a/examples/example_sdl_opengl2/main.cpp
+++ b/examples/example_sdl_opengl2/main.cpp
@@ -94,7 +94,7 @@
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL2_NewFrame();
-        ImGui_ImplSDL2_NewFrame(window);
+        ImGui_ImplSDL2_NewFrame();
         ImGui::NewFrame();
 
         // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
diff --git a/examples/example_sdl_opengl3/main.cpp b/examples/example_sdl_opengl3/main.cpp
index 044e16f..2eb9565 100644
--- a/examples/example_sdl_opengl3/main.cpp
+++ b/examples/example_sdl_opengl3/main.cpp
@@ -164,7 +164,7 @@
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL3_NewFrame();
-        ImGui_ImplSDL2_NewFrame(window);
+        ImGui_ImplSDL2_NewFrame();
         ImGui::NewFrame();
 
         // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
diff --git a/examples/example_sdl_vulkan/main.cpp b/examples/example_sdl_vulkan/main.cpp
index db577e5..2c01afe 100644
--- a/examples/example_sdl_vulkan/main.cpp
+++ b/examples/example_sdl_vulkan/main.cpp
@@ -487,7 +487,7 @@
 
         // Start the Dear ImGui frame
         ImGui_ImplVulkan_NewFrame();
-        ImGui_ImplSDL2_NewFrame(window);
+        ImGui_ImplSDL2_NewFrame();
         ImGui::NewFrame();
 
         // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
diff --git a/imgui.h b/imgui.h
index c7df32d..5253972 100644
--- a/imgui.h
+++ b/imgui.h
@@ -61,7 +61,7 @@
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
 #define IMGUI_VERSION               "1.84 WIP"
-#define IMGUI_VERSION_NUM           18308
+#define IMGUI_VERSION_NUM           18309
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
 #define IMGUI_HAS_TABLE