Examples: SDL+SDL_Renderer: Added call to SDL_RenderSetScale() to display is correct on a Retina display (albeit lower-res as our other unmodified examples). (#6121, #6065, #5931).

docs/CHANGELOG.txt

@@ -64,6 +64,8 @@ All changes:
 - Examples: Win32: Fixed examples using RegisterClassW() since 1.89 to also call
   DefWindowProcW() instead of DefWindowProc() so that title text are correctly converted
   when application is compiled without /DUNICODE. (#5725, #5961, #5975) [@markreidvfx]
+- Examples: SDL+SDL_Renderer: Added call to SDL_RenderSetScale() to display is correct on a
+  Retina display (albeit lower-res as our other unmodified examples). (#6121, #6065, #5931). 
 
 
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examples/example_sdl_sdlrenderer/main.cpp

@@ -143,6 +143,7 @@ int main(int, char**)
 
         // Rendering
         ImGui::Render();
+        SDL_RenderSetScale(renderer, io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
         SDL_SetRenderDrawColor(renderer, (Uint8)(clear_color.x * 255), (Uint8)(clear_color.y * 255), (Uint8)(clear_color.z * 255), (Uint8)(clear_color.w * 255));
         SDL_RenderClear(renderer);
         ImGui_ImplSDLRenderer_RenderDrawData(ImGui::GetDrawData());