Vulkan: Note for unsupported feature with multi-viewports. (#2071)

examples/imgui_impl_vulkan.cpp

@@ -783,10 +783,12 @@ void ImGui_ImplVulkan_NewFrame()
 {
 }
 
-// FIXME-VIEWPORT: Need to recreate all swap chains?
 void ImGui_ImplVulkan_SetSwapChainMinImageCount(int min_image_count)
 {
     IM_ASSERT(min_image_count >= 2);
+    if (g_VulkanInitInfo.MinImageCount == min_image_count)
+        return;
+    IM_ASSERT(0); // FIXME-VIEWPORT: Need to recreate all swap chains?
     g_VulkanInitInfo.MinImageCount = min_image_count;
 }
 

examples/imgui_impl_vulkan.h

@@ -61,7 +61,7 @@ IMGUI_IMPL_API void     ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, V
 IMGUI_IMPL_API bool     ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer);
 IMGUI_IMPL_API void     ImGui_ImplVulkan_DestroyFontUploadObjects();
 IMGUI_IMPL_API void     ImGui_ImplVulkan_DestroyFrameRenderBuffers(VkInstance instance, VkDevice device, ImGui_ImplVulkan_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
-IMGUI_IMPL_API void     ImGui_ImplVulkan_SetSwapChainMinImageCount(int frames_queue_size); // To override MinImageCount after initialization
+IMGUI_IMPL_API void     ImGui_ImplVulkan_SetSwapChainMinImageCount(int min_image_count); // To override MinImageCount after initialization
 
 // Called by ImGui_ImplVulkan_Init(), might be useful elsewhere.
 IMGUI_IMPL_API bool     ImGui_ImplVulkan_CreateDeviceObjects();