Examples: Vulkan: make ApiVersion a little more visible in examples. (#8326, #8365)

backends/imgui_impl_vulkan.h

@@ -75,7 +75,7 @@
 //   - When using dynamic rendering, set UseDynamicRendering=true and fill PipelineRenderingCreateInfo structure.
 struct ImGui_ImplVulkan_InitInfo
 {
-    uint32_t                        ApiVersion;                 // Fill with API version of Instance, e.g. VK_API_VERSION_1_3, which might be lower than header version (VK_HEADER_VERSION_COMPLETE)
+    uint32_t                        ApiVersion;                 // Fill with API version of Instance, e.g. VK_API_VERSION_1_3 or your value of VkApplicationInfo::apiVersion. May be lower than header version (VK_HEADER_VERSION_COMPLETE)
     VkInstance                      Instance;
     VkPhysicalDevice                PhysicalDevice;
     VkDevice                        Device;

examples/example_glfw_vulkan/main.cpp

@@ -396,6 +396,7 @@ int main(int, char**)
     // Setup Platform/Renderer backends
     ImGui_ImplGlfw_InitForVulkan(window, true);
     ImGui_ImplVulkan_InitInfo init_info = {};
+    //init_info.ApiVersion = VK_API_VERSION_1_3;              // Pass in your value of VkApplicationInfo::apiVersion, otherwise will default to header version.
     init_info.Instance = g_Instance;
     init_info.PhysicalDevice = g_PhysicalDevice;
     init_info.Device = g_Device;

examples/example_sdl2_vulkan/main.cpp

@@ -396,6 +396,7 @@ int main(int, char**)
     // Setup Platform/Renderer backends
     ImGui_ImplSDL2_InitForVulkan(window);
     ImGui_ImplVulkan_InitInfo init_info = {};
+    //init_info.ApiVersion = VK_API_VERSION_1_3;              // Pass in your value of VkApplicationInfo::apiVersion, otherwise will default to header version.
     init_info.Instance = g_Instance;
     init_info.PhysicalDevice = g_PhysicalDevice;
     init_info.Device = g_Device;

examples/example_sdl3_vulkan/main.cpp

@@ -400,6 +400,7 @@ int main(int, char**)
     // Setup Platform/Renderer backends
     ImGui_ImplSDL3_InitForVulkan(window);
     ImGui_ImplVulkan_InitInfo init_info = {};
+    //init_info.ApiVersion = VK_API_VERSION_1_3;              // Pass in your value of VkApplicationInfo::apiVersion, otherwise will default to header version.
     init_info.Instance = g_Instance;
     init_info.PhysicalDevice = g_PhysicalDevice;
     init_info.Device = g_Device;

examples/example_win32_vulkan/main.cpp

@@ -387,6 +387,7 @@ int main(int, char**)
     // Setup Platform/Renderer backends
     ImGui_ImplWin32_Init(hwnd);
     ImGui_ImplVulkan_InitInfo init_info = {};
+    //init_info.ApiVersion = VK_API_VERSION_1_3;              // Pass in your value of VkApplicationInfo::apiVersion, otherwise will default to header version.
     init_info.Instance = g_Instance;
     init_info.PhysicalDevice = g_PhysicalDevice;
     init_info.Device = g_Device;