From 08913a75198f7afd7ae8cefcf3bcd5cee9d69c79 Mon Sep 17 00:00:00 2001
From: mwlasiuk <michalwlasiuk@wp.pl>
Date: Wed, 15 Oct 2025 21:34:10 +0200
Subject: [PATCH] Add possibility to use <Volk/volk.h> in imgui

By defining IMGUI_IMPL_VULKAN_VOLK_USE_VOLK_DIRECTORY before including
imgui_impl_vulkan.h volk.h will be included from Volk directory - as it
is placed in VulkanSDK include directories.
---
 backends/imgui_impl_vulkan.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/backends/imgui_impl_vulkan.h b/backends/imgui_impl_vulkan.h
index afc698701..b26c7bbe0 100644
--- a/backends/imgui_impl_vulkan.h
+++ b/backends/imgui_impl_vulkan.h
@@ -45,6 +45,10 @@
 // (you can also technically use IMGUI_IMPL_VULKAN_NO_PROTOTYPES + wrap Volk via ImGui_ImplVulkan_LoadFunctions().)
 //#define IMGUI_IMPL_VULKAN_USE_VOLK
 
+// When using Volk from VulkanSDK (include directories provided via 'include_directories(${Vulkan_INCLUDE_DIRS})' from 'find_package(Vulkan REQUIRED)')
+// you might want ImGui to use VulkanSDK convention of <lib_include_dir>/<lib_header>.h ...
+//#define IMGUI_IMPL_VULKAN_VOLK_USE_VOLK_DIRECTORY
+
 #if defined(IMGUI_IMPL_VULKAN_NO_PROTOTYPES) && !defined(VK_NO_PROTOTYPES)
 #define VK_NO_PROTOTYPES
 #endif
@@ -54,7 +58,11 @@
 
 // Vulkan includes
 #ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+#ifdef IMGUI_IMPL_VULKAN_VOLK_USE_VOLK_DIRECTORY
+#include <Volk/volk.h>
+#else
 #include <volk.h>
+#endif
 #else
 #include <vulkan/vulkan.h>
 #endif