From f7ea6cd1d912c35d41dc51c344be751d52c02872 Mon Sep 17 00:00:00 2001
From: Swung0x48 <swung0x48@outlook.com>
Date: Tue, 17 Feb 2026 12:47:01 +0800
Subject: [PATCH] [Feat] (MG_Backend/DirectVulkan): dynamically load vulkan
 functions for vma

---
 CMakeLists.txt                                 | 18 ++++++++++++++++++
 .../DirectVulkan/Renderer/VulkanRenderer.cpp   |  4 ++++
 2 files changed, 22 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 091d5f30..5ba2cbd6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -255,6 +255,14 @@ set(MOBILEGL_LINK_LIBRARIES
         GPUOpen::VulkanMemoryAllocator
 )
 
+set(MOBILEGL_COMPILE_DEF
+        -DVMA_STATIC_VULKAN_FUNCTIONS=0
+        -DVMA_DYNAMIC_VULKAN_FUNCTIONS=1
+        -DVMA_VULKAN_VERSION=1001000
+)
+
+message(STATUS "MOBILEGL_COMPILE_DEF=${MOBILEGL_COMPILE_DEF}")
+
 set(MOBILEGL_INCLUDE_DIR
         ${CMAKE_SOURCE_DIR}/include
         ${CMAKE_SOURCE_DIR}/MobileGL
@@ -291,6 +299,11 @@ target_link_libraries(${CMAKE_PROJECT_NAME}
     ${MOBILEGL_LINK_LIBRARIES}
 )
 
+target_compile_definitions(${CMAKE_PROJECT_NAME}
+        PUBLIC
+        ${MOBILEGL_COMPILE_DEF}
+)
+
 if(NOT ANDROID)
     add_library(${CMAKE_PROJECT_NAME}_s STATIC 
         ${SOURCE_FILES}
@@ -318,6 +331,11 @@ if(NOT ANDROID)
         PUBLIC
         ${MOBILEGL_LINK_LIBRARIES}
     )
+
+    target_compile_definitions(${CMAKE_PROJECT_NAME}_s
+            PUBLIC
+            ${MOBILEGL_COMPILE_DEF}
+    )
 endif()
 
 if (TRACY_ENABLE)
diff --git a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
index 2940c4f6..3599e370 100644
--- a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
+++ b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
@@ -1020,9 +1020,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         }
 
         VmaAllocatorCreateInfo allocatorInfo{};
+        VmaVulkanFunctions vulkanFunctions{};
+        vulkanFunctions.vkGetInstanceProcAddr = vkGetInstanceProcAddr;
+        vulkanFunctions.vkGetDeviceProcAddr = vkGetDeviceProcAddr;
         allocatorInfo.instance = m_instance;
         allocatorInfo.physicalDevice = m_physicalDevice.handle;
         allocatorInfo.device = m_device;
+        allocatorInfo.pVulkanFunctions = &vulkanFunctions;
         allocatorInfo.vulkanApiVersion = VK_API_VERSION_1_0;
 
         VK_VERIFY(vmaCreateAllocator(&allocatorInfo, &m_allocator), "vmaCreateAllocator");