Added support for loading Vulkan functions from volk library

Doxyfile

@@ -2469,7 +2469,8 @@ PREDEFINED             = VMA_CALL_PRE= \
                          VMA_EXTERNAL_MEMORY_WIN32=1 \
                          VMA_EXTERNAL_MEMORY=1 \
                          VMA_EXTENDS_VK_STRUCT= \
-                         VMA_STATS_STRING_ENABLED=1
+                         VMA_STATS_STRING_ENABLED=1 \
+                         VOLK_HEADER_VERSION=304
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
 # tag can be used to specify a list of macro names that should be expanded. The

include/vk_mem_alloc.h

@@ -1669,6 +1669,62 @@ typedef struct VmaVirtualAllocationInfo
 @{
 */
 
+#ifdef VOLK_HEADER_VERSION
+/** \brief Fully initializes `pDstVulkanFunctions` structure with Vulkan functions needed by VMA
+using [volk library](https://github.com/zeux/volk).
+
+This function is defined in VMA header only if "volk.h" was included before it.
+
+To use this function properly:
+
+-# Initialize volk and Vulkan:
+   -# Call `volkInitialize()`
+   -# Create `VkInstance` object
+   -# Call `volkLoadInstance()`
+   -# Create `VkDevice` object
+   -# Call `volkLoadDevice()`
+-# Fill in structure #VmaAllocatorCreateInfo, especially members:
+   - VmaAllocatorCreateInfo::device
+   - VmaAllocatorCreateInfo::vulkanApiVersion
+   - VmaAllocatorCreateInfo::flags - set appropriate flags for the Vulkan extensions you enabled
+-# Create an instance of the #VmaVulkanFunctions structure.
+-# Call vmaImportVulkanFunctionsFromVolk().
+   Parameter `pAllocatorCreateInfo` is read to find out which functions should be fetched for
+   appropriate Vulkan version and extensions.
+   Parameter `pDstVulkanFunctions` is filled with those function pointers, or null if not applicable.
+-# Attach the #VmaVulkanFunctions structure to VmaAllocatorCreateInfo::pVulkanFunctions.
+-# Call vmaCreateAllocator() to create the #VmaAllocator object.
+
+Example:
+
+\code
+VmaAllocatorCreateInfo allocatorCreateInfo = {};
+allocatorCreateInfo.physicalDevice = myPhysicalDevice;
+allocatorCreateInfo.device = myDevice;
+allocatorCreateInfo.instance = myInstance;
+allocatorCreateInfo.vulkanApiVersion = VK_API_VERSION_1_3;
+allocatorCreateInfo.flags = VMA_ALLOCATOR_CREATE_EXT_MEMORY_BUDGET_BIT |
+    VMA_ALLOCATOR_CREATE_EXT_MEMORY_PRIORITY_BIT |
+    VMA_ALLOCATOR_CREATE_KHR_EXTERNAL_MEMORY_WIN32_BIT;
+
+VmaVulkanFunctions vulkanFunctions;
+VkResult res = vmaImportVulkanFunctionsFromVolk(&allocatorCreateInfo, &vulkanFunctions);
+// Check res...
+allocatorCreateInfo.pVulkanFunctions = &vulkanFunctions;
+
+VmaAllocator allocator;
+res = vmaCreateAllocator(&allocatorCreateInfo, &allocator);
+// Check res...
+\endcode
+
+Internally in this function, pointers to functions related to the entire Vulkan instance are fetched using global function definitions,
+while pointers to functions related to the Vulkan device are fetched using `volkLoadDeviceTable()` for given `pAllocatorCreateInfo->device`.
+ */
+VMA_CALL_PRE VkResult VMA_CALL_POST vmaImportVulkanFunctionsFromVolk(
+    const VmaAllocatorCreateInfo* VMA_NOT_NULL pAllocatorCreateInfo,
+    VmaVulkanFunctions* VMA_NOT_NULL pDstVulkanFunctions);
+#endif
+
 /// Creates #VmaAllocator object.
 VMA_CALL_PRE VkResult VMA_CALL_POST vmaCreateAllocator(
     const VmaAllocatorCreateInfo* VMA_NOT_NULL pCreateInfo,
@@ -15082,6 +15138,103 @@ void VmaAllocator_T::PrintDetailedMap(VmaJsonWriter& json)
 
 
 #ifndef _VMA_PUBLIC_INTERFACE
+
+#ifdef VOLK_HEADER_VERSION
+
+VMA_CALL_PRE VkResult VMA_CALL_POST vmaImportVulkanFunctionsFromVolk(
+    const VmaAllocatorCreateInfo* VMA_NOT_NULL pAllocatorCreateInfo,
+    VmaVulkanFunctions* VMA_NOT_NULL pDstVulkanFunctions)
+{
+    VMA_ASSERT(pAllocatorCreateInfo != VMA_NULL);
+    VMA_ASSERT(pAllocatorCreateInfo->instance != VK_NULL_HANDLE);
+    VMA_ASSERT(pAllocatorCreateInfo->device != VK_NULL_HANDLE);
+
+    memset(pDstVulkanFunctions, 0, sizeof(*pDstVulkanFunctions));
+
+    VolkDeviceTable src = {};
+    volkLoadDeviceTable(&src, pAllocatorCreateInfo->device);
+
+#define COPY_GLOBAL_TO_VMA_FUNC(volkName, vmaName) if(!pDstVulkanFunctions->vmaName) pDstVulkanFunctions->vmaName = volkName;
+#define COPY_DEVICE_TO_VMA_FUNC(volkName, vmaName) if(!pDstVulkanFunctions->vmaName) pDstVulkanFunctions->vmaName = src.volkName;
+
+    COPY_GLOBAL_TO_VMA_FUNC(vkGetInstanceProcAddr, vkGetInstanceProcAddr)
+    COPY_GLOBAL_TO_VMA_FUNC(vkGetDeviceProcAddr, vkGetDeviceProcAddr)
+    COPY_GLOBAL_TO_VMA_FUNC(vkGetPhysicalDeviceProperties, vkGetPhysicalDeviceProperties)
+    COPY_GLOBAL_TO_VMA_FUNC(vkGetPhysicalDeviceMemoryProperties, vkGetPhysicalDeviceMemoryProperties)
+    COPY_DEVICE_TO_VMA_FUNC(vkAllocateMemory, vkAllocateMemory)
+    COPY_DEVICE_TO_VMA_FUNC(vkFreeMemory, vkFreeMemory)
+    COPY_DEVICE_TO_VMA_FUNC(vkMapMemory, vkMapMemory)
+    COPY_DEVICE_TO_VMA_FUNC(vkUnmapMemory, vkUnmapMemory)
+    COPY_DEVICE_TO_VMA_FUNC(vkFlushMappedMemoryRanges, vkFlushMappedMemoryRanges)
+    COPY_DEVICE_TO_VMA_FUNC(vkInvalidateMappedMemoryRanges, vkInvalidateMappedMemoryRanges)
+    COPY_DEVICE_TO_VMA_FUNC(vkBindBufferMemory, vkBindBufferMemory)
+    COPY_DEVICE_TO_VMA_FUNC(vkBindImageMemory, vkBindImageMemory)
+    COPY_DEVICE_TO_VMA_FUNC(vkGetBufferMemoryRequirements, vkGetBufferMemoryRequirements)
+    COPY_DEVICE_TO_VMA_FUNC(vkGetImageMemoryRequirements, vkGetImageMemoryRequirements)
+    COPY_DEVICE_TO_VMA_FUNC(vkCreateBuffer, vkCreateBuffer)
+    COPY_DEVICE_TO_VMA_FUNC(vkDestroyBuffer, vkDestroyBuffer)
+    COPY_DEVICE_TO_VMA_FUNC(vkCreateImage, vkCreateImage)
+    COPY_DEVICE_TO_VMA_FUNC(vkDestroyImage, vkDestroyImage)
+    COPY_DEVICE_TO_VMA_FUNC(vkCmdCopyBuffer, vkCmdCopyBuffer)
+#if VMA_VULKAN_VERSION >= 1001000
+    if (pAllocatorCreateInfo->vulkanApiVersion >= VK_MAKE_VERSION(1, 1, 0))
+    {
+        COPY_GLOBAL_TO_VMA_FUNC(vkGetPhysicalDeviceMemoryProperties2, vkGetPhysicalDeviceMemoryProperties2KHR)
+        COPY_DEVICE_TO_VMA_FUNC(vkGetBufferMemoryRequirements2, vkGetBufferMemoryRequirements2KHR)
+        COPY_DEVICE_TO_VMA_FUNC(vkGetImageMemoryRequirements2, vkGetImageMemoryRequirements2KHR)
+        COPY_DEVICE_TO_VMA_FUNC(vkBindBufferMemory2, vkBindBufferMemory2KHR)
+        COPY_DEVICE_TO_VMA_FUNC(vkBindImageMemory2, vkBindImageMemory2KHR)
+    }
+#endif
+#if VMA_VULKAN_VERSION >= 1003000
+    if (pAllocatorCreateInfo->vulkanApiVersion >= VK_MAKE_VERSION(1, 3, 0))
+    {
+        COPY_DEVICE_TO_VMA_FUNC(vkGetDeviceBufferMemoryRequirements, vkGetDeviceBufferMemoryRequirements)
+        COPY_DEVICE_TO_VMA_FUNC(vkGetDeviceImageMemoryRequirements, vkGetDeviceImageMemoryRequirements)
+    }
+#endif
+#if VMA_KHR_MAINTENANCE4
+    if((pAllocatorCreateInfo->flags & VMA_ALLOCATOR_CREATE_KHR_MAINTENANCE4_BIT) != 0)
+    {
+        COPY_DEVICE_TO_VMA_FUNC(vkGetDeviceBufferMemoryRequirementsKHR, vkGetDeviceBufferMemoryRequirements)
+        COPY_DEVICE_TO_VMA_FUNC(vkGetDeviceImageMemoryRequirementsKHR, vkGetDeviceImageMemoryRequirements)
+    }
+#endif
+#if VMA_DEDICATED_ALLOCATION
+    if ((pAllocatorCreateInfo->flags & VMA_ALLOCATOR_CREATE_KHR_DEDICATED_ALLOCATION_BIT) != 0)
+    {
+        COPY_DEVICE_TO_VMA_FUNC(vkGetBufferMemoryRequirements2KHR, vkGetBufferMemoryRequirements2KHR)
+        COPY_DEVICE_TO_VMA_FUNC(vkGetImageMemoryRequirements2KHR, vkGetImageMemoryRequirements2KHR)
+    }
+#endif
+#if VMA_BIND_MEMORY2
+    if ((pAllocatorCreateInfo->flags & VMA_ALLOCATOR_CREATE_KHR_BIND_MEMORY2_BIT) != 0)
+    {
+        COPY_DEVICE_TO_VMA_FUNC(vkBindBufferMemory2KHR, vkBindBufferMemory2KHR)
+        COPY_DEVICE_TO_VMA_FUNC(vkBindImageMemory2KHR, vkBindImageMemory2KHR)
+    }
+#endif
+#if VMA_MEMORY_BUDGET
+    if ((pAllocatorCreateInfo->flags & VMA_ALLOCATOR_CREATE_EXT_MEMORY_BUDGET_BIT) != 0)
+    {
+        COPY_GLOBAL_TO_VMA_FUNC(vkGetPhysicalDeviceMemoryProperties2KHR, vkGetPhysicalDeviceMemoryProperties2KHR)
+    }
+#endif
+#if VMA_EXTERNAL_MEMORY_WIN32
+    if ((pAllocatorCreateInfo->flags & VMA_ALLOCATOR_CREATE_KHR_EXTERNAL_MEMORY_WIN32_BIT) != 0)
+    {
+        COPY_DEVICE_TO_VMA_FUNC(vkGetMemoryWin32HandleKHR, vkGetMemoryWin32HandleKHR)
+    }
+#endif
+
+#undef COPY_DEVICE_TO_VMA_FUNC
+#undef COPY_GLOBAL_TO_VMA_FUNC
+
+    return VK_SUCCESS;
+}
+
+#endif // #ifdef VOLK_HEADER_VERSION
+
 VMA_CALL_PRE VkResult VMA_CALL_POST vmaCreateAllocator(
     const VmaAllocatorCreateInfo* pCreateInfo,
     VmaAllocator* pAllocator)
@@ -16796,7 +16949,7 @@ See code sample below.
 
 \subsection quick_start_initialization_importing_vulkan_functions Importing Vulkan functions
 
-You may need to configure importing Vulkan functions. There are 3 ways to do this:
+You may need to configure importing Vulkan functions. There are 4 ways to do this:
 
 -# **If you link with Vulkan static library** (e.g. "vulkan-1.lib" on Windows):
    - You don't need to do anything.
@@ -16807,10 +16960,13 @@ You may need to configure importing Vulkan functions. There are 3 ways to do thi
    - Provide pointers to these two functions via VmaVulkanFunctions::vkGetInstanceProcAddr,
      VmaVulkanFunctions::vkGetDeviceProcAddr.
    - The library will fetch pointers to all other functions it needs internally.
--# **If you fetch pointers to all Vulkan functions in a custom way**, e.g. using some loader like
-   [Volk](https://github.com/zeux/volk):
+-# **If you fetch pointers to all Vulkan functions in a custom way**:
    - Define `VMA_STATIC_VULKAN_FUNCTIONS` and `VMA_DYNAMIC_VULKAN_FUNCTIONS` to 0.
    - Pass these pointers via structure #VmaVulkanFunctions.
+-# **If you use [volk library](https://github.com/zeux/volk)**:
+   - Define `VMA_STATIC_VULKAN_FUNCTIONS` and `VMA_DYNAMIC_VULKAN_FUNCTIONS` to 0.
+   - Use function vmaImportVulkanFunctionsFromVolk() to fill in the structure #VmaVulkanFunctions.
+     For more information, see the description of this function.
 
 \subsection quick_start_initialization_enabling_extensions Enabling extensions
 

src/CMakeLists.txt

@@ -22,6 +22,7 @@
 
 option(VMA_STATIC_VULKAN_FUNCTIONS "Link statically with Vulkan API" ON)
 option(VMA_DYNAMIC_VULKAN_FUNCTIONS "Fetch pointers to Vulkan functions internally (no static linking)" OFF)
+set(VMA_VOLK_HEADER_PATH "" CACHE STRING "Path to volk.h file from the volk library (optional)")
 option(VMA_DEBUG_ALWAYS_DEDICATED_MEMORY "Every allocation will have its own memory block" OFF)
 option(VMA_DEBUG_INITIALIZE_ALLOCATIONS "Automatically fill new allocations and destroyed allocations with some bit pattern" OFF)
 option(VMA_DEBUG_GLOBAL_MUTEX "Enable single mutex protecting all entry calls to the library" OFF)
@@ -50,6 +51,7 @@ target_sources(VmaSample PRIVATE
     Tests.h
     VmaUsage.cpp
     VmaUsage.h
+    VolkUsage.cpp
     VulkanSample.cpp
     ../include/vk_mem_alloc.h
 )
@@ -78,6 +80,15 @@ target_sources(VmaSample PRIVATE vk_mem_alloc.natvis)
 add_subdirectory(Shaders)
 add_dependencies(VmaSample VmaSampleShaders)
 
+if(NOT "${VMA_VOLK_HEADER_PATH}" STREQUAL "")
+    if(EXISTS "${VMA_VOLK_HEADER_PATH}")
+        message(STATUS "File volk.h found and used from path: ${VMA_VOLK_HEADER_PATH}")
+        target_compile_definitions(VmaSample PRIVATE VMA_VOLK_HEADER_PATH="${VMA_VOLK_HEADER_PATH}")
+    else()
+        message(FATAL_ERROR "File volk.h not found in path: ${VMA_VOLK_HEADER_PATH}")
+    endif()
+endif()
+
 # Use Unicode instead of multibyte set
 add_compile_definitions(UNICODE _UNICODE)
 

src/Tests.cpp

@@ -3902,6 +3902,11 @@ void TestHeapSizeLimit()
     allocatorCreateInfo.device = g_hDevice;
     allocatorCreateInfo.instance = g_hVulkanInstance;
     allocatorCreateInfo.pHeapSizeLimit = heapSizeLimit;
+#ifdef VOLK_HEADER_VERSION
+    VmaVulkanFunctions vulkanFunctions = {};
+    vmaImportVulkanFunctionsFromVolk(&allocatorCreateInfo, &vulkanFunctions);
+    allocatorCreateInfo.pVulkanFunctions = &vulkanFunctions;
+#endif
 #if VMA_DYNAMIC_VULKAN_FUNCTIONS
     VmaVulkanFunctions vulkanFunctions = {};
     vulkanFunctions.vkGetInstanceProcAddr = vkGetInstanceProcAddr;

src/VmaUsage.h

@@ -96,10 +96,14 @@ include all public interface declarations. Example:
     #pragma clang diagnostic ignored "-Wnullability-completeness"
 #endif
 
-#include <vulkan/vulkan.h>
+#ifdef VMA_VOLK_HEADER_PATH
+    #include VMA_VOLK_HEADER_PATH
+#else
+    #include <vulkan/vulkan.h>
+#endif
 
 #ifdef _WIN32
-#include <vulkan/vulkan_win32.h>
+    #include <vulkan/vulkan_win32.h>
 #endif  // #ifdef _WIN32
 
 #include "vk_mem_alloc.h"

src/VolkUsage.cpp

@@ -0,0 +1,28 @@
+//
+// Copyright (c) 2017-2025 Advanced Micro Devices, Inc. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#ifdef VMA_VOLK_HEADER_PATH
+
+#define VOLK_IMPLEMENTATION
+#include "VmaUsage.h"
+
+#endif // #ifdef VMA_VOLK_HEADER_PATH

src/VulkanSample.cpp

@@ -426,6 +426,10 @@ void VulkanUsage::Init()
         g_Allocs = &g_CpuAllocationCallbacks;
     }
 
+#ifdef VOLK_HEADER_VERSION
+    ERR_GUARD_VULKAN(volkInitialize());
+#endif
+
     uint32_t instanceLayerPropCount = 0;
     ERR_GUARD_VULKAN( vkEnumerateInstanceLayerProperties(&instanceLayerPropCount, nullptr) );
     std::vector<VkLayerProperties> instanceLayerProps(instanceLayerPropCount);
@@ -513,6 +517,10 @@ void VulkanUsage::Init()
 
     ERR_GUARD_VULKAN( vkCreateInstance(&instInfo, g_Allocs, &g_hVulkanInstance) );
 
+#ifdef VOLK_HEADER_VERSION
+    volkLoadInstance(g_hVulkanInstance);
+#endif
+
     if(VK_EXT_debug_utils_enabled)
     {
         RegisterDebugCallbacks();
@@ -1511,12 +1519,18 @@ void SetAllocatorCreateInfo(VmaAllocatorCreateInfo& outInfo)
         outInfo.pAllocationCallbacks = &g_CpuAllocationCallbacks;
     }
 
+#ifdef VOLK_HEADER_VERSION
+    static VmaVulkanFunctions vulkanFunctions = {};
+    vmaImportVulkanFunctionsFromVolk(&outInfo, &vulkanFunctions);
+    outInfo.pVulkanFunctions = &vulkanFunctions;
+#endif // #ifdef VOLK_HEADER_VERSION
+
 #if VMA_DYNAMIC_VULKAN_FUNCTIONS
     static VmaVulkanFunctions vulkanFunctions = {};
     vulkanFunctions.vkGetInstanceProcAddr = vkGetInstanceProcAddr;
     vulkanFunctions.vkGetDeviceProcAddr = vkGetDeviceProcAddr;
     outInfo.pVulkanFunctions = &vulkanFunctions;
-#endif
+#endif // #if VMA_DYNAMIC_VULKAN_FUNCTIONS
 
     // Uncomment to enable HeapSizeLimit.
     /*
@@ -2083,6 +2097,11 @@ static void InitializeApplication()
     deviceCreateInfo.pQueueCreateInfos = queueCreateInfo;
 
     ERR_GUARD_VULKAN( vkCreateDevice(g_hPhysicalDevice, &deviceCreateInfo, g_Allocs, &g_hDevice) );
+
+#ifdef VOLK_HEADER_VERSION
+    volkLoadDevice(g_hDevice);
+#endif
+
     SetDebugUtilsObjectName(VK_OBJECT_TYPE_DEVICE, reinterpret_cast<std::uint64_t>(g_hDevice), "g_hDevice");
     // Only now that SetDebugUtilsObjectName is loaded, we can assign a name to g_hVulkanInstance as well
     SetDebugUtilsObjectName(VK_OBJECT_TYPE_INSTANCE, reinterpret_cast<std::uint64_t>(g_hVulkanInstance), "g_hVulkanInstance");