如何告诉Vulkan内存分配器使用大量堆？

发布于 2025-01-22 09:38:51 字数 1165 浏览 0 评论 0 原文

我正在使用VMA来管理我的内存。我正在尝试分配一个非常大的缓冲区（1GB）。从产生3个带尺寸的堆：

8589934592
12453559296
257949696

目前，我的验证层的投诉

Validation Error: [ VUID-vkAllocateMemory-pAllocateInfo-01713 ] Object 0: handle = 0x3541230, name = Logical device: NVIDIA GeForce GTX 1070, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0xe9a2b96f | vkAllocateMemory: attempting to allocate 1073742080 bytes from heap 2,but size of that heap is only 257949696 bytes. The Vulkan spec states: pAllocateInfo->allocationSize must be less than or equal to VkPhysicalDeviceMemoryProperties::memoryHeaps[memindex].size where memindex = VkPhysicalDeviceMemoryProperties::memoryTypes[pAllocateInfo->memoryTypeIndex].heapIndex as returned by vkGetPhysicalDeviceMemoryProperties for the VkPhysicalDevice that device was created from (https://vulkan.lunarg.com/doc/view/1.3.204.1/linux/1.3-extensions/vkspec.html#VUID-vkAllocateMemory-pAllocateInfo-01713)

似乎准确，堆2确实没有足够的记忆来分配。如何告诉VMA使用堆1而不是堆2？

原文

I am using VMA to manage my memory. I am trying to allocate a very large buffer (1gb). Printing the memory heaps from the physcal device memory properties yields 3 heaps with sizes:

8589934592
12453559296
257949696

Currently my validation layers complaint

Validation Error: [ VUID-vkAllocateMemory-pAllocateInfo-01713 ] Object 0: handle = 0x3541230, name = Logical device: NVIDIA GeForce GTX 1070, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0xe9a2b96f | vkAllocateMemory: attempting to allocate 1073742080 bytes from heap 2,but size of that heap is only 257949696 bytes. The Vulkan spec states: pAllocateInfo->allocationSize must be less than or equal to VkPhysicalDeviceMemoryProperties::memoryHeaps[memindex].size where memindex = VkPhysicalDeviceMemoryProperties::memoryTypes[pAllocateInfo->memoryTypeIndex].heapIndex as returned by vkGetPhysicalDeviceMemoryProperties for the VkPhysicalDevice that device was created from (https://vulkan.lunarg.com/doc/view/1.3.204.1/linux/1.3-extensions/vkspec.html#VUID-vkAllocateMemory-pAllocateInfo-01713)

Which seems accurate, heap 2 indeed has not enough memory for this allocation. How do I tell VMA to use heap 1 instead of heap 2?

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