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rhi: vulkan: Disable vkmemalloc's own synchronization

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No need for those mutexes.

Task-number: QTBUG-78908
Change-Id: I60c32df1f8729098f1894eff7c71e7fbcbd23ecf
Reviewed-by: Christian Strømme <christian.stromme@qt.io>
This commit is contained in:
Laszlo Agocs 2019-10-01 14:36:29 +02:00
parent f1c7814a55
commit 5bc972a411
1 changed files with 3 additions and 0 deletions
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3
src/gui/rhi/qrhivulkan.cpp
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@ -568,6 +568,9 @@ bool QRhiVulkan::create(QRhi::Flags flags)
VmaAllocatorCreateInfo allocatorInfo; VmaAllocatorCreateInfo allocatorInfo;
memset(&allocatorInfo, 0, sizeof(allocatorInfo)); memset(&allocatorInfo, 0, sizeof(allocatorInfo));
// A QRhi is supposed to be used from one single thread only. Disable
// the allocator's own mutexes. This gives a performance boost.
allocatorInfo.flags = VMA_ALLOCATOR_CREATE_EXTERNALLY_SYNCHRONIZED_BIT;
allocatorInfo.physicalDevice = physDev; allocatorInfo.physicalDevice = physDev;
allocatorInfo.device = dev; allocatorInfo.device = dev;
allocatorInfo.pVulkanFunctions = &afuncs; allocatorInfo.pVulkanFunctions = &afuncs;