diff options
| author | Laszlo Agocs <laszlo.agocs@qt.io> | 2019-10-01 14:36:29 +0200 |
|---|---|---|
| committer | Laszlo Agocs <laszlo.agocs@qt.io> | 2019-10-03 09:38:01 +0200 |
| commit | 5bc972a4118927be7d2b81e4ff66be5bc274fdaa (patch) | |
| tree | 04fd1b7e421901d79d9c9f501b58cd68729bc25a | |
| parent | f1c7814a55903dad5a5e77683bdcca5fc3805394 (diff) | |
rhi: vulkan: Disable vkmemalloc's own synchronization
No need for those mutexes.
Task-number: QTBUG-78908
Change-Id: I60c32df1f8729098f1894eff7c71e7fbcbd23ecf
Reviewed-by: Christian Strømme <christian.stromme@qt.io>
| -rw-r--r-- | src/gui/rhi/qrhivulkan.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/gui/rhi/qrhivulkan.cpp b/src/gui/rhi/qrhivulkan.cpp index 3a2c35b589..c7d28a4f18 100644 --- a/src/gui/rhi/qrhivulkan.cpp +++ b/src/gui/rhi/qrhivulkan.cpp @@ -568,6 +568,9 @@ bool QRhiVulkan::create(QRhi::Flags flags) VmaAllocatorCreateInfo 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.device = dev; allocatorInfo.pVulkanFunctions = &afuncs; |