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Merge pull request #101972 from darksylinc/matias-vma-slowdown 

Vulkan: Fix performance regression introduced in buffer creation
This commit is contained in:
Thaddeus Crews 2025-01-24 09:05:34 -06:00
parent b381d1b0e5 c30eff5986
commit 1ffb40c7ca
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1 changed files with 2 additions and 0 deletions
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2
drivers/vulkan/rendering_device_driver_vulkan.cpp
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@ -1530,10 +1530,12 @@ RDD::BufferID RenderingDeviceDriverVulkan::buffer_create(uint64_t p_size, BitFie
if (is_src && !is_dst) {
// Looks like a staging buffer: CPU maps, writes sequentially, then GPU copies to VRAM.
alloc_create_info.flags = VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT;
alloc_create_info.preferredFlags |= VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
}
if (is_dst && !is_src) {
// Looks like a readback buffer: GPU copies from VRAM, then CPU maps and reads.
alloc_create_info.flags = VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT;
alloc_create_info.preferredFlags |= VK_MEMORY_PROPERTY_HOST_CACHED_BIT;
}
alloc_create_info.requiredFlags = (VK_MEMORY_PROPERTY_HOST_COHERENT_BIT | VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
} break;