Releases · gwihlidal/vk-mem-rs

Updated to AMD VMA 2.2 release!

Notable new features: defragmentation of GPU memory, buddy algorithm, convenience functions for sparse binding.

Major changes:

New, more powerful defragmentation:
- DefragmentationInfo2
- Allocator::defragmentation_begin
- Allocator::defragmentation_end
Added support for defragmentation of GPU memory.
Defragmentation of CPU memory now uses memmove internally, so it can move data to overlapping regions.
Defragmentation of CPU memory is now available for memory types that are ash::vk::MemoryPropertyFlags::HOST_VISIBLE but not ash::vk::MemoryPropertyFlags::HOST_COHERENT.
Major internal changes in defragmentation algorithm.
Old interface (structure DefragmentationInfo, function Allocator::defragment) is now deprecated.
Added buddy algorithm, available for custom pools:
- AllocatorPoolCreateFlags::BUDDY_ALGORITHM
Added convenience functions for multiple allocations and deallocations at once, intended for sparse binding resources:
- Allocator::allocate_memory_pages
- Allocator::free_memory_pages
Added function that tries to resize existing allocation in place:
- Allocator::resize_allocation
Added flags for allocation strategy
- New flags:
  - AllocationCreateFlags::STRATEGY_BEST_FIT
  - AllocationCreateFlags::STRATEGY_WORST_FIT
  - AllocationCreateFlags::STRATEGY_FIRST_FIT
- Their aliases:
  - AllocationCreateFlags::STRATEGY_MIN_MEMORY
  - AllocationCreateFlags::STRATEGY_MIN_TIME
  - AllocationCreateFlags::STRATEGY_MIN_FRAGMENTATION

Minor changes:

Changed behavior of allocation functions to return ash::vk::Result::ERROR_VALIDATION_FAILED_EXT when trying to allocate memory of size 0, create buffer with size 0, or image with one of the dimensions 0.
Internal optimization: using read-write mutex on some platforms.
Many additions and fixes in documentation. Many compatibility fixes for various compilers. Other internal bugfixes, optimizations, refactoring, added more internal validation...

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