Adam Sawicki aee61b1d25 Added new API for selecting preferred memory type: VMA_MEMORY_USAGE_AUTO, VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE, VMA_MEMORY_USAGE_AUTO_PREFER_HOST, VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT, VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT, VMA_ALLOCATION_CREATE_HOST_ACCESS_ALLOW_TRANSFER_INSTEAD_BIT ... Old values like VMA_MEMORY_USAGE_GPU_ONLY still work as before, for backward compatibility. Updated documentation accordingly. Introduced a concept of mappable and non-mappable allocations - with VMA_MEMORY_USAGE_AUTO* an intent to map has to be specified using VMA_ALLOCATION_CREATE_HOST_ACCESS*. Added mapping hysteresis logic (internal class VmaMappingHysteresis, config macro VMA_MAPPING_HYSTERESIS_ENABLED) that prevents too many calls vkMapMemory/vkUnmapMemory back and forth. Internal improvement in VmaBlockVector::AllocatePage to try to keep mappable and non-mappable allocations separate.		2022-02-17 14:44:06 +01:00
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vk_mem_alloc.h	Added new API for selecting preferred memory type: VMA_MEMORY_USAGE_AUTO, VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE, VMA_MEMORY_USAGE_AUTO_PREFER_HOST, VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT, VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT, VMA_ALLOCATION_CREATE_HOST_ACCESS_ALLOW_TRANSFER_INSTEAD_BIT	2022-02-17 14:44:06 +01:00