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Vulkan memory allocation LRU cache #3422

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Merged
merged 2 commits into from
Apr 12, 2025
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Vulkan memory allocation LRU cache #3422

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6a99951
First version of a memory allocation cache for Vulkan.
mcourteaux Apr 10, 2025
f586194
Increase maximal cached memory allocations to 1024. Add configuration…
mcourteaux Apr 11, 2025
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8 changes: 8 additions & 0 deletions src/config.h
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Original file line number Diff line number Diff line change
Expand Up @@ -333,6 +333,14 @@ static_assert(bx::isPowerOf2(BGFX_CONFIG_MAX_VIEWS), "BGFX_CONFIG_MAX_VIEWS must
# define BGFX_CONFIG_PER_FRAME_SCRATCH_STAGING_BUFFER_SIZE (32<<20)
#endif

#ifndef BGFX_CONFIG_MAX_BYTES_CACHED_DEVICE_MEMORY_ALLOCATIONS
/// Amount of allowed memory allocations left on device to use for recycling during
/// later allocations. This can be benificial in case the driver is slow allocating memory
/// on the device.
/// Note: Currently only used by the Vulkan backend.
# define BGFX_CONFIG_MAX_BYTES_CACHED_DEVICE_MEMORY_ALLOCATIONS (128 << 20)
#endif

#ifndef BGFX_CONFIG_MAX_STAGING_SIZE_FOR_SCRATCH_BUFFER
/// The threshold of data size above which the staging scratch buffer will
/// not be used, but instead a separate device memory allocation will take
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