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Updated documentation of memory mapping with known bug in MoltenVK, based on #47. Thanks @DiegoAce !

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Adam Sawicki 2018-11-16 13:43:34 +01:00
parent b0c363693f
commit 7f97202add
3 changed files with 134 additions and 131 deletions
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src/vk_mem_alloc.h
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@ -391,7 +391,9 @@ There are some exceptions though, when you should consider mapping memory only f
for the time of any call to `vkQueueSubmit()` or `vkQueuePresentKHR()`, this
block is migrated by WDDM to system RAM, which degrades performance. It doesn't
matter if that particular memory block is actually used by the command buffer
being submitted.
being submitted.
- On Mac/MoltenVK there is a known bug - [Issue #175](https://github.com/KhronosGroup/MoltenVK/issues/175)
which requires unmapping before GPU can see updated texture.
- Keeping many large memory blocks mapped may impact performance or stability of some debugging tools.
\section memory_mapping_cache_control Cache control