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Improved behavior of vmaVirtualAllocate on failed allocation. Fixed VmaVirtualAllocation to distinguish VK_NULL_HANDLE from successful allocation.

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Improved tests.
Rebult the docs.
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Adam Sawicki 2022-02-04 11:39:56 +01:00
parent 05d0c89f0b
commit 22485a05f9
12 changed files with 126 additions and 108 deletions
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docs/html/group__group__alloc.html
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@ -709,8 +709,7 @@ Functions</h2></td></tr>
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<tr><td class="fieldname"><a id="gga9a7c45f9c863695d98c83fa5ac940fe7a13c8a444197c67866be9cb05599fc726" name="gga9a7c45f9c863695d98c83fa5ac940fe7a13c8a444197c67866be9cb05599fc726"></a>VMA_POOL_CREATE_LINEAR_ALGORITHM_BIT&#160;</td><td class="fielddoc"><p >Enables alternative, linear allocation algorithm in this pool. </p>
<p >Specify this flag to enable linear allocation algorithm, which always creates new allocations after last one and doesn't reuse space from allocations freed in between. It trades memory consumption for simplified algorithm and data structure, which has better performance and uses less memory for metadata.</p>
<p >By using this flag, you can achieve behavior of free-at-once, stack, ring buffer, and double stack. For details, see documentation chapter <a class="el" href="custom_memory_pools.html#linear_algorithm">Linear allocation algorithm</a>.</p>
<p >When using this flag, you must specify <a class="el" href="struct_vma_pool_create_info.html#ae41142f2834fcdc82baa4883c187b75c" title="Maximum number of blocks that can be allocated in this pool. Optional.">VmaPoolCreateInfo::maxBlockCount</a> == 1 (or 0 for default). </p>
<p >By using this flag, you can achieve behavior of free-at-once, stack, ring buffer, and double stack. For details, see documentation chapter <a class="el" href="custom_memory_pools.html#linear_algorithm">Linear allocation algorithm</a>. </p>
</td></tr>
<tr><td class="fieldname"><a id="gga9a7c45f9c863695d98c83fa5ac940fe7a97a0dc38e5161b780594d998d313d35e" name="gga9a7c45f9c863695d98c83fa5ac940fe7a97a0dc38e5161b780594d998d313d35e"></a>VMA_POOL_CREATE_BUDDY_ALGORITHM_BIT&#160;</td><td class="fielddoc"><p >Enables alternative, buddy allocation algorithm in this pool. </p>
<p >It operates on a tree of blocks, each having size that is a power of two and a half of its parent's size. Comparing to default algorithm, this one provides faster allocation and deallocation and decreased external fragmentation, at the expense of more memory wasted (internal fragmentation). For details, see documentation chapter <a class="el" href="custom_memory_pools.html#buddy_algorithm">Buddy allocation algorithm</a>. </p>