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Adam Sawicki 2022-02-17 14:44:48 +01:00
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@ -163,6 +163,10 @@ Enumerations</h2></td></tr>
&#160;&#160;<a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca7b586d2fdaf82a463b58f581ed72be27">VMA_MEMORY_USAGE_GPU_TO_CPU</a> = 4
, <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca416a444d4d0fc20067c3f76f32ff2500">VMA_MEMORY_USAGE_CPU_COPY</a> = 5
, <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca835333d9072db63a653818030e17614d">VMA_MEMORY_USAGE_GPU_LAZILY_ALLOCATED</a> = 6
, <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a> = 7
, <br />
&#160;&#160;<a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305ccae2adb696d6a73c18bb20c23666661327">VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE</a> = 8
, <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca9b422585242160b8ed3418310ee6664d">VMA_MEMORY_USAGE_AUTO_PREFER_HOST</a> = 9
, <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca091e69437ef693e8d0d287f1c719ba6e">VMA_MEMORY_USAGE_MAX_ENUM</a> = 0x7FFFFFFF
<br />
}</td></tr>
@ -181,11 +185,15 @@ Enumerations</h2></td></tr>
, <br />
&#160;&#160;<a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597ab8b1764f3e9022368e440c057783b92d">VMA_ALLOCATION_CREATE_WITHIN_BUDGET_BIT</a> = 0x00000100
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597afb0ee060cd733aaa5e249704ff589ad6">VMA_ALLOCATION_CREATE_CAN_ALIAS_BIT</a> = 0x00000200
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> = 0x00000400
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a> = 0x00000800
, <br />
&#160;&#160;<a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11337f96eacf34c1016c339eac165cad">VMA_ALLOCATION_CREATE_HOST_ACCESS_ALLOW_TRANSFER_INSTEAD_BIT</a> = 0x00001000
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a8af1210cf591784afa026d94998f735d">VMA_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT</a> = 0x00010000
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a0729e932b7ea170e3a128cad96c5cf6d">VMA_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT</a> = 0x00020000
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a839826775c62319466441f86496f036d">VMA_ALLOCATION_CREATE_STRATEGY_BEST_FIT_BIT</a> = VMA_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT
, <br />
&#160;&#160;<a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a839826775c62319466441f86496f036d">VMA_ALLOCATION_CREATE_STRATEGY_BEST_FIT_BIT</a> = VMA_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a33eb2052674f3ad92386c714a65fb777">VMA_ALLOCATION_CREATE_STRATEGY_FIRST_FIT_BIT</a> = VMA_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT
&#160;&#160;<a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a33eb2052674f3ad92386c714a65fb777">VMA_ALLOCATION_CREATE_STRATEGY_FIRST_FIT_BIT</a> = VMA_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a8e16845d81ae3d27c47106d4770d5c7e">VMA_ALLOCATION_CREATE_STRATEGY_MASK</a>
, <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597ae5633ec569f4899cf8f29e7385b2f882">VMA_ALLOCATION_CREATE_FLAG_BITS_MAX_ENUM</a> = 0x7FFFFFFF
<br />
@ -588,9 +596,9 @@ Functions</h2></td></tr>
<p >Pointer to mapped memory will be returned through <a class="el" href="struct_vma_allocation_info.html#a5eeffbe2d2f30f53370ff14aefbadbe2" title="Pointer to the beginning of this allocation as mapped data.">VmaAllocationInfo::pMappedData</a>.</p>
<p >It is valid to use this flag for allocation made from memory type that is not <code>HOST_VISIBLE</code>. This flag is then ignored and memory is not mapped. This is useful if you need an allocation that is efficient to use on GPU (<code>DEVICE_LOCAL</code>) and still want to map it directly if possible on platforms that support it (e.g. Intel GPU). </p>
</td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597ad7e8035e8edecd8dfa1f32a194bdf103" name="ggad9889c10c798b040d59c92f257cae597ad7e8035e8edecd8dfa1f32a194bdf103"></a>VMA_ALLOCATION_CREATE_RESERVED_1_BIT&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000003">Deprecated:</a></b></dt><dd>Removed. Do not use. </dd></dl>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597ad7e8035e8edecd8dfa1f32a194bdf103" name="ggad9889c10c798b040d59c92f257cae597ad7e8035e8edecd8dfa1f32a194bdf103"></a>VMA_ALLOCATION_CREATE_RESERVED_1_BIT&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000008">Deprecated:</a></b></dt><dd>Removed. Do not use. </dd></dl>
</td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597ae9290dbcf5817e7616d5802e2aa251e7" name="ggad9889c10c798b040d59c92f257cae597ae9290dbcf5817e7616d5802e2aa251e7"></a>VMA_ALLOCATION_CREATE_RESERVED_2_BIT&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000004">Deprecated:</a></b></dt><dd>Removed. Do not use. </dd></dl>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597ae9290dbcf5817e7616d5802e2aa251e7" name="ggad9889c10c798b040d59c92f257cae597ae9290dbcf5817e7616d5802e2aa251e7"></a>VMA_ALLOCATION_CREATE_RESERVED_2_BIT&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000009">Deprecated:</a></b></dt><dd>Removed. Do not use. </dd></dl>
</td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597aa6f24f821cd6a7c5e4a443f7bf59c520" name="ggad9889c10c798b040d59c92f257cae597aa6f24f821cd6a7c5e4a443f7bf59c520"></a>VMA_ALLOCATION_CREATE_USER_DATA_COPY_STRING_BIT&#160;</td><td class="fielddoc"><p >Set this flag to treat <a class="el" href="struct_vma_allocation_create_info.html#a8259e85c272683434f4abb4ddddffe19" title="Custom general-purpose pointer that will be stored in VmaAllocation, can be read as VmaAllocationInfo...">VmaAllocationCreateInfo::pUserData</a> as pointer to a null-terminated string. Instead of copying pointer value, a local copy of the string is made and stored in allocation's <code>pUserData</code>. The string is automatically freed together with the allocation. It is also used in <a class="el" href="group__group__stats.html#gaa4fee7eb5253377599ef4fd38c93c2a0" title="Builds and returns statistics as a null-terminated string in JSON format.">vmaBuildStatsString()</a>. </p>
</td></tr>
@ -604,6 +612,24 @@ Functions</h2></td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597afb0ee060cd733aaa5e249704ff589ad6" name="ggad9889c10c798b040d59c92f257cae597afb0ee060cd733aaa5e249704ff589ad6"></a>VMA_ALLOCATION_CREATE_CAN_ALIAS_BIT&#160;</td><td class="fielddoc"><p >Set this flag if the allocated memory will have aliasing resources. </p>
<p >Usage of this flag prevents supplying <code>VkMemoryDedicatedAllocateInfoKHR</code> when <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a3fc311d855c2ff53f1090ef5c722b38f" title="Set this flag if the allocation should have its own memory block.">VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT</a> is specified. Otherwise created dedicated memory will not be suitable for aliasing resources, resulting in Vulkan Validation Layer errors. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5" name="ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5"></a>VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT&#160;</td><td class="fielddoc"><p >Requests possibility to map the allocation (using <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a>).</p>
<ul>
<li>If you use <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a> or other <code>VMA_MEMORY_USAGE_AUTO*</code> value, you must use this flag to be able to map the allocation. Otherwise, mapping is incorrect.</li>
<li>If you use other value of <a class="el" href="group__group__alloc.html#gaa5846affa1e9da3800e3e78fae2305cc" title="Intended usage of the allocated memory.">VmaMemoryUsage</a>, this flag is ignored and mapping is always possible in memory types that are <code>HOST_VISIBLE</code>. This includes allocations created in <a class="el" href="custom_memory_pools.html">Custom memory pools</a>.</li>
</ul>
<p >Declares that mapped memory will only be written sequentially, e.g. using <code>memcpy()</code> or a loop writing number-by-number, never read or accessed randomly, so a memory type can be selected that is uncached and write-combined.</p>
<dl class="section warning"><dt>Warning</dt><dd>Violating this declaration may work correctly, but will likely be very slow. Watch out for implicit reads introduces by doing e.g. <code>pMappedData[i] += x;</code> Better prepare your data in a local variable and <code>memcpy()</code> it to the mapped pointer all at once. </dd></dl>
</td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492" name="ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492"></a>VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT&#160;</td><td class="fielddoc"><p >Requests possibility to map the allocation (using <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a>).</p>
<ul>
<li>If you use <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a> or other <code>VMA_MEMORY_USAGE_AUTO*</code> value, you must use this flag to be able to map the allocation. Otherwise, mapping is incorrect.</li>
<li>If you use other value of <a class="el" href="group__group__alloc.html#gaa5846affa1e9da3800e3e78fae2305cc" title="Intended usage of the allocated memory.">VmaMemoryUsage</a>, this flag is ignored and mapping is always possible in memory types that are <code>HOST_VISIBLE</code>. This includes allocations created in <a class="el" href="custom_memory_pools.html">Custom memory pools</a>.</li>
</ul>
<p >Declares that mapped memory can be read, written, and accessed in random order, so a <code>HOST_CACHED</code> memory type is preferred. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597a11337f96eacf34c1016c339eac165cad" name="ggad9889c10c798b040d59c92f257cae597a11337f96eacf34c1016c339eac165cad"></a>VMA_ALLOCATION_CREATE_HOST_ACCESS_ALLOW_TRANSFER_INSTEAD_BIT&#160;</td><td class="fielddoc"><p >Together with <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a>, it says that despite request for host access, a not-<code>HOST_VISIBLE</code> memory type can be selected if it may improve performance.</p>
<p >By using this flag, you declare that you will check if the allocation ended up in a <code>HOST_VISIBLE</code> memory type (e.g. using <a class="el" href="group__group__alloc.html#ga571e87dd38e552249b56b1b0b982fad1" title="Given an allocation, returns Property Flags of its memory type.">vmaGetAllocationMemoryProperties()</a>) and if not, you will create some "staging" buffer and issue an explicit transfer to write/read your data. To prepare for this possibility, don't forget to add appropriate flags like <code>VK_BUFFER_USAGE_TRANSFER_DST_BIT</code>, <code>VK_BUFFER_USAGE_TRANSFER_SRC_BIT</code> to the parameters of created buffer or image. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597a8af1210cf591784afa026d94998f735d" name="ggad9889c10c798b040d59c92f257cae597a8af1210cf591784afa026d94998f735d"></a>VMA_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT&#160;</td><td class="fielddoc"><p >Allocation strategy that chooses smallest possible free range for the allocation to minimize memory usage and fragmentation, possibly at the expense of allocation time. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597a0729e932b7ea170e3a128cad96c5cf6d" name="ggad9889c10c798b040d59c92f257cae597a0729e932b7ea170e3a128cad96c5cf6d"></a>VMA_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT&#160;</td><td class="fielddoc"><p >Allocation strategy that chooses first suitable free range for the allocation - not necessarily in terms of the smallest offset but the one that is easiest and fastest to find to minimize allocation time, possibly at the expense of allocation quality. </p>
@ -655,34 +681,32 @@ Functions</h2></td></tr>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305ccaf50d27e34e0925cf3a63db8c839121dd" name="ggaa5846affa1e9da3800e3e78fae2305ccaf50d27e34e0925cf3a63db8c839121dd"></a>VMA_MEMORY_USAGE_UNKNOWN&#160;</td><td class="fielddoc"><p >No intended memory usage specified. Use other members of <a class="el" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> to specify your requirements. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305ccac6b5dc1432d88647aa4cd456246eadf7" name="ggaa5846affa1e9da3800e3e78fae2305ccac6b5dc1432d88647aa4cd456246eadf7"></a>VMA_MEMORY_USAGE_GPU_ONLY&#160;</td><td class="fielddoc"><p >Memory will be used on device only, so fast access from the device is preferred. It usually means device-local GPU (video) memory. No need to be mappable on host. It is roughly equivalent of <code>D3D12_HEAP_TYPE_DEFAULT</code>.</p>
<p >Usage:</p>
<ul>
<li>Resources written and read by device, e.g. images used as attachments.</li>
<li>Resources transferred from host once (immutable) or infrequently and read by device multiple times, e.g. textures to be sampled, vertex buffers, uniform (constant) buffers, and majority of other types of resources used on GPU.</li>
</ul>
<p >Allocation may still end up in <code>HOST_VISIBLE</code> memory on some implementations. In such case, you are free to map it. You can use <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a> with this usage type. </p>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305ccac6b5dc1432d88647aa4cd456246eadf7" name="ggaa5846affa1e9da3800e3e78fae2305ccac6b5dc1432d88647aa4cd456246eadf7"></a>VMA_MEMORY_USAGE_GPU_ONLY&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000003">Deprecated:</a></b></dt><dd>Obsolete, preserved for backward compatibility. Prefers <code>VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT</code>. </dd></dl>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca40bdf4cddeffeb12f43d45ca1286e0a5" name="ggaa5846affa1e9da3800e3e78fae2305cca40bdf4cddeffeb12f43d45ca1286e0a5"></a>VMA_MEMORY_USAGE_CPU_ONLY&#160;</td><td class="fielddoc"><p >Memory will be mappable on host. It usually means CPU (system) memory. Guarantees to be <code>HOST_VISIBLE</code> and <code>HOST_COHERENT</code>. CPU access is typically uncached. Writes may be write-combined. Resources created in this pool may still be accessible to the device, but access to them can be slow. It is roughly equivalent of <code>D3D12_HEAP_TYPE_UPLOAD</code>.</p>
<p >Usage: Staging copy of resources used as transfer source. </p>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca40bdf4cddeffeb12f43d45ca1286e0a5" name="ggaa5846affa1e9da3800e3e78fae2305cca40bdf4cddeffeb12f43d45ca1286e0a5"></a>VMA_MEMORY_USAGE_CPU_ONLY&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000004">Deprecated:</a></b></dt><dd>Obsolete, preserved for backward compatibility. Guarantees <code>VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT</code> and <code>VK_MEMORY_PROPERTY_HOST_COHERENT_BIT</code>. </dd></dl>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca9066b52c5a7079bb74a69aaf8b92ff67" name="ggaa5846affa1e9da3800e3e78fae2305cca9066b52c5a7079bb74a69aaf8b92ff67"></a>VMA_MEMORY_USAGE_CPU_TO_GPU&#160;</td><td class="fielddoc"><p >Memory that is both mappable on host (guarantees to be <code>HOST_VISIBLE</code>) and preferably fast to access by GPU. CPU access is typically uncached. Writes may be write-combined.</p>
<p >Usage: Resources written frequently by host (dynamic), read by device. E.g. textures (with LINEAR layout), vertex buffers, uniform buffers updated every frame or every draw call. </p>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca9066b52c5a7079bb74a69aaf8b92ff67" name="ggaa5846affa1e9da3800e3e78fae2305cca9066b52c5a7079bb74a69aaf8b92ff67"></a>VMA_MEMORY_USAGE_CPU_TO_GPU&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000005">Deprecated:</a></b></dt><dd>Obsolete, preserved for backward compatibility. Guarantees <code>VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT</code>, prefers <code>VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT</code>. </dd></dl>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca7b586d2fdaf82a463b58f581ed72be27" name="ggaa5846affa1e9da3800e3e78fae2305cca7b586d2fdaf82a463b58f581ed72be27"></a>VMA_MEMORY_USAGE_GPU_TO_CPU&#160;</td><td class="fielddoc"><p >Memory mappable on host (guarantees to be <code>HOST_VISIBLE</code>) and cached. It is roughly equivalent of <code>D3D12_HEAP_TYPE_READBACK</code>.</p>
<p >Usage:</p>
<ul>
<li>Resources written by device, read by host - results of some computations, e.g. screen capture, average scene luminance for HDR tone mapping.</li>
<li>Any resources read or accessed randomly on host, e.g. CPU-side copy of vertex buffer used as source of transfer, but also used for collision detection. </li>
</ul>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca7b586d2fdaf82a463b58f581ed72be27" name="ggaa5846affa1e9da3800e3e78fae2305cca7b586d2fdaf82a463b58f581ed72be27"></a>VMA_MEMORY_USAGE_GPU_TO_CPU&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000006">Deprecated:</a></b></dt><dd>Obsolete, preserved for backward compatibility. Guarantees <code>VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT</code>, prefers <code>VK_MEMORY_PROPERTY_HOST_CACHED_BIT</code>. </dd></dl>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca416a444d4d0fc20067c3f76f32ff2500" name="ggaa5846affa1e9da3800e3e78fae2305cca416a444d4d0fc20067c3f76f32ff2500"></a>VMA_MEMORY_USAGE_CPU_COPY&#160;</td><td class="fielddoc"><p >CPU memory - memory that is preferably not <code>DEVICE_LOCAL</code>, but also not guaranteed to be <code>HOST_VISIBLE</code>.</p>
<p >Usage: Staging copy of resources moved from GPU memory to CPU memory as part of custom paging/residency mechanism, to be moved back to GPU memory when needed. </p>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca416a444d4d0fc20067c3f76f32ff2500" name="ggaa5846affa1e9da3800e3e78fae2305cca416a444d4d0fc20067c3f76f32ff2500"></a>VMA_MEMORY_USAGE_CPU_COPY&#160;</td><td class="fielddoc"><dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000007">Deprecated:</a></b></dt><dd>Obsolete, preserved for backward compatibility. Prefers not <code>VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT</code>. </dd></dl>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca835333d9072db63a653818030e17614d" name="ggaa5846affa1e9da3800e3e78fae2305cca835333d9072db63a653818030e17614d"></a>VMA_MEMORY_USAGE_GPU_LAZILY_ALLOCATED&#160;</td><td class="fielddoc"><p >Lazily allocated GPU memory having <code>VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT</code>. Exists mostly on mobile platforms. Using it on desktop PC or other GPUs with no such memory type present will fail the allocation.</p>
<p >Usage: Memory for transient attachment images (color attachments, depth attachments etc.), created with <code>VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT</code>.</p>
<p >Allocations with this usage are always created as dedicated - it implies <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a3fc311d855c2ff53f1090ef5c722b38f" title="Set this flag if the allocation should have its own memory block.">VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT</a>. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e" name="ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e"></a>VMA_MEMORY_USAGE_AUTO&#160;</td><td class="fielddoc"><p >Selects best memory type automatically. This flag is recommended for most common use cases.</p>
<p >When using this flag, if you want to map the allocation (using <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a>), you must pass one of the flags: <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a> in <a class="el" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b" title="Use VmaAllocationCreateFlagBits enum.">VmaAllocationCreateInfo::flags</a>.</p>
<p >It can be used only with functions that let the library know <code>VkBufferCreateInfo</code> or <code>VkImageCreateInfo</code>, e.g. <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer()</a>, <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a>, <a class="el" href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888" title="Helps to find memoryTypeIndex, given VkBufferCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForBufferInfo()</a>, <a class="el" href="group__group__alloc.html#ga088da83d8eaf3ce9056d9ea0b981d472" title="Helps to find memoryTypeIndex, given VkImageCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForImageInfo()</a> and not with generic memory allocation functions. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305ccae2adb696d6a73c18bb20c23666661327" name="ggaa5846affa1e9da3800e3e78fae2305ccae2adb696d6a73c18bb20c23666661327"></a>VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE&#160;</td><td class="fielddoc"><p >Selects best memory type automatically with preference for GPU (device) memory.</p>
<p >When using this flag, if you want to map the allocation (using <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a>), you must pass one of the flags: <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a> in <a class="el" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b" title="Use VmaAllocationCreateFlagBits enum.">VmaAllocationCreateInfo::flags</a>.</p>
<p >It can be used only with functions that let the library know <code>VkBufferCreateInfo</code> or <code>VkImageCreateInfo</code>, e.g. <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer()</a>, <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a>, <a class="el" href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888" title="Helps to find memoryTypeIndex, given VkBufferCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForBufferInfo()</a>, <a class="el" href="group__group__alloc.html#ga088da83d8eaf3ce9056d9ea0b981d472" title="Helps to find memoryTypeIndex, given VkImageCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForImageInfo()</a> and not with generic memory allocation functions. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca9b422585242160b8ed3418310ee6664d" name="ggaa5846affa1e9da3800e3e78fae2305cca9b422585242160b8ed3418310ee6664d"></a>VMA_MEMORY_USAGE_AUTO_PREFER_HOST&#160;</td><td class="fielddoc"><p >Selects best memory type automatically with preference for CPU (host) memory.</p>
<p >When using this flag, if you want to map the allocation (using <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a>), you must pass one of the flags: <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a> in <a class="el" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b" title="Use VmaAllocationCreateFlagBits enum.">VmaAllocationCreateInfo::flags</a>.</p>
<p >It can be used only with functions that let the library know <code>VkBufferCreateInfo</code> or <code>VkImageCreateInfo</code>, e.g. <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer()</a>, <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a>, <a class="el" href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888" title="Helps to find memoryTypeIndex, given VkBufferCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForBufferInfo()</a>, <a class="el" href="group__group__alloc.html#ga088da83d8eaf3ce9056d9ea0b981d472" title="Helps to find memoryTypeIndex, given VkImageCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForImageInfo()</a> and not with generic memory allocation functions. </p>
</td></tr>
<tr><td class="fieldname"><a id="ggaa5846affa1e9da3800e3e78fae2305cca091e69437ef693e8d0d287f1c719ba6e" name="ggaa5846affa1e9da3800e3e78fae2305cca091e69437ef693e8d0d287f1c719ba6e"></a>VMA_MEMORY_USAGE_MAX_ENUM&#160;</td><td class="fielddoc"></td></tr>
</table>
@ -1901,13 +1925,7 @@ Functions</h2></td></tr>
</div><div class="memdoc">
<p>Helps to find memoryTypeIndex, given VkBufferCreateInfo and <a class="el" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a>. </p>
<p >It can be useful e.g. to determine value to be used as <a class="el" href="struct_vma_pool_create_info.html#a596fa76b685d3f1f688f84a709a5b319" title="Vulkan memory type index to allocate this pool from.">VmaPoolCreateInfo::memoryTypeIndex</a>. It internally creates a temporary, dummy buffer that never has memory bound. It is just a convenience function, equivalent to calling:</p>
<ul>
<li><code>vkCreateBuffer</code></li>
<li><code>vkGetBufferMemoryRequirements</code></li>
<li><code>vmaFindMemoryTypeIndex</code></li>
<li><code>vkDestroyBuffer</code> </li>
</ul>
<p >It can be useful e.g. to determine value to be used as <a class="el" href="struct_vma_pool_create_info.html#a596fa76b685d3f1f688f84a709a5b319" title="Vulkan memory type index to allocate this pool from.">VmaPoolCreateInfo::memoryTypeIndex</a>. It internally creates a temporary, dummy buffer that never has memory bound. </p>
</div>
</div>
@ -1950,13 +1968,7 @@ Functions</h2></td></tr>
</div><div class="memdoc">
<p>Helps to find memoryTypeIndex, given VkImageCreateInfo and <a class="el" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a>. </p>
<p >It can be useful e.g. to determine value to be used as <a class="el" href="struct_vma_pool_create_info.html#a596fa76b685d3f1f688f84a709a5b319" title="Vulkan memory type index to allocate this pool from.">VmaPoolCreateInfo::memoryTypeIndex</a>. It internally creates a temporary, dummy image that never has memory bound. It is just a convenience function, equivalent to calling:</p>
<ul>
<li><code>vkCreateImage</code></li>
<li><code>vkGetImageMemoryRequirements</code></li>
<li><code>vmaFindMemoryTypeIndex</code></li>
<li><code>vkDestroyImage</code> </li>
</ul>
<p >It can be useful e.g. to determine value to be used as <a class="el" href="struct_vma_pool_create_info.html#a596fa76b685d3f1f688f84a709a5b319" title="Vulkan memory type index to allocate this pool from.">VmaPoolCreateInfo::memoryTypeIndex</a>. It internally creates a temporary, dummy image that never has memory bound. </p>
</div>
</div>