88 lines
3.4 KiB
Plaintext
88 lines
3.4 KiB
Plaintext
// Copyright (c) 2014-2016 Khronos Group. This work is licensed under a
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// Creative Commons Attribution 4.0 International License; see
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// http://creativecommons.org/licenses/by/4.0/
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VkSparseImageMemoryRequirements(3)
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==================================
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Name
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----
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VkSparseImageMemoryRequirements - Structure specifying sparse image memory requirements
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C Specification
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---------------
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// refBegin VkSparseImageMemoryRequirements - Structure specifying sparse image memory requirements
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The sname:VkSparseImageMemoryRequirements structure is defined as:
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include::../api/structs/VkSparseImageMemoryRequirements.txt[]
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Members
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-------
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* pname:formatProperties.aspectMask is the set of aspects of the image
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that this sparse memory requirement applies to. This will usually have a
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single aspect specified. However, depth/stencil images may: have depth
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and stencil data interleaved in the same sparse block, in which case
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both ename:VK_IMAGE_ASPECT_DEPTH_BIT and
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ename:VK_IMAGE_ASPECT_STENCIL_BIT would be present.
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* pname:formatProperties.imageGranularity describes the dimensions of a
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single bindable sparse image block in pixel units. For aspect
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ename:VK_IMAGE_ASPECT_METADATA_BIT, all dimensions will be zero
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pixels. All metadata is located in the mip tail region.
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* pname:formatProperties.flags is a bitmask of
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elink:VkSparseImageFormatFlagBits:
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** If ename:VK_SPARSE_IMAGE_FORMAT_SINGLE_MIPTAIL_BIT is set the image
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uses a single mip tail region for all array layers.
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** If ename:VK_SPARSE_IMAGE_FORMAT_ALIGNED_MIP_SIZE_BIT is set the
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dimensions of mip levels must: be integer multiples of the corresponding
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dimensions of the sparse image block for levels not located in the mip
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tail.
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** If ename:VK_SPARSE_IMAGE_FORMAT_NONSTANDARD_BLOCK_SIZE_BIT is set the
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image uses non-standard sparse image block dimensions. The
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pname:formatProperties.imageGranularity values do not match the
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standard sparse image block dimension corresponding to the image's
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pixel format.
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* pname:imageMipTailFirstLod is the first mip level at which image
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subresources are included in the mip tail region.
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* pname:imageMipTailSize is the memory size (in bytes) of the mip tail
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region. If pname:formatProperties.flags contains
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ename:VK_SPARSE_IMAGE_FORMAT_SINGLE_MIPTAIL_BIT, this is the size of the
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whole mip tail, otherwise this is the size of the mip tail of a single
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array layer. This value is guaranteed to be a multiple of the sparse block
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size in bytes.
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* pname:imageMipTailOffset is the opaque memory offset used with
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slink:VkSparseImageOpaqueMemoryBindInfo to bind the mip tail region(s).
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* pname:imageMipTailStride is the offset stride between each array-layer's
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mip tail, if pname:formatProperties.flags does not contain
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ename:VK_SPARSE_IMAGE_FORMAT_SINGLE_MIPTAIL_BIT (otherwise the value is
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undefined).
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Description
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-----------
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include::../validity/structs/VkSparseImageMemoryRequirements.txt[]
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See Also
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--------
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basetype:VkDeviceSize, slink:VkSparseImageFormatProperties, flink:vkGetImageSparseMemoryRequirements
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Document Notes
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--------------
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For more information, see the Vulkan Specification at URL
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https://www.khronos.org/registry/vulkan/specs/1.0/xhtml/vkspec.html#VkSparseImageMemoryRequirements
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This page is extracted from the Vulkan Specification.
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Fixes and changes should be made to the Specification,not directly.
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include::footer.txt[]
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