2016-07-11 01:13:41 +00:00
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// 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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2016-02-16 09:53:44 +00:00
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VkBufferMemoryBarrier(3)
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========================
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Name
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----
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VkBufferMemoryBarrier - Structure specifying the parameters of a buffer memory barrier.
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C Specification
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---------------
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2016-07-11 01:13:41 +00:00
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// refBegin VkBufferMemoryBarrier Structure specifying the parameters of a buffer memory barrier.
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2016-07-11 01:13:41 +00:00
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The sname:VkBufferMemoryBarrier structure is defined as:
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include::../structs/VkBufferMemoryBarrier.txt[]
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Members
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-------
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* pname:sType is the type of this structure.
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* pname:pNext is `NULL` or a pointer to an extension-specific structure.
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* pname:srcAccessMask is a bitmask of the classes of memory accesses
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performed by the first set of commands that will participate in
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the dependency.
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* pname:dstAccessMask is a bitmask of the classes of memory accesses
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performed by the second set of commands that will participate in
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the dependency.
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* pname:srcQueueFamilyIndex is the queue family that is relinquishing
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ownership of the range of pname:buffer to another queue, or
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ename:VK_QUEUE_FAMILY_IGNORED if there is no transfer of ownership.
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* pname:dstQueueFamilyIndex is the queue family that is acquiring
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ownership of the range of pname:buffer from another queue, or
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ename:VK_QUEUE_FAMILY_IGNORED if there is no transfer of ownership.
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* pname:buffer is a handle to the buffer whose backing memory is affected
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by the barrier.
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* pname:offset is an offset in bytes into the backing memory for
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pname:buffer; this is relative to the base offset as bound to the buffer
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(see flink:vkBindBufferMemory).
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* pname:size is a size in bytes of the affected area of backing memory for
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pname:buffer, or ename:VK_WHOLE_SIZE to use the range from pname:offset
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to the end of the buffer.
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Description
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-----------
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include::../validity/structs/VkBufferMemoryBarrier.txt[]
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See Also
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--------
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Change log for July 15, 2016 Vulkan 1.0.21 spec update:
* Bump API patch number and header version number to 21 for this update.
Github Issues:
* Clarify how <<features-supported-sample-counts,sample count queries>>
relate to the limits in slink:VkPhysicalDeviceLimits. (public issue
185).
* Clarify in the <<interfaces-iointerfaces,Shader Input and Output
Interfaces>> section that shader output variables have undefined values
until the shader writes to them (public issue 240).
* Specify the implicit value of image parameters that cannot be set in
slink:VkSwapchainCreateInfo::pname:flags, pname:imageType,
pname:mipLevels, pname:samples, pname:tiling, and pname:initialLayout
(public issue 243).
* Make use of code:NULL and code:VK_NULL_HANDLE consistent in the
VK_KHR_swapchain extension (public issue 276).
Internal Issues:
* Clarify that presenting an image to a display surface swapchain applies
the display surface's mode, and that destroying a display surface
swapchain may reset the display's mode, in the VK_KHR_display_swapchain
extension (internal issue 247).
* Better describe what a slink:VkSurfaceKHR is, and that creating one does
not set a mode, in the VK_KHR_display extension. This is a round-about
way of pointing out that mode setting is not covered by the extension,
but rather is performed as a side effect of presentation (internal issue
247).
* Add more valid usage statements to flink:vkQueuePresentKHR command when
the VK_KHR_display_swapchain extension is present (internal issue
247).
* Add more includes to the VK_KHR_swapchain extension to better document
interactions with VK_KHR_display_swapchain (internal issue 247).
* Clarify restrictions on location aliasing in the
<<fxvertex,Fixed-Function Vertex Processing>> section (internal issue
370).
* Add mathematical description of blitting to flink:vkCmdBlitImage, and
link it to the <<textures,Image Operations>> chapter. Use mathematical
notation for ranges of texel coordinates in the <<textures,Image
Operations>> chapter. Fixed miscellaneous validity statements for
flink:vkCmdBlit and slink:VkImageBlit (internal issue 382).
Other Commits:
* Added a valid usage rule to flink:VkGraphicsPipelineCreateInfo that the
ename:VK_PRIMITIVE_TOPOLOGY_PATCH_LIST topology must only be used when
tessellation shaders are used.
* Expand the style guide into a formal "Procedures and Conventions"
document. Add a API Naming Conventions section, move most of the API
Specification Appendix C (Layers and Extensions) content into the new
document, and define the resulting procedures as mandatory (where
relevant). This more clearly separates use vs. specification of Vulkan
APIs.
* Update vk_platform.h to handle 32-bit ARMv8 binaries.
* Various minor cleanups to the Makefile and build process.
2016-07-16 02:05:43 +00:00
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elink:VkAccessFlags, slink:VkBuffer, basetype:VkDeviceSize, elink:VkStructureType, flink:vkCmdPipelineBarrier, flink:vkCmdWaitEvents
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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#VkBufferMemoryBarrier
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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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