72 lines
2.0 KiB
Plaintext
72 lines
2.0 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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vkGetDeviceProcAddr(3)
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======================
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Name
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----
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vkGetDeviceProcAddr - Return a function pointer for a command
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C Specification
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---------------
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// refBegin vkGetDeviceProcAddr Return a function pointer for a command
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In order to support systems with multiple Vulkan implementations
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comprising heterogeneous collections of hardware and software, the function
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pointers returned by fname:vkGetInstanceProcAddr may: point to dispatch
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code, which calls a different real implementation for different
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sname:VkDevice objects (and objects created from them). The overhead of this
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internal dispatch can: be avoided by obtaining device-specific function
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pointers for any commands that use a device or device-child object as their
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dispatchable object. Such function pointers can: be obtained with the
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command:
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include::../protos/vkGetDeviceProcAddr.txt[]
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Parameters
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----------
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* pname:device is the logical device that provides the function pointer.
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* pname:pName is the name of any Vulkan command whose first parameter
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is one of
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** sname:VkDevice
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** sname:VkQueue
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** sname:VkCommandBuffer
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Description
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-----------
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The returned function pointer is of type tlink:PFN_vkVoidFunction, and must
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be cast to the type of the command being queried.
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If pname:pName is not the name of one of these Vulkan commands, and is
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not the name of an extension command belonging to an extension enabled for
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pname:device, then fname:vkGetDeviceProcAddr will return `NULL`.
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include::../validity/protos/vkGetDeviceProcAddr.txt[]
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See Also
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--------
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slink:VkDevice
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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#vkGetDeviceProcAddr
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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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