Vulkan-Docs/doc/specs/vulkan/man/vkCmdDrawIndexedIndirect.txt

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// Copyright (c) 2014-2016 Khronos Group. This work is licensed under a
// Creative Commons Attribution 4.0 International License; see
// http://creativecommons.org/licenses/by/4.0/
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vkCmdDrawIndexedIndirect(3)
===========================
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Name
----
vkCmdDrawIndexedIndirect - Perform an indexed indirect draw.
C Specification
---------------
// refBegin vkCmdDrawIndexedIndirect Perform an indexed indirect draw.
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To record an indexed indirect draw, call:
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include::../protos/vkCmdDrawIndexedIndirect.txt[]
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Parameters
----------
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* pname:commandBuffer is the command buffer into which the command is
recorded.
* pname:buffer is the buffer containing draw parameters.
* pname:offset is the byte offset into pname:buffer where parameters
begin.
* pname:drawCount is the number of draws to execute, and can: be zero.
* pname:stride is the byte stride between successive sets of draw
parameters.
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Description
-----------
fname:vkCmdDrawIndexedIndirect behaves similarly to flink:vkCmdDrawIndirect
except that the parameters are read by the device from a buffer during
execution. pname:drawCount draws are executed by the command, with
parameters taken from pname:buffer starting at pname:offset and increasing
by pname:stride bytes for each successive draw. The parameters of each draw
are encoded in an array of slink:VkDrawIndexedIndirectCommand structures. If
pname:drawCount is less than or equal to one, pname:stride is ignored.
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include::../validity/protos/vkCmdDrawIndexedIndirect.txt[]
See Also
--------
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.
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slink:VkBuffer, slink:VkCommandBuffer, basetype:VkDeviceSize
Document Notes
--------------
For more information, see the Vulkan Specification at URL
https://www.khronos.org/registry/vulkan/specs/1.0/xhtml/vkspec.html#vkCmdDrawIndexedIndirect
This page is extracted from the Vulkan Specification.
Fixes and changes should be made to the Specification,not directly.
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include::footer.txt[]