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1ca0ea1ef0
* Bump API patch number and header version number to 22 for this update.
Github Issues:
* Translate the subpass self-dependency language into concrete
validity statements, and added a validity statement about the
restrictions on layout parameters (public issue 267).
* Add validity requirement that
slink:VkAttachmentDescription::pname:finalLayout and
slink:VkAttachmentReference::pname:layout must not be
ename:VK_IMAGE_LAYOUT_UNDEFINED or
ename:VK_IMAGE_LAYOUT_PREINITIALIZED (public issue 268).
* Clarify that slink:VkSubpassDescription::pname:pResolveAttachments
layouts are used. Make language consistent with other attachment
arrays (public issue 270).
* Changed 64-bit definition for
dname:VK_DEFINE_NON_DISPATCHABLE_HANDLE to work for x32 platform in
+vk.xml+ and the resulting +vulkan.h+ (public issue 282).
* Add missing error return code for
flink:vkEnumerateInstanceExtensionProperties and
flink:vkEnumerateDeviceExtensionProperties (public issue 285)
* Fix several cases of stext::VkStructName.memberName markup to
stext::VkStructName::pname:memberName, to match other usage in the
spec, and describe this markup in the style guide (public issue
286).
* Modified validity language generation script to avoid redundant
common ancestor language if covered by generic parent language, and
used `Both' instead of `Each' when appropriate (public issue 288).
Internal Issues:
* Add language about behavior of flink:vkAllocateDescriptorSets when
allocation fails due to fragmentation, a new error
ename:VK_ERROR_FRAGMENTED_POOL, and a Note explaining the situation
(internal issue 309).
* For the features of code:PointSize, code:ClipDistance, and
code:CullDistance, the SPIR-V capability is required to be declared
on use (read or write) rather than on decoration (internal issue
359).
* Have desktop versions of GLSL respect precision qualification
(code:mediump and code:lowp) when compiling for Vulkan. These will
get translated to SPIR-V's code:RelaxedPrecision decoration as they
do with OpenGL ES versions of GLSL (ESSL). The default precision of
all types is code:highp when using a desktop version (internal issue
360).
* Add validity statement for slink:VkImageCreateInfo specifying that
multisampled images must be two-dimensional, optimally tiled, and
with a single mipmap level (internal issue 369).
* Add validity statements to slink:VkImageViewCreateInfo disallowing
creation of images or image views with no supported features. Made
some slink:VkImageViewCreateInfo validity statements more precise
and consistent. Added a Note to the <<features,features>> chapter
about formats with no features (internal issue 371).
* Remove +manpages+ from default build targets. Nroff outputs
containing imbedded latexmath will not render properly. Fixing this
is a lot of work for limited use cases (internal issue 401).
Other Commits:
* Fix flink:vkRenderPassBeginInfo::pname:clearValueCount validity
statement to be based on attachment indices rather than the number
of cleared attachments
(Vulkan-LoaderAndValidationLayers/issues/601).
* Convert registry documentation from LaTeX to asciidoc source and
rename from +src/spec/readme.tex+ to +src/spec/registry.txt+.
* Fix lack of Oxford commas in validity language.
* Lots of cleanup of generator scripts and Makefiles to move extension
list for generator into the script arguments instead of the body of
genvk.py, and express better dependencies between XML, scripts, and
generated files.
81 lines
2.5 KiB
Plaintext
81 lines
2.5 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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vkCmdDrawIndexed(3)
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===================
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Name
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----
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vkCmdDrawIndexed - Issue an indexed draw into a command buffer.
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C Specification
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---------------
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// refBegin vkCmdDrawIndexed Issue an indexed draw into a command buffer.
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To record an indexed draw, call:
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include::../api/protos/vkCmdDrawIndexed.txt[]
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Parameters
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----------
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* pname:commandBuffer is the command buffer into which the command is
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recorded.
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* pname:indexCount is the number of vertices to draw.
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* pname:instanceCount is the number of instances to draw.
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* pname:firstIndex is the base index within the index buffer.
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* pname:vertexOffset is the value added to the vertex index before indexing
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into the vertex buffer.
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* pname:firstInstance is the instance ID of the first instance to draw.
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Description
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-----------
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When the command is executed, primitives are assembled using the current
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primitive topology and pname:indexCount vertices whose indices are retrieved
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from the index buffer. The index buffer is treated as an array of tightly
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packed unsigned integers of size defined by the
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flink:vkCmdBindIndexBuffer::pname:indexType parameter with which the buffer
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was bound.
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The first vertex index is at an offset of pname:firstIndex * code:indexSize
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+ pname:offset within the currently bound index buffer, where pname:offset
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is the offset specified by fname:vkCmdBindIndexBuffer and code:indexSize is
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the byte size of the type specified by pname:indexType. Subsequent index
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values are retrieved from consecutive locations in the index buffer. Indices
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are first compared to the primitive restart value, then zero extended to 32
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bits (if the code:indexType is ename:VK_INDEX_TYPE_UINT16) and have
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pname:vertexOffset added to them, before being supplied as the
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code:vertexIndex value.
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The primitives are drawn pname:instanceCount times with code:instanceIndex
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starting with pname:firstInstance and increasing sequentially for each
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instance. The assembled primitives execute the currently bound graphics
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pipeline.
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include::../validity/protos/vkCmdDrawIndexed.txt[]
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See Also
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--------
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slink:VkCommandBuffer
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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#vkCmdDrawIndexed
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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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