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* Update release number to 98.
Public Issues:
* Fix missing markup in flink:vkDestroyPipelineLayout valid usage
statement (pull request 882).
* Add missing contributors for `<<VK_EXT_buffer_device_address>>` (public
pull request 891).
Internal Issues:
* Detect nested bullet points in valid usage blocks and warn about them
during VUID assignment (internal issue 1382).
* Update the style guide to document the process for reserving new bits in
bitmask types (internal issue 1411).
* Clarify for slink:VkApplicationInfo::pname:apiVersion and in the
<<fundamentals-validusage-versions, Valid Usage for Newer Core
Versions>> section when it is valid for an application to use a certain
version of Vulkan API functionality (for an instance and for a
device/physical device); and when the validation layers must generate an
error (internal issue 1412).
* Add optional <<memory-model-availability-visibility, transitive
availability/visibility operations to the memory model, including a new
pname:vulkanMemoryModelAvailabilityVisibilityChains feature for
slink:VkPhysicalDeviceVulkanMemoryModelFeaturesKHR (internal issue
1460).
* Add the code:StorageBuffer storage class to those in the
<<interfaces-resources-descset, Descriptor Set Interface>> (internal
issue 1480).
* Add missing `returnedonly` tags for a number of returned extension
structures that can be passed in pname:pNext chains (internal issue
1515).
* Clean up and rearrange some spec language for
slink:VkRenderPassCreateInfo and slink:VkAttachmentReference.txt
(internal issue 1522).
* Correctly round the code:OpVectorTimesScalar and
code:OpMatrixTimesScalar SPIR-V operations in the <<Precision of core
SPIR-V Instructions>> table (internal merge request 2996).
* Work around cases in flink:vkCmdBeginTransformFeedbackEXT,
flink:vkCmdEndTransformFeedbackEXT, and
slink:VkPipelineCoverageModulationStateCreateInfoNV where an array
parameter is `optional` but the length is not in `vk.xml`. This is an
interim fix using `noautovalidity` + handcoded VU replacing those that
should be autogenerated (internal issue 2944 and
https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/480).
* Remove redundant capability validation of the code:float16 and code:int8
SPIR-V capabilities from the <<spirvenv-capabilities, Capabilities>>
section, since they are already covered in the preceding table.
* Update check_spec_links script, including validation for reference page
open blocks. Fix errors identified by the script.
106 lines
3.2 KiB
Plaintext
106 lines
3.2 KiB
Plaintext
include::meta/VK_NV_viewport_array2.txt[]
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*Last Modified Date*::
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2017-02-15
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*Interactions and External Dependencies*::
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- This extension requires the
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https://www.khronos.org/registry/spir-v/extensions/NV/SPV_NV_viewport_array2.html[`SPV_NV_viewport_array2`]
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SPIR-V extension.
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- This extension requires the
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https://www.khronos.org/registry/OpenGL/extensions/NV/NV_viewport_array2.txt[`GL_NV_viewport_array2`]
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extension for GLSL source languages.
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- This extension requires the pname:geometryShader and pname:multiViewport
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features.
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- This extension interacts with the pname:tessellationShader feature.
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*Contributors*::
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- Piers Daniell, NVIDIA
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- Jeff Bolz, NVIDIA
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This extension adds support for the following SPIR-V extension in Vulkan:
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* `SPV_NV_viewport_array2`
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which allows a single primitive to be broadcast to multiple viewports and/or
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multiple layers.
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A new shader built-in output code:ViewportMaskNV is provided, which allows a
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single primitive to be output to multiple viewports simultaneously.
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Also, a new SPIR-V decoration is added to control whether the effective
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viewport index is added into the variable decorated with the code:Layer
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built-in decoration.
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These capabilities allow a single primitive to be output to multiple layers
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simultaneously.
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This extension allows variables decorated with the code:Layer and
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code:ViewportIndex built-ins to be exported from vertex or tessellation
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shaders, using the code:ShaderViewportIndexLayerNV capability.
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This extension adds a new code:ViewportMaskNV built-in decoration that is
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available for output variables in vertex, tessellation evaluation, and
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geometry shaders, and a new code:ViewportRelativeNV decoration that can be
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added on variables decorated with code:Layer when using the
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code:ShaderViewportMaskNV capability.
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When using GLSL source-based shading languages, the code:gl_ViewportMask[]
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built-in output variable and code:viewport_relative layout qualifier from
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`GL_NV_viewport_array2` map to the code:ViewportMaskNV and
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code:ViewportRelativeNV decorations, respectively.
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Behaviour is described in the `GL_NV_viewport_array2` extension
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specificiation.
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ifdef::VK_EXT_shader_viewport_index_layer[]
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[NOTE]
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.Note
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====
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The code:ShaderViewportIndexLayerNV capability is equivalent to the
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code:ShaderViewportIndexLayerEXT capability added by
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`<<VK_EXT_shader_viewport_index_layer>>`.
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====
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endif::VK_EXT_shader_viewport_index_layer[]
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=== New Object Types
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None.
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=== New Enum Constants
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None.
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=== New Enums
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None.
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=== New Structures
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None.
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=== New Functions
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None.
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=== New or Modified Built-In Variables
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* (modified) <<interfaces-builtin-variables-layer,code:Layer>>
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* (modified)
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<<interfaces-builtin-variables-viewportindex,code:ViewportIndex>>
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* <<interfaces-builtin-variables-viewportmask,code:ViewportMaskNV>>
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=== New Variable Decoration
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* <<interfaces-builtin-variables-layer,code:ViewportRelativeNV in
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code:Layer>>
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=== New SPIR-V Capabilities
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* <<spirvenv-capabilities-table-viewportarray2,code:ShaderViewportIndexLayerNV>>
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* <<spirvenv-capabilities-table-viewportarray2,code:ShaderViewportMaskNV>>
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=== Issues
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None yet!
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=== Version History
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* Revision 1, 2017-02-15 (Daniel Koch)
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- Internal revisions
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