{-# language CPP #-}
-- | = Name
--
-- VK_NVX_multiview_per_view_attributes - device extension
--
-- == VK_NVX_multiview_per_view_attributes
--
-- [__Name String__]
--     @VK_NVX_multiview_per_view_attributes@
--
-- [__Extension Type__]
--     Device extension
--
-- [__Registered Extension Number__]
--     98
--
-- [__Revision__]
--     1
--
-- [__Extension and Version Dependencies__]
--
--     -   Requires Vulkan 1.0
--
--     -   Requires @VK_KHR_multiview@
--
-- [__Contact__]
--
--     -   Jeff Bolz
--         <https://github.com/KhronosGroup/Vulkan-Docs/issues/new?body=[VK_NVX_multiview_per_view_attributes] @jeffbolznv%0A<<Here describe the issue or question you have about the VK_NVX_multiview_per_view_attributes extension>> >
--
-- == Other Extension Metadata
--
-- [__Last Modified Date__]
--     2017-01-13
--
-- [__IP Status__]
--     No known IP claims.
--
-- [__Interactions and External Dependencies__]
--
--     -   This extension requires
--         <https://htmlpreview.github.io/?https://github.com/KhronosGroup/SPIRV-Registry/blob/master/extensions/NV/SPV_NVX_multiview_per_view_attributes.html SPV_NVX_multiview_per_view_attributes>
--
--     -   This extension provides API support for
--         <https://github.com/KhronosGroup/GLSL/blob/master/extensions/nvx/GL_NVX_multiview_per_view_attributes.txt GL_NVX_multiview_per_view_attributes>
--
--     -   This extension interacts with @VK_NV_viewport_array2@.
--
-- [__Contributors__]
--
--     -   Jeff Bolz, NVIDIA
--
--     -   Daniel Koch, NVIDIA
--
-- == Description
--
-- This extension adds a new way to write shaders to be used with multiview
-- subpasses, where the attributes for all views are written out by a
-- single invocation of the
-- <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#pipeline-graphics-subsets-pre-rasterization pre-rasterization shader stages>.
-- Related SPIR-V and GLSL extensions
-- @SPV_NVX_multiview_per_view_attributes@ and
-- @GL_NVX_multiview_per_view_attributes@ introduce per-view position and
-- viewport mask attributes arrays, and this extension defines how those
-- per-view attribute arrays are interpreted by Vulkan. Pipelines using
-- per-view attributes /may/ only execute the
-- <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#pipeline-graphics-subsets-pre-rasterization pre-rasterization shader stages>
-- once for all views rather than once per-view, which reduces redundant
-- shading work.
--
-- A subpass creation flag controls whether the subpass uses this
-- extension. A subpass /must/ either exclusively use this extension or not
-- use it at all.
--
-- Some Vulkan implementations only support the position attribute varying
-- between views in the X component. A subpass can declare via a second
-- creation flag whether all pipelines compiled for this subpass will obey
-- this restriction.
--
-- Shaders that use the new per-view outputs (e.g. @gl_PositionPerViewNV@)
-- /must/ also write the non-per-view output (@gl_Position@), and the
-- values written /must/ be such that @gl_Position =
-- gl_PositionPerViewNV[gl_ViewIndex]@ for all views in the subpass.
-- Implementations are free to either use the per-view outputs or the
-- non-per-view outputs, whichever would be more efficient.
--
-- If @VK_NV_viewport_array2@ is not also supported and enabled, the
-- per-view viewport mask /must/ not be used.
--
-- == New Structures
--
-- -   Extending
--     'Vulkan.Core11.Promoted_From_VK_KHR_get_physical_device_properties2.PhysicalDeviceProperties2':
--
--     -   'PhysicalDeviceMultiviewPerViewAttributesPropertiesNVX'
--
-- == New Enum Constants
--
-- -   'NVX_MULTIVIEW_PER_VIEW_ATTRIBUTES_EXTENSION_NAME'
--
-- -   'NVX_MULTIVIEW_PER_VIEW_ATTRIBUTES_SPEC_VERSION'
--
-- -   Extending 'Vulkan.Core10.Enums.StructureType.StructureType':
--
--     -   'Vulkan.Core10.Enums.StructureType.STRUCTURE_TYPE_PHYSICAL_DEVICE_MULTIVIEW_PER_VIEW_ATTRIBUTES_PROPERTIES_NVX'
--
-- -   Extending
--     'Vulkan.Core10.Enums.SubpassDescriptionFlagBits.SubpassDescriptionFlagBits':
--
--     -   'Vulkan.Core10.Enums.SubpassDescriptionFlagBits.SUBPASS_DESCRIPTION_PER_VIEW_ATTRIBUTES_BIT_NVX'
--
--     -   'Vulkan.Core10.Enums.SubpassDescriptionFlagBits.SUBPASS_DESCRIPTION_PER_VIEW_POSITION_X_ONLY_BIT_NVX'
--
-- == New Built-In Variables
--
-- -   <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#interfaces-builtin-variables-positionperview PositionPerViewNV>
--
-- -   <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#interfaces-builtin-variables-viewportmaskperview ViewportMaskPerViewNV>
--
-- == New SPIR-V Capabilities
--
-- -   <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#spirvenv-capabilities-table-PerViewAttributesNV PerViewAttributesNV>
--
-- == Examples
--
-- > #version 450 core
-- >
-- > #extension GL_KHX_multiview : enable
-- > #extension GL_NVX_multiview_per_view_attributes : enable
-- >
-- > layout(location = 0) in vec4 position;
-- > layout(set = 0, binding = 0) uniform Block { mat4 mvpPerView[2]; } buf;
-- >
-- > void main()
-- > {
-- >     // Output both per-view positions and gl_Position as a function
-- >     // of gl_ViewIndex
-- >     gl_PositionPerViewNV[0] = buf.mvpPerView[0] * position;
-- >     gl_PositionPerViewNV[1] = buf.mvpPerView[1] * position;
-- >     gl_Position = buf.mvpPerView[gl_ViewIndex] * position;
-- > }
--
-- == Version History
--
-- -   Revision 1, 2017-01-13 (Jeff Bolz)
--
--     -   Internal revisions
--
-- == See Also
--
-- 'PhysicalDeviceMultiviewPerViewAttributesPropertiesNVX'
--
-- == Document Notes
--
-- For more information, see the
-- <https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html#VK_NVX_multiview_per_view_attributes Vulkan Specification>
--
-- This page is a generated document. Fixes and changes should be made to
-- the generator scripts, not directly.
module Vulkan.Extensions.VK_NVX_multiview_per_view_attributes  (PhysicalDeviceMultiviewPerViewAttributesPropertiesNVX) where

import Vulkan.CStruct (FromCStruct)
import Vulkan.CStruct (ToCStruct)
import Data.Kind (Type)

data PhysicalDeviceMultiviewPerViewAttributesPropertiesNVX

instance ToCStruct PhysicalDeviceMultiviewPerViewAttributesPropertiesNVX
instance Show PhysicalDeviceMultiviewPerViewAttributesPropertiesNVX

instance FromCStruct PhysicalDeviceMultiviewPerViewAttributesPropertiesNVX