90 lines
2.9 KiB
Plaintext
90 lines
2.9 KiB
Plaintext
include::meta/VK_EXT_fragment_density_map.txt[]
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*Last Modified Date*::
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2018-09-25
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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/EXT/SPV_EXT_fragment_invocation_density.html[`SPV_EXT_fragment_invocation_density`]
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SPIR-V extension.
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*Contributors*::
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- Matthew Netsch, Qualcomm Technologies, Inc.
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- Robert VanReenen, Qualcomm Technologies, Inc.
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- Jonathan Wicks, Qualcomm Technologies, Inc.
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- Tate Hornbeck, Qualcomm Technologies, Inc.
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- Sam Holmes, Qualcomm Technologies, Inc.
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- Jeff Leger, Qualcomm Technologies, Inc.
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- Jan-Harald Fredriksen, ARM
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- Jeff Bolz, NVIDIA
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- Pat Brown, NVIDIA
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- Daniel Rakos, AMD
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- Piers Daniell, NVIDIA
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This extension allows an application to specify areas of the render target
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where the fragment shader may be invoked fewer times.
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These fragments are broadcasted out to multiple pixels to cover the render
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target.
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The primary use of this extension is to reduce workloads in areas where
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lower quality may not be perceived such as the distorted edges of a lens or
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the periphery of a user's gaze.
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=== New Object Types
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None.
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=== New Enum Constants
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* Extending elink:VkAccessFlagBits:
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** ename:VK_ACCESS_FRAGMENT_DENSITY_MAP_READ_BIT_EXT
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* Extending elink:VkFormatFeatureFlagBits:
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** ename:VK_FORMAT_FEATURE_FRAGMENT_DENSITY_MAP_BIT_EXT
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* Extending elink:VkImageCreateFlagBits:
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** ename:VK_IMAGE_CREATE_SUBSAMPLED_BIT_EXT
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* Extending elink:VkImageLayout:
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** ename:VK_IMAGE_LAYOUT_FRAGMENT_DENSITY_MAP_OPTIMAL_EXT
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* Extending elink:VkImageUsageFlagBits:
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** ename:VK_IMAGE_USAGE_FRAGMENT_DENSITY_MAP_BIT_EXT
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* Extending elink:VkImageViewCreateFlagBits:
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** ename:VK_IMAGE_VIEW_CREATE_FRAGMENT_DENSITY_MAP_DYNAMIC_BIT_EXT
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* Extending elink:VkPipelineStageFlagBits:
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** ename:VK_PIPELINE_STAGE_FRAGMENT_DENSITY_PROCESS_BIT_EXT
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* Extending elink:VkSamplerCreateFlagBits:
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** ename:VK_SAMPLER_CREATE_SUBSAMPLED_BIT_EXT
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** ename:VK_SAMPLER_CREATE_SUBSAMPLED_COARSE_RECONSTRUCTION_BIT_EXT
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* Extending elink:VkStructureType:
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** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_DENSITY_MAP_FEATURES_EXT
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** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_DENSITY_MAP_PROPERTIES_EXT
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** ename:VK_STRUCTURE_TYPE_RENDER_PASS_FRAGMENT_DENSITY_MAP_CREATE_INFO_EXT
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=== New Enums
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None.
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=== New Structures
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* slink:VkPhysicalDeviceFragmentDensityMapFeaturesEXT
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* slink:VkPhysicalDeviceFragmentDensityMapPropertiesEXT
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* slink:VkRenderPassFragmentDensityMapCreateInfoEXT
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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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* <<interfaces-builtin-variables-fraginvocationcount,code:FragInvocationCountEXT>>
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* <<interfaces-builtin-variables-fragsize,code:FragSizeEXT>>
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=== New Variable Decorations
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None.
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=== New SPIR-V Capabilities
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* <<spirvenv-capabilities-table-fragmentdensity,FragmentDensityEXT>>
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=== Version History
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* Revision 1, 2018-09-25 (Matthew Netsch)
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- Initial version
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