mirror of
https://github.com/status-im/Vulkan-Docs.git
synced 2025-02-25 12:35:11 +00:00
40ba6e9a44
* Update release number to 108.
Internal Issues:
* Clarify that only external resources can be bound to external memory in
valid usage statements for flink:vkBindBufferMemory,
flink:vkBindImageMemory, slink:VkSparseMemoryBind, and
slink:VkSparseImageMemoryBind (internal issue 1496).
* Move all `vk.xml`requirements for
flink:vkGetDeviceGroupSurfacePresentModes2EXT into
`<<VK_EXT_full_screen_exclusive>>` (internal issue 1622).
* Add some missing valid usage statements for
flink:vkCmdEndQueryIndexedEXT (internal issue 1638).
* Specify rules for defining "`New Flags and Bitmask Types`" in that
section of the style guide (internal issue 1649).
* Add a comment to the `vk.xml` extension block for
`VK_ANDROID_native_buffer` explaining why the extension is tagged
`"disabled"` (internal issue 1657).
* Fix typos in the description of slink:VkImageViewCreateInfo (internal
issue 1661).
* Modify valid usage statements for slink:VkImageViewCreateInfo to fix the
description about the restriction for pname:baseArrayLayer and
pname:layerCount from pname:extent.depth to the depth of mipmap level
while creating a 2D array image view on a 3D image.
* Forbid structures that contain opaque types (images or samplers) in the
SPIR-V <<spirvenv-module-validation, Validation Rules within a Module>>
section.
* Minor editorial changes for the `VK_EXT_swapchain_colorspace` extension
in the description of slink:VkColorSpace KHR and `vk.xml`, including:
** Consistently specify which function (OETF or Inverse-EOTF) is being
defined;
** Remove the Display P3 EOTF, since no other EOTFs are defined;
** Include luminance range for the HLG OETF;
** Remove a duplicated paragraph; and,
** Rename ename:VK_COLOR_SPACE_DISPLAY_P3_LINEAR_EXT, leaving the old
ename:VK_COLOR_SPACE_DCI_P3_LINEAR_EXT token as an alias.
New Extensions:
* `<<VK_NV_framebuffer_mixed_samples_coverage_reduction_mode>>`
* `<<VK_KHR_uniform_buffer_standard_layout>>`
74 lines
2.4 KiB
Plaintext
74 lines
2.4 KiB
Plaintext
include::meta/VK_NV_coverage_reduction_mode.txt[]
|
||
|
||
*Last Modified Date*::
|
||
2019-01-29
|
||
*Contributors*::
|
||
- Kedarnath Thangudu, NVIDIA
|
||
- Jeff Bolz, NVIDIA
|
||
|
||
When using a framebuffer with mixed samples, a per-fragment coverage
|
||
reduction operation is performed which generates a color sample mask from
|
||
the coverage mask.
|
||
This extension defines the following modes to control how this reduction is
|
||
performed.
|
||
|
||
* Merge: When there are more raster samples than color samples, there is
|
||
an implementation dependent association of each raster sample to a color
|
||
sample.
|
||
In the merge mode, the reduced color sample mask is computed such that
|
||
the bit for each color sample is 1 if any of the associated bits in the
|
||
fragment’s coverage is on, and 0 otherwise.
|
||
This is the default mode.
|
||
|
||
* Truncate: When there are more raster samples (N) than color samples(M),
|
||
there is one to one association of the first M raster samples to the M
|
||
color samples and the coverage bits for the other raster samples are
|
||
ignored.
|
||
|
||
When the number of raster samples is equal to the color samples, there is a
|
||
one to one mapping between them in either of the above modes.
|
||
|
||
The new command
|
||
flink:vkGetPhysicalDeviceSupportedFramebufferMixedSamplesCombinationsNV can
|
||
be used to query the various raster, color, depth/stencil sample count and
|
||
reduction mode combinations that are supported by the implementation.
|
||
This extension would allow an implementation to support the behavior of both
|
||
`VK_NV_framebuffer_mixed_samples` and `VK_AMD_mixed_attachment_samples`
|
||
extensions simultaneously.
|
||
|
||
|
||
=== New Object Types
|
||
|
||
None.
|
||
|
||
=== New Enum Constants
|
||
|
||
* Extending elink:VkStructureType
|
||
** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COVERAGE_REDUCTION_MODE_FEATURES_NV
|
||
** ename:VK_STRUCTURE_TYPE_PIPELINE_COVERAGE_REDUCTION_STATE_CREATE_INFO_NV
|
||
** ename:VK_STRUCTURE_TYPE_FRAMEBUFFER_MIXED_SAMPLES_COMBINATION_NV
|
||
|
||
=== New Enums
|
||
|
||
* elink:VkCoverageReductionModeNV
|
||
* tlink:VkPipelineCoverageReductionStateCreateFlagsNV
|
||
|
||
=== New Structures
|
||
|
||
* slink:VkPhysicalDeviceCoverageReductionModeFeaturesNV
|
||
* slink:VkPipelineCoverageReductionStateCreateInfoNV
|
||
* slink:VkFramebufferMixedSamplesCombinationNV
|
||
|
||
=== New Functions
|
||
|
||
* flink:vkGetPhysicalDeviceSupportedFramebufferMixedSamplesCombinationsNV
|
||
|
||
=== Issues
|
||
|
||
None.
|
||
|
||
=== Version History
|
||
|
||
* Revision 1, 2019-01-29 (Kedarnath Thangudu)
|
||
- Internal revisions
|