# VkPipelineViewportCoarseSampleOrderStateCreateInfoNV(3) Manual Page

## Name

VkPipelineViewportCoarseSampleOrderStateCreateInfoNV - Structure specifying parameters controlling sample order in coarse fragments

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## C Specification

If the `pNext` chain of VkPipelineViewportStateCreateInfo includes a `VkPipelineViewportCoarseSampleOrderStateCreateInfoNV` structure, then that structure includes parameters controlling the order of coverage samples in fragments larger than one pixel.

The `VkPipelineViewportCoarseSampleOrderStateCreateInfoNV` structure is defined as:

    // Provided by VK_NV_shading_rate_image
    typedef struct VkPipelineViewportCoarseSampleOrderStateCreateInfoNV {
        VkStructureType                       sType;
        const void*                           pNext;
        VkCoarseSampleOrderTypeNV             sampleOrderType;
        uint32_t                              customSampleOrderCount;
        const VkCoarseSampleOrderCustomNV*    pCustomSampleOrders;
    } VkPipelineViewportCoarseSampleOrderStateCreateInfoNV;

## Members

- `sType` is a VkStructureType value identifying this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `sampleOrderType` specifies the mechanism used to order coverage samples in fragments larger than one pixel.

- `customSampleOrderCount` specifies the number of custom sample orderings to use when ordering coverage samples.

- `pCustomSampleOrders` is a pointer to an array of `customSampleOrderCount` VkCoarseSampleOrderCustomNV structures, each structure specifying the coverage sample order for a single combination of fragment area and coverage sample count.

## Description

If this structure is not present, `sampleOrderType` is considered to be `VK_COARSE_SAMPLE_ORDER_TYPE_DEFAULT_NV`.

If `sampleOrderType` is `VK_COARSE_SAMPLE_ORDER_TYPE_CUSTOM_NV`, the coverage sample order used for any combination of fragment area and coverage sample count not enumerated in `pCustomSampleOrders` will be identical to that used for `VK_COARSE_SAMPLE_ORDER_TYPE_DEFAULT_NV`.

If the pipeline was created with `VK_DYNAMIC_STATE_VIEWPORT_COARSE_SAMPLE_ORDER_NV`, the contents of this structure (if present) are ignored, and the coverage sample order is instead specified by vkCmdSetCoarseSampleOrderNV.

Valid Usage

- VUID-VkPipelineViewportCoarseSampleOrderStateCreateInfoNV-sampleOrderType-02072
  If `sampleOrderType` is not `VK_COARSE_SAMPLE_ORDER_TYPE_CUSTOM_NV`, `customSamplerOrderCount` must be `0`

- VUID-VkPipelineViewportCoarseSampleOrderStateCreateInfoNV-pCustomSampleOrders-02234
  The array `pCustomSampleOrders` must not contain two structures with matching values for both the `shadingRate` and `sampleCount` members

Valid Usage (Implicit)

- VUID-VkPipelineViewportCoarseSampleOrderStateCreateInfoNV-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_COARSE_SAMPLE_ORDER_STATE_CREATE_INFO_NV`

- VUID-VkPipelineViewportCoarseSampleOrderStateCreateInfoNV-sampleOrderType-parameter
  `sampleOrderType` must be a valid VkCoarseSampleOrderTypeNV value

- VUID-VkPipelineViewportCoarseSampleOrderStateCreateInfoNV-pCustomSampleOrders-parameter
  If `customSampleOrderCount` is not `0`, `pCustomSampleOrders` must be a valid pointer to an array of `customSampleOrderCount` valid VkCoarseSampleOrderCustomNV structures

## See Also

VK_NV_shading_rate_image, VkCoarseSampleOrderCustomNV, VkCoarseSampleOrderTypeNV, VkStructureType

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0