# vkCmdSetCoarseSampleOrderNV(3) Manual Page

## Name

vkCmdSetCoarseSampleOrderNV - Set order of coverage samples for coarse fragments dynamically for a command buffer

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## C Specification

To dynamically set the order of coverage samples in fragments larger than one pixel, call:

    // Provided by VK_NV_shading_rate_image
    void vkCmdSetCoarseSampleOrderNV(
        VkCommandBuffer                             commandBuffer,
        VkCoarseSampleOrderTypeNV                   sampleOrderType,
        uint32_t                                    customSampleOrderCount,
        const VkCoarseSampleOrderCustomNV*          pCustomSampleOrders);

## Parameters

- `commandBuffer` is the command buffer into which the command will be recorded.

- `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 VkCoarseSampleOrderCustomNV structures, each structure specifying the coverage sample order for a single combination of fragment area and coverage sample count.

## Description

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`.

This command sets the order of coverage samples for subsequent drawing commands when drawing using shader objects, or when the graphics pipeline is created with `VK_DYNAMIC_STATE_VIEWPORT_COARSE_SAMPLE_ORDER_NV` set in VkPipelineDynamicStateCreateInfo::`pDynamicStates`. Otherwise, this state is specified by the VkPipelineViewportCoarseSampleOrderStateCreateInfoNV values used to create the currently active pipeline.

Valid Usage

- VUID-vkCmdSetCoarseSampleOrderNV-sampleOrderType-02081
  If `sampleOrderType` is not `VK_COARSE_SAMPLE_ORDER_TYPE_CUSTOM_NV`, `customSamplerOrderCount` must be `0`

- VUID-vkCmdSetCoarseSampleOrderNV-pCustomSampleOrders-02235
  The array `pCustomSampleOrders` must not contain two structures with matching values for both the `shadingRate` and `sampleCount` members

Valid Usage (Implicit)

- VUID-vkCmdSetCoarseSampleOrderNV-commandBuffer-parameter
  `commandBuffer` must be a valid VkCommandBuffer handle

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

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

- VUID-vkCmdSetCoarseSampleOrderNV-commandBuffer-recording
  `commandBuffer` must be in the recording state

- VUID-vkCmdSetCoarseSampleOrderNV-commandBuffer-cmdpool
  The `VkCommandPool` that `commandBuffer` was allocated from must support graphics operations

- VUID-vkCmdSetCoarseSampleOrderNV-videocoding
  This command must only be called outside of a video coding scope

Host Synchronization

- Host access to `commandBuffer` must be externally synchronized

- Host access to the `VkCommandPool` that `commandBuffer` was allocated from must be externally synchronized

Command Properties

Command Buffer Levels | Render Pass Scope | Video Coding Scope | Supported Queue Types | Command Type
--- | --- | --- | --- | ---
Primary Secondary | Both | Outside | Graphics | State

## See Also

VK_NV_shading_rate_image, VkCoarseSampleOrderCustomNV, VkCoarseSampleOrderTypeNV, VkCommandBuffer

## 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