# VkPhysicalDeviceShadingRateImagePropertiesNV(3) Manual Page

## Name

VkPhysicalDeviceShadingRateImagePropertiesNV - Structure describing shading rate image limits that can be supported by an implementation

## C Specification

The `VkPhysicalDeviceShadingRateImagePropertiesNV` structure is defined as:

    typedef struct VkPhysicalDeviceShadingRateImagePropertiesNV {
        VkStructureType    sType;
        void*              pNext;
        VkExtent2D         shadingRateTexelSize;
        uint32_t           shadingRatePaletteSize;
        uint32_t           shadingRateMaxCoarseSamples;
    } VkPhysicalDeviceShadingRateImagePropertiesNV;

## Members

The members of the `VkPhysicalDeviceShadingRateImagePropertiesNV` structure describe the following implementation-dependent properties related to the shading rate image feature:

## Description

- `sType` is the type of this structure.

- `pNext` is `NULL` or a pointer to an extension-specific structure.

- `shadingRateTexelSize` indicates the width and height of the portion of the framebuffer corresponding to each texel in the shading rate image.

- `shadingRatePaletteSize` indicates the maximum number of palette entries supported for the shading rate image.

- `shadingRateMaxCoarseSamples` specifies the maximum number of coverage samples supported in a single fragment. If the product of the fragment size derived from the base shading rate and the number of coverage samples per pixel exceeds this limit, the final shading rate will be adjusted so that its product does not exceed the limit.

If the `VkPhysicalDeviceShadingRateImagePropertiesNV` structure is included in the `pNext` chain of VkPhysicalDeviceProperties2, it is filled with the implementation-dependent limits.

Valid Usage (Implicit)

- `sType` must be `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADING_RATE_IMAGE_PROPERTIES_NV`

## See Also

VkExtent2D, 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 (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.