# VkPhysicalDeviceTextureCompressionASTC3DFeaturesEXT(3) Manual Page

## Name

VkPhysicalDeviceTextureCompressionASTC3DFeaturesEXT - Structure describing ASTC 3D features that can be supported by an implementation

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## C Specification

The `VkPhysicalDeviceTextureCompressionASTC3DFeaturesEXT` structure is defined as:

    // Provided by VK_EXT_texture_compression_astc_3d
    typedef struct VkPhysicalDeviceTextureCompressionASTC3DFeaturesEXT {
        VkStructureType    sType;
        void*              pNext;
        VkBool32           textureCompressionASTC_3D;
    } VkPhysicalDeviceTextureCompressionASTC3DFeaturesEXT;

## Members

This structure describes the following feature:

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

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

- `textureCompressionASTC_3D` indicates whether all of the ASTC 3D compressed texture formats are supported. If this feature is enabled, then the VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT, VK_FORMAT_FEATURE_BLIT_SRC_BIT and VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT features must be supported in `optimalTilingFeatures` for the following formats:

  - VK_FORMAT_ASTC_3x3x3_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_3x3x3_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_3x3x3_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_4x3x3_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_4x3x3_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_4x3x3_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_4x4x3_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_4x4x3_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_4x4x3_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_4x4x4_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_4x4x4_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_4x4x4_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_5x4x4_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_5x4x4_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_5x4x4_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_5x5x4_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_5x5x4_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_5x5x4_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_5x5x5_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_5x5x5_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_5x5x5_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_6x5x5_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_6x5x5_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_6x5x5_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_6x6x5_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_6x6x5_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_6x6x5_SFLOAT_BLOCK_EXT

  - VK_FORMAT_ASTC_6x6x6_UNORM_BLOCK_EXT

  - VK_FORMAT_ASTC_6x6x6_SRGB_BLOCK_EXT

  - VK_FORMAT_ASTC_6x6x6_SFLOAT_BLOCK_EXT

## Description

If the `VkPhysicalDeviceTextureCompressionASTC3DFeatures` structure is included in the `pNext` chain of the VkPhysicalDeviceFeatures2 structure passed to vkGetPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. If the application wishes to use a VkDevice with any features described by `VkPhysicalDeviceTextureCompressionASTC3DFeatures`, it must add an instance of the structure, with the desired feature members set to VK_TRUE, to the `pNext` chain of VkDeviceCreateInfo when creating the VkDevice.

Valid Usage (Implicit)

- VUID-VkPhysicalDeviceTextureCompressionASTC3DFeaturesEXT-sType-sType
  `sType` must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_TEXTURE_COMPRESSION_ASTC_3D_FEATURES_EXT

Structure Chaining

Extends the structures

  - VkDeviceCreateInfo

  - VkPhysicalDeviceFeatures2

## See Also

VK_EXT_texture_compression_astc_3d, VkBool32, 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 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0