C Specification

The VkBufferCollectionPropertiesFUCHSIA structure is defined as:

// Provided by VK_FUCHSIA_buffer_collection
typedef struct VkBufferCollectionPropertiesFUCHSIA {
    VkStructureType                  sType;
    void*                            pNext;
    uint32_t                         memoryTypeBits;
    uint32_t                         bufferCount;
    uint32_t                         createInfoIndex;
    uint64_t                         sysmemPixelFormat;
    VkFormatFeatureFlags             formatFeatures;
    VkSysmemColorSpaceFUCHSIA        sysmemColorSpaceIndex;
    VkComponentMapping               samplerYcbcrConversionComponents;
    VkSamplerYcbcrModelConversion    suggestedYcbcrModel;
    VkSamplerYcbcrRange              suggestedYcbcrRange;
    VkChromaLocation                 suggestedXChromaOffset;
    VkChromaLocation                 suggestedYChromaOffset;
} VkBufferCollectionPropertiesFUCHSIA;


  • sType is the type of this structure

  • pNext is NULL or a pointer to a structure extending this structure

  • memoryTypeBits is a bitmask containing one bit set for every memory type which the buffer collection can be imported as buffer collection

  • bufferCount is the number of buffers in the collection

  • createInfoIndex as described in Sysmem chosen create infos

  • sysmemPixelFormat is the Sysmem PixelFormatType as defined in fuchsia.sysmem/image_formats.fidl

  • formatFeatures is a bitmask of VkFormatFeatureFlagBits shared by the buffer collection

  • sysmemColorSpaceIndex is a VkSysmemColorSpaceFUCHSIA struct specifying the color space

  • samplerYcbcrConversionComponents is a VkComponentMapping struct specifying the component mapping

  • suggestedYcbcrModel is a VkSamplerYcbcrModelConversion value specifying the suggested Y′CBCR model

  • suggestedYcbcrRange is a VkSamplerYcbcrRange value specifying the suggested Y′CBCR range

  • suggestedXChromaOffset is a VkChromaLocation value specifying the suggested X chroma offset

  • suggestedYChromaOffset is a VkChromaLocation value specifying the suggested Y chroma offset


sysmemColorSpace is only set for image-based buffer collections where the constraints were specified using VkImageConstraintsInfoFUCHSIA in a call to vkSetBufferCollectionImageConstraintsFUCHSIA.

For image-based buffer collections, createInfoIndex will identify both the VkImageConstraintsInfoFUCHSIA::pImageCreateInfos element and the VkImageConstraintsInfoFUCHSIA::pFormatConstraints element chosen by Sysmem when vkSetBufferCollectionImageConstraintsFUCHSIA was called. The value of sysmemColorSpaceIndex will be an index to one of the color spaces provided in the VkImageFormatConstraintsInfoFUCHSIA::pColorSpaces array.

The implementation must have formatFeatures with all bits set that were set in VkImageFormatConstraintsInfoFUCHSIA::requiredFormatFeatures, by the call to vkSetBufferCollectionImageConstraintsFUCHSIA, at createInfoIndex (other bits could be set as well).

Valid Usage (Implicit)
  • VUID-VkBufferCollectionPropertiesFUCHSIA-sType-sType

  • VUID-VkBufferCollectionPropertiesFUCHSIA-pNext-pNext
    pNext must be NULL

  • VUID-VkBufferCollectionPropertiesFUCHSIA-formatFeatures-parameter
    formatFeatures must be a valid combination of VkFormatFeatureFlagBits values

  • VUID-VkBufferCollectionPropertiesFUCHSIA-formatFeatures-requiredbitmask
    formatFeatures must not be 0

  • VUID-VkBufferCollectionPropertiesFUCHSIA-sysmemColorSpaceIndex-parameter
    sysmemColorSpaceIndex must be a valid VkSysmemColorSpaceFUCHSIA structure

  • VUID-VkBufferCollectionPropertiesFUCHSIA-samplerYcbcrConversionComponents-parameter
    samplerYcbcrConversionComponents must be a valid VkComponentMapping structure

  • VUID-VkBufferCollectionPropertiesFUCHSIA-suggestedYcbcrModel-parameter
    suggestedYcbcrModel must be a valid VkSamplerYcbcrModelConversion value

  • VUID-VkBufferCollectionPropertiesFUCHSIA-suggestedYcbcrRange-parameter
    suggestedYcbcrRange must be a valid VkSamplerYcbcrRange value

  • VUID-VkBufferCollectionPropertiesFUCHSIA-suggestedXChromaOffset-parameter
    suggestedXChromaOffset must be a valid VkChromaLocation value

  • VUID-VkBufferCollectionPropertiesFUCHSIA-suggestedYChromaOffset-parameter
    suggestedYChromaOffset must be a valid VkChromaLocation value

See Also

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 2014-2021 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0