VkBufferCollectionPropertiesFUCHSIA

The VkBufferCollectionPropertiesFUCHSIA structure is defined as:

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 a VkStructureType value identifying 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 structure specifying the component mapping
• suggestedYcbcrModel is a VkSamplerYcbcrModelConversion value specifying the suggested Y′C_BC_R model
• suggestedYcbcrRange is a VkSamplerYcbcrRange value specifying the suggested Y′C_BC_R 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).