The y-cb-cr-vulkan-samplers feature allows specification of VkSamplerYcbcrConversionCreateInfo as part of the static vulkan sampler descriptor. For this purpose, clients can supply YCbCrVkDescriptor instances when creating samplers and texture views. Clients can also obtain the YCbCr info for a SharedTextureMemory instance that was created from an AHardwareBuffer by querying its properties. Most properties will be created directly from the corresponding buffer format properties on the underlying AHardwareBuffer. The two exceptions are as follows:
vkChromaFilter: Will be set to FilterMode::Linear iff VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_LINEAR_FILTER_BIT is present in the AHB format features and FilterMode::Nearest otherwiseforceExplicitReconstruction: will be set to true iff VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_BIT is present in the AHB format features TODO(crbug.com/dawn/2476): Expand this documentation with examples and description of semantics (including constraints/validations) as we build out support