Constant vulkanalia::vk::KHR_SAMPLER_YCBCR_CONVERSION_EXTENSION

pub const KHR_SAMPLER_YCBCR_CONVERSION_EXTENSION: [i8; 256];

https://www.khronos.org/registry/vulkan/specs/1.2-extensions/man/html/VK_KHR_sampler_ycbcr_conversion.html