VK-GL-CTS | Khronos Vulkan , OpenGL , and OpenGL ES Conformance Tests | 3D Animation library

I've been trying to sample a YCbCr image in Vulkan for 16+ hours now, but I keep getting incorrect results, and I was hoping someone might be able to spot my mistake.

I have a NV12 YCbCr image which I want to render onto two triangles forming a quad. If i understand correctly, the VkFormat that corresponds to NV12 is VK_FORMAT_G8_B8R8_2PLANE_420_UNORM. Below is the code that I would expect to work, but I'll try to explain what I'm trying to do as well:

1) Create a VkSampler with a VkSamplerYcbcrConversion (with the correct format) in pNext

2) Read NV12 data into staging buffer

3) Create VkImage with the correct format and specify that the planes are disjoint

4) Get memory requirements (and offset for plane 1) for each plane (0 and 1)

5) Allocate device local memory for the image data

6) Bind each plane to the correct location in memory

7) Copy staging buffer to image memory

8) Create VkImageView with the same format as the VkImage and the same VkSamplerYcbcrConversionInfo as the VkSampler in pNext.