ES31 Status on Direct3D 11

New Features	Status	Limitations
Arrays of arrays (shading language only)	Fully implemented	None
Compute shaders	Fully implemented	None
Explicit uniform location	Fully implemented	None
Framebuffers with no attachments	Fully implemented	None
Indirect draw commands	Fully implemented	None
Multisample formats for immutable textures	Fully implemented	None
Program interface queries	Fully implemented	None
Shader bitfield operations (shading language only)	Fully implemented	None
Shader layout binding (shading language only)	Fully implemented	None
Texture gather operations	Fully implemented	None
Vertex attribute binding	Fully implemented	None
Atomic counters	Implemented with limitations	Atomic counters in non-compute shaders are not implemented yet.
Shader image load/store operations	Implemented with limitations	See notes [1] below
Shader storage buffer objects	Implemented with limitations	See notes [2] below
Shader helper invocation (shading language only)	Hard to implement	The equivalent of gl_HelperInvocation is WaveIsHelperLane which requres SM6.
Separate shader objects	Unimplemented	It can be implemented with medium complexity.
Stencil texturing	Unimplemented	It can be implemented with medium complexity. Refer here.

Images in non-compute shaders are not implemented yet.
Multiple image variables are not allowed to be bound to the same image unit which refers to the same layer and level of a texture image. It means image aliasing is not supported.
The same layer and level of a texture are not allowed to be bound to multiple image units.
When a texture is bound to an image unit, the image unit format must exactly match the texture internal format. Similarly, the format layout qualifier for an image variable must exactly match the format of the image unit. Re-interpretation is not supported. See here.

Shader storage blocks in non-compute shaders are not implemented yet.
Multiple shader storage blocks are not allowed to be bound to the same buffer. See here.