"In addition to the improved performance offered by descriptor heaps and tables, Direct3D 12 also allows resources to be dynamically indexed in shaders, providing unprecedented flexibility and unlocking new rendering techniques. As an example, modern deferred rendering engines typically encode a material or object identifier of some kind to the intermediate g-buffer. In Direct3D 11, these engines must be careful to avoid using too many materials, as including too many in one g-buffer can significantly slow down the final render pass. With dynamically indexable resources, a scene with a thousand materials can be finalized just as quickly as one with only ten."

link

Does this means we will be able to bind lots of textures to a shader and than based on a drawable material (cb variable) pick the correct texture (index to texture) ?

Say I have a 2d game and I managed to put all my images on only 3 texture atlas, can I bind the 3 textures and never worry about textures again, as my sprites material will have an index to texture, being able to draw everything w/ a single draw call.

Did I get it all wrong?

Thats awesome.

Doesn't that mean if we stuff all vertices and indices into single buffer (along with texture indexes) theoretically it'll be possible to render whole scene in a single draw call (assuming everything uses same shader)?

I have a gtx 260m, a d3d10 card, so D3D11 is used with d3d10 feature level. Will feature levels still apply with D3D12? Or Im pretty much screwed?

"DirectX 12 (and D3D 12) are backwards compatible with virtually every single GPU from the GTX 400 to the present day."link

So, d3d10 is about to be dropped together with windows xp?