Question about graphic card & about directx

[Codex]

I think there needs to be some clarification made here ...

There's no real difference between DX10 and DX10.1 in terms of feature sets, and there is certainly no performance gain using DX10.1 over DX10 at all.

DX10.1 was an update in standards not features, DX10.1 made graphic card vendors make some optional components of the DX10 API mandatory in their hardware.

The main standards to be mandatory were:
- 32-bit floating point filtering
- 4xAA sampling and two specific sample patterns.
- Programmable shader output sample masks and multi-sample AA depth read backs.

In terms of DX11, it is just DX10.1 with three additional features made to the API:

DX11 = DX10.1 + Tessellation + Multithreaded rendering + Compute Shaders

People need to remember that DX11 also includes COM objects from the DX7 API such as DXInput calls and the like. What that means is each new "version" of Direct X is not a complete rework of the API, it's merely added features being implemented.

http://msdn.microsoft.com/en-us/libr...=vs.85%29.aspx
http://en.wikipedia.org/wiki/Microso...#Direct3D_10.1