Fake antialiasing filter

This is a result of new post_filter_antialiasing material.
This filter can be used on hardware or API which don't has D3D10.1 AA features as cheap AA.

0xAA

0xAA fake antialiasing filter

2xAA

4xAA

8xAA

OpenGL 4.0

All Direct3D11 features are in OpenGL 4.0 right now.

* hardware tessellation via ARB_tessellation_shader
* supersample antialiasing via ARB_sample_shading
* dual source blending via ARB_blend_func_extended

And we have same rendering quality under Direct3D11 and OpenGL.
Main OpenGL problem is poor performance:)