GPU Pro 6

3. Hybrid Reconstruction Antialiasing 121

Figure 3.16. FLIPQUAD provides optimal usage of two samples matching quality of

4× rotated-grid resolve.

Figure 3.17. Left to right: single sample, FLIPQUAD, and quincunx. [Image courtesy

[Akenine 03].]

The implementation of the FLIPQUAD pattern is fairly straightforward using

2×MSAA. The snippets in Listings 3.4 and 3.5 give sampling positions for pixels

within a quad and the reconstruction kernel.

3.6.4 Temporal FLIPQUAD

In Section 3.6.3 we discussed implementing FLIPQUAD sampling and reconstruc-

tion on modern hardware. However, in the context of temporal super-sampling,

we need to adapt our pattern and resolv ...