-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Luca Barbieri wrote:
>> But we've been seeing some results which point that the whole color >> buffer swizzling idea might be overrated: it increases memory bandwidth >> usage substantially, > > Why? > It should decrease it due to a lower number of cache misses, thanks to > having a 2D instead of a 1D neighborhood of a pixel in the cache. For scenes with lots of small triangles (each triangle only covers one fragment of a quad) you can get piles and piles of overdraw. It's turning out to be a major problem for hardware implementations as well. See: Fatahalian, K., Boulos, S., Hegarty, J., Akeley, K., Mark, W. R., Moreton, H., and Hanrahan, P. 2010. Reducing shading on GPUs using quad-fragment merging. In ACM SIGGRAPH 2010 Papers (Los Angeles, California, July 26 - 30, 2010). H. Hoppe, Ed. SIGGRAPH '10. ACM, New York, NY, 1-8. http://graphics.stanford.edu/papers/fragmerging/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkx+twkACgkQX1gOwKyEAw8xCwCgk4dLoHhDAvsp505R1GnPbj+m kecAn0XoQ+lPG152VIkpJRWYtiP0hYrU =kVQ4 -----END PGP SIGNATURE----- _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
