Akeley, KurtSu, JonathanMarc Olano and Philipp Slusallek2013-10-282013-10-2820063-905673-37-11727-3471https://doi.org/10.2312/EGGH/EGGH06/027-030We show that, and how, window coordinate precision (the representations of xwin and ywin), field of view, and error accumulated by single-precision mapping arithmetic contribute to, and sometimes dominate, effective zbuffer resolution. Our results are developed analytically, then verified through simulation. Using our approach system designers can allocate numeric precision more efficiently, and programmers can more confidently predict the minimum triangle-to-triangle separation required to ensure correct z-buffer occlusion.Categories and Subject Descriptors (according to ACM CCS): I.3.1 [Computer Graphics]: Graphics Processors