tree 336c6ca241497181743671e2f6e1af4405ab0237
parent e6a408ed31a7d1fb8ace6b80487d179b2f085fd3
author Chris Craik <ccraik@google.com> 1384912846 -0800
committer Chris Craik <ccraik@google.com> 1385148972 -0800

Clean up quick rejection, especially surrounding points + lines.

bug:4351353

quickReject and quickRejectNoScissor have been renamed and refactored:
- to make the scissor side effect clear and explicit
- dangerous methods no longer public
- to make the simple quick reject check logic const
- simple quick reject is now conservative

This CL also fixes several issues with line and point quickRejection -
sub-pixel and hairline lines are much less likely to be incorrectly
rejected, especially at small canvas scale.

Additionally, alpha modulation for AA points < 1px in size is now
correct, dumplicating SW behavior (similar to lines and stroked
shapes work).

Change-Id: Ibb0710c721b9fb415d05acf54dd3d2b4d602156a