Commits on Jan 20, 2020

1. Bug 1609805 - Support a new reftest kind, for verifying rasterizer ac… …

   …curacy. r=nical,Bert
   
   This patch introduces a new reftest (syntax ** or !* in reftest files).
   
   This type of test renders a single input file multiple times, at a range
   of different picture cache tile sizes. It then verifies that each of the
   images matches (or doesn't).
   
   This can be used to verify rasterizer accuracy when drawing primitives
   with different tile sizes and/or dirty rect update strategies.
   
   One of the included tests in this patch fails the accuracy test - the
   intent is to fix this inaccuracy in a follow up patch and then be able to
   mark it pixel exact.
   
   Differential Revision: https://phabricator.services.mozilla.com/D60185
   
   [ghsync] From https://hg.mozilla.org/mozilla-central/rev/918e156c75aa1ac1fbfdd0a81434c68eb9d11f18

   

   gw3583 authored and moz-gfx committed Jan 20, 2020

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