# Reftests for downscaling
#
# Downscaling can be a lossy process, so a bit of mismatch is acceptable here,
# as long as it's barely noticable visually. When necessary, this can be
# explicitly allowed via 'fuzzy'/'fuzzy-if' annotations.
#
# Many of these tests check primarily that we don't lose rows or columns of
# pixels when downscaling by making sure that the result isn't too similar to
# about:blank. A small amount of fuzziness is used to ensure that the tests
# don't pass because of very slight deviations; passing tests should be
# substantially different from about:blank. This fuzziness should *not* be
# removed as doing so would make the tests pass in situations where they
# shouldn't.
#
# IMPORTANT: For robustness, each test should be listed *twice* in this
# manifest -- once with the high quality downscaling pref disabled, and once
# with this pref enabled. The pref is set via "default-preferences", so
# simply appending a new test to the lists below each of those lines should be
# sufficient.
#
# Also note that Mac OS X has its own system-level downscaling algorithm, so
# tests here may need Mac-specific "fuzzy-if(cocoaWidget,...)" annotations.
# Similarly, modern versions of Windows have slightly different downscaling
# behavior than other platforms, and may require "fuzzy-if(winWidget,...)".


# RUN TESTS NOT AFFECTED BY HIGH QUALITY DOWNSCALING:
# ===================================================
== downscale-svg-1a.html downscale-svg-1-ref.html?80
fuzzy(80,468) == downscale-svg-1b.html downscale-svg-1-ref.html?72
== downscale-svg-1c.html downscale-svg-1-ref.html?64
fuzzy(17,208) fuzzy-if(B2G,255,207) == downscale-svg-1d.html downscale-svg-1-ref.html?53 # right side is 1 pixel off for B2G, probably regression from 974242
fuzzy(78,216) == downscale-svg-1e.html downscale-svg-1-ref.html?40
fuzzy(51,90) == downscale-svg-1f.html downscale-svg-1-ref.html?24

# RUN TESTS WITH HIGH QUALITY DOWNSCALING DISABLED:
# =================================================
default-preferences pref(image.high_quality_downscaling.enabled,false)

fuzzy-if(winWidget,16,20) fuzzy-if(cocoaWidget,106,31) == downscale-1.html downscale-1-ref.html

fuzzy(20,999) != downscale-2a.html?203,52,left about:blank
fuzzy(20,999) != downscale-2b.html?203,52,left about:blank
fuzzy(20,999) != downscale-2c.html?203,52,left about:blank
fuzzy(20,999) != downscale-2d.html?203,52,left about:blank
fuzzy(20,999) != downscale-2e.html?203,52,left about:blank

fuzzy(20,999) != downscale-2a.html?205,53,left about:blank
fuzzy(20,999) != downscale-2b.html?205,53,left about:blank
fuzzy(20,999) != downscale-2c.html?205,53,left about:blank
fuzzy(20,999) != downscale-2d.html?205,53,left about:blank
fuzzy(20,999) != downscale-2e.html?205,53,left about:blank

fuzzy(20,999) != downscale-2a.html?203,52,right about:blank
fuzzy(20,999) != downscale-2b.html?203,52,right about:blank
fuzzy(20,999) != downscale-2c.html?203,52,right about:blank
fuzzy(20,999) != downscale-2d.html?203,52,right about:blank
fuzzy(20,999) != downscale-2e.html?203,52,right about:blank

fuzzy(20,999) != downscale-2a.html?205,53,right about:blank
fuzzy(20,999) != downscale-2b.html?205,53,right about:blank
fuzzy(20,999) != downscale-2c.html?205,53,right about:blank
fuzzy(20,999) != downscale-2d.html?205,53,right about:blank
fuzzy(20,999) != downscale-2e.html?205,53,right about:blank

fuzzy(20,999) != downscale-2a.html?203,52,top about:blank
fuzzy(20,999) != downscale-2b.html?203,52,top about:blank
fuzzy(20,999) != downscale-2c.html?203,52,top about:blank
fuzzy(20,999) != downscale-2d.html?203,52,top about:blank
fuzzy(20,999) != downscale-2e.html?203,52,top about:blank

fuzzy(20,999) != downscale-2a.html?205,53,top about:blank
fuzzy(20,999) != downscale-2b.html?205,53,top about:blank
fuzzy(20,999) != downscale-2c.html?205,53,top about:blank
fuzzy(20,999) != downscale-2d.html?205,53,top about:blank
fuzzy(20,999) != downscale-2e.html?205,53,top about:blank

fuzzy(20,999) != downscale-2a.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2b.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2c.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2d.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2e.html?203,52,bottom about:blank

fuzzy(20,999) != downscale-2a.html?205,53,bottom about:blank
fuzzy(20,999) != downscale-2b.html?205,53,bottom about:blank
fuzzy(20,999) != downscale-2c.html?205,53,bottom about:blank
fuzzy(20,999) != downscale-2d.html?205,53,bottom about:blank
fuzzy(20,999) fails-if(OSX>=1008) != downscale-2e.html?205,53,bottom about:blank

# RUN TESTS WITH HIGH QUALITY DOWNSCALING ENABLED:
# ================================================
# High-quality downscaling enabled:
default-preferences pref(image.high_quality_downscaling.enabled,true)

fuzzy(31,127) fuzzy-if(d2d,31,147) == downscale-1.html downscale-1-ref.html # intermittently 147 pixels on win7 accelerated only (not win8)

fuzzy(20,999) != downscale-2a.html?203,52,left about:blank
fuzzy(20,999) != downscale-2b.html?203,52,left about:blank
fuzzy(20,999) != downscale-2c.html?203,52,left about:blank
fuzzy(20,999) != downscale-2d.html?203,52,left about:blank
fuzzy(20,999) != downscale-2e.html?203,52,left about:blank
fuzzy(20,999) != downscale-2f.html?203,52,left about:blank

fuzzy(20,999) != downscale-2a.html?205,53,left about:blank
fuzzy(20,999) != downscale-2b.html?205,53,left about:blank
fuzzy(20,999) != downscale-2c.html?205,53,left about:blank
fuzzy(20,999) != downscale-2d.html?205,53,left about:blank
fuzzy(20,999) != downscale-2e.html?205,53,left about:blank
fuzzy(20,999) != downscale-2f.html?205,53,left about:blank

fuzzy(20,999) != downscale-2a.html?203,52,right about:blank
fuzzy(20,999) != downscale-2b.html?203,52,right about:blank
fuzzy(20,999) != downscale-2c.html?203,52,right about:blank
fuzzy(20,999) != downscale-2d.html?203,52,right about:blank
fuzzy(20,999) != downscale-2e.html?203,52,right about:blank
fuzzy(20,999) != downscale-2f.html?203,52,right about:blank

fuzzy(20,999) != downscale-2a.html?205,53,right about:blank
fuzzy(20,999) != downscale-2b.html?205,53,right about:blank
fuzzy(20,999) != downscale-2c.html?205,53,right about:blank
fuzzy(20,999) != downscale-2d.html?205,53,right about:blank
fuzzy(20,999) != downscale-2e.html?205,53,right about:blank
fuzzy(20,999) != downscale-2f.html?205,53,right about:blank

fuzzy(20,999) != downscale-2a.html?203,52,top about:blank
fuzzy(20,999) != downscale-2b.html?203,52,top about:blank
fuzzy(20,999) != downscale-2c.html?203,52,top about:blank
fuzzy(20,999) != downscale-2d.html?203,52,top about:blank
fuzzy(20,999) != downscale-2e.html?203,52,top about:blank
fuzzy(20,999) != downscale-2f.html?203,52,top about:blank

fuzzy(20,999) != downscale-2a.html?205,53,top about:blank
fuzzy(20,999) != downscale-2b.html?205,53,top about:blank
fuzzy(20,999) != downscale-2c.html?205,53,top about:blank
fuzzy(20,999) != downscale-2d.html?205,53,top about:blank
fuzzy(20,999) != downscale-2e.html?205,53,top about:blank
fuzzy(20,999) != downscale-2f.html?205,53,top about:blank

fuzzy(20,999) != downscale-2a.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2b.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2c.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2d.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2e.html?203,52,bottom about:blank
fuzzy(20,999) != downscale-2f.html?203,52,bottom about:blank

fuzzy(20,999) != downscale-2a.html?205,53,bottom about:blank
fuzzy(20,999) != downscale-2b.html?205,53,bottom about:blank
fuzzy(20,999) != downscale-2c.html?205,53,bottom about:blank
fuzzy(20,999) != downscale-2d.html?205,53,bottom about:blank
fuzzy(20,999) != downscale-2e.html?205,53,bottom about:blank
fuzzy(20,999) != downscale-2f.html?205,53,bottom about:blank