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-rwxr-xr-xtest/update-refs.sh84
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-#!/bin/bash
-
-# This script can be used to update the reference images using certain
-# test results as a baseline.
-#
-# Our test suite expects nearly pixel-perfection, but in some cases we
-# give the renderer some flexibility and so these cases will show up as
-# test failures. So, this script can be used to do a visual check and
-# if they "look" ok, to go ahead and update the reference image by
-# copying the test output.
-#
-# NOTE: When adding to this file, make sure to thoroughly document the
-# rationale when and why the existing reference images can be updated
-# from regular test output, such that people other than you can
-# intelligently keep the test reference images updated.
-
-if [ ! -d output ] || [ ! -d reference ]; then
- echo "This script must be run in cairo's test directory after the full testsuite has been run."
- exit
-fi
-
-PDIFF="./pdiff/perceptualdiff"
-
-# Returns 1 if images are different, 0 if they're essentially identical
-images_differ() {
- # Check if bytewise identical
- if cmp --silent "${1}" "${2}"; then
- # Images are identical
- return 0
- fi
-
- # Run perceptualdiff with minimum threshold
- pdiff_output=$($PDIFF "${1}" "${2}" -threshold 1)
- result=${pdiff_output%:*}
- notes=$(echo "${pdiff_output#*: }" | tail -n 1)
- if [ "$result" = "PASS" ] && [ "$notes" = "Images are binary identical" ]; then
- return 0
- fi
-
- return 1
-}
-
-# ----------------------------------------------------------------------
-# pixman-downscale images
-#
-# The *-95 tests check rendering at a difficult to downsize dimension.
-# The border pixels between different colored areas can be blurred in
-# different ways resulting in some color variation that is acceptable
-# but throws off the testsuite. So a visual check is sufficient to
-# verify the results aren't crazily off.
-
-# Use the ARGB32 format of the image file as the main reference
-for file in $(ls ./output/pixman-downscale-*-95.image.argb32.out.png); do
- dest=$(basename ${file/.image.argb32.out./.ref.})
- echo "$file -> ./reference/${dest}"
- cp $file ./reference/${dest}
-done
-echo
-
-# If the ARGB32 format of a given backend's file differs from the main reference,
-# then use it as the backend reference
-for file in $(ls ./output/pixman-downscale-*-95.*.argb32.out.png); do
- ref=$(basename ${file/-95.*.argb32.out.png/-95.ref.png})
- if ! images_differ "./reference/${ref}" "${file}"; then
- dest=$(basename ${file/.argb32.out.png/.ref.png})
- echo "${file} -> ./reference/${dest}"
- cp ${file} ./reference/${dest}
- fi
-done
-echo
-
-# If the RGB24 format differs from existing ref image, then use it as a ref.
-for file in $(ls ./output/pixman-downscale-*-95.*.rgb24.out.png); do
- ref=$(basename ${file/.rgb24.out.png/.ref.png})
- if [ ! -e "./reference/${ref}" ]; then
- ref=$(basename ${file/-95.*.rgb24.out.png/-95.ref.png})
- fi
-
- if ! images_differ "./reference/${ref}" "${file}"; then
- dest=$(basename ${file/.rgb24.out.png/.rgb24.ref.png})
- echo "${file} -> ./reference/${dest}"
- cp ${file} ./reference/${dest}
- fi
-done