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Dominik Röttsches 09961b554d [COLRv1] Fix blending and compositing 
An additional layer is required to composite correctly. PaintComposite
blends/composites between source and destination. The result is
then drawn on top of previous paint results. Previously, the source
layer was just drawn atop previous paints, then the destination
layer was composited down with composite mode, which was incorrect.

More details in [1].

Add tests for composite modes, compare [2]

[1] https://github.com/googlefonts/nanoemoji/issues/332
[2] https://github.com/googlefonts/color-fonts/pull/73

Cq-Include-Trybots: luci.skia.skia.primary:Test-Android-Clang-GalaxyS6-GPU-MaliT760-arm64-Release-All-Android_NativeFonts,FM-Debian10-Clang-GCE-CPU-AVX2-x86_64-Release-All-MSAN
Bug: skia:12424
Change-Id: I8ff69022ec09758af7021756b0fb26443216fcca
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/445936
Commit-Queue: Dominik Röttsches <drott@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
2021-09-07 15:09:58 +00:00
animations first cut at a checkbox 2009-10-21 19:41:10 +00:00
bazel bazel baby steps 2020-09-14 15:18:32 +00:00
bench Fix nanobench perf bug with large --ms values 2021-09-03 21:49:45 +00:00
bin Always use python3 to run fetch-sk. 2021-08-31 13:16:22 +00:00
build/fuchsia [fuchsia] Fix fidlc command. 2020-06-10 03:29:24 +00:00
build_overrides fix tint roll - enable tint_build_wgsl_writer 2021-07-01 00:32:40 +00:00
client_utils/android Replace 'typedef xxxxx INHERITED' with 'using INHERITED = xxxx;'. 2020-09-03 03:41:26 +00:00
demos.skia.org Convert internal SkSL to use .eval() 2021-09-03 15:54:54 +00:00
dm Reland "Fix compilation w/ "skia_enable_svg = false" (take 2)" 2021-09-01 17:54:08 +00:00
docker [infra] Update cmake docker image to be Debian 10 2021-07-23 11:21:31 +00:00
docs/examples Reland "Add sRGB 8888 colortype" 2021-08-24 12:56:32 +00:00
example Remove SDL from DEPS (and SDL example that used it) 2021-05-27 21:37:57 +00:00
experimental Reland "Simplify SkRasterClip now that it's only intersect/diff" 2021-08-31 18:16:31 +00:00
fuzz Convert internal SkSL to use .eval() 2021-09-03 15:54:54 +00:00
gm [COLRv1] Fix blending and compositing 2021-09-07 15:09:58 +00:00
gn Fix inliner bug discovered by fuzzer. 2021-09-07 13:29:37 +00:00
include SkSL: Turn DSL parser off again 2021-09-07 14:21:57 +00:00
infra Disable SkSL LoopFloat test on Mac Intel GPUs. 2021-09-07 15:02:10 +00:00
modules fix fontMgr.makeTypefaceFromData type name 2021-09-07 12:16:30 +00:00
platform_tools [JetSki] pass SkPaint into experimental SkText drawText calls 2021-08-26 13:01:51 +00:00
resources [COLRv1] Fix blending and compositing 2021-09-07 15:09:58 +00:00
samplecode Convert internal SkSL to use .eval() 2021-09-03 15:54:54 +00:00
site Update SkSL docs slightly 2021-09-03 19:09:52 +00:00
specs [infra] Port serve.py from Python2 to 3 2021-08-31 15:28:19 +00:00
src [COLRv1] Fix blending and compositing 2021-09-07 15:09:58 +00:00
tests SkSL: Turn DSL parser off again 2021-09-07 14:21:57 +00:00
third_party Roll skcms from c1e907c8f007 to cf7d3f925b87 (1 revision) 2021-09-02 22:51:45 +00:00
tools Convert internal SkSL to use .eval() 2021-09-03 15:54:54 +00:00
.bazelignore bazel baby steps 2020-09-14 15:18:32 +00:00
.clang-format no more bin packing in .clang-format 2021-03-04 17:22:50 +00:00
.clang-tidy Disable ClangTidy namespace comments for short blocks. 2020-08-24 14:01:22 +00:00
.gitignore add mskps/ to .gitignore 2021-07-06 21:04:55 +00:00
.gn Pre-emptive fix for upcoming ANGLE change. 2021-01-08 17:23:52 +00:00
AUTHORS Correct a typo in build_workaround_header.py 2021-07-29 13:06:01 +00:00
BUILD.bazel bazel baby steps 2020-09-14 15:18:32 +00:00
BUILD.gn Remove blend and colorFilter sksl modules 2021-08-31 17:35:19 +00:00
codereview.settings Make uploading to Gerrit the default for Skia 2016-11-09 19:07:56 +00:00
CONTRIBUTING Fix references to https://sites.google.com/site/skiadocs/. 2015-02-03 13:12:54 -02:00
CQ_COMMITTERS Moved committer list to chrome-infra-auth and deleted it from the repo 2015-09-02 13:37:54 -07:00
DEPS Roll Dawn from 2e40f90e8cb9 to ba1feb07bc5f (1 revision) 2021-09-07 04:39:01 +00:00
DIR_METADATA Move metadata in OWNERS files to DIR_METADATA files 2021-02-02 23:41:54 +00:00
go.mod [infra] Update Go deps of infra module 2021-09-02 19:00:17 +00:00
go.sum [infra] Update Go deps of infra module 2021-09-02 19:00:17 +00:00
LICENSE LICENSE file: clean up 2019-11-22 21:59:03 +00:00
OWNERS [infra] Add wildcard OWNERS 2021-08-30 19:19:34 +00:00
PRESUBMIT.py Remove Docs-Preview links from PRESUBMIT.py 2021-09-02 17:53:05 +00:00
public.bzl Separate SkUnicode bazel source sets 2021-08-09 18:23:15 +00:00
README Fix references to https://sites.google.com/site/skiadocs/. 2015-02-03 13:12:54 -02:00
README.chromium Update README.chromium. 2015-06-11 13:19:24 -07:00
RELEASE_NOTES.txt Convert internal SkSL to use .eval() 2021-09-03 15:54:54 +00:00
whitespace.txt Test SkCQ 2021-07-24 21:07:28 +00:00
WORKSPACE.bazel bazel baby steps 2020-09-14 15:18:32 +00:00

README 

Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.

See full details, and build instructions, at https://skia.org.