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Tyler Denniston 573923c30c Add specialized impl of Wang's formula for cubic rationals 
Initial data suggests that the non-rational Wang's formula does not
form an upper bound for the rational case, so additional work is needed
to handle them. Note this new formula is not actually due to Wang,
but is an analogue.

The version added in this CL is for cubic rationals because the current
tessellation code promotes all curve segments to cubic rationals for
ease. If we end up using this approach, it would be likely simpler and
faster to implement the degree-2 version and handle conics separately
during tessellation.

From:
J. Zheng, T. Sederberg. "Estimating Tessellation Parameter Intervals for
Rational Curves and Surfaces." ACM Transactions on Graphics 19(1). 2000.

Bug: skia:10419
Change-Id: Ie02e229c089541ece05c7502217b1ef5d4799b52
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337720
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Chris Dalton <csmartdalton@google.com>
2020-12-10 17:26:08 +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 Implement stroke tessellation with indirect draws 2020-12-10 00:25:17 +00:00
bin bin/try: automatically set 'git cl issue' when not found 2020-06-25 17:44:01 +00:00
build/fuchsia [fuchsia] Fix fidlc command. 2020-06-10 03:29:24 +00:00
build_overrides Port to ANGLE's GN files 2020-09-11 15:22:34 +00:00
client_utils/android Replace 'typedef xxxxx INHERITED' with 'using INHERITED = xxxx;'. 2020-09-03 03:41:26 +00:00
demos.skia.org [canvaskit] Remove Sk from nearly all function/type names. 2020-10-07 21:01:32 +00:00
dm Reland "SkAndroidCodec: Support decoding all frames" 2020-11-16 16:55:48 +00:00
docker [canvaskit,pathkit] Update to emsdk 2.0 2020-08-20 14:55:50 +00:00
docs/examples Use explicit sampling param 2020-12-10 14:01:58 +00:00
example Reland "Remove use of legacy display globals." 2020-10-05 19:13:58 +00:00
experimental handle different bounds for every frame 2020-12-07 20:52:10 +00:00
fuzz Add flag to hide non-sampling imageshader factories 2020-12-08 20:33:23 +00:00
gm Use explicit sampling param 2020-12-10 14:01:58 +00:00
gn Fix blending bug in animated webp decodes 2020-12-10 16:24:08 +00:00
include Add a stencil test for transparent tessellated strokes 2020-12-10 17:12:38 +00:00
infra Revert "Reland "[infra] Switch from isolate to RBE-CAS"" 2020-12-09 18:09:39 +00:00
modules [skottie] Add text colorization GM 2020-12-10 17:10:48 +00:00
platform_tools clean playback methods and constructors in SkottieView 2020-12-10 16:29:38 +00:00
resources [skottie] Add text colorization GM 2020-12-10 17:10:48 +00:00
samplecode Add flag to hide non-sampling imageshader factories 2020-12-08 20:33:23 +00:00
site Update docs for iOS deployment 2020-11-19 14:50:28 +00:00
specs Fix CanvasKit generated documentation to work with emscripten 1.39.16. 2020-05-27 12:23:32 +00:00
src Remove ftransform intrinsic from SkSL. 2020-12-10 17:23:38 +00:00
tests Add specialized impl of Wang's formula for cubic rationals 2020-12-10 17:26:08 +00:00
third_party System harfbuzz also means harfbuzz-icu. 2020-12-08 16:17:42 +00:00
tools Use explicit sampling param 2020-12-10 14:01:58 +00:00
.bazelignore bazel baby steps 2020-09-14 15:18:32 +00:00
.clang-format Disable BinPackParameters in .clang-format 2020-03-27 14:32:40 +00:00
.clang-tidy Disable ClangTidy namespace comments for short blocks. 2020-08-24 14:01:22 +00:00
.gitignore bazel baby steps 2020-09-14 15:18:32 +00:00
.gn Basic standalone GN configs. 2016-07-21 12:25:45 -07:00
AUTHORS Fix issues with latest GN 2020-11-07 13:55:45 +00:00
BUILD.bazel bazel baby steps 2020-09-14 15:18:32 +00:00
BUILD.gn Fix GN dirty checking for SPIR-V test files. 2020-12-08 20:46:53 +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 ANGLE from 27e52ca05dc7 to 067a12f05951 (10 revisions) 2020-12-10 04:58:18 +00:00
go.mod [infra] Roll infra DEPS, update CIPD packages 2020-12-09 15:56:38 +00:00
go.sum [infra] Roll infra DEPS, update CIPD packages 2020-12-09 15:56:38 +00:00
LICENSE LICENSE file: clean up 2019-11-22 21:59:03 +00:00
OWNERS add OWNERS file 2017-12-01 19:50:19 +00:00
PRESUBMIT.py Revert "Reland "[infra] Switch from isolate to RBE-CAS"" 2020-12-09 18:09:39 +00:00
public.bzl remove SK_BUILD_NO_OPTS 2020-12-08 19:44:02 +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 Remove SkImage::MakeFromYUVATexturesCopyToExternal 2020-12-09 14:50:19 +00:00
whitespace.txt Whitespace change to re-trigger Mac/iOS tests 2020-02-23 20:55:01 +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.