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Brian Osman 0351d5af88 Add user docs about Skia coordinate spaces 
Includes a general explanation of device vs. local, how shaders don't
move with geometry, and how to use canvas transforms. Also shows
localMatrix on an SkShader. Finally, links to that from the SkSL page,
and adds SkSL-specific notes about coordinates.

Bug: skia:11763
Change-Id: I31462aff66ff8514392098b972a10e7c96e4f254
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/393516
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
2021-04-09 13:50:19 +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 clean up drawTextUTF8 and rename to textToGlyphRunList 2021-04-02 21:07:25 +00:00
bin Fix Python3 compatibility 2021-03-25 14:15:35 +00:00
build/fuchsia [fuchsia] Fix fidlc command. 2020-06-10 03:29:24 +00:00
build_overrides Prepare for Dawn using Tint unconditionally. 2021-03-12 15:05:26 +00:00
client_utils/android Replace 'typedef xxxxx INHERITED' with 'using INHERITED = xxxx;'. 2020-09-03 03:41:26 +00:00
demos.skia.org Clean up prev experiment. 2021-03-05 15:56:14 +00:00
dm Make use of shareable promise images in tools 2021-03-30 14:25:55 +00:00
docker [infra] Fix index.d.ts copy in Wasm Docker build 2021-02-23 15:54:11 +00:00
docs/examples Must pass filtering to picture shader 2021-03-18 22:18:47 +00:00
example Reland "Remove use of legacy display globals." 2020-10-05 19:13:58 +00:00
experimental GrConvertPixels takes pixmaps 2021-03-31 00:23:17 +00:00
fuzz [fuzz] Expose Region Op fuzzing to oss-fuzz. 2021-03-29 16:05:05 +00:00
gm Added _Type suffix to DSL Type enum 2021-04-08 21:55:05 +00:00
gn Rename composite constructors to compound constructors. 2021-04-07 19:13:20 +00:00
include Added _Type suffix to DSL Type enum 2021-04-08 21:55:05 +00:00
infra Upgrade Go to 1.16.3. 2021-04-09 13:33:37 +00:00
modules Support integer uniforms in CanvasKit runtime effects 2021-04-09 12:42:17 +00:00
platform_tools [androidkit] initial commit for androidkit 2021-04-08 20:21:04 +00:00
resources Implement struct == and != on SPIR-V. 2021-04-08 17:17:34 +00:00
samplecode SkAuto[S]TMalloc only for trivially constructible/destructible. 2021-03-31 13:55:45 +00:00
site Add user docs about Skia coordinate spaces 2021-04-09 13:50:19 +00:00
specs Fix CanvasKit generated documentation to work with emscripten 1.39.16. 2020-05-27 12:23:32 +00:00
src Remove inaccurate assert in attemptQuadOptimization 2021-04-08 23:56:45 +00:00
tests Added _Type suffix to DSL Type enum 2021-04-08 21:55:05 +00:00
third_party Roll skcms from c8a56c57ab7c to 411e27776f5c (1 revision) 2021-04-01 16:00:03 +00:00
tools Revert "put an arena on GrSurfaceDrawContext" 2021-04-06 20:16:08 +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 Update gitignore for goma win_toolchain 2021-02-01 17:25:52 +00:00
.gn Pre-emptive fix for upcoming ANGLE change. 2021-01-08 17:23:52 +00:00
AUTHORS Add UWP support 2021-02-10 19:04:42 +00:00
BUILD.bazel bazel baby steps 2020-09-14 15:18:32 +00:00
BUILD.gn [androidkit] initial commit for androidkit 2021-04-08 20:21:04 +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 Chromium from 1a1c57de9e55 to 5368f81b40a5 (483 revisions) 2021-04-09 05:07:46 +00:00
DIR_METADATA Move metadata in OWNERS files to DIR_METADATA files 2021-02-02 23:41:54 +00:00
go.mod [infra] Roll infra dependency 2021-02-25 19:56:00 +00:00
go.sum [infra] Roll infra dependency 2021-02-25 19:56:00 +00:00
LICENSE LICENSE file: clean up 2019-11-22 21:59:03 +00:00
PRESUBMIT.py Display a Docs-Preview link for each modified MD file 2021-04-02 01:08:04 +00:00
public.bzl Remove NVPR 2021-03-19 12:26:38 +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 Require that runtime effect child variables are 'uniform' 2021-04-07 13:16:28 +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.