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msarett 93e613d6bd Handle gray alpha conversions in SkSwizzler
Nothing fancy here.  By doing the entire conversion ourselves, we
only need to make one conversion pass over each row.  Additionally,
we optimize the premultiply since we know each color component of
the pixel is identical.

This will also enable us to follow up with platform specific
optimizations.

PNG Decode Time Nexus 6P (for a test set of GrayAlpha encoded PNGs)
Regular   Unpremul 0.95x
Zero Init Unpremul 0.94x
Regular   Premul   0.91x
Zero Init Premul   0.90x

BUG=skia:4767
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1665583002

Review URL: https://codereview.chromium.org/1665583002
2016-02-03 10:44:46 -08:00
animations first cut at a checkbox 2009-10-21 19:41:10 +00:00
bench Add --benchType and --sourceType to nanobench. 2016-02-03 10:40:55 -08:00
bin bin/sync-and-gyp: sh->py (make more cross-platform) 2015-11-09 08:28:13 -08:00
cmake Fix CMake build on Mac. 2016-01-21 17:38:36 -05:00
debugger Add gpu implementation of OverdrawXfermode 2016-01-27 05:00:04 -08:00
dm Support decoding opaque to *premul 2016-02-03 09:42:42 -08:00
example SampleApp: Remove SkWindow::setColorType 2016-01-18 01:18:35 -08:00
experimental SampleApp: Remove SkWindow::setColorType 2016-01-18 01:18:35 -08:00
fuzz Make fuzz broadcast when it terminates via return. 2016-02-01 08:23:50 -08:00
gm extend gm to test aa[] parameter on xfer4f procs 2016-02-03 09:47:46 -08:00
gyp Make helper function on GrGLSLProgramDataManager non virtual 2016-02-03 09:52:51 -08:00
include Add gpu implementation of SkAvoidXfermode 2016-02-03 09:42:49 -08:00
infra Add Test-Ubuntu-GCC-ShuttleA-GPU-GTX660-x86_64-Release to the CQ 2016-01-06 10:54:50 -08:00
platform_tools SampleApp: remove SkWindow::onPDFSaved, it does not work 2016-01-18 00:47:14 -08:00
resources Add RAW decoding into Skia. 2016-01-25 08:26:16 -08:00
samplecode add new tests 2016-01-30 10:11:21 -08:00
site Fix SampleApp instructions in the Windows quick-start 2016-02-02 10:59:30 -08:00
src Handle gray alpha conversions in SkSwizzler 2016-02-03 10:44:46 -08:00
tests Support decoding opaque to *premul 2016-02-03 09:42:42 -08:00
third_party sketch hooking into PNG_FILTER_OPTIMIZATIONS 2016-01-27 13:01:41 -08:00
tools Hack together MSAN build. 2016-02-03 09:21:44 -08:00
.gitignore android/apps: Add CanvasProof App; 2015-09-23 12:40:34 -07:00
AUTHORS use malloc/calloc/free instead of moz_malloc/moz_calloc/moz_free in ports/SkMemory_mozalloc.cpp 2015-11-23 10:30:14 -08:00
codereview.settings Automatically add a docs preview link and NOTRY=true when there are only docs changes. 2015-02-26 10:16:13 -08:00
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 Update the dng_sdk version. The new version handles the posix_memalign() better 2016-02-03 00:50:10 -08:00
Doxyfile Documentation: SkCanvas API 2015-05-19 10:21:29 -07:00
gyp_skia Support SKIA_OUT on Mac and ChromeOS 2015-05-04 08:04:28 -07:00
gyp_skia.py Roll gyp deps from 1765 to 1796. 2013-11-21 18:11:14 +00:00
LICENSE Include resources directory in google3 sync. 2015-10-20 13:00:48 -07:00
make.bat Fix references to https://sites.google.com/site/skiadocs/. 2015-02-03 13:12:54 -02:00
make.py GYP: remove stale skia_scalar gyp variable 2015-11-10 13:25:12 -05:00
Makefile Add visualbench as valid target to Makefile 2015-12-18 08:05:06 -08:00
OWNERS add root files from chrome 2013-08-13 19:11:15 +00:00
PRESUBMIT.py Add link to Gold trybot runs in every uploaded Skia CL 2015-12-15 06:23:33 -08:00
public.bzl Add dm to DM_INCLUDES to fix Google3 build. 2016-02-01 09:05:08 -08:00
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
SK_IMAGE_VERSION Update SK_IMAGE_VERSION to test RAW 2016-02-02 11:56:33 -08:00
skia.gyp Fix references to https://sites.google.com/site/skiadocs/. 2015-02-03 13:12:54 -02:00
SKP_VERSION Update SKP version 2016-01-31 00:30:55 -08:00
whitespace.txt Whitespace change to test SK_IMAGE_VERSION download 2016-01-25 05:00:13 -08:00

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

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