Commit Graph

102 Commits

Author SHA1 Message Date
Cary Clark
721aed27ac minor changes to SkMatrix.h and SkRect.h
Add missing param names so doxygen comments have
something to reference.

Add commas for all members in enums for
consistency across includes.

TBR=reed@google.com
Bug: skia: 6898
Change-Id: Ida92ed6144430072d52846001b2f618043b5b480
Reviewed-on: https://skia-review.googlesource.com/48046
Commit-Queue: Cary Clark <caryclark@skia.org>
Reviewed-by: Cary Clark <caryclark@skia.org>
2017-09-19 13:54:59 +00:00
Brian Salomon
3416969605 Revert "Revert "Revert "Revert "Add GrTextureOp and use to implement SkGpuDevice::drawImage[Rect]() when possible""""
This reverts commit a184ac7e0c.

Change-Id: I2a4a1b713fd998ba33a5f85a34be1645438a7ac9
Reviewed-on: https://skia-review.googlesource.com/39400
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2017-08-28 20:02:16 +00:00
Ben Wagner
a93a14a998 Convert NULL and 0 to nullptr.
This was created by looking at warnings produced by clang's
-Wzero-as-null-pointer-constant. This updates most issues in
Skia code. However, there are places where GL and Vulkan want
pointer values which are explicitly 0, external headers which
use NULL directly, and possibly more uses in un-compiled
sources (for other platforms).

Change-Id: Id22fbac04d5c53497a53d734f0896b4f06fe8345
Reviewed-on: https://skia-review.googlesource.com/39521
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2017-08-28 17:48:57 +00:00
Cary Clark
0e616cf9e3 comment SK_API and add fix params
I thought that SK_API on operator== was 
redundant with SK_API on the enclosing class,
and was not needed. Turns out for mac_chromium_debug_ng
it is needed. Added comments for history.

Meanwhile, bookmaker found some missing and
mis-named parameters, so all is not lost.

R=reed@google.com

Change-Id: I88645666a9d06ec90c5ac133673460d6e6c75528
Reviewed-on: https://skia-review.googlesource.com/17277
Commit-Queue: Cary Clark <caryclark@google.com>
Reviewed-by: Mike Reed <reed@google.com>
2017-05-18 20:06:21 +00:00
Mike Reed
ca49067a33 optimize intersect, use getType to utilize fast-case in preTranslate
10-15% speed up in clip_record_overhead bench

Comparing the raw fType field was missing the (maybe deprecatable) IsRectToRect
bit (0x10), which is set for identity and translate matrices, so we were
never taking the fast case.

BUG=skia:

Change-Id: I1c73f4bae42f2311454c7568ef8891239c3cae83
Reviewed-on: https://skia-review.googlesource.com/9388
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Herb Derby <herb@google.com>
2017-03-07 20:51:34 +00:00
Mike Klein
afe7a5f848 Add some thread safety notes.
These are the main problems we tend to hit with multithreaded drawing.

Change-Id: I63dc56f38a533eb839d36833e865af5fcc700d3b
Reviewed-on: https://skia-review.googlesource.com/9100
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
2017-03-02 13:44:49 +00:00
Brian Salomon
3f36369a94 Batch across matrix changes in drawVertices and add GM to test.
Change-Id: I6b08d37781e3c715a1d9d8c9729667ec78625836
Reviewed-on: https://skia-review.googlesource.com/7949
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2017-02-03 02:34:37 +00:00
fmalita
088e21ba65 Harden degenerate gradient context handling
Certain inputs produce degenerate values at context creation time only.

Detect such cases after context creation, and abort drawing by returning
a null shader context instead.

BUG=skia:5821
R=reed@google.com,brianosman@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2397473003

Review-Url: https://codereview.chromium.org/2397473003
2016-10-05 09:28:42 -07:00
reed
a39667c848 add SkMatrixPriv for specialized helpers
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2268443002

Review-Url: https://codereview.chromium.org/2268443002
2016-08-22 06:39:49 -07:00
halcanary
c5769b2e49 Revert of Change mapRectScaleTranslate to pass args/ret by value (patchset #2 id:20001 of https://codereview.chromium.org/2138943002/ )
Reason for revert:
Build-Ubuntu-GCC-Arm7-Release-Android fails.

Original issue's description:
> Change mapRectScaleTranslate to pass args/ret by value
>
> This reverts commit 6092b6e0e5.
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2138943002
>
> Committed: https://skia.googlesource.com/skia/+/1bd13ca922d6448d595064faee486eaf3fa56e56

TBR=mtklein@google.com,msarett@google.com,reed@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review-Url: https://codereview.chromium.org/2234843002
2016-08-10 07:13:21 -07:00
reed
1bd13ca922 Change mapRectScaleTranslate to pass args/ret by value
This reverts commit 6092b6e0e5.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2138943002

Review-Url: https://codereview.chromium.org/2138943002
2016-08-10 06:17:54 -07:00
reed
6092b6e0e5 Revert of change mapRectScaleTranslate to pass args/ret by value (patchset #1 id:1 of https://codereview.chromium.org/2137853002/ )
Reason for revert:
Triggered a compiler bug on Android?

FAILED: /usr/bin/ccache /b/work/skia/platform_tools/android/bin/../toolchains/arm-r11c-14/bin/arm-linux-androideabi-g++ -MMD -MF obj/src/core/core.SkMatrix.o.d -DSK_INTERNAL -DSK_GAMMA_APPLY_TO_A8 -DQT_NO_KEYWORDS -DSK_ALLOW_STATIC_GLOBAL_INITIALIZERS=0 -DSK_SUPPORT_GPU=1 -DSK_FORCE_DISTANCE_FIELD_TEXT=0 -DSK_HAS_GIF_LIBRARY -DSK_HAS_JPEG_LIBRARY -DSK_HAS_PNG_LIBRARY -DSK_HAS_WEBP_LIBRARY -DSK_TEST_QCMS -DSK_IS_BOT -DSK_CODEC_DECODES_RAW -DSK_ARM_HAS_NEON -DSK_BUILD_FOR_ANDROID -DSK_GAMMA_EXPONENT=1.4 -DSK_GAMMA_CONTRAST=0.0 -DSKIA_DLL -DSKIA_IMPLEMENTATION=1 -DSK_SUPPORT_LEGACY_CLIPTOLAYERFLAG -DNDEBUG -I../../../include/c -I../../../include/config -I../../../include/core -I../../../include/pathops -I../../../include/ports -I../../../include/private -I../../../include/utils -I../../../include/images -I../../../src/core -I../../../src/sfnt -I../../../src/image -I../../../src/opts -I../../../src/utils -I../../../include/gpu -I../../../src/gpu -I../../../platform_tools/android/third_party/cpufeatures -fPIC -g -fno-exceptions -fstrict-aliasing -Wall -Wextra -Winit-self -Wpointer-arith -Wsign-compare -Wvla -Wno-unused-parameter -Werror -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=softfp -fuse-ld=gold -O2 -std=c++11 -fno-rtti -fno-threadsafe-statics -Wnon-virtual-dtor  -c ../../../src/core/SkMatrix.cpp -o obj/src/core/core.SkMatrix.o
../../../src/core/SkMatrix.cpp: In member function 'SkRect SkMatrix::mapRectScaleTranslate(SkRect) const':
../../../src/core/SkMatrix.cpp:1120:1: error: unrecognizable insn:
 }
 ^
(insn 32 31 33 2 (set (reg:V4SF 115 [ D.83077 ])
        (unspec:V4SF [
                (mem/c:V4SF (reg/f:SI 104 virtual-incoming-args) [0 MEM[(const __builtin_neon_sf[4] *)&src]+0 S16 A32])
            ] UNSPEC_VLD1)) /b/work/skia/platform_tools/android/toolchains/arm-r11c-14/lib/gcc/arm-linux-androideabi/4.9/include/arm_neon.h:8693 -1
     (nil))
../../../src/core/SkMatrix.cpp:1120:1: internal compiler error: in extract_insn, at recog.c:2202
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://source.android.com/source/report-bugs.html> for instructions.

Original issue's description:
> change mapRectScaleTranslate to pass args/ret by value
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2137853002
>
> TBR=mtklein
>
> Committed: https://skia.googlesource.com/skia/+/14dce6ed5934d7a6e1fac79f8e76e12f5670aae2

TBR=msarett@google.com,mtklein@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review-Url: https://codereview.chromium.org/2139523002
2016-07-10 11:45:35 -07:00
reed
14dce6ed59 change mapRectScaleTranslate to pass args/ret by value
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2137853002

TBR=mtklein

Review-Url: https://codereview.chromium.org/2137853002
2016-07-10 11:35:03 -07:00
reed
2dcb615c6f make setScaleTranslate public
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2122093002

TBR=

Review-Url: https://codereview.chromium.org/2122093002
2016-07-05 20:10:42 -07:00
reed
47df89ebfd speed up maprect for scale+trans case
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2111703002

Review-Url: https://codereview.chromium.org/2111703002
2016-06-30 06:38:54 -07:00
bsalomon
78d58d1084 Make SkPath::isOval() and SkPath::isRRect return the orientation and starting index.
These are tracked in SkPathRef.

Unit tests are updated to test that the returned values are correct.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2012233002

Review-Url: https://codereview.chromium.org/2012233002
2016-05-27 09:17:04 -07:00
benjaminwagner
8e17556349 Change SkMatrix::fixedStepInX to return SkVector (of SkScalar) rather than SkFixed.
All users were immediately converting to SkScalar or SkFixed3232.

This method is not used in Chromium, Android, or Google3.

BUG=skia:4632
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1692013002

Review URL: https://codereview.chromium.org/1692013002
2016-02-16 10:09:40 -08:00
bsalomon
ef2c7c7057 Make SkMatrix::get*Scale[s]() fail on NaN
BUG=skia:4718
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1532963002

Review URL: https://codereview.chromium.org/1532963002
2015-12-17 15:33:13 -08:00
mtklein
b68ce74bd1 Add SK_BEGIN_REQUIRE_DENSE / SK_END_REQUIRE_DENSE.
Use in on a few examples of things we hash.

BUG=skia:

Review URL: https://codereview.chromium.org/1468483002
2015-11-24 05:35:58 -08:00
reed
021f631dc6 api helpers inspired by blink use-cases
BUG=skia:
TBR=

Review URL: https://codereview.chromium.org/1278323002
2015-08-09 19:41:13 -07:00
robertphillips
07abbbec4b Fix up SkMatrix::isFinite call
Review URL: https://codereview.chromium.org/1228473004
2015-07-06 12:15:34 -07:00
reed
71c3c760a8 add SkCanvas::drawAtlas
BUG=skia:

Review URL: https://codereview.chromium.org/1181913003
2015-06-24 10:29:18 -07:00
robertphillips
8b1fa6dd8d Fix precision error in https://codereview.chromium.org/1188433011/
TBR=reed@google.com

Review URL: https://codereview.chromium.org/1192853002
2015-06-19 06:40:02 -07:00
robertphillips
20eee3f047 Added check for ill-conditioned invert
sk_inv_determinant has a guard that the determinant can't get too big so this CL only checks if the determinant gets too small.

BUG=492263

Review URL: https://codereview.chromium.org/1188433011
2015-06-19 05:14:26 -07:00
reed
80ea19ca4b Revert of Revert of stop calling SkScalarDiv (patchset #1 id:1 of https://codereview.chromium.org/1138263002/)
Reason for revert:
android patched, blink has rolled

Original issue's description:
> Revert of stop calling SkScalarDiv (patchset #4 id:60001 of https://codereview.chromium.org/1135053002/)
>
> Reason for revert:
> need to wait for Blink roll (and patch android)
>
> Original issue's description:
> > stop calling SkScalarDiv
> >
> > BUG=skia:
> > TBR=
> >
> > Committed: https://skia.googlesource.com/skia/+/67d71c898249a7af3523b16c6a69895a63bfae0a
>
> TBR=
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/2629697933b5cc975e45d2a45c48f803fc6cbcec

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1135693003
2015-05-12 10:37:34 -07:00
reed
2629697933 Revert of stop calling SkScalarDiv (patchset #4 id:60001 of https://codereview.chromium.org/1135053002/)
Reason for revert:
need to wait for Blink roll (and patch android)

Original issue's description:
> stop calling SkScalarDiv
>
> BUG=skia:
> TBR=
>
> Committed: https://skia.googlesource.com/skia/+/67d71c898249a7af3523b16c6a69895a63bfae0a

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1138263002
2015-05-12 10:28:06 -07:00
reed
67d71c8982 stop calling SkScalarDiv
BUG=skia:
TBR=

Review URL: https://codereview.chromium.org/1135053002
2015-05-12 09:47:22 -07:00
fmalita
f57546ec7f Remove SK_SUPPORT_LEGACY_SCALAR_MAPPOINTS
No longer used in Chromium.

Also drop now-unused SkMatrix::Rot_pts() & SkMatrix::RotTrans_pts().

BUG=475022
R=reed@google.com,mtklein@google.com

Review URL: https://codereview.chromium.org/1071833002
2015-04-09 06:13:15 -07:00
reed
7da19014fd use Sk4f for matrix math
Need to land SK_SUPPORT_LEGACY_SCALAR_MAPPOINTS in chrome to suppress Affine
version which causes slight differences (which will need to be rebaselined)

BUG=skia:

Review URL: https://codereview.chromium.org/1045493002
2015-03-29 11:58:48 -07:00
reed
d8b34c26c2 use table of procs (and unrolling) to speed up mapPts
BUG=skia:

Review URL: https://codereview.chromium.org/1040783002
2015-03-27 14:00:41 -07:00
robertphillips
1d24b8dfe9 Add matrix constructing helpers to SkMatrix
Review URL: https://codereview.chromium.org/1034273002
2015-03-26 19:57:08 -07:00
reed
8010632f24 remove meaningless matrix benches, add mapPts() and add new benches
mapPts definitely faster than mapPoints (identity and perspective same speed). Up to 3x for large values of N.

cloned from https://codereview.chromium.org/1031443002/

BUG=skia:

Review URL: https://codereview.chromium.org/1030653002
2015-03-23 08:15:14 -07:00
reed
adf9990cb5 add SkMatrix::decomposeScale
BUG=skia:

Review URL: https://codereview.chromium.org/1006173005
2015-03-19 16:10:54 -07:00
reed
11fa2247b7 some utils for rect and matrix
BUG=skia:

Review URL: https://codereview.chromium.org/1003813003
2015-03-13 06:08:28 -07:00
reed
3f43f8ab9c remove dead SkPersp macros
BUG=skia:
TBR=

Review URL: https://codereview.chromium.org/864713002
2015-01-20 19:58:36 -08:00
reed
451e822705 add get9 and set9 to matrix, to aid in making keys
BUG=skia:
TBR=
NOTREECHECKS=True

Review URL: https://codereview.chromium.org/806543002
2014-12-13 08:46:49 -08:00
mtklein
af57903f33 Force SkMatrix type while recording too.
This switches to a new way of doing this, enforcing the caching with the type
recorded rather than having to do it in SkRecorder.  Should be more foolproof.

Updated SkPath and SkBitmap's equivalents too.  ImmutableBitmap was close,
but using inheritance now makes the rest of the code less weird.

BUG=437511

I'm not sure whether or not this will _fix_ the SkMatrix aspect of that bug.
There may be other SkMatrices that we're racing on.  It does cover the obvious
ones, though, and removing the SkTRacy<> wrapper will allow TSAN to show
us any other races.

It turned out to be easier to turn missing optional matrices into I early rather
than late.  I figure this should be harmless.  Recording and playback perf both
look neutral.

Review URL: https://codereview.chromium.org/773433003
2014-12-01 11:03:37 -08:00
robertphillips
9f2251c73e Crop the fast path dashed lines to the cull rect
Without:

maxrss  loops   min     median  mean    max     stddev  samples         config  bench
  56M   1       13.3ms  13.6ms  13.6ms  14.2ms  2%      Ooooo.....      8888    GM_dashing5_bw
  56M   13      390us   417us   416us   459us   5%      ooooO..o.o      gpu     GM_dashing5_bw
  56M   1       13.4ms  13.9ms  14.1ms  15ms    3%      Oooo..ooOo      8888    GM_dashing5_aa
  56M   13      402us   421us   416us   425us   2%      Ooo.ooOOOO      gpu     GM_dashing5_aa

With:

  40M   1       1.53ms  1.54ms  1.54ms  1.55ms  0%      oo.O...o..      8888    GM_dashing5_bw
  40M   12      407us   412us   415us   445us   3%      ...Oo.....      gpu     GM_dashing5_bw
  40M   1       1.7ms   1.7ms   1.7ms   1.72ms  0%      o.O.......      8888    GM_dashing5_aa
  43M   13      405us   409us   409us   415us   1%      ooo.Ooo..o      gpu     GM_dashing5_aa

The GM images (including the new one) are the same with and without this CL.

BUG=428296

Review URL: https://codereview.chromium.org/699623003
2014-11-04 13:33:50 -08:00
junov
ed53742e92 Add SK_API to global scope operators of SkMatrix
Review URL: https://codereview.chromium.org/678153002
2014-10-28 07:14:58 -07:00
reed
2cc22b8f2f make SkMatrix::dump always available
BUG=skia:
TBR=

Review URL: https://codereview.chromium.org/624783002
2014-10-02 17:52:03 -07:00
reed
d1f0ebd0e2 specialize setConcat for scale+translate
This reverts commit 2a382f5199.

BUG=skia:

Review URL: https://codereview.chromium.org/626583002
2014-10-02 12:58:43 -07:00
robertphillips
2a382f5199 Revert of specialize setConcat for scale+translate (patchset #1 id:1 of https://codereview.chromium.org/620433002/)
Reason for revert:
Experimental to see if this revert "fixes" nanobench on the main console.

Original issue's description:
> specialize setConcat for scale+translate, helps drawText perf
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/e8db3ef2a2161084fa8eb1fd1d54c35bfff52d6c

TBR=jvanverth@google.com,reed@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/620973003
2014-10-02 04:42:55 -07:00
reed
e8db3ef2a2 specialize setConcat for scale+translate, helps drawText perf
BUG=skia:
R=jvanverth@google.com

Author: reed@google.com

Review URL: https://codereview.chromium.org/620433002
2014-09-30 07:24:47 -07:00
bsalomon
49f085dddf "NULL !=" = NULL
R=reed@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/544233002
2014-09-05 13:34:00 -07:00
jvanverth
17a845f760 Fix matrix similarity test on arm64
Addresses precision issue by using a simpler test.
Also fixes issues with IvMatrix::preservesRightAngles, and adds unit tests.

BUG=skia:2405
R=robertphillips@google.com, egdaniel@google.com, djsollen@google.com, reed@google.com

Author: jvanverth@google.com

Review URL: https://codereview.chromium.org/520123002
2014-09-02 13:15:41 -07:00
mtklein
0b544ae222 Add SkRacy
SkRacy<T> is a zero-overhead wrapper for a T, except it also
silences race warnings when TSAN is running.

Here we apply in several classes.  In SkMatrix and SkPathRef,
we use it to opportunistically cache some idempotent work.

In SkPixelRef, we wrap the genIDs.  We think the worst that
can happen here is we'll increment the global next-genID a
few times instead of once when we go to get another ID.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/d5e3e6ae1b3434ad1158f441902ff65f1eeaa3a7

CQ_EXTRA_TRYBOTS=tryserver.skia:Canary-Chrome-Ubuntu13.10-Ninja-x86_64-ToT-Trybot,Canary-Chrome-Win7-Ninja-x86-SharedLib_ToT-Trybot,Test-Ubuntu13.10-GCE-NoGPU-x86_64-Release-TSAN-Trybot
R=reed@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/371363004
2014-07-08 19:37:47 -07:00
mtklein
d3f3e5895e Revert of Add SkRacy (https://codereview.chromium.org/371363004/)
Reason for revert:
hidden symbol 'AnnotateBenignRaceSized' in obj/base/third_party/dynamic_annotations/libdynamic_annotations.a(obj/base/third_party/dynamic_annotations/dynamic_annotations.dynamic_annotations.o) is referenced by DSO lib/libblink_platform.so

Original issue's description:
> Add SkRacy
>
> SkRacy<T> is a zero-overhead wrapper for a T, except it also
> silences race warnings when TSAN is running.
>
> Here we apply in several classes.  In SkMatrix and SkPathRef,
> we use it to opportunistically cache some idempotent work.
>
> In SkPixelRef, we wrap the genIDs.  We think the worst that
> can happen here is we'll increment the global next-genID a
> few times instead of once when we go to get another ID.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/d5e3e6ae1b3434ad1158f441902ff65f1eeaa3a7

R=reed@google.com, mtklein@chromium.org
TBR=mtklein@chromium.org, reed@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/377693005
2014-07-08 14:06:46 -07:00
mtklein
d5e3e6ae1b Add SkRacy
SkRacy<T> is a zero-overhead wrapper for a T, except it also
silences race warnings when TSAN is running.

Here we apply in several classes.  In SkMatrix and SkPathRef,
we use it to opportunistically cache some idempotent work.

In SkPixelRef, we wrap the genIDs.  We think the worst that
can happen here is we'll increment the global next-genID a
few times instead of once when we go to get another ID.

BUG=skia:
R=reed@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/371363004
2014-07-08 12:30:39 -07:00
skia.committer@gmail.com
29de433b06 Sanitizing source files in Housekeeper-Nightly
git-svn-id: http://skia.googlecode.com/svn/trunk@14817 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-05-21 03:05:49 +00:00
commit-bot@chromium.org
311a3cda94 Add function to get both min and max scale factors from matrix
R=reed@google.com, jvanverth@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/298473002

git-svn-id: http://skia.googlecode.com/svn/trunk@14804 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-05-20 17:02:03 +00:00