All of the published coefficients assume math is being done on bytes, and
that 128 is the encoding of 0 (in the biased Cb and Cr values). When
sampling an A8 texture, though, GPUs typically decode as byte/255. Thus,
128 ends up slightly larger than 0.5. To fix this, just adjust the bias
terms to be scaled by 128/255, rather than 0.5.
I also changed some of the other coefficients to be higher precision,
based on the values in ITU-T T.871.
This originally surfaced as a Chromium bug where an all-black JPG decoded
to (1/255, 0, 1/255) on GPU. I've added a GM that encodes a color cube to
JPG, then draws from the encoded data. GPU and CPU (libjpeg) still
disagree in many cases, but the newer version performs much better
(diffing gl and 8888 configs):
Previously: 95.2% of pixels differ, max diff of 2, avg diff of 1
Now : 65.4% of pixels differ, max diff of 1, avg diff of 0
Bug: skia:7038 chromium:763605
Change-Id: I4801db9f6e2fc4d4109eb5e27c9499f214084d38
Reviewed-on: https://skia-review.googlesource.com/45842
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
BUG=chromium:745290
Change-Id: I78cabf988115598e14a7ce39faf96e3a697a1a8f
Reviewed-on: https://skia-review.googlesource.com/34382
Commit-Queue: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
rm gm that appears to have been there solely for pdf, but we don't use
it for that now.
Bug: skia:
Change-Id: I3cf88db923c2445b7c95dda14da679a594117643
Reviewed-on: https://skia-review.googlesource.com/31760
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Our new srgb_color_filter (in gm/srgb_color_filter.cpp) is awfully
similar to the existing srgb_colorfilter (in gm/srgb.cpp).
Let's rename the new one.
Change-Id: I8c7816c377cc4342388be51632353882a1bc5241
Reviewed-on: https://skia-review.googlesource.com/26525
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This reverts commit fa3ed03720.
Reason for revert: GM is failing on a lot of bots
Original change's description:
> Add GM to test SkToSRGBColorFilter
>
> Bug: skia:
> Change-Id: If342ad5503d1b427f2d04ce15b75f0f7fa2706c1
> Reviewed-on: https://skia-review.googlesource.com/26426
> Reviewed-by: Mike Klein <mtklein@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>
TBR=djsollen@google.com,mtklein@google.com,brianosman@google.com
Change-Id: I92fe179ead6d115b32b3a9533b8ee0e10bb3ee43
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/26522
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Bug: skia:
Change-Id: If342ad5503d1b427f2d04ce15b75f0f7fa2706c1
Reviewed-on: https://skia-review.googlesource.com/26426
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Gaussian blur filter will interpolate value by using out of bounds
coords, which is 0. This makes it appears darker near the bounds in the
blurred images. There are two issues: 1) when downsampling and
upsampling, we should use GrTextureDomainEffect kClamp_Mode to clamp
the texture coords to the bounds; 2) during Gaussian blur, we need to
clamp to texture bounds.
BUG=622128
TEST=cc_unittests, GM image test & manual. Some test results can be found at:
https://bugs.chromium.org/p/chromium/issues/detail?id=622128#c49
Change-Id: I9283da1d91efb0da94a991f2d372e9f62c288bdc
Reviewed-on: https://skia-review.googlesource.com/20465
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Stephen White <senorblanco@chromium.org>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Adding a GM (Golden Master) image test in Skia to reproduce the bleed
black issue in Chrome. This would allow regressions to be caught in
Skia's status page before being rolled into Chrome.
Bug: 622128
Change-Id: Ifd2824fff59483c8e4be48392ba467414d41ca13
TEST=imageblurclampmode.cpp
Reviewed-on: https://skia-review.googlesource.com/20778
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
I think this has been broken since we tried to simplify this in
https://skia-review.googlesource.com/16547
The HSW backend does still look a little wrong, but improved,
and the others seem fixed. Can you see how this affects your
test cases, layout tests, etc?
BUG=skia:6783
Change-Id: I17957ac8100331bea5b64d674bf43105048b72f6
Reviewed-on: https://skia-review.googlesource.com/20548
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
This should be immediately useful in the Skia-Android
rendering pipeline.
Possible future uses include creating a "renderable"
SkImage from a bitmap with a funny color space.
Inspired by:
https://skia-review.googlesource.com/c/13981/
Bug: b/62347704
Change-Id: I388c7af1fc43834b8ad22022d0caf3ac90b734c8
Reviewed-on: https://skia-review.googlesource.com/18598
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
Also, remvoes SkNormalBevelSource as this was the last use case for the distance vector field.
Change-Id: Ib0176c78e500e6b5130310934253a75860245812
Reviewed-on: https://skia-review.googlesource.com/18482
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
This reverts commit ee26363aaa.
Reason for revert: Failing Google 3 roll.
Original change's description:
> Remove compressed (ETC1) texture support from Ganesh
>
> Change-Id: If4cf286df87ea87338aba47001d90a5fcc4f2667
> Reviewed-on: https://skia-review.googlesource.com/17456
> Commit-Queue: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
>
TBR=bsalomon@google.com,robertphillips@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: Ie1a57187287e03600a69e374501478e93c41415c
Reviewed-on: https://skia-review.googlesource.com/17527
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This demonstrates a new kind of hybrid unit test/GM.
It creates a grid of cells. In each cell, we do two
renders that are expected to produce the same result.
For each cell, we render the two results overlaid,
and highlight any differing pixels in red. Assuming
there is a diff, the area around the largest diff
is drawn zoomed in from both images.
Matching cells are outlined in green, failing cells
are outlined in red. Triaging this GM just involves
answering the question: "Are there any red boxes?"
"Good" example: https://screenshot.googleplex.com/909P3tvS55f.png
"Bad" example: https://screenshot.googleplex.com/oXBWbEKw5ur.png
To get more tests to pass, (and fix an assert
in Ganesh), I've gone ahead and enforced that user
supplied rects (in drawRect and drawOval) are
always sorted once they hit the canvas virtuals.
Currently, drawArc rejects empty ovals, but I added
the same assert to onDrawArc, if we decide to change
the strategy there.
Re-land of: https://skia-review.googlesource.com/c/16983/
Bug: skia:
Change-Id: I48f85de5f2bcb7fdc9558c2fd80cb1f20800b244
Reviewed-on: https://skia-review.googlesource.com/17270
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This reverts commit 78d1b428a8.
Reason for revert: break preabandongpu bot
Original change's description:
> Add GM to verify that drawX == (path.addX, drawPath)
>
> This demonstrates a new kind of hybrid unit test/GM.
> It creates a grid of cells. In each cell, we do two
> renders that are expected to produce the same result.
> For each cell, we render the two results overlaid,
> and highlight any differing pixels in red. Assuming
> there is a diff, the area around the largest diff
> is drawn zoomed in from both images.
>
> Matching cells are outlined in green, failing cells
> are outlined in red. Triaging this GM just involves
> answering the question: "Are there any red boxes?"
>
> "Good" example: https://screenshot.googleplex.com/909P3tvS55f.png
> "Bad" example: https://screenshot.googleplex.com/oXBWbEKw5ur.png
>
> To get more tests to pass, (and fix an assert
> in Ganesh), I've gone ahead and enforced that user
> supplied rects (in drawRect and drawOval) are
> always sorted once they hit the canvas virtuals.
> Currently, drawArc rejects empty ovals, but I added
> the same assert to onDrawArc, if we decide to change
> the strategy there.
>
> Bug: skia:
> Change-Id: I021a18c85e234298e1d29f333662683d996dd42c
> Reviewed-on: https://skia-review.googlesource.com/16983
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Mike Klein <mtklein@chromium.org>
> Reviewed-by: Mike Reed <reed@google.com>
>
TBR=mtklein@chromium.org,mtklein@google.com,brianosman@google.com,reed@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Bug: skia:
Change-Id: Id1ead4e22115c49cad5d0adb6151ede81734b4d3
Reviewed-on: https://skia-review.googlesource.com/17269
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
This demonstrates a new kind of hybrid unit test/GM.
It creates a grid of cells. In each cell, we do two
renders that are expected to produce the same result.
For each cell, we render the two results overlaid,
and highlight any differing pixels in red. Assuming
there is a diff, the area around the largest diff
is drawn zoomed in from both images.
Matching cells are outlined in green, failing cells
are outlined in red. Triaging this GM just involves
answering the question: "Are there any red boxes?"
"Good" example: https://screenshot.googleplex.com/909P3tvS55f.png
"Bad" example: https://screenshot.googleplex.com/oXBWbEKw5ur.png
To get more tests to pass, (and fix an assert
in Ganesh), I've gone ahead and enforced that user
supplied rects (in drawRect and drawOval) are
always sorted once they hit the canvas virtuals.
Currently, drawArc rejects empty ovals, but I added
the same assert to onDrawArc, if we decide to change
the strategy there.
Bug: skia:
Change-Id: I021a18c85e234298e1d29f333662683d996dd42c
Reviewed-on: https://skia-review.googlesource.com/16983
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Dither can bump color values above alpha (duh), or below
zero (duh), so clamp back to premul after dithering.
BUG=skia:6644,skia:6643
Change-Id: Ida107e866380e06130af0d01467117bca929ba44
Reviewed-on: https://skia-review.googlesource.com/17070
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
rcp(rsqrt(x)) doesn't have enough precision when x is a coordinate.
(It's fine when x is a color, like in the softlight blend mode.)
Adds a GM to test this. It used to look quite ugly.
Change-Id: Icec295c2e2f50ae7a5e3e33c62270f632a58f65c
Reviewed-on: https://skia-review.googlesource.com/16914
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Designed for Flutter's threading architecture, with
an eye to being useful to other clients. Under the
hood, uses a new image generator class to lazily wrap
a texture for multiple GrContexts.
Re-land of https://skia-review.googlesource.com/c/14180/
Bug: skia:
Change-Id: I3dd382640629b79b3058f18fee68d043566e43e5
Reviewed-on: https://skia-review.googlesource.com/15895
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This instructs us on how to encode jpegs when the src
image has alpha. The original behavior is to ignore
the alpha channel. This CL adds the option to blend
the pixels onto opaque black.
Note that kBlendOnBlack and kIgnore are identical
unless the input alpha type is kUnpremul.
Bug: 713862
Bug: skia:1501
Change-Id: I4891c70bb0ccd83f7974c359bd40a2143b5c49ac
Reviewed-on: https://skia-review.googlesource.com/15817
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
This reverts commit 83b1b3db36.
Reason for revert: unit test failing and asan leaks
Original change's description:
> Added SkImage::MakeCrossContextFromEncoded
>
> Designed for Flutter's threading architecture, with
> an eye to being useful to other clients. Under the
> hood, uses a new image generator class to lazily wrap
> a texture for multiple GrContexts.
>
> Bug: skia:
> Change-Id: I6c37b12c8ab5bce94b91190e5f0beb91d31ae81b
> Reviewed-on: https://skia-review.googlesource.com/14180
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
>
TBR=egdaniel@google.com,bsalomon@google.com,robertphillips@google.com,brianosman@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: I1f0bf580aa0ea2d132e18b64ff610ddac9d073a7
Reviewed-on: https://skia-review.googlesource.com/15892
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Designed for Flutter's threading architecture, with
an eye to being useful to other clients. Under the
hood, uses a new image generator class to lazily wrap
a texture for multiple GrContexts.
Bug: skia:
Change-Id: I6c37b12c8ab5bce94b91190e5f0beb91d31ae81b
Reviewed-on: https://skia-review.googlesource.com/14180
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Change-Id: I2c8b9df3e6bf40de4b38966fa8ea671fc68aa45f
Reviewed-on: https://skia-review.googlesource.com/15635
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Completes implementation for lazy and raster images. gpu is
still a TODO.
Bug: skia:6553
Change-Id: I898e4464ffc91442c7f98669f1203dd5c203621b
Reviewed-on: https://skia-review.googlesource.com/15307
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
This reverts commit 9ad0531a18.
Reason for revert: Does not handle transfer fn behavior.
Original change's description:
> Add SkImage::makeColorSpace() with correct transfer fn behavior
>
> Completes implementation for lazy and raster images. gpu is
> still a TODO.
>
> Bug: skia:6553
> Change-Id: I04eea5c4fb53c50c0406c2e6b6778b0e21fd85f8
> Reviewed-on: https://skia-review.googlesource.com/14403
> Commit-Queue: Matt Sarett <msarett@google.com>
> Reviewed-by: Mike Reed <reed@google.com>
>
TBR=mtklein@google.com,msarett@google.com,brianosman@google.com,reed@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: I3830321aea7d0dc5ab38a40f3318bb53a41df383
Reviewed-on: https://skia-review.googlesource.com/15306
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
Completes implementation for lazy and raster images. gpu is
still a TODO.
Bug: skia:6553
Change-Id: I04eea5c4fb53c50c0406c2e6b6778b0e21fd85f8
Reviewed-on: https://skia-review.googlesource.com/14403
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Bug: skia:6557
Change-Id: I6482d74be7b360c93141a73dd80c67854530c7a1
Reviewed-on: https://skia-review.googlesource.com/15101
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Starting with the bug fix + test.
Broken off of:
https://skia-review.googlesource.com/c/13976
Bug: skia:
Change-Id: If6c28e2dfb0c5340c48e943d0313a9ea9515a6c3
Reviewed-on: https://skia-review.googlesource.com/14061
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Matt Sarett <msarett@google.com>
Fixes cts tests.
b/37161109
b/37237678
Bug: skia:
Change-Id: Ida9ac5e4261e8a6b22e8cdc0e585e0e7929dbbfd
Reviewed-on: https://skia-review.googlesource.com/13249
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
deprecated API still used in android -- will fix (and then delete)
BUG=skia:6366
Change-Id: Icd87acc680f7c8ae66ac231cb5d254f5eb178008
Reviewed-on: https://skia-review.googlesource.com/9864
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Reed <reed@google.com>
BUG=skia:
Change-Id: I36755f4bbc405a8af12990573e1f554df012b30a
Reviewed-on: https://skia-review.googlesource.com/9402
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Change-Id: I060419bc39484b379329a1691e199d9d3db9c808
Reviewed-on: https://skia-review.googlesource.com/8807
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
This is a color filter to apply several contrast adjustments for users
with low vision, including inverting the colors (in either RGB or HSL
space), applying gamma correction, converting to grayscale, and increasing
the contrast.
BUG=skia:6235
CQ_INCLUDE_TRYBOTS=skia.primary:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD
Change-Id: Icb8f3e290932d8bcd9387fb1f39dd20767e15cf6
Reviewed-on: https://skia-review.googlesource.com/7460
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
