Also noticed while trying to build GMs in WASM with
Bazel.
Change-Id: I33d467a0da0893c1a5e376f4fd1a6096dad48af3
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/459198
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Adds a type enum to WindowContext to determine which kind of
GPU context (GrDirectContext or skgpu::Context) we're using.
Bug: skia:12466
Change-Id: I288878740392a43cd9e82c925fbe2c372d140dc5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/454699
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
This CL just moves the files and renames them. It doesn't move them into the skgpu::v1 namespace.
Bug: skia:11837
Change-Id: Iab322d0dc5b5d1cfd32436785081539dc85c18d3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/440776
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Having this enum on GrTessellationPathRenderer forced it to be over-#included and was blocking making GrTessellationPathRenderer.h v1-only.
Bug: skia:11837
Change-Id: I80660ed659946d7aa555057c9f4fd1136b44cca0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/440536
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
I noticed Viewer lagging significantly when interacting with certain
sliders (such as transform state). It turns out that the UI tracking
would trigger calling Window::setRequestedDisplayParams and that in
turn can trigger a full context recreation, depending on backend.
I'd recently changed GPUs in my machine and apparently its context
creation is substantially slower than my previous one. Historically
I noticed minor jank when interacting, but it was never a deal
breaker.
This splits the parameter tracking into two categories so that lighter
weight widgets can still trigger window invalidation / re-rendering,
without triggering the context creation.
Change-Id: I3eb4c15b802f8b8ea8d8eca386de5dcee22ba9ec
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/437685
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Auto-Submit: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Since:
https://skia-review.googlesource.com/c/skia/+/431539 (Feed all top-level GPU accessors through skgpu::BaseDevice (take 2))
The OveridePaintFilterCanvas now blocks access to the true SurfaceDrawContext that backs the top device of a GPU-backed SkCanvas. This is because the SkPaintFilterCanvas doesn't pass on SkCanvas::topDevice calls to the canvas it is wrapping so it always returns a SkNoPixelsDevice.
Given that accessing the top SDC is an incredibly specialized testing-only feature this CL keeps the feature working short-term w/o gumming up the public API.
Change-Id: I99012ba34c2800e0149251667156b412c4e8aa63
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/433362
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
Creates a new path renderer, GrAtlasPathRenderer, that handles all the
atlasing. Managing the atlas in its own path renderer gives us more
control over when atlasing happens in the chain, will allow us to more
easily use the atlas in kCoverage mode, and makes the clipping code
cleaner.
Bug: skia:12258
Change-Id: Ie0b669974936c23895c8ab794e2d97206ed140f8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/431896
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
In a perfect world, this should always render the same, just perhaps a
bit more slowly.
Change-Id: I750ad43142d4d192be4db7396989d978025179a8
Bug: skia:12080
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/429101
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
This is a reland of 7bf6bc0d06
Original change's description:
> Purge ccpr
>
> Now that the clip atlas has been successfully migrated to
> tessellation, we don't need this code anymore!
>
> Change-Id: Ic97f50cff7c4ee59f4476f8410f0b30a32df4e90
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419857
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
Change-Id: If0be86902e7cc4755eba91a89be1ec1a6a4b54b2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419720
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
This reverts commit 7bf6bc0d06.
Reason for revert: Android build references kCoverageCounting
Original change's description:
> Purge ccpr
>
> Now that the clip atlas has been successfully migrated to
> tessellation, we don't need this code anymore!
>
> Change-Id: Ic97f50cff7c4ee59f4476f8410f0b30a32df4e90
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419857
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
TBR=robertphillips@google.com,brianosman@google.com,csmartdalton@google.com,michaelludwig@google.com
Change-Id: I01d99287978f848eb8bf900c07cba90ceb3b6edc
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419898
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Now that the clip atlas has been successfully migrated to
tessellation, we don't need this code anymore!
Change-Id: Ic97f50cff7c4ee59f4476f8410f0b30a32df4e90
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419857
Reviewed-by: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Skia has an atlas clipping mode (historically called CCPR clipping) that
doesn't quite work. It will fail on blend modes that require a dst read
and is also drawing the complexclip_* tests wrong on several devices.
We plan to rewrite the clip atlas, but in the meantime we need to
disable the "CCPR" clipping.
Bug: b/188794626
Change-Id: I126030a2a81057ffca85fd8b8e7db97b716451ab
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/408557
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Adlai Holler <adlai@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
This reverts commit 9230fc59b7.
Reason for revert: broke something in housekeeping docker build.
Original change's description:
> Add mskp player, use in viewer slide
>
> viewer now takes --mskps <dir> and will have a slide per mskp and
> overview slide (just like --skps).
>
> Player uses offscreen surfaces to draw offscreen layers, allows
> random access to mskp frames.
>
> slide just plays mskp at fixed frame rate (for now).
>
> Bug: skia:11900
> Change-Id: I66104ffe88f5df721a1a835570acc3e4c23c3f07
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/400537
> Commit-Queue: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Jim Van Verth <jvanverth@google.com>
TBR=jvanverth@google.com,bsalomon@google.com,nifong@google.com
Change-Id: I97fb7a64d5ef2ca14dba1cf9e2ba91ab0e9d0018
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:11900
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/402639
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
viewer now takes --mskps <dir> and will have a slide per mskp and
overview slide (just like --skps).
Player uses offscreen surfaces to draw offscreen layers, allows
random access to mskp frames.
slide just plays mskp at fixed frame rate (for now).
Bug: skia:11900
Change-Id: I66104ffe88f5df721a1a835570acc3e4c23c3f07
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/400537
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Mixed samples is no longer relevant for Ganesh. DMSAA and the new
Ganesh architecture both rely on full MSAA, and any platform where
mixed samples is supported will ultimately not use the old
architecture.
Change-Id: I5acc745010e090ef26310d92ec6240be2cd494cf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/399837
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Change-Id: Ic5192b072c98617dee85f28f8f4214c7a805a1fd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/397318
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
This code is not performance-sensitive, and there doesn't seem to be any
benefit to making it header-only.
Change-Id: Ic83be5cbb96f08c18a144954be7453aaabaa5a72
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/394900
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Currently doesn't do anything other than add new configs that set
a GrContextOption that becomes available in GrCaps. Runs new configs
on Perf/Test bots (MTL/iPhone11 and GL/Ubuntu).
Bug: skia:11844
Change-Id: I58586cae0980e52701abd1633dbc79b381f6015b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/394996
Reviewed-by: Eric Boren <borenet@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Previously, the Compiler optimization overrides only supported force-
disabling a particular behavior; we assumed that the default state of
a Compiler was to allow all optimizations. This assumption is about to
be invalidated, as the Inliner will soon be off by default unless you
are using GLES.
The override flags are now a tri-state; optimization and inlining can
be set to "default", "on" or "off".
Change-Id: I5637693222ca1de74ca1073c24d86c8e7c5026f6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/390136
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reland 188443be8d without the DMSAA bots
to ensure nothing else changes.
Original change's description:
> Add tooling support for dmsaa
>
> Adds a "fAlwaysAntiAlias" flag to GrContextOptions that can be set from
> tooling code. When dmsaa is set, SkGpuDevice draws everything
> antialiased. Adds new "gldmsaa" and "glesdmsaa" configs and creates bots
> to run them.
>
> Bug: skia:11396
> Change-Id: I165e89434b733f7b02312cea0e6649812528083b
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/384936
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
TBR=bsalomon@google.com
Bug: skia:11396
Change-Id: Icb45097e0a34543dc577fa32f19a692e90643a35
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/386338
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
This reverts commit 188443be8d.
Reason for revert: It looks like non-dmsaa bots might have been
affected. Let's land first without the new bots to make sure nothing
else changes.
Original change's description:
> Add tooling support for dmsaa
>
> Adds a "fAlwaysAntiAlias" flag to GrContextOptions that can be set from
> tooling code. When dmsaa is set, SkGpuDevice draws everything
> antialiased. Adds new "gldmsaa" and "glesdmsaa" configs and creates bots
> to run them.
>
> Bug: skia:11396
> Change-Id: I165e89434b733f7b02312cea0e6649812528083b
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/384936
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
TBR=bsalomon@google.com,csmartdalton@google.com,michaelludwig@google.com
Change-Id: Ib805b417ebd34d1fad79e0e1fe625765ee487f65
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:11396
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/386336
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Auto-Submit: Chris Dalton <csmartdalton@google.com>
Adds a "fAlwaysAntiAlias" flag to GrContextOptions that can be set from
tooling code. When dmsaa is set, SkGpuDevice draws everything
antialiased. Adds new "gldmsaa" and "glesdmsaa" configs and creates bots
to run them.
Bug: skia:11396
Change-Id: I165e89434b733f7b02312cea0e6649812528083b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/384936
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
We no longer derive a performance benefit from this pass in practice,
and it is a very expensive compilation step. It is also prone to fuzz-
related errors.
Doc: http://go/optimization-in-sksl
Change-Id: Ief08ffac659a8fe7fe92c92b9a5da14c9f713bc2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/381261
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
This lets us see at a glance what each optimization pass contributes to
our final compiled SkSL output.
Change-Id: I52c56c92c408eee34045c5e6f60298cf9548ff5d
Bug: skia:11319
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/381257
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
This gives Viewer a way to dynamically toggle CFA off and on, so we can
immediately see the impact on shader optimization.
Change-Id: I912df70de126a74a1f0d11c511b2acc64f1e9f28
Bug: skia:11319
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/380456
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
- Added "Dump Shaders" button; this writes the shaders to disk in the
`/resources/sksl` directory. This will allow us to more easily check
real-world shader code generation, instead of synthetic examples.
- Renamed "Load" and "Save" to "View" and "Apply Changes," to clarify
that they are not about files on disk. (Otherwise they seemed
confusing when placed next to a Dump Shaders button.)
Also, fixed a bug which would prevent a new deferred action from being
registered while running deferred actions.
(This CL implements the "test real-world shaders" portion of
http://go/optimization-in-sksl)
Change-Id: I7626a9e9c4f3ecb31b51f29b8106e4ca55de4dd4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/380317
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
This is a reland of bbbf1a7f50
Original change's description:
> Redesign program key construction
>
> This does two things:
> 1) Moves responsibility for bit-packing portions of the key into the key
> itself. A new GrKeyBuilder type manages adding bits, with asserts to
> ensure a value always fits in the requested number. In theory this
> will let us generate smaller keys overall, at the expense of slightly
> more complex code during construction.
> 2) Adds a string label parameter for key methods that fold in data. For
> new methods, the label is required. To ease migration, the old add32
> does not require a label (yet). This will let us generate detailed,
> human readable keys, either based on SK_DEBUG, or a runtime option
> (if we're comfortable paying the cost).
>
> Bug: skia:11372
> Change-Id: Ib0f941551e0dbadabbd2a7de912b00e9e766b166
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/377876
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
Bug: skia:11372
Cq-Include-Trybots: luci.skia.skia.primary:Test-Win10-MSVC-Golo-GPU-QuadroP400-x86_64-Debug-All-Vulkan
Change-Id: I179ed581bc9ba772191e727274ac0ac6979ebdf3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/378778
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This reverts commit bbbf1a7f50.
Reason for revert: D3D Failures
Original change's description:
> Redesign program key construction
>
> This does two things:
> 1) Moves responsibility for bit-packing portions of the key into the key
> itself. A new GrKeyBuilder type manages adding bits, with asserts to
> ensure a value always fits in the requested number. In theory this
> will let us generate smaller keys overall, at the expense of slightly
> more complex code during construction.
> 2) Adds a string label parameter for key methods that fold in data. For
> new methods, the label is required. To ease migration, the old add32
> does not require a label (yet). This will let us generate detailed,
> human readable keys, either based on SK_DEBUG, or a runtime option
> (if we're comfortable paying the cost).
>
> Bug: skia:11372
> Change-Id: Ib0f941551e0dbadabbd2a7de912b00e9e766b166
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/377876
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
TBR=bsalomon@google.com,robertphillips@google.com,brianosman@google.com
Change-Id: I7bfb20905c87083e84a1ea21bc53d63e882e2c68
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:11372
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/378777
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This does two things:
1) Moves responsibility for bit-packing portions of the key into the key
itself. A new GrKeyBuilder type manages adding bits, with asserts to
ensure a value always fits in the requested number. In theory this
will let us generate smaller keys overall, at the expense of slightly
more complex code during construction.
2) Adds a string label parameter for key methods that fold in data. For
new methods, the label is required. To ease migration, the old add32
does not require a label (yet). This will let us generate detailed,
human readable keys, either based on SK_DEBUG, or a runtime option
(if we're comfortable paying the cost).
Bug: skia:11372
Change-Id: Ib0f941551e0dbadabbd2a7de912b00e9e766b166
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/377876
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
This will allow users to create PDFs with the actual text embedded. This
will allow for correct search and copy operations on the generated PDF.
Since these are now public, SkTextBlobBuilderPriv is no longer needed
and is removed. For consistency, the allocRunRSXform overload is renamed
to allocRunTextRSXform.
Change-Id: I44be82d9038a433e1221d5cbfd8ed113ecb6d4fa
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/375017
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
The 'lang' was never stored or used, so this makes no current practical
difference. The original intent was to be able to specify a language so
that it could be emitted as a 'Lang' override in the 'ActualText' when
generating a PDF. However, due to the way 'ActualText' is generally used
this would be impractical. If there is ever a desire to mark up sections
of the PDF with a specific language it would be better handled in a
different way.
Change-Id: Id63596190235fc45ce17249b9b578b6f9b838b2b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/375060
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
The Viewer status box 's' is quite small on high resolution displays.
The 'u' key doubles its size and has been used as a work-around, but
let the status box scale take the backing scale into account.
Change-Id: I98db37a4ed86698ba7c02666478dff248ff6daae
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/374377
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Create an actual hairline path instead of a filled path. Allow metric
and image generation for glyphs to handle hairlines in the event a color
glyph has an outline and a hairline is needed. This also fixes glyph
bounds issues with path based glyphs drawn with hairlines.
Stroke+Fill is not handled very well, but is currently being deprecated
and so given less weight. It works, but is somewhat arbitrary.
Also add more paint overrides to Viewer.
Note that this only adds hairline handling for backup purposes. The code
in SkStrikeSpec::ShouldDrawAsPath which causes most harline glyphs to be
drawn directly from paths is not changed.
Change-Id: Icfadcd818d20b2557e4703c8e99d6d7dd0b4af70
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/368156
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Prior to this change Viewer would crash in debug or act quite strangely
in release when attempting to filter any RSXForm blobs. This adds the
ability to allocate an RSXForm run and directly query the number of
positioning scalers per glyph it contains.
Change-Id: I90e118102a0f4d535e97026eecad9ac2f70e448f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/367957
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
This change treats all slides as being in units of points (not pixels).
Window dimensions are communicated to slides in terms of points. This
allows slides which use the window dimensions for scaling to remain in
the same unit space as the gms. Allowing thh slides to also know the
actual pixel dimensions is left for later (this may be wanted when
testing proper selection of bitmap resources).
This also splits the backing scale from the zoom factor. The backing
scale is allowed to be toggled by the user. This allows for easy
reproduction at nominal size. When the backing scale is turned off the
points and the pixels are the same size. Slides which use the window
dimensions for scaling have the backing scale moved from the Viewer
transform to the window dimensions which are reported in pixels
(which are equal to points) when the backing scale is turned off.
Change-Id: Id288c4d8664a0a0972f1171a6159101c2b4ae90f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/364018
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
The macOS view system is in "big pixel" units, so translate these
into "physical pixel" units.
To compensate, add sk_app::Window::scaleFactor() which returns the
scale factor. The viewer app is modified to apply the inverse of
this scale factor to the current zoom level.
Change-Id: I4fac066a230c87793fc5a0e5a582d60d25e46e7b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/361558
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
