Add support for external precomp Skottie layers. This allows embedders
to seamlessly mix custom/Lottie content.
General flow:
* embedders register a PrecompInterceptor callback with
the animation builder
* at build time, Skottie invokes the callback for each pre-composed
layer
- the returned ExternalLayer implementation is used instead of the
Lottie layer payload
- (a nullptr value signals Skottie to use the usual Lottie payload)
* at render time, ExternalLayer::render() is called to defer content
rendering to the embedder
Also implement a sample PrecompInterceptor which attempts to substitute
precmp layers matching a given pattern with external Lottie animations:
precomp_name: "__foo.json" -> Animation("foo.json")
This new mechanism is a generalization of (and supersedes) the old
NestedAnimation hack - so we can remove that.
Change-Id: Id80fe11881c62b8717c2476117c7c03ad5300eef
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/288130
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Implement non-linear contrast using a cubic polynomial approximation,
as a SkRuntimeEffect.
The effect range is significantly more constrained than the legacy
version: https://www.desmos.com/calculator/ehem0vy3ft
Change-Id: I86bdbb9cc0d30065780f87705d2d4d39385609cb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/285840
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Implement drop and inner shadow styles using explicit image filters.
Remove existing style support from DropShadowEffect.cpp, as it now
has a new cozy place with its inner sibling.
Supported properties:
- color
- opacity
- angle
- distance
- size (sigma)
Change-Id: I5b7e3c75678e036a20c1908b84c74a670a5aa196
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/283918
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
In inverted mode (Mode::kInverted), the trim result represents the
logical segment [stop..start] (wrapping around at the path's end).
We currently emit two segments [0..start] and [stop..1], in that
exact order. This behavior breaks continuity for single closed
contour paths.
Update SkTrimPath to
1) emit the segments in the correct order ([stop..1],[0..start])
2) skip the connecting moveTo for closed paths
Bug: skia:10107
Change-Id: Icd280554ba7291c985f504793feff104df2a4a99
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281882
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Note: works for well-formed poly-to-poly (perspective) transforms, but
doesn't support AE's degenerate corners semantics (concave/inverted
polys) at this point.
Bug: skia:10100
Change-Id: I5b3492b008302495b616867c139c6e5ad6dc57df
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281595
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Plumb layer style parsing, and extend existing DropShadowAdapter to
support both drop shadow style and drop shadow effect.
Change-Id: Id99a419dacd06dc38dc4cf84ff4ecb92218c45f7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/279020
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Implement all AE grouping modes: character/word/line/all.
-- character grouping was already supported (default mode)
-- for word and line grouping, expand the existing domain mapping logic
to also track cumulative advance and max(ascent) per span, then use
this info to compute anchor point boxes
-- for "all" grouping, the anchor point box coincides with the text box
(https://helpx.adobe.com/after-effects/using/animating-text.html#text_anchor_point_properties)
TBR=
Change-Id: I8564f1349d167d82c31862d8f7e57615cdae0dcf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/274201
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
In adition to transforms/opacity/etc, text animators can target
per-glyph opacity.
Change-Id: I6ab63a6e49a64beaf63fc955f0b672a5b8ba84ba
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/272886
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
When per-character 3D is enabled, text properties can be animated in
3 dimensions.
- position and scale become 3-value vectors
- in addition to existing "r" (really rz), rotation gains "rx" and "ry"
- instead of specializing for 3D, expand the existing structures to
handle both 3D and 2D modes
- also ensure that sksg::Transform does not flatten to SkMatrix
Change-Id: I426a7ee1ff38c1702deb85e9f1db80f6069f36d6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/272648
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
AE discards lines with baselines outside the paragraph box.
This aligns Skottie's behavior with AE for default/top-alignment
(but not for any of the custom vertical alignment modes).
Bug: skia:9933
Change-Id: Id0318f0744bf89580774e89494faf19bfb6f6d14
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/272376
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Similar to existing ADBE Easy Levels2, but provides separate mapping
controls per channel.
Change-Id: Ibc58c58e1e8cb8793d6eb819998c1804ccbbf859
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/268936
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Also fix a couple of custom props issues:
- solid layer colors were not dispatched
- text values were not sync'ed
TBR=
Change-Id: I827f8c1d8c8bb73b03f05de15e1c7c96753a631e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/264936
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Currently, we treat track matte source layers (tagged with td:1) as single-shot mask triggers:
we apply once to the following layer, then move on.
But track mattes can cascade: a layer with a matte can itself be applied as a track matte for the
following layer.
Also, for matte/masking purposes, only the layer content is being considered (ignoring blend mode
and any masks applied to the matte itself).
To support this, refactor the layer attachment code:
- instead of tracking the presence of a single-shot matte source, always track
previous layer content trees
- instead of triggering matte attachment in the presence of a matte source, trigger based on
the matte *target* property (tt: X)
- log errors on unknown matte modes
Change-Id: I6c71d4007e1e27d3f3a139344bbf367d7bc6e29d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259820
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Precomp layers can have a different size vs. main composition.
Instead of relying on the global animation (main comp) size, use the
current (pre)comp size when setting up cameras.
Change-Id: I54106375fb39dde2bfd11e14a38e5ec3e7190764
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/258156
Commit-Queue: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
So far Skottie has been assuming all cameras are two-node (have a point
of interest).
AE also supports one-node cameras, where the camera does not auto-orient
towards a POI but starts off perpendicular to the z == 0 plane.
(https://helpx.adobe.com/after-effects/how-to/camera-animation.html)
Change-Id: Id565de7d8feb9a762940ac372c1bbbcce2e2dfc6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/254559
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Refactor as a single interpolating loop, based on careful selection
of lerp coefficients.
Change-Id: I58786cddb2f042b53dcbac80c2346736429be102
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/252858
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Observed AE layer parenting semantics:
* layers are flagged as either 2D or 3D
* camera applies to 3D layers, but not to 2D layers
* parented 3D layers treat their ancestor transform chain as 3D (SkMatrix44)
* parented 2D layers treat their ancestor transform chain as 2D (SkMatrix, ignoring 3D components)
This means that for a given layer, we may need to build two distinct transform chains - depending
on the type of descendant layer being considered.
Furthermore, transforms are animatable and their animators are scoped to a layer controller. Since
we're potentially building two version of the transform node, we need to ensure all animators for
both of them are transferred to controller object (we still want to only instantiate a single layer
controller and render tree to avoid duplication). IOW, all dependent layer transforms need to be
considered before "sealing off" a given layer controller.
In order to avoid a layer dependency/topological sort, we can split off the transform tree
construction into a separate pass. High-level changes:
-- replace existing LayerAttachContext with CompositionBuilder
(holds LayerBuilders and other Composition-wide state)
-- replace LayerRec with LayerBuilder
(holds Layer-wide state and also caches transform nodes)
-- pass 1: for each LayerBuilder, transitively build and cache a transform chain
of a type (2d/3d) determined by the leaf (entry point) layer
-- pass 2: for each LayerBuilder, build the actual layer content render tree
and instantiate the layer controller objects
Bug: skia:8914
Change-Id: I9f7efcf4819424282fd3dda98f5621ba12fd001b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/251001
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
We're currently letting render context overrides (opacity, color
filters, blend mode, etc) spill down the descendent/mask content
tree.
This is not ideal, as mask content isolation breaks atomicity
assumptions for deferred overrides. Case in point: motion blur uses
SkBlendMode::kPlus to accumulate content "layers" - but since mask
content gets rendered into a separate layer, it fails to produce the
expected result.
The fix is to realize all context overrides on the top-level mask layer
(we already allocate this layer, so there's no reason to defer
downstream anyway).
Change-Id: Icbb7e403f90feecfae5846697f559a03d8aa4097
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/239036
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Introduce a new hybrid valign extension, kVisualDownscaleToFit (sk_vj: 4):
- when the text shaped at the requested size fits within the box,
center vertically (same as kVisualCenter)
- otherwise, scale down until it fits (same as kVisualResizeToFit)
Change-Id: I8e096a49e2b87582e1bd42161657ec4ef561ebdf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/235601
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Due to limitations in BodyMovin/AE JSX, full effect data is not
available (specifically the "channel range" property).
We only support static master hue, static master saturation and
static master lightness at this point.
This CL also introduces a new animation builder pattern:
DiscardableAdapterBase and attachDiscardableAdapter().
The former is a base class for adapters with full animator ownership.
This enables a) capturing raw adapter pointers in animator lambdas and
b) syncing to SG only once, after all local animators are updated).
The latter is a helper for managing adapter creation and optional
destruction (when all adapter properties are static we can discard it).
Change-Id: Iecc4b78830e5464e7958cb12cdfd75a61010aa25
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/231956
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Unlike all other Skottie effects, motion blur requires sampling at multiple
points on the timeline.
To support this:
1) Introduce MotionBlurEffect - a custom SG render node which can drive
the timeline of its subtree using an sksg::Animator.
2) Introduce MotionBlurController to swap for a regular LayerController
when needed. MotionBlurController dispatches time ticks to
MotionBlurEffect instead of directly to the layer animators.
The actual motion blur impl is based on
https://skia-review.googlesource.com/c/skia/+/221416.
Motion blur requires Lottie files exported with this BodyMovin patch:
https://github.com/bodymovin/bodymovin-extension/pull/15
Change-Id: I075e101ea91ec9aa300bac35ee810fd539f1aced
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/225416
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
We used to rely solely on visual bounds for vertical alignment. That
had the downside of leading/trailing empty lines being ignored.
Then https://skia-review.googlesource.com/c/skia/+/220916 switched to
using typographical bounds. This approach produces results in line
with AE, but allows some glyphs to overflow the alignment boundary.
This CL introduces a hybrid approach:
1) for standard AE text alignment, continue to use typographical bounds
2) for Skottie VAlign extensions (sk_vj), use the union of typographical
and visual bounds - this should mitigate both issues mentioned above
Change-Id: Ifd3ccae3d721728ce67942206160ebe92056d3a2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/224188
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Avinash Parchuri <aparchur@google.com>
Implement radial wipe with a sweep gradient shader mask filter.
The implementation is slightly convoluted because edge feathering requires a real blur, which in turn requires content layer isolation.
So there are two distinct operation modes:
- no feather -> draw the content directly into the dest buffer, with the mask filter
deferred in SG context
- feather -> draw the content into a separate layer, then blend (dstOut) the composed
blur+shader mask on top
Change-Id: I253701aff42db8010ce463762252c262e2c5d92b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/222596
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
The motion tile phase is a one-dimensional shift, applied to every other
row or column (based on a selector property).
Implement using a masking shader (covering the static rows/cols),
and blend mode shader composition (srcIn for static/pass-through
rows/cols, and srcOut for phased rows/cols).
TBR=
Change-Id: I336c150e5d4900962dc2de801a4e1572cf4b5d59
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/221339
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Yet another way to transform a layer, disguised as a distort effect.
TBR=
Change-Id: Ic2d5479fa6ae27b460de60875924f73f77fc7f71
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/221001
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Add logic to adjust glyph positions based on animated tracking properties.
This adjustment is applied post-shaping (it doesn't observe the text box),
and requires line re-alignment - thus it is being processed per-line.
Change-Id: Id44a295032a48c7216f126cb02dd2d2d5cc18ae3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/220076
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Range selector's "Based On" property controls how range indices map
to glyphs: characters, characters-excluding-spaces, words, lines.
To support this feature:
- update SkottieShaper to track domain-relevant info per fragment
(fLineIndex, fIsWhitespace)
- update TextAdapter to build domain maps
(domain index -> fragment span)
- update RangeSelector to run its range indices through a domain map,
if present.
Change-Id: I80e713f6beaa2578aa0eae1d1ddae8e1e47d8d10
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/219859
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
The current implementation applies constant coverage (outside selector
range) based on computed integral edges.
But the integral range is clamped to the valid index domain and its
extremes are always assumed to have partial coverage - so we never get
to constant-blit the full buffer when the interval is outside, which
can yield incorrect coverage for the first/last fragments.
Update the constant coverage logic to operate in full domain coordinates.
Change-Id: I23902674fe5e822081fb8262167511df1cc3463e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/219206
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Introduce square/ramp/triangle/round/smooth shape generators,
and use them to seed the range selector coverage pipeline.
Change-Id: Ib7b94ceecd2ccf66820f4dd2443fdd62e2ac6a1b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218828
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
Each animator can have multiple range selectors, whose combined "coverage"
modulates how the animator props compose with other/initial props.
Since there can be multiple animators with different/arbitrary selectors,
we compute independent property values for each fragment.
Supported features:
- start, end, offset, amount
- units: percentage, index
- based-on: characters-only for now
- mode: add-only for now
- shape: square-only for now
Change-Id: If7fee46ffb29e1f92542822481ed699fd0b0b521
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218076
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
