Spread/choke operates as a compression of the alpha channel towards the
low bits.
Change-Id: I82aec1321b60f7f75a79e8280e761d4629f6c923
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/305183
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
Change-Id: Ic44e24057b95bb014504f02a736fb4341afc8971
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/304856
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Assorted bugfixes for the non-analytical mask code path.
1) SkSG modulatePaint() should only override the blend mode when
one is specified (!= kSrcOver).
2) Some modes (notably intersect) require touching pixels outside the
mask draw geometry. These modes must be applied as a layer.
Introduce an explicit layer node in SkSG, and inject for masks which
require it.
Also refactor Subtract to use more natural blend and pathops modes,
instead of always inverting geometry.
TBR=
Change-Id: I412168d1ff61eb8e59907babe8f0e091f6fffacf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/303997
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
Difference [1]:
The mask is added to the masks above it in the stacking order. In
areas where the mask does not overlap the masks above it, the mask
operates as it would alone on the layer. In areas where the mask
overlaps the masks above it, the influence of the mask is subtracted
from the masks above it.
^ sure sounds like XOR
[1] https://helpx.adobe.com/after-effects/using/alpha-channels-masks-mattes.html#mask_modes
Bug: skia:10502
TBR=
Change-Id: I8aea937224cfadce54c4fc1d014b63d00efdbec4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/303025
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
AE appears to use the center of the shape bounding box.
TBR=
Change-Id: I965175dcc28cc9a8903b959a42b108d72767ef28
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/302639
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
Observed semantics:
-- operates on cubic Bezier path representation
-- moves vertices towards the shape center, and control points in the
opposite direction, based on the specified amount
-- the center is determined as the vertex average
-- the amount is specified as a fraction of the transition to center
(0 -> noop, 1 -> fully collapesed to center)
-- negative and extranormal amount values are allowed
(invert direction/extrapolate)
TBR=
Change-Id: I7da81a5fe5cffd0e50bd94e6b448565b0b04ed86
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/301582
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
AE allows selecting the paint order when both fill & stroke are present.
The CL also fixes some text stroke issues: stroke width not parsed
correctly and not actually used on the paint.
Change-Id: Iec27bb65d09f689365e43b801d3844106780572b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/301857
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Two issues:
1) For static keyframes (start_value == end_value) AE yields horizontal
orientation (0 tangent). We technically have the same logic in
Skottie, but our value deduplication logic interferes: the two
consecutive equal values are consolidated, and the result ends up
holding the spatial lerp info for the next frame => our hold frames
auto-orient for the beginning of the next keyframe.
Fix: skip value deduplication when spatial lerp is present.
2) The very last keyframe is always static and holds no spatial info.
AE retains the orientation of the previous frame, but Skottie yields
0 tangent.
Fix: the easiest way to accomplish AE semantics is to detect when
we're dealing with the last keyframe, and swap with the previous
keyframe with an adjust weight of 1 (to select the end value). This
produces the same lerp result (because keyframed values are always
contiguous) and also respects the orientation of the prev frame.
TBR=
Change-Id: Id661f7804533e95b747722457489a7ef759572a4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/301176
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Unlike other shape path effects, merge paths disables the rendering of
any preceding paints - it only extracts the merged geometry from the
stack.
Update the shape layer attacher logic to suppress paints under merge
paths.
TBR=
Change-Id: I414134839de9eaa4b0f828d8dc6d4721620242bb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/300897
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Based on SkPathOps for now.
Change-Id: Id27c8a235cbd4ab5083735b67cf5d2635ee16cfc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/300497
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Mike Reed <reed@google.com>
AE allows animating the line spacing text property [1].
Observed semantics:
- spacing is applied as an offset to all fragments in a line
- for selector/partial coverage, the spacing for a given line
is the average of the computed spacing for each fragment
- spacing is cumulative (applies to all lines following)
Plumb the new animator prop ("ls") and expand the existing line
tracking logic to also apply computed spacing offsets.
(also requires a Bodymovin update to export the line spacing property)
[1] https://helpx.adobe.com/after-effects/using/animating-text.html#text_animator_properties
Change-Id: I5517acea8dbc1b2fbae09cb0874f1e53cd2acb90
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/300377
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Dash, trim, round, transform and upcoming offset have a lot in common.
Introduce a GeometryEffect base class to consolidate.
TBR=
Change-Id: Ib5556e6ebe416685c624d53ba8591e118aa4f0d6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/300496
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Two issues:
1) mask shaders are ignored of drawImage; force application via a layer
2) visibility control clashes with layer controller; force a
transparent shader for now
TBR=
Change-Id: Ic9a86c87db043745fa9f829ef36706525570a3be
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/299874
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
This reverts commit 6499e7fb4c.
Reason for revert: G3 roll
Original change's description:
> [skottie] skottie_tool updates
>
> 1) plumb a precomp interceptor to support nested animations, following
> the same naming pattern as viewer and dm
>
> 2) clear background with white instead of transparent, to match other
> tools
>
> TBR=
> Change-Id: Ic1d1f8c6493a3ca98a9b75f5e2aa2230a46f54d9
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/298139
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Commit-Queue: Florin Malita <fmalita@google.com>
TBR=fmalita@chromium.org,fmalita@google.com
Change-Id: Ibd320e9f7f30004e80ff4d2b2012a18703910842
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/298337
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
1) plumb a precomp interceptor to support nested animations, following
the same naming pattern as viewer and dm
2) clear background with white instead of transparent, to match other
tools
TBR=
Change-Id: Ic1d1f8c6493a3ca98a9b75f5e2aa2230a46f54d9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/298139
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@google.com>
Some clients already have SkTypeface objects, and forcing them to pass
these as SkData is awkward - especially since Skottie immediately turns
them into SkTypeface again.
Replace the existing loadFont() callback with loadTypeface().
(for compatibility, we try both for now, but the plan is to phase-out
loadFont)
Change-Id: Ib4c2446a96cb6a5f95581c405d0a1b4ecff7ddb2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/296718
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
Forward declaration for PropertyObserver should work, but some G3
builds/configs are barfing...
TBR=
Change-Id: I47fc8d24d4e706df470c010c8fce13f07d726fd8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/293340
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
AE layers can be tagged for auto-orient - i.e. they observe an
additional rotation component dependent on the position property
animation (position derivative/tangent).
Augment Vec2KeyframeAnimator to optionally track orientation, for both
temporal/linear and spatial (motion-path) keyframes. Update
TransformAdapter2D to use this orientation when attached to layer
transforms.
Change-Id: I616e45a07b088e9e566b4f88450e95f9315b727c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/291716
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Instead of plumbing the target value through bindImpl as an opaque
void*, store explicitly in builders.
More typesafe/elegant/flexible/etc.
TBR=
Change-Id: Ie28787072a6be3b0bfcd528b68431f9fb3fa3a71
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/291576
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
This reverts commit c80ee456ad.
fix: update flutter's gn file to add guard
Change-Id: Iac5171c8475d9a862d06255dab1c6f38f10de2f2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/291361
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Parse embedded fonts into SkCustomTypefaces, and pass down the text
animation pipeline. Things seem to mostly work for Latin examples.
Most existing Lottie files come with embedded fonts (the option is
enabled by default), so to minimize disruption only use the new
feature as a fallback for typefaces which cannot be resolved otherwise.
Also introduce a builder flag to prioritize embedded fonts over native
(kPreferEmbeddedFonts), and plumb in existing tools for testing.
Change-Id: Ia2a659f76e354fea6081b0f2e0dce1d8bdf63c52
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/291180
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
Replace with a stateful LazyHandle implementation.
A secondaty objective is to preserve source-level API compat for
existing clients.
TBR=
Change-Id: I8e37b1e045a94d657996b7002e89cedb5b9d128f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/288816
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
The main value of current AnimationBuilder::attachAssetRef is to provide
scoping semantics for ref cycle detection.
Refactor using a RAII helper (ScopedAssetRef), and avoid std::function
callbacks.
Change-Id: Idf5327465b8a06313cd9ea89be5f229ddc0aef7f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/288617
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
...since it's used for both image and video Lottie layers.
TBR=
Change-Id: I52e85d70d4adbda61dfa3b33acdf4eb17ddbf332
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/288616
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
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 a VideoAsset wrapper, used for Skottie video layers. This
requires a non-testlib build target for SkVideoDecoder, hence a
dedicated BUILD.gn.
Add software conversion fallback for SkVideoDecoder, using libswscale.
Change-Id: I80dd555a1241081e50ee4834b64ad3518948a0f1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/285378
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Bodymovin exports video layers similar to image layers, but assigns a
dedicated type id.
Since Skottie's ImageAsset interface already supports multi-frame
images, we can reuse the same mechanism for video.
Also, since we're adding sparse layer type handlers, we can now
fill all known Lottie layer enums and simplify the handling of camera
layers.
Change-Id: Ide6c6b3566d48f90f36f0143eaea7c62bbdedb2c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/285106
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
It's fine to allow -/+ inf because we immediately clamp to 0/1.
Fixed: oss-fuzz:15927
Change-Id: Ic9c866e78c9b79ea2055d2dbf403c26b29031622
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/284481
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Auto-Submit: Florin Malita <fmalita@chromium.org>
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>
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>
Change-Id: I2d19c4f0ff1439dcd923a3064eb3ba78432a5113
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281043
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Lottie shapes (paths) are expressed as a sequence of vertices, where
each vertex has a
- position
- in-tangent control point (relative to position)
- out-tangent control point (relative to position)
A nice property of this representation, is that interpolation can be
performed independently on each scalar component.
This seems really close to what VectorAnimator is good at - so can we
shoe-horn shapes into vectors and drop the ShapeValue KeyframeAnimator
specialization? Yes, we can!
To support the conversion, we need to abstract out two aspects of the
VectorKeyframeAnimator builder:
- parsing the encoding length of a vector-representable object
- parsing the actual encoding data of a vector-representable object
(For current/regular vector values, the encoding length is the same as
the json array length, and the encoding data is just the array of json
numbers.)
Shapes are encoded as a sequence of 6 floats per vertex, plus an
additional/trailing boolean maker for the "closed shape" property:
[v0.posX, v0.posY, v0.inX, v0.inY, v0.outX, v0.outY, ..., closed_flag ]
(thus encoding_len == 6 * vertex_count + 1)
After we're done with parsing, animation/interpolation is handled
via existing VectorKeyframeAnimator - so we can remove
KeyframeAnimator<ShapeValue>.
Converting to SkPath is pretty much the same as for the previous
representation, except the input is now flattened.
Change-Id: I822797fceae561b52b709bf258163bbcc6b565fb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/280898
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
