This adds a new "Particles" slide to viewer, that allows
editing, loading, and saving particle effects. All of the
particle system code is in modules/particles.
There are many rough edges and some not-yet-finished changes
to generalize the model[1]. A rough overview:
- SkReflected.h implements a lightweight reflection system
for classes derived from SkReflected. Adding a new class
involves deriving from SkReflected, adding a macro to the
class declaration, and implementing visitFields(), which
simply calls a virtual on an SkFieldVisitor for each field.
Currently, emitters and affectors use this mechanism.
- SkParticleSerialization.h demonstrates two useful field
visitors - for serializing to and from JSON. The driver
code that uses those is directly in ParticlesSlide.
- SkParticleData.h and SkCurve.h define a variety of helper
types for talking about particles, both for parameterizing
individual values, and communicating about the state of a
particle among the effect, affectors, and emitters.
- SkParticleEffect.h defines the static data definition of
an effect (SkParticleEffectParams), as well as a running
instance of an effect (SkParticleEffect). The effect has
simple update() and draw() methods.
- ParticlesSlide.cpp adds a third field visitor to generate
GUIs for interactively editing the running effect.
---
1: The critical change I'd like to make is to remove all
special case behavior over time and at spawn (setting sprite
frames, size over time, color over time, etc...). Integration
is the only fixed function behavior. Everything else is driven
by two lists of affectors. One is applied at spawn time, using
the effect's lifetime to evaluate curves. This allows spawning
particles with different colors as the effect ages out, for
example. The second list is applied every frame to update
existing particles, and is driven by the particle's lifetime.
This allows particles to change color after being spawned, for
example.
With a small set of affectors using a single expressive curve
primitive (keyframed list of cubic curve segments), we can
have affectors that update color, size, velocity, position,
sprite frame, etc., and implement many complex behaviors.
Bug: skia:
Change-Id: Id9402bef22825d55d021c5a2f9e5e41791aabaf4
Reviewed-on: https://skia-review.googlesource.com/c/181404
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Bug: skia:8461
According to skbug.com/7069, we should allow GIFs to use a transparent
index outside of the range of the color table. Add a test to verify
support for this.
The GIF is 2x2 with the following pixels:
-------------------------------------------------
| black | white |
-------------------------------------------------
| transparent | transparent |
-------------------------------------------------
The color table only has 2 entries (black and white), and the
transparent index is 2.
Change-Id: I16574a61e2982b6628c3eca96cb7b3e1f57d3b2a
Reviewed-on: https://skia-review.googlesource.com/c/161561
Reviewed-by: Nigel Tao <nigeltao@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
Auto-Submit: Leon Scroggins <scroggo@google.com>
Extend the image asset provider API to support animated/multi-frame images.
Add a GM based on SkAnimCodecPlayer + animated public domain GIF
(source: https://giphy.com/explore/public-domain).
Bug: skia:
Change-Id: Iaa596e01a7626ca6574db1ebc90632f5a9a02bdc
Reviewed-on: https://skia-review.googlesource.com/159162
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
This reverts commit 49894f450f.
Reason for revert: Breaking a CTS test on the Android roll:
java.lang.AssertionError: expected:<67043583> but was:<50266367>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:834)
at org.junit.Assert.assertEquals(Assert.java:645)
at org.junit.Assert.assertEquals(Assert.java:631)
at android.graphics.cts.BitmapColorSpaceTest.verifyGetPixel(BitmapColorSpaceTest.java:301)
at android.graphics.cts.BitmapColorSpaceTest.inColorSpaceP3ToSRGB(BitmapColorSpaceTest.java:612)
Expected: 3FF00FF Actual: 2FF00FF
Original change's description:
> Reland "Switch SkCodec to use skcms" plus fixes
>
> This reverts commit 33d5394d08,
> relanding 81886e8f94 as well as
> "Fix CMYK handling in JPEG codec" (commit
> f8ae5ce20c)
>
> Add a test based on the CTS test that failed in the original commit.
> purple-displayprofile.png is the image used in the CTS test, with the
> Android license.
>
> This also adds a fix for SkAndroidCodec, ensuring that we continue to
> use a wide gamut SkColorSpace for images that do not have a numerical
> transfer function and have a wide gamut. This includes a test, with
> wide-gamut.png, which was created with Photoshop and the profile
> "sRGB_Calibrated_Homogeneous.icc" from the skcms tree.
>
> Bug: skia:6839
> Bug: skia:8052
> Bug: skia:8278
>
> TBR=djsollen@google.com
> As with the original, no API change
>
> Change-Id: I4e5bba6a3151f9dc6491e8eda73d4de0535bd692
> Reviewed-on: https://skia-review.googlesource.com/149043
> Commit-Queue: Leon Scroggins <scroggo@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>
> Reviewed-by: Leon Scroggins <scroggo@google.com>
TBR=djsollen@google.com,mtklein@google.com,scroggo@google.com,brianosman@google.com
Change-Id: Ie71e1fecc26de8225d2fe603765c1e1e0d738634
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:6839, skia:8052, skia:8278
Reviewed-on: https://skia-review.googlesource.com/149262
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
This reverts commit 33d5394d08,
relanding 81886e8f94 as well as
"Fix CMYK handling in JPEG codec" (commit
f8ae5ce20c)
Add a test based on the CTS test that failed in the original commit.
purple-displayprofile.png is the image used in the CTS test, with the
Android license.
This also adds a fix for SkAndroidCodec, ensuring that we continue to
use a wide gamut SkColorSpace for images that do not have a numerical
transfer function and have a wide gamut. This includes a test, with
wide-gamut.png, which was created with Photoshop and the profile
"sRGB_Calibrated_Homogeneous.icc" from the skcms tree.
Bug: skia:6839
Bug: skia:8052
Bug: skia:8278
TBR=djsollen@google.com
As with the original, no API change
Change-Id: I4e5bba6a3151f9dc6491e8eda73d4de0535bd692
Reviewed-on: https://skia-review.googlesource.com/149043
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
This reverts commit 81886e8f94 and
f8ae5ce20c
("Fix CMYK handling in JPEG codec")
This fixes the Android build, which was failing a CTS test with this
change.
Bug: skia:6839
Bug: skia:8052
TBR=djsollen@google.com
As with the original, no API change
Change-Id: Ic744a610e9f431707f871de44f9f64040bc60d14
Reviewed-on: https://skia-review.googlesource.com/148810
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
Bug: skia:6839
Bug: skia:8052
Create an skcms_Profile instead of an SkColorSpace when creating an
SkCodec. Eventually we'll move the SkImageInfo (and its SkColorSpace)
entirely to clients (e.g. SkAndroidCodec, SkCodecImageGenerator), but
for now, create it with SkEncodedInfo::makeImageInfo.
Create new SkEncodedInfo::Colors for the special PNG cases that we
want to map to specific SkColorTypes.
SkEncodedInfo:
- Add ICCProfile, which owns an skcms_ICCProfile
- FIXME: maybe we should have a single instance for
SRGB like SkColorSpace?
- Add kXAlpha_Color, for kAlpha_8. Since I'm not longer creating
an SkImageInfo (at least in SkPngCodec), it needs a way to pass
this info to the caller.
- Add k565_Color, for the same reason. Matt originally had this in
https://codereview.chromium.org/2212563003/#ps120001, but didn't
land that version. I like it though. Mike didn't like the bits
per component for 565, but it seems like a sensible hack, much
like the existing one for kAlpha_8
- Add width and height. These were removed for redundancy with
SkImageInfo, but it makes sense to have them here without it.
BUILD.gn:
- Build the new SkEncodedInfo.cpp
SkCodec:
- Remove the constructor with an SkImageInfo. Edit the other one
to drop width and height (now in SkEncodedInfo) and take a RHS
reference to SkEncodedInfo
- Create the SkImageInfo from fEncodedInfo (for now)
- Consolidate choosing skcms_AlphaFormat for Transform here
- Call conversionSupported from initializeColorXform, with a new
parameter for whether there is a color Xform, allowing SkJpegCodec
and SkHeifCodec to override that method instead of having another
method.
SkBmpCodec (etc)
- Adapt to the changes above
- Create a new SkEncodedInfo w/o profile for the swizzler.
SkPngCodec:
- use the new SkEncodedInfo::Colors rather than a custom SkImageInfo
SkRawCodec:
- Remove SkEncodedInfo from SkDngImage, which doesn't actually need it.
This is helpful since we don't know all the info yet.
- Rewrite gAdobeRGB_toXYZD50 as an skcms_Matrix3x3
SkWebpCodec:
- Remove premul_step computation, and simplify to just rely on
the base class' handling of applying the transform.
SkSwizzler:
- Add cases for the new SkEncodedInfo::Colors
TBR=reed@google.com
No public API changes. Only private/public members of SkCodec.h are
modified.
Change-Id: Ic0d3bb752b03f13be886b80331987aa5a5713fc0
Reviewed-on: https://skia-review.googlesource.com/136062
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Bug: skia:
Change-Id: Ic0e0ae23c88f86885583a304d90d1ce874ff14ed
Reviewed-on: https://skia-review.googlesource.com/139960
Auto-Submit: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
This eliminates many GM diffs between gl and glsrgb.
Bug: skia:
Change-Id: Ia35ae9db3f9dba03c227f82d2ad7ab602100d2e9
Reviewed-on: https://skia-review.googlesource.com/139861
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
jpeg_skip_scanlines was incorrectly incrementing an internal counter,
resulting in an infinite loop. (This only occurs for certain types of
progressive images, using certain sample sizes.)
The fix is at 26f109290d.
This is included in tip-of-tree, which is unofficially 2.0.0, so go ahead and
update to it.
Add a test based on the original bug.
Bug: b/78329453
Change-Id: I5ade9924812324d58668c26f71cd622ef93f40a7
Reviewed-on: https://skia-review.googlesource.com/129459
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Bug: chromium:807324
Though these pngs are technically incorrect, many such PNGs exist, and
they are supported in Chromium. Ensure that users of SkCodec (e.g.
Android, Flutter) display them as well.
Change-Id: I2f1e573b4b7039cea81f96397cc0aa4cbc9461c3
Reviewed-on: https://skia-review.googlesource.com/111082
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Bug: b/63909536
ImageDecoder will respect the origin, but BitmapFactory will maintain
its current behavior of not respecting it. Add an option to respect it.
In addition, add support for reading the EXIF data from a WEBP. This
seems to be an uncommon use case, but is occasionally used when
converting from a JPEG. Add 8 WEBPs, all converted (with cwebp) from
their analogous JPEG files already checked in.
Change-Id: I38afca58c86fa99ee9ab7d1dc83aaa4f23132c11
Reviewed-on: https://skia-review.googlesource.com/95300
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
Should make it easier to ask just for images.
Change-Id: If821743dc924c4bfbc6b2b2d29b14affde7b3afd
Reviewed-on: https://skia-review.googlesource.com/82684
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
