This is causing issues with various license checkers. The link to the
appropriate license is maintained.
Change-Id: I6a2e3f670860482bd1f5ec1b46f5ec3ec4840aa9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/522984
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
With variable fonts overlapping glyph contours are now normal. However,
these do not stroke well. Simpify the glyph paths which are marked as
overlapping.
Bug: b/225044541
Change-Id: I9687e28c9274cd189f4ae8e059d8d40dd802ec41
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/521637
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Co-authored with Ben Wagner, bungeman@google.com.
Similar to how we allow configuration of variable font configurations,
provide additional SkFontArguments to select a base palette and a set
of potentially sparse color overrides.
This is required for implementing CSS font-palette.
Modify the more_samples-glyf_colr_1.ttf to have two additional palettes,
and two additional test glyphs, one that draws with COLRv0 logic, one
that draws with COLRv1 logic and has a foreground palette index dot
in the middle. See [1] & [2] for the additions to the test font.
Add a GM which tests this on the SkFontMgr_custom using makeClone() and
makeFromStreamArgs(). The test displays the two glyphs in default
palette on the left, then with palette overrides (as in the title of the
test) on the right. The first row uses a typeface created with
makeFromStreamArgs(), the second uses one created with makeClone().
[1] https://github.com/googlefonts/color-fonts/pull/91
[2] https://github.com/googlefonts/color-fonts/pull/92
Bug: skia:12730, chromium:1170794
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Change-Id: Ia1334f069240edc78fd4791969914e8a6f4fbaf9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/479616
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Let variable axes override existing or determine style information
with priority over FreeType face flags or information
from the OS/2 table.
Add test case for matching a variable fonts through SkFontMgr_FCI to
ensure the weight determination from variable axes is exercise.
The test does not exercise width or slant.
Add a small (~8.5k) subsetted Noto Sans CJK collection as a test font
(made using [1]), and ensure that matching, reported font style and axis
configuration are correct after matching.
[1] https://github.com/drott/noto-cjk/blob/subsetVFttv/subsetvf.py
Bug: skia:12864, skia:12881
Change-Id: I1fb05d88f68eda308b8864d32d98400c68e46834
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/500516
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
Auto-Submit: Dominik Röttsches <drott@chromium.org>
Commit-Queue: Dominik Röttsches <drott@google.com>
The change in [1] is likely responsible for a regression in which we're
not taking into account P2 for gradient skewing anymore.
Fix that, and add a test case to the gradient set of test cases.
Source for test glyph, see here:
https://github.com/googlefonts/color-fonts/pull/90/files
[1] 2da029b28f
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Bug: skia:12822, chromium:1287162
Change-Id: I8b790e2a5c6c04487118306b4b38b1d77349431d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/494676
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Dominik Röttsches <drott@google.com>
fed5521016..6190360967
Contains a change that accepts ClipBoxes only in format number 0 instead
of 1 after a spec change to harmonize format numbering, thus needs
an update to the test font.
Change-Id: I837802648aec1acc0d0424b2b381e3f7031b181e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/450916
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
An additional layer is required to composite correctly. PaintComposite
blends/composites between source and destination. The result is
then drawn on top of previous paint results. Previously, the source
layer was just drawn atop previous paints, then the destination
layer was composited down with composite mode, which was incorrect.
More details in [1].
Add tests for composite modes, compare [2]
[1] https://github.com/googlefonts/nanoemoji/issues/332
[2] https://github.com/googlefonts/color-fonts/pull/73
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Bug: skia:12424
Change-Id: I8ff69022ec09758af7021756b0fb26443216fcca
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/445936
Commit-Queue: Dominik Röttsches <drott@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Reland after MSAN failure, initializing SkRect to empty in
computeColrV1GlyphBoundingBox().
After the discussion in [1] which was filed also in response to feedback
from Ben, the COLRv1 spec moved to not using a bounding box derived from
the `glyf` glyph for a give glyph id, but instead either use a ClipBox
found for a particular glyph id range from a ClipList array in the
COLRv1 table. If such a ClipBox is not found, perform a traversal of the
COLRv1 graph to compute the union of rectangles to compute a bounding
box.
[1] https://github.com/googlefonts/colr-gradients-spec/issues/251
Includes FreeType roll:
47b1a541cb..2c853b38a7
Fixed: skia:12297
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Change-Id: I165fb95c89045c4c7671af2cbe097af38ca65e84
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/437996
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Auto-Submit: Dominik Röttsches <drott@chromium.org>
This reverts commit 4f12b4a599.
Reason for revert: MSAN issue
Original change's description:
> [COLRv1] Support retrieving ClipBox.
>
> After the discussion in [1] which was filed also in response to feedback
> from Ben, the COLRv1 spec moved to not using a bounding box derived from
> the `glyf` glyph for a give glyph id, but instead either use a ClipBox
> found for a particular glyph id range from a ClipList array in the
> COLRv1 table. If such a ClipBox is not found, perform a traversal of the
> COLRv1 graph to compute the union of rectangles to compute a bounding
> box.
>
> [1] https://github.com/googlefonts/colr-gradients-spec/issues/251
>
> Includes FreeType roll:
> 47b1a541cb..2c853b38a7
>
> Fixed: skia:12297
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> Change-Id: Iac3677cb1207b953876b106a1e0d754760612955
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/435116
> Reviewed-by: Ben Wagner <bungeman@google.com>
> Commit-Queue: Dominik Röttsches <drott@google.com>
TBR=bungeman@google.com,drott@chromium.org,drott@google.com,behdad.esfahbod@gmail.com,skcq-be@skia-corp.google.com.iam.gserviceaccount.com
Change-Id: Id041a270bd2e4d4edcaa114c524981bc2c9e5320
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Cq-Include-Trybots: luci.skia.skia.primary:Test-Android-Clang-GalaxyS6-GPU-MaliT760-arm64-Release-All-Android_NativeFonts
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/437738
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
After the discussion in [1] which was filed also in response to feedback
from Ben, the COLRv1 spec moved to not using a bounding box derived from
the `glyf` glyph for a give glyph id, but instead either use a ClipBox
found for a particular glyph id range from a ClipList array in the
COLRv1 table. If such a ClipBox is not found, perform a traversal of the
COLRv1 graph to compute the union of rectangles to compute a bounding
box.
[1] https://github.com/googlefonts/colr-gradients-spec/issues/251
Includes FreeType roll:
47b1a541cb..2c853b38a7
Fixed: skia:12297
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Change-Id: Iac3677cb1207b953876b106a1e0d754760612955
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/435116
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Dominik Röttsches <drott@google.com>
Multiply degree values by 180 as FreeType returns them just as in the
font format. Add more tests for skew and transform, and a sweep
test. Update the test font to follow changes from a work in progress
FontTools branch which implements the new format.
Roll FreeType to include parsing changes
d3dc2da9b2..47b1a541cb
Bug: skia:12272
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Change-Id: Iaaf3a53dbf40828b908202c19de91319cc68b0b3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/432976
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
This allows tests which draw this font on platforms which do not support
the COLRv1 table to draw something rather than nothing.
Change-Id: I024dd4809498d55f8c4c9f0de9e342fed5fb69ac
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/422757
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Found during implementation of COLRv1 fuzzer for FreeType that translate
operation was still missing.
Added a test glyph containing two squares filled with a radial gradient
shifted by dx 128, dy -128 and dx -308, dy 307
combined using a PaintComposite.
Bug: skia:11790
Change-Id: I4cbfe34a111a450777dc2f8fa9d32a405f808a89
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/389116
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Implement support for COLRv1 color gradient vector forms. COLR v1 is an
extension to the OpenType COLR tables that introduces support for
gradients, transforms and compositing. [1]
COLRv1 fonts contain an OpenType COLR table with format v1. In a COLR v1
table, glyphs are defined by a directed, acyclic graph of Paint
operations. The task for the Skia implementation is to extract the COLR
v1 information from the font using FreeType's COLRv1 API, then traverse
the glyph graph and translate information from the font into Skia
operations on SkCanvas.
Care needs to be taken for transformations to work correctly. FreeType
sends a top level transform that includes the scaling from font units to
actual glyph size, as well as optional transforms configured on FreeType
using FT_Set_Transform. This is set up as the starting transform at the
beginning of drawing a COLRv1 glyph. At the stage of setting a clip for
a PaintGlyph operation, the glyph outline is retrieved from FreeType
unscaled and untransformed. Since the starting transformation is applied
to the SkCanvas, the unscaled glyph is properly scaled and positioned.
Similarly, computing the initial bounding box for the COLRv1 glyph needs
to consider transformations. COLRv1 glyphs have a base glyph entry in
the glyf table which can use a minimum of two points for defining a
bounding box. This bounding box is an imaged rectangle enclosing those
two points at the identity transform. We need to compute the bounding
box scaled, but at identity transform, then make a rectangle from it,
that we then transform so that we get a large enough area to paint
in. If those two points from the glyf table would be transformed first,
then we would compute the bounding box, the resulting bounding box ends
up too small.
As a test font, add a version of the samples-glyf_colr_1.ttf from [2]
with one glyph added for testing PaintColrGlyph functionality and
compositions.
Add a basic GM test that produces color glyphs untransformed, with
skew and with rotation and combinations of those.
[1] https://github.com/googlefonts/colr-gradients-spec/
[2] https://github.com/googlefonts/color-fonts
Bug: skia:11264
Change-Id: I8357cd0c7ac0039bb2eac18f21fa343bf61871eb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/300558
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
If font data is used to create an SkTypeface and the font data describes
a variable font and no variation parameters are specified, the
SkTypeface created should have the default values for all axes. This is
particularaly interesting with DirectWrite since it makes this not
straight forward.
Bug: skia:10929
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Change-Id: I4620deebf52142bbdffa1a283343b503cd1e6981
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/338604
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
This font comes up fairly often due to being included as a primary font
in css testing. There are several Paragraph samples which already assume
it is present at this location. It is fairly small and very liberally
licensed.
This font file is ahem.ttf from
https://www.w3.org/Style/CSS/Test/Fonts/Ahem/ .
Change-Id: I6fdcb036cecca66e725ecb30e0a07fef1dfb1cdf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/289445
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Stroking in Skia follows the SVG rules of adding end caps to degenerate
contours. Skip all degenerate contours and degenerate curves on contours
to avoid this.
Bug: skia:9820
Change-Id: I320beeeb3728f39c764729454dcb128a05524d35
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/268166
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
With the recent transition to creating fonts from data as CTFonts and
dropping variation support from macOS 10.11 and earlier, it is now
possible to reliably make variation clones and get the axis information.
Change-Id: Ia9a0922ac94a29e1508d2e74d4ce973751044866
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259421
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Dominik Röttsches <drott@chromium.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
This allows for testing falling into various buckets in the gpu
fallbacks.
Change-Id: Ia0c319a6bdd03c5cdece1ce83ab228c1a3a7c46d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/199420
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Sets up a fake web font loader which serves a local/resource font to
the sample text animation.
Also rename resources/skotty/skotty_* -> resources/skottie/skottie_*.
Change-Id: I4af5b24fc3cc5c63c78801979f9be56744047134
Reviewed-on: https://skia-review.googlesource.com/155881
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
BUG=skia:7624
Change-Id: Id2b7449048591892ff802484d5e3745a7e1402bb
Reviewed-on: https://skia-review.googlesource.com/109521
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
CoreGraphics does not provide a means to get the original font data for a
CGFont, only the tables. As a result, Skia pieces the font data back
together when requested. The most awkward part of this is choosing the
first four bytes, and the CTFont suggestion seems to often be wrong.
This change doublechecks the selection of 'typ1', prefering to use 'OTTO'
if there are no 'TYP1' or 'CID ' tables. These sorts of fonts are
extremely old and unlikely to be in current use. It appears that CTFont
may report that it has this format if it is an 'OTTO' font with very few
glyphs. If Skia serializes such a font with 'typ1' as the first four
bytes, CoreGraphics will not create a CGFont from the resulting font data.
BUG=chromium:809763,skia:7630
Change-Id: I9979b9f0ebdd27c4ad0903e8ee6237241e755541
Reviewed-on: https://skia-review.googlesource.com/113306
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Part of the Typeface test is Android specific and tests that the Android
legacyMakeTypeface returns nullptr when called with a non-null family
name and there is no match. A new FontMgrAndroidLegacyMakeTypeface test
is introduced to test this and also properly test creating one with
SkFontMgr_Android_CustomFonts.
Change-Id: Iceb8b9b5490f5eeeaeac30a68daf2c4daac53c86
Reviewed-on: https://skia-review.googlesource.com/70660
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
The hintgasp font was added specifically for the typefacerendering gm.
However, this gm didn't actually use the font, so now use it. In
addition this adds embedded bitmap strikes to the hintgasp font and the
gm is updated to test these as well.
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NOTREECHECKS=true
Test only change, does not affect users.
Review-Url: https://codereview.chromium.org/2140863002
FreeType automatically selects the 'most Unicode' cmap available,
otherwise the default cmap is NULL. When this happens the fallback
should include the 3,0 symbol cmap, as is outlined in the Apple
TrueType documentation. This cmap should effectively be a Unicode
mapping, but exclusively in the private use area.
BUG=skia:1873,chromium:489452
Review URL: https://codereview.chromium.org/1163833003
This test font contains
☓ U+2613 SALTIRE
⬛ U+2B1B BLACK LARGE SQUARE
⬜ U+2B1C WHITE LARGE SQUARE
All at full EM size (with standard amount above and below the
baseline).
Review URL: https://codereview.chromium.org/1134153002
