Changeset 289862 in webkit


Ignore:
Timestamp:
Feb 15, 2022 4:26:24 PM (5 months ago)
Author:
Nikos Mouchtaris
Message:

[css-transforms] properly handle interpolation of non-invertible matrices
​https://bugs.webkit.org/show_bug.cgi?id=236480

Reviewed by Martin Robinson.

LayoutTests/imported/w3c:

  • web-platform-tests/css/css-transforms/animation/transform-matrix-composition-expected.txt:
  • web-platform-tests/web-animations/animation-model/animation-types/interpolation-per-property-002-expected.txt:

Source/WebCore:

All composition types should fall back to discrete animation behavior when
interpolating non-invertible matrices. Need to segment progress value
depending on either side of 0.5.

  • platform/graphics/transforms/TransformOperations.cpp:

(WebCore::TransformOperations::shouldFallbackToDiscreteAnimation const):
(WebCore::TransformOperations::blendByMatchingOperations const):
(WebCore::TransformOperations::blendByUsingMatrixInterpolation const):

  • platform/graphics/transforms/TransformOperations.h:

(WebCore::TransformOperations::hasMatrixOperation const):

  • platform/graphics/transforms/TransformationMatrix.cpp:

(WebCore::TransformationMatrix::blend):

Location:
trunk
Files:
7 edited

Legend:

Unmodified
Added
Removed

  • trunk/LayoutTests/imported/w3c/ChangeLog

    r289838 r289862  
     12022-02-15  Nikolaos Mouchtaris  <nmouchtaris@apple.com>
     2
     3        [css-transforms] properly handle interpolation of non-invertible matrices
     4        https://bugs.webkit.org/show_bug.cgi?id=236480
     5
     6        Reviewed by Martin Robinson.
     7
     8        * web-platform-tests/css/css-transforms/animation/transform-matrix-composition-expected.txt:
     9        * web-platform-tests/web-animations/animation-model/animation-types/interpolation-per-property-002-expected.txt:
     10
    1112022-02-15  Antti Koivisto  <antti@apple.com>
    212

  • trunk/LayoutTests/imported/w3c/web-platform-tests/css/css-transforms/animation/transform-matrix-composition-expected.txt

    r289599 r289862  
    1414PASS Compositing: property <transform> underlying [matrix3d(0.8535533905932737,0.1464466094067262,-0.5,0,0.1464466094067262,0.8535533905932737,0.5,0,0.5,-0.5,0.7071067811865476,0,100,0,0,1)] from add [matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 100, 0, 0, 1)] to add [matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 200, 0, 0, 1)] at (1) should be [translateX(100px) rotate3d(1, 1, 0, 45deg) translateX(200px)]
    1515PASS Compositing: property <transform> underlying [matrix3d(0.8535533905932737,0.1464466094067262,-0.5,0,0.1464466094067262,0.8535533905932737,0.5,0,0.5,-0.5,0.7071067811865476,0,100,0,0,1)] from add [matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 100, 0, 0, 1)] to add [matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 200, 0, 0, 1)] at (1.5) should be [translateX(100px) rotate3d(1, 1, 0, 45deg) translateX(250px)]
    16 FAIL Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (-0.5) should be [matrix(1, 1, 0, 0, 100, 200)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 100 , 200 ) " but got "matrix ( 1 , 1 , 0 , 0 , 100 , 100 ) "
     16PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (-0.5) should be [matrix(1, 1, 0, 0, 100, 200)]
    1717PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0) should be [matrix(1, 1, 0, 0, 100, 200)]
    18 FAIL Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.25) should be [matrix(1, 1, 0, 0, 100, 200)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 100 , 200 ) " but got "matrix ( 1 , 1 , 0 , 0 , 175 , 175 ) "
    19 FAIL Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.5) should be [matrix(1, 1, 0, 0, 200, 300)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 200 , 300 ) " but got "matrix ( 1 , 1 , 0 , 0 , 200 , 200 ) "
    20 FAIL Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.75) should be [matrix(1, 1, 0, 0, 200, 300)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 200 , 300 ) " but got "matrix ( 1 , 1 , 0 , 0 , 225 , 225 ) "
     18PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.25) should be [matrix(1, 1, 0, 0, 100, 200)]
     19PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.5) should be [matrix(1, 1, 0, 0, 200, 300)]
     20PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.75) should be [matrix(1, 1, 0, 0, 200, 300)]
    2121PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (1) should be [matrix(1, 1, 0, 0, 200, 300)]
    22 FAIL Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (1.5) should be [matrix(1, 1, 0, 0, 200, 300)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 200 , 300 ) " but got "matrix ( 1 , 1 , 0 , 0 , 300 , 300 ) "
    23 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (-0.5) should be [matrix(1, 1, 0, 0, 100, 100)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 100 , 100 ) " but got "matrix ( 1.28 , 0.84 , - 0.03 , 0.3 , 187.5 , - 37.5 ) "
     22PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from add [matrix(1, 0, 0, 1, 100, 0)] to add [matrix(1, 0, 0, 1, 200, 0)] at (1.5) should be [matrix(1, 1, 0, 0, 200, 300)]
     23PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (-0.5) should be [matrix(1, 1, 0, 0, 100, 100)]
    2424PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0) should be [matrix(1, 1, 0, 0, 100, 100)]
    25 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.25) should be [matrix(1, 1, 0, 0, 100, 100)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 100 , 100 ) " but got "matrix ( 0.95 , 0.86 , - 0.01 , 0.08 , 159.38 , 65.63 ) "
    26 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.5) should be [matrix(1, 0, 0, 1, 300, 0)] assert_equals: expected "matrix ( 1 , 0 , 0 , 1 , 300 , 0 ) " but got "matrix ( 0.95 , 0.63 , - 0.03 , 0.3 , 187.5 , 62.5 ) "
    27 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.75) should be [matrix(1, 0, 0, 1, 300, 0)] assert_equals: expected "matrix ( 1 , 0 , 0 , 1 , 300 , 0 ) " but got "matrix ( 0.97 , 0.32 , - 0.04 , 0.63 , 234.38 , 40.63 ) "
     25PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.25) should be [matrix(1, 1, 0, 0, 100, 100)]
     26PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.5) should be [matrix(1, 0, 0, 1, 300, 0)]
     27PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (0.75) should be [matrix(1, 0, 0, 1, 300, 0)]
    2828PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (1) should be [matrix(1, 0, 0, 1, 300, 0)]
    29 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (1.5) should be [matrix(1, 0, 0, 1, 300, 0)] assert_equals: expected "matrix ( 1 , 0 , 0 , 1 , 300 , 0 ) " but got "matrix ( 0.99 , - 0.56 , 0.37 , 1.59 , 487.5 , - 137.5 ) "
     29PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from add [matrix(1, 1, 0, 0, 0, 100)] to add [matrix(1, 0, 0, 1, 200, 0)] at (1.5) should be [matrix(1, 0, 0, 1, 300, 0)]
    3030PASS Compositing: property <transform> underlying [matrix(0, 1, -1, 0, 100, 0)] from accumulate [matrix(1, 0, 0, 1, 100, 0)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (-0.5) should be [matrix(0, 1, -1, 0, 150, 0)]
    3131PASS Compositing: property <transform> underlying [matrix(0, 1, -1, 0, 100, 0)] from accumulate [matrix(1, 0, 0, 1, 100, 0)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (0) should be [matrix(0, 1, -1, 0, 200, 0)]
    … …  
    4949PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from accumulate [matrix(1, 0, 0, 1, 100, 0)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (1) should be [matrix(1, 0, 0, 1, 200, 0)]
    5050PASS Compositing: property <transform> underlying [matrix(1, 1, 0, 0, 0, 100)] from accumulate [matrix(1, 0, 0, 1, 100, 0)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (1.5) should be [matrix(1, 0, 0, 1, 250, 0)]
    51 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (-0.5) should be [matrix(1, 1, 0, 0, 0, 100)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 0 , 100 ) " but got "matrix ( 1.28 , 0.84 , - 0.03 , 0.3 , 75 , - 75 ) "
     51PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (-0.5) should be [matrix(1, 1, 0, 0, 0, 100)]
    5252PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (0) should be [matrix(1, 1, 0, 0, 0, 100)]
    53 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (0.25) should be [matrix(1, 1, 0, 0, 0, 100)] assert_equals: expected "matrix ( 1 , 1 , 0 , 0 , 0 , 100 ) " but got "matrix ( 0.95 , 0.86 , - 0.01 , 0.08 , 75 , 75 ) "
    54 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (0.5) should be [matrix(1, 0, 0, 1, 300, 0)] assert_equals: expected "matrix ( 1 , 0 , 0 , 1 , 300 , 0 ) " but got "matrix ( 0.95 , 0.63 , - 0.03 , 0.3 , 125 , 75 ) "
    55 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (0.75) should be [matrix(1, 0, 0, 1, 300, 0)] assert_equals: expected "matrix ( 1 , 0 , 0 , 1 , 300 , 0 ) " but got "matrix ( 0.97 , 0.32 , - 0.04 , 0.63 , 200 , 50 ) "
     53PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (0.25) should be [matrix(1, 1, 0, 0, 0, 100)]
     54PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (0.5) should be [matrix(1, 0, 0, 1, 300, 0)]
     55PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (0.75) should be [matrix(1, 0, 0, 1, 300, 0)]
    5656PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (1) should be [matrix(1, 0, 0, 1, 300, 0)]
    57 FAIL Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (1.5) should be [matrix(1, 0, 0, 1, 300, 0)] assert_equals: expected "matrix ( 1 , 0 , 0 , 1 , 300 , 0 ) " but got "matrix ( 0.99 , - 0.56 , 0.37 , 1.59 , 575 , - 175 ) "
     57PASS Compositing: property <transform> underlying [matrix(1, 0, 0, 1, 100, 0)] from accumulate [matrix(1, 1, 0, 0, 0, 100)] to accumulate [matrix(1, 0, 0, 1, 200, 0)] at (1.5) should be [matrix(1, 0, 0, 1, 300, 0)]
    5858

  • trunk/LayoutTests/imported/w3c/web-platform-tests/web-animations/animation-model/animation-types/interpolation-per-property-002-expected.txt

    r289732 r289862  
    225225PASS transform: mismatched 3D transforms
    226226PASS transform: rotateY
    227 FAIL transform: non-invertible matrices assert_approx_equals: expected matrix(-1, 0, 0, -1, 200, 0) but got matrix(-0.070657, 0.719998, -0.395146, -0.260079, 87.65015, 62.44985): The value should be matrix(-1, 0, 0, -1, 200, 0) at 499ms but got matrix(-0.070657, 0.719998, -0.395146, -0.260079, 87.65015, 62.44985) expected -1 +/- 0.0001 but got -0.070657
    228 FAIL transform: non-invertible matrices in matched transform lists assert_approx_equals: expected matrix(0, -1, 1, 0, 250, 0) but got matrix(-0.229966, -0.692507, 0.329012, -0.3263, 162.600147, 62.44985): The value should be matrix(0, -1, 1, 0, 250, 0) at 499ms but got matrix(-0.229966, -0.692507, 0.329012, -0.3263, 162.600147, 62.44985) expected 0 +/- 0.0001 but got -0.229966
    229 FAIL transform: non-invertible matrices in mismatched transform lists assert_approx_equals: expected matrix(-2, 0, 0, -2, 250, 0) but got matrix(0.457235, 1.576158, -1.117609, -0.657221, 112.65025, 49.9): The value should be matrix(-2, 0, 0, -2, 250, 0) at 499ms but got matrix(0.457235, 1.576158, -1.117609, -0.657221, 112.65025, 49.9) expected -2 +/- 0.0001 but got 0.457235
     227PASS transform: non-invertible matrices
     228PASS transform: non-invertible matrices in matched transform lists
     229PASS transform: non-invertible matrices in mismatched transform lists
    230230FAIL transform: perspective assert_approx_equals: expected matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, -0.55, 0, 0, 0, 1) but got matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, -0.05, 0, 0, 0, 1): The value should be matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, -0.55, 0, 0, 0, 1) at 500ms but got matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, -0.05, 0, 0, 0, 1) expected -0.55 +/- 0.0001 but got -0.05
    231231PASS transform-box (type: discrete) has testInterpolation function

  • trunk/Source/WebCore/ChangeLog

    r289860 r289862  
     12022-02-15  Nikolaos Mouchtaris  <nmouchtaris@apple.com>
     2
     3        [css-transforms] properly handle interpolation of non-invertible matrices
     4        https://bugs.webkit.org/show_bug.cgi?id=236480
     5
     6        Reviewed by Martin Robinson.
     7
     8        All composition types should fall back to discrete animation behavior when
     9        interpolating non-invertible matrices. Need to segment progress value
     10        depending on either side of 0.5.
     11
     12        * platform/graphics/transforms/TransformOperations.cpp:
     13        (WebCore::TransformOperations::shouldFallbackToDiscreteAnimation const):
     14        (WebCore::TransformOperations::blendByMatchingOperations const):
     15        (WebCore::TransformOperations::blendByUsingMatrixInterpolation const):
     16        * platform/graphics/transforms/TransformOperations.h:
     17        (WebCore::TransformOperations::hasMatrixOperation const):
     18        * platform/graphics/transforms/TransformationMatrix.cpp:
     19        (WebCore::TransformationMatrix::blend):
     20
    1212022-02-15  Philip Chimento  <pchimento@igalia.com>
    222

  • trunk/Source/WebCore/platform/graphics/transforms/TransformOperations.cpp

    r289732 r289862  
    9797}
    9898
     99bool TransformOperations::shouldFallBackToDiscreteAnimation(const TransformOperations& from, const LayoutSize& boxSize) const
     100{
     101    return (from.hasMatrixOperation() || hasMatrixOperation()) && (!from.isInvertible(boxSize) || !isInvertible(boxSize));
     102}
     103
    99104TransformOperations TransformOperations::blendByMatchingOperations(const TransformOperations& from, const BlendingContext& context, const LayoutSize& boxSize) const
    100105{
    … …  
    105110    unsigned maxOperationCount = std::max(fromOperationCount, toOperationCount);
    106111   
    107     if (context.compositeOperation == CompositeOperation::Accumulate && (!from.isInvertible(boxSize) || !isInvertible(boxSize)))
     112    if (shouldFallBackToDiscreteAnimation(from, boxSize))
    108113        return blendByUsingMatrixInterpolation(from, context, boxSize);
    109114   
    … …  
    140145    from.apply(boxSize, fromTransform);
    141146    apply(boxSize, toTransform);
    142     toTransform.blend(fromTransform, context.progress, context.compositeOperation);
     147   
     148    auto progress = context.progress;
     149    auto compositeOperation = context.compositeOperation;
     150    if (shouldFallBackToDiscreteAnimation(from, boxSize)) {
     151        progress = progress < 0.5 ? 0 : 1;
     152        compositeOperation = CompositeOperation::Replace;
     153    }
     154    toTransform.blend(fromTransform, progress, compositeOperation);
    143155    // Append the result
    144156    result.operations().append(Matrix3DTransformOperation::create(toTransform));

  • trunk/Source/WebCore/platform/graphics/transforms/TransformOperations.h

    r289732 r289862  
    6161        return false;
    6262    }
     63   
     64    bool hasMatrixOperation() const
     65    {
     66        return std::any_of(m_operations.begin(), m_operations.end(), [](auto operation) {
     67            return operation->type() == WebCore::TransformOperation::MATRIX;
     68        });
     69    }
    6370
    6471    bool isRepresentableIn2D() const
    … …  
    97104    }
    98105   
     106    bool shouldFallBackToDiscreteAnimation(const TransformOperations&, const LayoutSize&) const;
     107   
    99108    TransformOperations blendByMatchingOperations(const TransformOperations& from, const BlendingContext&, const LayoutSize&) const;
    100109    TransformOperations blendByUsingMatrixInterpolation(const TransformOperations& from, const BlendingContext&, const LayoutSize&) const;

  • trunk/Source/WebCore/platform/graphics/transforms/TransformationMatrix.cpp

    r289599 r289862  
    17541754void TransformationMatrix::blend(const TransformationMatrix& from, double progress, CompositeOperation compositeOperation)
    17551755{
    1756     if (compositeOperation == CompositeOperation::Accumulate && (!from.isInvertible() || !isInvertible()))
    1757         compositeOperation = CompositeOperation::Replace;
    17581756   
    17591757    if (!progress && compositeOperation == CompositeOperation::Replace) {
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