Skip paint chunks with effectively invisible opacity.

third_party/WebKit/Source/core/paint/PaintLayerPainterTest.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/PaintLayerPainter.h"
 
 #include "core/layout/LayoutBoxModelObject.h"
 #include "core/layout/compositing/CompositedLayerMapping.h"
 #include "core/paint/PaintControllerPaintTest.h"
 #include "platform/graphics/GraphicsContext.h"
@@ skipping 14 matching lines @@
     : public testing::WithParamInterface<PaintLayerPainterTestParam>,
       private ScopedRootLayerScrollingForTest,
       public PaintControllerPaintTestBase {
   USING_FAST_MALLOC(PaintLayerPainterTest);
 
  public:
   PaintLayerPainterTest()
       : ScopedRootLayerScrollingForTest(GetParam().root_layer_scrolling),
         PaintControllerPaintTestBase(GetParam().slimming_paint_v2) {}
 
-  void ExpectPaintedOutputVisibility(const char* element_name,
-                                     bool expected_spv1) {
-    ExpectPaintedOutputVisibility(element_name, expected_spv1, expected_spv1);
-  }
-
-  void ExpectPaintedOutputVisibility(const char* element_name,
-                                     bool expected_spv1,
-                                     bool expected_spv2) {
-    PaintLayer* target_layer =
-        ToLayoutBox(GetLayoutObjectByElementId(element_name))->Layer();
-    PaintLayerPaintingInfo painting_info(nullptr, LayoutRect(),
-                                         kGlobalPaintNormalPhase, LayoutSize());
-    bool invisible =
-        PaintLayerPainter(*target_layer).PaintedOutputInvisible(painting_info);
-    bool expected_value = RuntimeEnabledFeatures::slimmingPaintV2Enabled()
-                              ? expected_spv2
-                              : expected_spv1;
-    EXPECT_EQ(expected_value, invisible)
-        << "Failed painted output visibility [spv2_enabled="
-        << RuntimeEnabledFeatures::slimmingPaintV2Enabled()
-        << ", expected=" << expected_value << ", actual=" << invisible << "].";
-  }
-
  private:
   void SetUp() override {
     PaintControllerPaintTestBase::SetUp();
     EnableCompositing();
   }
 };
 
 INSTANTIATE_TEST_CASE_P(
     All,
     PaintLayerPainterTest,
@@ skipping 717 matching lines @@
   EXPECT_TRUE(layer.IsSelfPaintingLayer());
   EXPECT_FALSE(layer.NeedsPaintPhaseDescendantBlockBackgrounds());
 
   ToHTMLElement(table.GetNode())
       ->setAttribute(HTMLNames::styleAttr,
                      "position: relative; border-collapse: collapse");
   GetDocument().View()->UpdateAllLifecyclePhases();
   EXPECT_TRUE(layer.NeedsPaintPhaseDescendantBlockBackgrounds());
 }
 
-TEST_P(PaintLayerPainterTest, DontPaintWithTinyOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001'></div>");
-  ExpectPaintedOutputVisibility("target", true, false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithTinyOpacityAndWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001; "
-      "will-change: opacity'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithTinyOpacityAndBackdropFilter) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001;"
-      "  backdrop-filter: blur(2px);'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest,
-       DoPaintWithTinyOpacityAndBackdropFilterAndWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001;"
-      "  backdrop-filter: blur(2px); will-change: opacity'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithCompositedTinyOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.0001;"
-      " will-change: transform'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithNonTinyOpacity) {
-  SetBodyInnerHTML(
-      "<div id='target' style='background: blue; opacity: 0.1'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithEffectAnimationZeroOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div { "
-      "  width: 100px; "
-      "  height: 100px; "
-      "  animation-name: example; "
-      "  animation-duration: 4s; "
-      "} "
-      "@keyframes example { "
-      "  from { opacity: 0.0;} "
-      "  to { opacity: 1.0;} "
-      "} "
-      "</style> "
-      "<div id='target'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DontPaintWithTransformAnimationZeroOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div#target { "
-      "  animation-name: example; "
-      "  animation-duration: 4s; "
-      "  opacity: 0.0; "
-      "} "
-      "@keyframes example { "
-      " from { transform: translate(0px, 0px); } "
-      " to { transform: translate(3em, 0px); } "
-      "} "
-      "</style> "
-      "<div id='target'>x</div></div>");
-  ExpectPaintedOutputVisibility("target", false, true);
-}
-
-TEST_P(PaintLayerPainterTest,
-       DoPaintWithTransformAnimationZeroOpacityWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div#target { "
-      "  animation-name: example; "
-      "  animation-duration: 4s; "
-      "  opacity: 0.0; "
-      "  will-change: opacity; "
-      "} "
-      "@keyframes example { "
-      " from { transform: translate(0px, 0px); } "
-      " to { transform: translate(3em, 0px); } "
-      "} "
-      "</style> "
-      "<div id='target'>x</div></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div { "
-      "  width: 100px; "
-      "  height: 100px; "
-      "  will-change: opacity;"
-      "}"
-      "</style> "
-      "<div id='target'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest, DoPaintWithZeroOpacityAndWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div { "
-      "  width: 100px; "
-      "  height: 100px; "
-      "  opacity: 0; "
-      "  will-change: opacity;"
-      "}"
-      "</style> "
-      "<div id='target'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
-TEST_P(PaintLayerPainterTest,
-       DoPaintWithNoContentAndZeroOpacityAndWillChangeOpacity) {
-  SetBodyInnerHTML(
-      "<style> "
-      "div { "
-      "  width: 100px; "
-      "  height: 100px; "
-      "  opacity: 0; "
-      "  will-change: opacity;"
-      "}"
-      "</style> "
-      "<div id='target'></div>");
-  ExpectPaintedOutputVisibility("target", false);
-}
-
 }  // namespace blink