// Copyright 2011 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 "config.h"
#include "CCLayerTreeHostCommon.h"
#include "CCAnimationTestCommon.h"
#include "CCLayerAnimationController.h"
#include "CCLayerImpl.h"
#include "CCLayerSorter.h"
#include "CCLayerTreeTestCommon.h"
#include "CCMathUtil.h"
#include "CCProxy.h"
#include "CCSingleThreadProxy.h"
#include "CCThread.h"
#include "ContentLayerChromium.h"
#include "LayerChromium.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <public/WebTransformationMatrix.h>
using namespace WebCore;
using namespace WebKitTests;
using WebKit::WebTransformationMatrix;
void WebKitTests::ExpectTransformationMatrixEq(WebTransformationMatrix expected,
WebTransformationMatrix actual)
{
EXPECT_FLOAT_EQ((expected).m11(), (actual).m11());
EXPECT_FLOAT_EQ((expected).m12(), (actual).m12());
EXPECT_FLOAT_EQ((expected).m13(), (actual).m13());
EXPECT_FLOAT_EQ((expected).m14(), (actual).m14());
EXPECT_FLOAT_EQ((expected).m21(), (actual).m21());
EXPECT_FLOAT_EQ((expected).m22(), (actual).m22());
EXPECT_FLOAT_EQ((expected).m23(), (actual).m23());
EXPECT_FLOAT_EQ((expected).m24(), (actual).m24());
EXPECT_FLOAT_EQ((expected).m31(), (actual).m31());
EXPECT_FLOAT_EQ((expected).m32(), (actual).m32());
EXPECT_FLOAT_EQ((expected).m33(), (actual).m33());
EXPECT_FLOAT_EQ((expected).m34(), (actual).m34());
EXPECT_FLOAT_EQ((expected).m41(), (actual).m41());
EXPECT_FLOAT_EQ((expected).m42(), (actual).m42());
EXPECT_FLOAT_EQ((expected).m43(), (actual).m43());
EXPECT_FLOAT_EQ((expected).m44(), (actual).m44());
}
namespace {
template<typename LayerType>
void setLayerPropertiesForTesting(LayerType* layer, const WebTransformationMatrix& transform, const WebTransformationMatrix& sublayerTransform, const FloatPoint& anchor, const FloatPoint& position, const IntSize& bounds, bool preserves3D)
{
layer->setTransform(transform);
layer->setSublayerTransform(sublayerTransform);
layer->setAnchorPoint(anchor);
layer->setPosition(position);
layer->setBounds(bounds);
layer->setPreserves3D(preserves3D);
}
void setLayerPropertiesForTesting(LayerChromium* layer, const WebTransformationMatrix& transform, const WebTransformationMatrix& sublayerTransform, const FloatPoint& anchor, const FloatPoint& position, const IntSize& bounds, bool preserves3D)
{
setLayerPropertiesForTesting<LayerChromium>(layer, transform, sublayerTransform, anchor, position, bounds, preserves3D);
}
void setLayerPropertiesForTesting(CCLayerImpl* layer, const WebTransformationMatrix& transform, const WebTransformationMatrix& sublayerTransform, const FloatPoint& anchor, const FloatPoint& position, const IntSize& bounds, bool preserves3D)
{
setLayerPropertiesForTesting<CCLayerImpl>(layer, transform, sublayerTransform, anchor, position, bounds, preserves3D);
layer->setContentBounds(bounds);
}
void executeCalculateDrawTransformsAndVisibility(LayerChromium* rootLayer)
{
WebTransformationMatrix identityMatrix;
Vector<RefPtr<LayerChromium> > dummyRenderSurfaceLayerList;
int dummyMaxTextureSize = 512;
// We are probably not testing what is intended if the rootLayer bounds are empty.
ASSERT(!rootLayer->bounds().isEmpty());
CCLayerTreeHostCommon::calculateDrawTransforms(rootLayer, rootLayer->bounds(), 1, dummyMaxTextureSize, dummyRenderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(dummyRenderSurfaceLayerList);
}
void executeCalculateDrawTransformsAndVisibility(CCLayerImpl* rootLayer)
{
// Note: this version skips layer sorting.
WebTransformationMatrix identityMatrix;
Vector<CCLayerImpl*> dummyRenderSurfaceLayerList;
int dummyMaxTextureSize = 512;
// We are probably not testing what is intended if the rootLayer bounds are empty.
ASSERT(!rootLayer->bounds().isEmpty());
CCLayerTreeHostCommon::calculateDrawTransforms(rootLayer, rootLayer->bounds(), 1, 0, dummyMaxTextureSize, dummyRenderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(dummyRenderSurfaceLayerList);
}
WebTransformationMatrix remove3DComponentOfMatrix(const WebTransformationMatrix& mat)
{
WebTransformationMatrix ret = mat;
ret.setM13(0);
ret.setM23(0);
ret.setM31(0);
ret.setM32(0);
ret.setM33(1);
ret.setM34(0);
ret.setM43(0);
return ret;
}
PassOwnPtr<CCLayerImpl> createTreeForFixedPositionTests()
{
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(1);
OwnPtr<CCLayerImpl> child = CCLayerImpl::create(2);
OwnPtr<CCLayerImpl> grandChild = CCLayerImpl::create(3);
OwnPtr<CCLayerImpl> greatGrandChild = CCLayerImpl::create(4);
WebTransformationMatrix IdentityMatrix;
FloatPoint anchor(0, 0);
FloatPoint position(0, 0);
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), IdentityMatrix, IdentityMatrix, anchor, position, bounds, false);
setLayerPropertiesForTesting(child.get(), IdentityMatrix, IdentityMatrix, anchor, position, bounds, false);
setLayerPropertiesForTesting(grandChild.get(), IdentityMatrix, IdentityMatrix, anchor, position, bounds, false);
setLayerPropertiesForTesting(greatGrandChild.get(), IdentityMatrix, IdentityMatrix, anchor, position, bounds, false);
grandChild->addChild(greatGrandChild.release());
child->addChild(grandChild.release());
root->addChild(child.release());
return root.release();
}
class LayerChromiumWithForcedDrawsContent : public LayerChromium {
public:
LayerChromiumWithForcedDrawsContent()
: LayerChromium()
{
}
virtual bool drawsContent() const OVERRIDE { return true; }
};
TEST(CCLayerTreeHostCommonTest, verifyTransformsForNoOpLayer)
{
// Sanity check: For layers positioned at zero, with zero size,
// and with identity transforms, then the drawTransform,
// screenSpaceTransform, and the hierarchy passed on to children
// layers should also be identity transforms.
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromium> grandChild = LayerChromium::create();
parent->addChild(child);
child->addChild(grandChild);
WebTransformationMatrix identityMatrix;
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(0, 0), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(0, 0), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, child->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, grandChild->screenSpaceTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyTransformsForSingleLayer)
{
WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> layer = LayerChromium::create();
// Case 1: setting the sublayer transform should not affect this layer's draw transform or screen-space transform.
WebTransformationMatrix arbitraryTranslation;
arbitraryTranslation.translate(10, 20);
setLayerPropertiesForTesting(layer.get(), identityMatrix, arbitraryTranslation, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
executeCalculateDrawTransformsAndVisibility(layer.get());
WebTransformationMatrix expectedDrawTransform = identityMatrix;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedDrawTransform, layer->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, layer->screenSpaceTransform());
// Case 2: Setting the bounds of the layer should not affect either the draw transform or the screenspace transform.
WebTransformationMatrix translationToCenter;
translationToCenter.translate(5, 6);
setLayerPropertiesForTesting(layer.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 12), false);
executeCalculateDrawTransformsAndVisibility(layer.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, layer->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, layer->screenSpaceTransform());
// Case 3: The anchor point by itself (without a layer transform) should have no effect on the transforms.
setLayerPropertiesForTesting(layer.get(), identityMatrix, identityMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 0), IntSize(10, 12), false);
executeCalculateDrawTransformsAndVisibility(layer.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, layer->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, layer->screenSpaceTransform());
// Case 4: A change in actual position affects both the draw transform and screen space transform.
WebTransformationMatrix positionTransform;
positionTransform.translate(0, 1.2);
setLayerPropertiesForTesting(layer.get(), identityMatrix, identityMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 1.2f), IntSize(10, 12), false);
executeCalculateDrawTransformsAndVisibility(layer.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(positionTransform, layer->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(positionTransform, layer->screenSpaceTransform());
// Case 5: In the correct sequence of transforms, the layer transform should pre-multiply the translationToCenter. This is easily tested by
// using a scale transform, because scale and translation are not commutative.
WebTransformationMatrix layerTransform;
layerTransform.scale3d(2, 2, 1);
setLayerPropertiesForTesting(layer.get(), layerTransform, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 12), false);
executeCalculateDrawTransformsAndVisibility(layer.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(layerTransform, layer->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(layerTransform, layer->screenSpaceTransform());
// Case 6: The layer transform should occur with respect to the anchor point.
WebTransformationMatrix translationToAnchor;
translationToAnchor.translate(5, 0);
WebTransformationMatrix expectedResult = translationToAnchor * layerTransform * translationToAnchor.inverse();
setLayerPropertiesForTesting(layer.get(), layerTransform, identityMatrix, FloatPoint(0.5, 0), FloatPoint(0, 0), IntSize(10, 12), false);
executeCalculateDrawTransformsAndVisibility(layer.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedResult, layer->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedResult, layer->screenSpaceTransform());
// Case 7: Verify that position pre-multiplies the layer transform.
// The current implementation of calculateDrawTransforms does this implicitly, but it is
// still worth testing to detect accidental regressions.
expectedResult = positionTransform * translationToAnchor * layerTransform * translationToAnchor.inverse();
setLayerPropertiesForTesting(layer.get(), layerTransform, identityMatrix, FloatPoint(0.5, 0), FloatPoint(0, 1.2f), IntSize(10, 12), false);
executeCalculateDrawTransformsAndVisibility(layer.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedResult, layer->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedResult, layer->screenSpaceTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyTransformsForSimpleHierarchy)
{
WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromium> grandChild = LayerChromium::create();
parent->addChild(child);
child->addChild(grandChild);
// Case 1: parent's anchorPoint should not affect child or grandChild.
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 0), IntSize(10, 12), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(16, 18), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(76, 78), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, child->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, grandChild->screenSpaceTransform());
// Case 2: parent's position affects child and grandChild.
WebTransformationMatrix parentPositionTransform;
parentPositionTransform.translate(0, 1.2);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 1.2f), IntSize(10, 12), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(16, 18), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(76, 78), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentPositionTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentPositionTransform, child->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentPositionTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentPositionTransform, grandChild->screenSpaceTransform());
// Case 3: parent's local transform affects child and grandchild
WebTransformationMatrix parentLayerTransform;
parentLayerTransform.scale3d(2, 2, 1);
WebTransformationMatrix parentTranslationToAnchor;
parentTranslationToAnchor.translate(2.5, 3);
WebTransformationMatrix parentCompositeTransform = parentTranslationToAnchor * parentLayerTransform * parentTranslationToAnchor.inverse();
setLayerPropertiesForTesting(parent.get(), parentLayerTransform, identityMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 0), IntSize(10, 12), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(16, 18), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(76, 78), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, grandChild->screenSpaceTransform());
// Case 4: parent's sublayerMatrix affects child and grandchild
// scaling is used here again so that the correct sequence of transforms is properly tested.
// Note that preserves3D is false, but the sublayer matrix should retain its 3D properties when given to child.
// But then, the child also does not preserve3D. When it gives its hierarchy to the grandChild, it should be flattened to 2D.
WebTransformationMatrix parentSublayerMatrix;
parentSublayerMatrix.scale3d(10, 10, 3.3);
WebTransformationMatrix parentTranslationToCenter;
parentTranslationToCenter.translate(5, 6);
// Sublayer matrix is applied to the center of the parent layer.
parentCompositeTransform = parentTranslationToAnchor * parentLayerTransform * parentTranslationToAnchor.inverse()
* parentTranslationToCenter * parentSublayerMatrix * parentTranslationToCenter.inverse();
WebTransformationMatrix flattenedCompositeTransform = remove3DComponentOfMatrix(parentCompositeTransform);
setLayerPropertiesForTesting(parent.get(), parentLayerTransform, parentSublayerMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 0), IntSize(10, 12), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(16, 18), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(76, 78), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(flattenedCompositeTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(flattenedCompositeTransform, grandChild->screenSpaceTransform());
// Case 5: same as Case 4, except that child does preserve 3D, so the grandChild should receive the non-flattened composite transform.
//
setLayerPropertiesForTesting(parent.get(), parentLayerTransform, parentSublayerMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 0), IntSize(10, 12), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(16, 18), true);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(76, 78), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, grandChild->screenSpaceTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyTransformsForSingleRenderSurface)
{
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> grandChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(child);
child->addChild(grandChild);
// Child is set up so that a new render surface should be created.
child->setOpacity(0.5);
WebTransformationMatrix identityMatrix;
WebTransformationMatrix parentLayerTransform;
parentLayerTransform.scale3d(1, 0.9, 1);
WebTransformationMatrix parentTranslationToAnchor;
parentTranslationToAnchor.translate(25, 30);
WebTransformationMatrix parentSublayerMatrix;
parentSublayerMatrix.scale3d(0.9, 1, 3.3);
WebTransformationMatrix parentTranslationToCenter;
parentTranslationToCenter.translate(50, 60);
WebTransformationMatrix parentCompositeTransform = parentTranslationToAnchor * parentLayerTransform * parentTranslationToAnchor.inverse()
* parentTranslationToCenter * parentSublayerMatrix * parentTranslationToCenter.inverse();
// Child's render surface should not exist yet.
ASSERT_FALSE(child->renderSurface());
setLayerPropertiesForTesting(parent.get(), parentLayerTransform, parentSublayerMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 0), IntSize(100, 120), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(16, 18), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(8, 10), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
// Render surface should have been created now.
ASSERT_TRUE(child->renderSurface());
ASSERT_EQ(child, child->renderTarget());
// The child layer's draw transform should refer to its new render surface.
// The screen-space transform, however, should still refer to the root.
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->screenSpaceTransform());
// Because the grandChild is the only drawable content, the child's renderSurface will tighten its bounds to the grandChild.
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->renderTarget()->renderSurface()->drawTransform());
// The screen space is the same as the target since the child surface draws into the root.
EXPECT_TRANSFORMATION_MATRIX_EQ(parentCompositeTransform, child->renderTarget()->renderSurface()->screenSpaceTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyTransformsForReplica)
{
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromium> childReplica = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> grandChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(child);
child->addChild(grandChild);
child->setReplicaLayer(childReplica.get());
// Child is set up so that a new render surface should be created.
child->setOpacity(0.5);
WebTransformationMatrix identityMatrix;
WebTransformationMatrix parentLayerTransform;
parentLayerTransform.scale3d(2, 2, 1);
WebTransformationMatrix parentTranslationToAnchor;
parentTranslationToAnchor.translate(2.5, 3);
WebTransformationMatrix parentSublayerMatrix;
parentSublayerMatrix.scale3d(10, 10, 3.3);
WebTransformationMatrix parentTranslationToCenter;
parentTranslationToCenter.translate(5, 6);
WebTransformationMatrix parentCompositeTransform = parentTranslationToAnchor * parentLayerTransform * parentTranslationToAnchor.inverse()
* parentTranslationToCenter * parentSublayerMatrix * parentTranslationToCenter.inverse();
WebTransformationMatrix childTranslationToCenter;
childTranslationToCenter.translate(8, 9);
WebTransformationMatrix replicaLayerTransform;
replicaLayerTransform.scale3d(3, 3, 1);
WebTransformationMatrix replicaCompositeTransform = parentCompositeTransform * replicaLayerTransform;
// Child's render surface should not exist yet.
ASSERT_FALSE(child->renderSurface());
setLayerPropertiesForTesting(parent.get(), parentLayerTransform, parentSublayerMatrix, FloatPoint(0.25, 0.25), FloatPoint(0, 0), IntSize(10, 12), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(16, 18), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(-0.5, -0.5), IntSize(1, 1), false);
setLayerPropertiesForTesting(childReplica.get(), replicaLayerTransform, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(0, 0), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
// Render surface should have been created now.
ASSERT_TRUE(child->renderSurface());
ASSERT_EQ(child, child->renderTarget());
EXPECT_TRANSFORMATION_MATRIX_EQ(replicaCompositeTransform, child->renderTarget()->renderSurface()->replicaDrawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(replicaCompositeTransform, child->renderTarget()->renderSurface()->replicaScreenSpaceTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyTransformsForRenderSurfaceHierarchy)
{
// This test creates a more complex tree and verifies it all at once. This covers the following cases:
// - layers that are described w.r.t. a render surface: should have draw transforms described w.r.t. that surface
// - A render surface described w.r.t. an ancestor render surface: should have a draw transform described w.r.t. that ancestor surface
// - Replicas of a render surface are described w.r.t. the replica's transform around its anchor, along with the surface itself.
// - Sanity check on recursion: verify transforms of layers described w.r.t. a render surface that is described w.r.t. an ancestor render surface.
// - verifying that each layer has a reference to the correct renderSurface and renderTarget values.
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> renderSurface1 = LayerChromium::create();
RefPtr<LayerChromium> renderSurface2 = LayerChromium::create();
RefPtr<LayerChromium> childOfRoot = LayerChromium::create();
RefPtr<LayerChromium> childOfRS1 = LayerChromium::create();
RefPtr<LayerChromium> childOfRS2 = LayerChromium::create();
RefPtr<LayerChromium> replicaOfRS1 = LayerChromium::create();
RefPtr<LayerChromium> replicaOfRS2 = LayerChromium::create();
RefPtr<LayerChromium> grandChildOfRoot = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> grandChildOfRS1 = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> grandChildOfRS2 = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(renderSurface1);
parent->addChild(childOfRoot);
renderSurface1->addChild(childOfRS1);
renderSurface1->addChild(renderSurface2);
renderSurface2->addChild(childOfRS2);
childOfRoot->addChild(grandChildOfRoot);
childOfRS1->addChild(grandChildOfRS1);
childOfRS2->addChild(grandChildOfRS2);
renderSurface1->setReplicaLayer(replicaOfRS1.get());
renderSurface2->setReplicaLayer(replicaOfRS2.get());
// In combination with descendantDrawsContent, opacity != 1 forces the layer to have a new renderSurface.
renderSurface1->setOpacity(0.5);
renderSurface2->setOpacity(0.33f);
// All layers in the tree are initialized with an anchor at .25 and a size of (10,10).
// matrix "A" is the composite layer transform used in all layers, centered about the anchor point
// matrix "B" is the sublayer transform used in all layers, centered about the center position of the layer.
// matrix "R" is the composite replica transform used in all replica layers.
//
// x component tests that layerTransform and sublayerTransform are done in the right order (translation and scale are noncommutative).
// y component has a translation by 1 for every ancestor, which indicates the "depth" of the layer in the hierarchy.
WebTransformationMatrix translationToAnchor;
translationToAnchor.translate(2.5, 0);
WebTransformationMatrix translationToCenter;
translationToCenter.translate(5, 5);
WebTransformationMatrix layerTransform;
layerTransform.translate(1, 1);
WebTransformationMatrix sublayerTransform;
sublayerTransform.scale3d(10, 1, 1);
WebTransformationMatrix replicaLayerTransform;
replicaLayerTransform.scale3d(-2, 5, 1);
WebTransformationMatrix A = translationToAnchor * layerTransform * translationToAnchor.inverse();
WebTransformationMatrix B = translationToCenter * sublayerTransform * translationToCenter.inverse();
WebTransformationMatrix R = A * translationToAnchor * replicaLayerTransform * translationToAnchor.inverse();
WebTransformationMatrix identityMatrix;
setLayerPropertiesForTesting(parent.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(renderSurface1.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(renderSurface2.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(childOfRoot.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(childOfRS1.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(childOfRS2.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChildOfRoot.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChildOfRS1.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChildOfRS2.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(replicaOfRS1.get(), replicaLayerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(), false);
setLayerPropertiesForTesting(replicaOfRS2.get(), replicaLayerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(0, 0), IntSize(), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
// Only layers that are associated with render surfaces should have an actual renderSurface() value.
//
ASSERT_TRUE(parent->renderSurface());
ASSERT_FALSE(childOfRoot->renderSurface());
ASSERT_FALSE(grandChildOfRoot->renderSurface());
ASSERT_TRUE(renderSurface1->renderSurface());
ASSERT_FALSE(childOfRS1->renderSurface());
ASSERT_FALSE(grandChildOfRS1->renderSurface());
ASSERT_TRUE(renderSurface2->renderSurface());
ASSERT_FALSE(childOfRS2->renderSurface());
ASSERT_FALSE(grandChildOfRS2->renderSurface());
// Verify all renderTarget accessors
//
EXPECT_EQ(parent, parent->renderTarget());
EXPECT_EQ(parent, childOfRoot->renderTarget());
EXPECT_EQ(parent, grandChildOfRoot->renderTarget());
EXPECT_EQ(renderSurface1, renderSurface1->renderTarget());
EXPECT_EQ(renderSurface1, childOfRS1->renderTarget());
EXPECT_EQ(renderSurface1, grandChildOfRS1->renderTarget());
EXPECT_EQ(renderSurface2, renderSurface2->renderTarget());
EXPECT_EQ(renderSurface2, childOfRS2->renderTarget());
EXPECT_EQ(renderSurface2, grandChildOfRS2->renderTarget());
// Verify layer draw transforms
// note that draw transforms are described with respect to the nearest ancestor render surface
// but screen space transforms are described with respect to the root.
//
EXPECT_TRANSFORMATION_MATRIX_EQ(A, parent->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A, childOfRoot->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * A, grandChildOfRoot->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, renderSurface1->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(B * A, childOfRS1->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(B * A * B * A, grandChildOfRS1->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, renderSurface2->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(B * A, childOfRS2->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(B * A * B * A, grandChildOfRS2->drawTransform());
// Verify layer screen-space transforms
//
EXPECT_TRANSFORMATION_MATRIX_EQ(A, parent->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A, childOfRoot->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * A, grandChildOfRoot->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A, renderSurface1->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * A, childOfRS1->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * A * B * A, grandChildOfRS1->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * A, renderSurface2->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * A * B * A, childOfRS2->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * A * B * A * B * A, grandChildOfRS2->screenSpaceTransform());
// Verify render surface transforms.
//
// Draw transform of render surface 1 is described with respect to root.
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A, renderSurface1->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * R, renderSurface1->renderSurface()->replicaDrawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A, renderSurface1->renderSurface()->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * R, renderSurface1->renderSurface()->replicaScreenSpaceTransform());
// Draw transform of render surface 2 is described with respect to render surface 2.
EXPECT_TRANSFORMATION_MATRIX_EQ(B * A, renderSurface2->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(B * R, renderSurface2->renderSurface()->replicaDrawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * A, renderSurface2->renderSurface()->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(A * B * A * B * R, renderSurface2->renderSurface()->replicaScreenSpaceTransform());
// Sanity check. If these fail there is probably a bug in the test itself.
// It is expected that we correctly set up transforms so that the y-component of the screen-space transform
// encodes the "depth" of the layer in the tree.
EXPECT_FLOAT_EQ(1, parent->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(2, childOfRoot->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(3, grandChildOfRoot->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(2, renderSurface1->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(3, childOfRS1->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(4, grandChildOfRS1->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(3, renderSurface2->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(4, childOfRS2->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(5, grandChildOfRS2->screenSpaceTransform().m42());
}
TEST(CCLayerTreeHostCommonTest, verifyTransformsForFlatteningLayer)
{
// For layers that flatten their subtree, there should be an orthographic projection
// (for x and y values) in the middle of the transform sequence. Note that the way the
// code is currently implemented, it is not expected to use a canonical orthographic
// projection.
RefPtr<LayerChromium> root = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> grandChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
WebTransformationMatrix rotationAboutYAxis;
rotationAboutYAxis.rotate3d(0, 30, 0);
const WebTransformationMatrix identityMatrix;
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(100, 100), false);
setLayerPropertiesForTesting(child.get(), rotationAboutYAxis, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChild.get(), rotationAboutYAxis, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
root->addChild(child);
child->addChild(grandChild);
child->setForceRenderSurface(true);
// No layers in this test should preserve 3d.
ASSERT_FALSE(root->preserves3D());
ASSERT_FALSE(child->preserves3D());
ASSERT_FALSE(grandChild->preserves3D());
WebTransformationMatrix expectedChildDrawTransform = rotationAboutYAxis;
WebTransformationMatrix expectedChildScreenSpaceTransform = rotationAboutYAxis;
WebTransformationMatrix expectedGrandChildDrawTransform = rotationAboutYAxis; // draws onto child's renderSurface
WebTransformationMatrix expectedGrandChildScreenSpaceTransform = rotationAboutYAxis.to2dTransform() * rotationAboutYAxis;
executeCalculateDrawTransformsAndVisibility(root.get());
// The child's drawTransform should have been taken by its surface.
ASSERT_TRUE(child->renderSurface());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildDrawTransform, child->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildScreenSpaceTransform, child->renderSurface()->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildScreenSpaceTransform, child->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildDrawTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildScreenSpaceTransform, grandChild->screenSpaceTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyTransformsForDegenerateIntermediateLayer)
{
// A layer that is empty in one axis, but not the other, was accidentally skipping a necessary translation.
// Without that translation, the coordinate space of the layer's drawTransform is incorrect.
//
// Normally this isn't a problem, because the layer wouldn't be drawn anyway, but if that layer becomes a renderSurface, then
// its drawTransform is implicitly inherited by the rest of the subtree, which then is positioned incorrectly as a result.
RefPtr<LayerChromium> root = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> grandChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
// The child height is zero, but has non-zero width that should be accounted for while computing drawTransforms.
const WebTransformationMatrix identityMatrix;
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(100, 100), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 0), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
root->addChild(child);
child->addChild(grandChild);
child->setForceRenderSurface(true);
executeCalculateDrawTransformsAndVisibility(root.get());
ASSERT_TRUE(child->renderSurface());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, child->renderSurface()->drawTransform()); // This is the real test, the rest are sanity checks.
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(identityMatrix, grandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyRenderSurfaceListForRenderSurfaceWithClippedLayer)
{
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> renderSurface1 = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> child = adoptRef(new LayerChromiumWithForcedDrawsContent());
const WebTransformationMatrix identityMatrix;
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
setLayerPropertiesForTesting(renderSurface1.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint(30, 30), IntSize(10, 10), false);
parent->addChild(renderSurface1);
renderSurface1->addChild(child);
renderSurface1->setForceRenderSurface(true);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// The child layer's content is entirely outside the parent's clip rect, so the intermediate
// render surface should not be listed here, even if it was forced to be created. Render surfaces without children or visible
// content are unexpected at draw time (e.g. we might try to create a content texture of size 0).
ASSERT_TRUE(parent->renderSurface());
ASSERT_FALSE(renderSurface1->renderSurface());
EXPECT_EQ(1U, renderSurfaceLayerList.size());
}
TEST(CCLayerTreeHostCommonTest, verifyRenderSurfaceListForTransparentChild)
{
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> renderSurface1 = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> child = adoptRef(new LayerChromiumWithForcedDrawsContent());
const WebTransformationMatrix identityMatrix;
setLayerPropertiesForTesting(renderSurface1.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
parent->addChild(renderSurface1);
renderSurface1->addChild(child);
renderSurface1->setForceRenderSurface(true);
renderSurface1->setOpacity(0);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Since the layer is transparent, renderSurface1->renderSurface() should not have gotten added anywhere.
// Also, the drawable content rect should not have been extended by the children.
ASSERT_TRUE(parent->renderSurface());
EXPECT_EQ(0U, parent->renderSurface()->layerList().size());
EXPECT_EQ(1U, renderSurfaceLayerList.size());
EXPECT_EQ(parent->id(), renderSurfaceLayerList[0]->id());
EXPECT_EQ(IntRect(), parent->drawableContentRect());
}
TEST(CCLayerTreeHostCommonTest, verifyForceRenderSurface)
{
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> renderSurface1 = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> child = adoptRef(new LayerChromiumWithForcedDrawsContent());
renderSurface1->setForceRenderSurface(true);
const WebTransformationMatrix identityMatrix;
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
setLayerPropertiesForTesting(renderSurface1.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint::zero(), FloatPoint::zero(), IntSize(10, 10), false);
parent->addChild(renderSurface1);
renderSurface1->addChild(child);
// Sanity check before the actual test
EXPECT_FALSE(parent->renderSurface());
EXPECT_FALSE(renderSurface1->renderSurface());
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
// The root layer always creates a renderSurface
EXPECT_TRUE(parent->renderSurface());
EXPECT_TRUE(renderSurface1->renderSurface());
EXPECT_EQ(2U, renderSurfaceLayerList.size());
renderSurfaceLayerList.clear();
renderSurface1->setForceRenderSurface(false);
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
EXPECT_TRUE(parent->renderSurface());
EXPECT_FALSE(renderSurface1->renderSurface());
EXPECT_EQ(1U, renderSurfaceLayerList.size());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerWithDirectContainer)
{
// This test checks for correct scroll compensation when the fixed-position container
// is the direct parent of the fixed-position layer.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
child->setIsContainerForFixedPositionLayers(true);
grandChild->setFixedToContainerLayer(true);
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
WebTransformationMatrix expectedGrandChildTransform = expectedChildTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
// Case 2: scrollDelta of 10, 10
child->setScrollDelta(IntSize(10, 10));
executeCalculateDrawTransformsAndVisibility(root.get());
// Here the child is affected by scrollDelta, but the fixed position grandChild should not be affected.
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, -10);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerWithTransformedDirectContainer)
{
// This test checks for correct scroll compensation when the fixed-position container
// is the direct parent of the fixed-position layer, but that container is transformed.
// In this case, the fixed position element inherits the container's transform,
// but the scrollDelta that has to be undone should not be affected by that transform.
//
// Transforms are in general non-commutative; using something like a non-uniform scale
// helps to verify that translations and non-uniform scales are applied in the correct
// order.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
// This scale will cause child and grandChild to be effectively 200 x 800 with respect to the renderTarget.
WebTransformationMatrix nonUniformScale;
nonUniformScale.scaleNonUniform(2, 8);
child->setTransform(nonUniformScale);
child->setIsContainerForFixedPositionLayers(true);
grandChild->setFixedToContainerLayer(true);
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
expectedChildTransform.multiply(nonUniformScale);
WebTransformationMatrix expectedGrandChildTransform = expectedChildTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
// Case 2: scrollDelta of 10, 20
child->setScrollDelta(IntSize(10, 20));
executeCalculateDrawTransformsAndVisibility(root.get());
// The child should be affected by scrollDelta, but the fixed position grandChild should not be affected.
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, -20); // scrollDelta
expectedChildTransform.multiply(nonUniformScale);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerWithDistantContainer)
{
// This test checks for correct scroll compensation when the fixed-position container
// is NOT the direct parent of the fixed-position layer.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
CCLayerImpl* greatGrandChild = grandChild->children()[0].get();
child->setIsContainerForFixedPositionLayers(true);
grandChild->setPosition(FloatPoint(8, 6));
greatGrandChild->setFixedToContainerLayer(true);
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
WebTransformationMatrix expectedGrandChildTransform;
expectedGrandChildTransform.translate(8, 6);
WebTransformationMatrix expectedGreatGrandChildTransform = expectedGrandChildTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
// Case 2: scrollDelta of 10, 10
child->setScrollDelta(IntSize(10, 10));
executeCalculateDrawTransformsAndVisibility(root.get());
// Here the child and grandChild are affected by scrollDelta, but the fixed position greatGrandChild should not be affected.
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, -10);
expectedGrandChildTransform.makeIdentity();
expectedGrandChildTransform.translate(-2, -4);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerWithDistantContainerAndTransforms)
{
// This test checks for correct scroll compensation when the fixed-position container
// is NOT the direct parent of the fixed-position layer, and the hierarchy has various
// transforms that have to be processed in the correct order.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
CCLayerImpl* greatGrandChild = grandChild->children()[0].get();
WebTransformationMatrix rotationAboutZ;
rotationAboutZ.rotate3d(0, 0, 90);
child->setIsContainerForFixedPositionLayers(true);
child->setTransform(rotationAboutZ);
grandChild->setPosition(FloatPoint(8, 6));
grandChild->setTransform(rotationAboutZ);
greatGrandChild->setFixedToContainerLayer(true); // greatGrandChild is positioned upside-down with respect to the renderTarget.
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
expectedChildTransform.multiply(rotationAboutZ);
WebTransformationMatrix expectedGrandChildTransform;
expectedGrandChildTransform.multiply(rotationAboutZ); // child's local transform is inherited
expectedGrandChildTransform.translate(8, 6); // translation because of position occurs before layer's local transform.
expectedGrandChildTransform.multiply(rotationAboutZ); // grandChild's local transform
WebTransformationMatrix expectedGreatGrandChildTransform = expectedGrandChildTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
// Case 2: scrollDelta of 10, 20
child->setScrollDelta(IntSize(10, 20));
executeCalculateDrawTransformsAndVisibility(root.get());
// Here the child and grandChild are affected by scrollDelta, but the fixed position greatGrandChild should not be affected.
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, -20); // scrollDelta
expectedChildTransform.multiply(rotationAboutZ);
expectedGrandChildTransform.makeIdentity();
expectedGrandChildTransform.translate(-10, -20); // child's scrollDelta is inherited
expectedGrandChildTransform.multiply(rotationAboutZ); // child's local transform is inherited
expectedGrandChildTransform.translate(8, 6); // translation because of position occurs before layer's local transform.
expectedGrandChildTransform.multiply(rotationAboutZ); // grandChild's local transform
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerWithMultipleScrollDeltas)
{
// This test checks for correct scroll compensation when the fixed-position container
// has multiple ancestors that have nonzero scrollDelta before reaching the space where the layer is fixed.
// In this test, each scrollDelta occurs in a different space because of each layer's local transform.
// This test checks for correct scroll compensation when the fixed-position container
// is NOT the direct parent of the fixed-position layer, and the hierarchy has various
// transforms that have to be processed in the correct order.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
CCLayerImpl* greatGrandChild = grandChild->children()[0].get();
WebTransformationMatrix rotationAboutZ;
rotationAboutZ.rotate3d(0, 0, 90);
child->setIsContainerForFixedPositionLayers(true);
child->setTransform(rotationAboutZ);
grandChild->setPosition(FloatPoint(8, 6));
grandChild->setTransform(rotationAboutZ);
greatGrandChild->setFixedToContainerLayer(true); // greatGrandChild is positioned upside-down with respect to the renderTarget.
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
expectedChildTransform.multiply(rotationAboutZ);
WebTransformationMatrix expectedGrandChildTransform;
expectedGrandChildTransform.multiply(rotationAboutZ); // child's local transform is inherited
expectedGrandChildTransform.translate(8, 6); // translation because of position occurs before layer's local transform.
expectedGrandChildTransform.multiply(rotationAboutZ); // grandChild's local transform
WebTransformationMatrix expectedGreatGrandChildTransform = expectedGrandChildTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
// Case 2: scrollDelta of 10, 20
child->setScrollDelta(IntSize(10, 0));
grandChild->setScrollDelta(IntSize(5, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
// Here the child and grandChild are affected by scrollDelta, but the fixed position greatGrandChild should not be affected.
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, 0); // scrollDelta
expectedChildTransform.multiply(rotationAboutZ);
expectedGrandChildTransform.makeIdentity();
expectedGrandChildTransform.translate(-10, 0); // child's scrollDelta is inherited
expectedGrandChildTransform.multiply(rotationAboutZ); // child's local transform is inherited
expectedGrandChildTransform.translate(-5, 0); // grandChild's scrollDelta
expectedGrandChildTransform.translate(8, 6); // translation because of position occurs before layer's local transform.
expectedGrandChildTransform.multiply(rotationAboutZ); // grandChild's local transform
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerWithIntermediateSurfaceAndTransforms)
{
// This test checks for correct scroll compensation when the fixed-position container
// contributes to a different renderSurface than the fixed-position layer. In this
// case, the surface drawTransforms also have to be accounted for when checking the
// scrollDelta.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
CCLayerImpl* greatGrandChild = grandChild->children()[0].get();
child->setIsContainerForFixedPositionLayers(true);
grandChild->setPosition(FloatPoint(8, 6));
grandChild->setForceRenderSurface(true);
greatGrandChild->setFixedToContainerLayer(true);
greatGrandChild->setDrawsContent(true);
WebTransformationMatrix rotationAboutZ;
rotationAboutZ.rotate3d(0, 0, 90);
grandChild->setTransform(rotationAboutZ);
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
WebTransformationMatrix expectedSurfaceDrawTransform;
expectedSurfaceDrawTransform.translate(8, 6);
expectedSurfaceDrawTransform.multiply(rotationAboutZ);
WebTransformationMatrix expectedGrandChildTransform;
WebTransformationMatrix expectedGreatGrandChildTransform;
ASSERT_TRUE(grandChild->renderSurface());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedSurfaceDrawTransform, grandChild->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
// Case 2: scrollDelta of 10, 30
child->setScrollDelta(IntSize(10, 30));
executeCalculateDrawTransformsAndVisibility(root.get());
// Here the grandChild remains unchanged, because it scrolls along with the
// renderSurface, and the translation is actually in the renderSurface. But, the fixed
// position greatGrandChild is more awkward: its actually being drawn with respect to
// the renderSurface, but it needs to remain fixed with resepct to a container beyond
// that surface. So, the net result is that, unlike previous tests where the fixed
// position layer's transform remains unchanged, here the fixed position layer's
// transform explicitly contains the translation that cancels out the scroll.
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, -30); // scrollDelta
expectedSurfaceDrawTransform.makeIdentity();
expectedSurfaceDrawTransform.translate(-10, -30); // scrollDelta
expectedSurfaceDrawTransform.translate(8, 6);
expectedSurfaceDrawTransform.multiply(rotationAboutZ);
// The rotation and its inverse are needed to place the scrollDelta compensation in
// the correct space. This test will fail if the rotation/inverse are backwards, too,
// so it requires perfect order of operations.
expectedGreatGrandChildTransform.makeIdentity();
expectedGreatGrandChildTransform.multiply(rotationAboutZ.inverse());
expectedGreatGrandChildTransform.translate(10, 30); // explicit canceling out the scrollDelta that gets embedded in the fixed position layer's surface.
expectedGreatGrandChildTransform.multiply(rotationAboutZ);
ASSERT_TRUE(grandChild->renderSurface());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedSurfaceDrawTransform, grandChild->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerWithMultipleIntermediateSurfaces)
{
// This test checks for correct scroll compensation when the fixed-position container
// contributes to a different renderSurface than the fixed-position layer, with
// additional renderSurfaces in-between. This checks that the conversion to ancestor
// surfaces is accumulated properly in the final matrix transform.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
CCLayerImpl* greatGrandChild = grandChild->children()[0].get();
// Add one more layer to the test tree for this scenario.
{
WebTransformationMatrix identity;
OwnPtr<CCLayerImpl> fixedPositionChild = CCLayerImpl::create(5);
setLayerPropertiesForTesting(fixedPositionChild.get(), identity, identity, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
greatGrandChild->addChild(fixedPositionChild.release());
}
CCLayerImpl* fixedPositionChild = greatGrandChild->children()[0].get();
// Actually set up the scenario here.
child->setIsContainerForFixedPositionLayers(true);
grandChild->setPosition(FloatPoint(8, 6));
grandChild->setForceRenderSurface(true);
greatGrandChild->setPosition(FloatPoint(40, 60));
greatGrandChild->setForceRenderSurface(true);
fixedPositionChild->setFixedToContainerLayer(true);
fixedPositionChild->setDrawsContent(true);
// The additional rotations, which are non-commutative with translations, help to
// verify that we have correct order-of-operations in the final scroll compensation.
// Note that rotating about the center of the layer ensures we do not accidentally
// clip away layers that we want to test.
WebTransformationMatrix rotationAboutZ;
rotationAboutZ.translate(50, 50);
rotationAboutZ.rotate3d(0, 0, 90);
rotationAboutZ.translate(-50, -50);
grandChild->setTransform(rotationAboutZ);
greatGrandChild->setTransform(rotationAboutZ);
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
WebTransformationMatrix expectedGrandChildSurfaceDrawTransform;
expectedGrandChildSurfaceDrawTransform.translate(8, 6);
expectedGrandChildSurfaceDrawTransform.multiply(rotationAboutZ);
WebTransformationMatrix expectedGrandChildTransform;
WebTransformationMatrix expectedGreatGrandChildSurfaceDrawTransform;
expectedGreatGrandChildSurfaceDrawTransform.translate(40, 60);
expectedGreatGrandChildSurfaceDrawTransform.multiply(rotationAboutZ);
WebTransformationMatrix expectedGreatGrandChildTransform;
WebTransformationMatrix expectedFixedPositionChildTransform;
ASSERT_TRUE(grandChild->renderSurface());
ASSERT_TRUE(greatGrandChild->renderSurface());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildSurfaceDrawTransform, grandChild->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildSurfaceDrawTransform, greatGrandChild->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedFixedPositionChildTransform, fixedPositionChild->drawTransform());
// Case 2: scrollDelta of 10, 30
child->setScrollDelta(IntSize(10, 30));
executeCalculateDrawTransformsAndVisibility(root.get());
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, -30); // scrollDelta
expectedGrandChildSurfaceDrawTransform.makeIdentity();
expectedGrandChildSurfaceDrawTransform.translate(-10, -30); // scrollDelta
expectedGrandChildSurfaceDrawTransform.translate(8, 6);
expectedGrandChildSurfaceDrawTransform.multiply(rotationAboutZ);
// grandChild, greatGrandChild, and greatGrandChild's surface are not expected to
// change, since they are all not fixed, and they are all drawn with respect to
// grandChild's surface that already has the scrollDelta accounted for.
// But the great-great grandchild, "fixedPositionChild", should have a transform that explicitly cancels out the scrollDelta.
// The expected transform is:
// compoundDrawTransform.inverse() * translate(positive scrollDelta) * compoundOriginTransform
WebTransformationMatrix compoundDrawTransform; // transform from greatGrandChildSurface's origin to the root surface.
compoundDrawTransform.translate(8, 6); // origin translation of grandChild
compoundDrawTransform.multiply(rotationAboutZ); // rotation of grandChild
compoundDrawTransform.translate(40, 60); // origin translation of greatGrandChild
compoundDrawTransform.multiply(rotationAboutZ); // rotation of greatGrandChild
expectedFixedPositionChildTransform.makeIdentity();
expectedFixedPositionChildTransform.multiply(compoundDrawTransform.inverse());
expectedFixedPositionChildTransform.translate(10, 30); // explicit canceling out the scrollDelta that gets embedded in the fixed position layer's surface.
expectedFixedPositionChildTransform.multiply(compoundDrawTransform);
ASSERT_TRUE(grandChild->renderSurface());
ASSERT_TRUE(greatGrandChild->renderSurface());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildSurfaceDrawTransform, grandChild->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildSurfaceDrawTransform, greatGrandChild->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGreatGrandChildTransform, greatGrandChild->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedFixedPositionChildTransform, fixedPositionChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerWithContainerLayerThatHasSurface)
{
// This test checks for correct scroll compensation when the fixed-position container
// itself has a renderSurface. In this case, the container layer should be treated
// like a layer that contributes to a renderTarget, and that renderTarget
// is completely irrelevant; it should not affect the scroll compensation.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
child->setIsContainerForFixedPositionLayers(true);
child->setForceRenderSurface(true);
grandChild->setFixedToContainerLayer(true);
grandChild->setDrawsContent(true);
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedSurfaceDrawTransform;
expectedSurfaceDrawTransform.translate(0, 0);
WebTransformationMatrix expectedChildTransform;
WebTransformationMatrix expectedGrandChildTransform;
ASSERT_TRUE(child->renderSurface());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedSurfaceDrawTransform, child->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
// Case 2: scrollDelta of 10, 10
child->setScrollDelta(IntSize(10, 10));
executeCalculateDrawTransformsAndVisibility(root.get());
// The surface is translated by scrollDelta, the child transform doesn't change
// because it scrolls along with the surface, but the fixed position grandChild
// needs to compensate for the scroll translation.
expectedSurfaceDrawTransform.makeIdentity();
expectedSurfaceDrawTransform.translate(-10, -10);
expectedGrandChildTransform.makeIdentity();
expectedGrandChildTransform.translate(10, 10);
ASSERT_TRUE(child->renderSurface());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedSurfaceDrawTransform, child->renderSurface()->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerThatIsAlsoFixedPositionContainer)
{
// This test checks the scenario where a fixed-position layer also happens to be a
// container itself for a descendant fixed position layer. In particular, the layer
// should not accidentally be fixed to itself.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
child->setIsContainerForFixedPositionLayers(true);
grandChild->setFixedToContainerLayer(true);
// This should not confuse the grandChild. If correct, the grandChild would still be considered fixed to its container (i.e. "child").
grandChild->setIsContainerForFixedPositionLayers(true);
// Case 1: scrollDelta of 0, 0
child->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
WebTransformationMatrix expectedGrandChildTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
// Case 2: scrollDelta of 10, 10
child->setScrollDelta(IntSize(10, 10));
executeCalculateDrawTransformsAndVisibility(root.get());
// Here the child is affected by scrollDelta, but the fixed position grandChild should not be affected.
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, -10);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyScrollCompensationForFixedPositionLayerThatHasNoContainer)
{
// This test checks scroll compensation when a fixed-position layer does not find any
// ancestor that is a "containerForFixedPositionLayers". In this situation, the layer should
// be fixed to the viewport -- not the rootLayer, which may have transforms of its own.
DebugScopedSetImplThread scopedImplThread;
OwnPtr<CCLayerImpl> root = createTreeForFixedPositionTests();
CCLayerImpl* child = root->children()[0].get();
CCLayerImpl* grandChild = child->children()[0].get();
WebTransformationMatrix rotationByZ;
rotationByZ.rotate3d(0, 0, 90);
root->setTransform(rotationByZ);
grandChild->setFixedToContainerLayer(true);
// Case 1: root scrollDelta of 0, 0
root->setScrollDelta(IntSize(0, 0));
executeCalculateDrawTransformsAndVisibility(root.get());
WebTransformationMatrix expectedChildTransform;
expectedChildTransform.multiply(rotationByZ);
WebTransformationMatrix expectedGrandChildTransform;
expectedGrandChildTransform.multiply(rotationByZ);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
// Case 2: root scrollDelta of 10, 10
root->setScrollDelta(IntSize(10, 10));
executeCalculateDrawTransformsAndVisibility(root.get());
// Here the child is affected by scrollDelta, but the fixed position grandChild should not be affected.
expectedChildTransform.makeIdentity();
expectedChildTransform.translate(-10, -10); // the scrollDelta
expectedChildTransform.multiply(rotationByZ);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedGrandChildTransform, grandChild->drawTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyClipRectCullsRenderSurfaces)
{
// The entire subtree of layers that are outside the clipRect should be culled away,
// and should not affect the renderSurfaceLayerList.
//
// The test tree is set up as follows:
// - all layers except the leafNodes are forced to be a new renderSurface that have something to draw.
// - parent is a large container layer.
// - child has masksToBounds=true to cause clipping.
// - grandChild is positioned outside of the child's bounds
// - greatGrandChild is also kept outside child's bounds.
//
// In this configuration, grandChild and greatGrandChild are completely outside the
// clipRect, and they should never get scheduled on the list of renderSurfaces.
//
const WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromium> grandChild = LayerChromium::create();
RefPtr<LayerChromium> greatGrandChild = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> leafNode1 = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> leafNode2 = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(child);
child->addChild(grandChild);
grandChild->addChild(greatGrandChild);
// leafNode1 ensures that parent and child are kept on the renderSurfaceLayerList,
// even though grandChild and greatGrandChild should be clipped.
child->addChild(leafNode1);
greatGrandChild->addChild(leafNode2);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(500, 500), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(20, 20), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(45, 45), IntSize(10, 10), false);
setLayerPropertiesForTesting(greatGrandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(leafNode1.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(500, 500), false);
setLayerPropertiesForTesting(leafNode2.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(20, 20), false);
child->setMasksToBounds(true);
child->setOpacity(0.4f);
grandChild->setOpacity(0.5);
greatGrandChild->setOpacity(0.4f);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
ASSERT_EQ(2U, renderSurfaceLayerList.size());
EXPECT_EQ(parent->id(), renderSurfaceLayerList[0]->id());
EXPECT_EQ(child->id(), renderSurfaceLayerList[1]->id());
}
TEST(CCLayerTreeHostCommonTest, verifyClipRectCullsSurfaceWithoutVisibleContent)
{
// When a renderSurface has a clipRect, it is used to clip the contentRect
// of the surface. When the renderSurface is animating its transforms, then
// the contentRect's position in the clipRect is not defined on the main
// thread, and its contentRect should not be clipped.
// The test tree is set up as follows:
// - parent is a container layer that masksToBounds=true to cause clipping.
// - child is a renderSurface, which has a clipRect set to the bounds of the parent.
// - grandChild is a renderSurface, and the only visible content in child. It is positioned outside of the clipRect from parent.
// In this configuration, grandChild should be outside the clipped
// contentRect of the child, making grandChild not appear in the
// renderSurfaceLayerList. However, when we place an animation on the child,
// this clipping should be avoided and we should keep the grandChild
// in the renderSurfaceLayerList.
const WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromium> grandChild = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> leafNode = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(child);
child->addChild(grandChild);
grandChild->addChild(leafNode);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(20, 20), false);
setLayerPropertiesForTesting(grandChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(200, 200), IntSize(10, 10), false);
setLayerPropertiesForTesting(leafNode.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 10), false);
parent->setMasksToBounds(true);
child->setOpacity(0.4f);
grandChild->setOpacity(0.4f);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
// Without an animation, we should cull child and grandChild from the renderSurfaceLayerList.
ASSERT_EQ(1U, renderSurfaceLayerList.size());
EXPECT_EQ(parent->id(), renderSurfaceLayerList[0]->id());
// Now put an animating transform on child.
addAnimatedTransformToController(*child->layerAnimationController(), 10, 30, 0);
parent->clearRenderSurface();
child->clearRenderSurface();
grandChild->clearRenderSurface();
renderSurfaceLayerList.clear();
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
// With an animating transform, we should keep child and grandChild in the renderSurfaceLayerList.
ASSERT_EQ(3U, renderSurfaceLayerList.size());
EXPECT_EQ(parent->id(), renderSurfaceLayerList[0]->id());
EXPECT_EQ(child->id(), renderSurfaceLayerList[1]->id());
EXPECT_EQ(grandChild->id(), renderSurfaceLayerList[2]->id());
}
TEST(CCLayerTreeHostCommonTest, verifyDrawableContentRectForLayers)
{
// Verify that layers get the appropriate drawableContentRect when their parent masksToBounds is true.
//
// grandChild1 - completely inside the region; drawableContentRect should be the layer rect expressed in target space.
// grandChild2 - partially clipped but NOT masksToBounds; the clipRect will be the intersection of layerBounds and the mask region.
// grandChild3 - partially clipped and masksToBounds; the drawableContentRect will still be the intersection of layerBounds and the mask region.
// grandChild4 - outside parent's clipRect; the drawableContentRect should be empty.
//
const WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromium> grandChild1 = LayerChromium::create();
RefPtr<LayerChromium> grandChild2 = LayerChromium::create();
RefPtr<LayerChromium> grandChild3 = LayerChromium::create();
RefPtr<LayerChromium> grandChild4 = LayerChromium::create();
parent->addChild(child);
child->addChild(grandChild1);
child->addChild(grandChild2);
child->addChild(grandChild3);
child->addChild(grandChild4);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(500, 500), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(20, 20), false);
setLayerPropertiesForTesting(grandChild1.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(5, 5), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChild2.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(15, 15), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChild3.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(15, 15), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChild4.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(45, 45), IntSize(10, 10), false);
child->setMasksToBounds(true);
grandChild3->setMasksToBounds(true);
// Force everyone to be a render surface.
child->setOpacity(0.4f);
grandChild1->setOpacity(0.5);
grandChild2->setOpacity(0.5);
grandChild3->setOpacity(0.5);
grandChild4->setOpacity(0.5);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
EXPECT_INT_RECT_EQ(IntRect(IntPoint(5, 5), IntSize(10, 10)), grandChild1->drawableContentRect());
EXPECT_INT_RECT_EQ(IntRect(IntPoint(15, 15), IntSize(5, 5)), grandChild3->drawableContentRect());
EXPECT_INT_RECT_EQ(IntRect(IntPoint(15, 15), IntSize(5, 5)), grandChild3->drawableContentRect());
EXPECT_TRUE(grandChild4->drawableContentRect().isEmpty());
}
TEST(CCLayerTreeHostCommonTest, verifyClipRectIsPropagatedCorrectlyToSurfaces)
{
// Verify that renderSurfaces (and their layers) get the appropriate clipRects when their parent masksToBounds is true.
//
// Layers that own renderSurfaces (at least for now) do not inherit any clipping;
// instead the surface will enforce the clip for the entire subtree. They may still
// have a clipRect of their own layer bounds, however, if masksToBounds was true.
//
const WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromium> grandChild1 = LayerChromium::create();
RefPtr<LayerChromium> grandChild2 = LayerChromium::create();
RefPtr<LayerChromium> grandChild3 = LayerChromium::create();
RefPtr<LayerChromium> grandChild4 = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> leafNode1 = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> leafNode2 = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> leafNode3 = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> leafNode4 = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(child);
child->addChild(grandChild1);
child->addChild(grandChild2);
child->addChild(grandChild3);
child->addChild(grandChild4);
// the leaf nodes ensure that these grandChildren become renderSurfaces for this test.
grandChild1->addChild(leafNode1);
grandChild2->addChild(leafNode2);
grandChild3->addChild(leafNode3);
grandChild4->addChild(leafNode4);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(500, 500), false);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(20, 20), false);
setLayerPropertiesForTesting(grandChild1.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(5, 5), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChild2.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(15, 15), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChild3.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(15, 15), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChild4.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(45, 45), IntSize(10, 10), false);
setLayerPropertiesForTesting(leafNode1.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(leafNode2.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(leafNode3.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(leafNode4.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 10), false);
child->setMasksToBounds(true);
grandChild3->setMasksToBounds(true);
grandChild4->setMasksToBounds(true);
// Force everyone to be a render surface.
child->setOpacity(0.4f);
grandChild1->setOpacity(0.5);
grandChild2->setOpacity(0.5);
grandChild3->setOpacity(0.5);
grandChild4->setOpacity(0.5);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
ASSERT_TRUE(grandChild1->renderSurface());
ASSERT_TRUE(grandChild2->renderSurface());
ASSERT_TRUE(grandChild3->renderSurface());
EXPECT_FALSE(grandChild4->renderSurface()); // Because grandChild4 is entirely clipped, it is expected to not have a renderSurface.
// Surfaces are clipped by their parent, but un-affected by the owning layer's masksToBounds.
EXPECT_INT_RECT_EQ(IntRect(IntPoint(0, 0), IntSize(20, 20)), grandChild1->renderSurface()->clipRect());
EXPECT_INT_RECT_EQ(IntRect(IntPoint(0, 0), IntSize(20, 20)), grandChild2->renderSurface()->clipRect());
EXPECT_INT_RECT_EQ(IntRect(IntPoint(0, 0), IntSize(20, 20)), grandChild3->renderSurface()->clipRect());
}
TEST(CCLayerTreeHostCommonTest, verifyAnimationsForRenderSurfaceHierarchy)
{
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromium> renderSurface1 = LayerChromium::create();
RefPtr<LayerChromium> renderSurface2 = LayerChromium::create();
RefPtr<LayerChromium> childOfRoot = LayerChromium::create();
RefPtr<LayerChromium> childOfRS1 = LayerChromium::create();
RefPtr<LayerChromium> childOfRS2 = LayerChromium::create();
RefPtr<LayerChromium> grandChildOfRoot = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> grandChildOfRS1 = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> grandChildOfRS2 = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(renderSurface1);
parent->addChild(childOfRoot);
renderSurface1->addChild(childOfRS1);
renderSurface1->addChild(renderSurface2);
renderSurface2->addChild(childOfRS2);
childOfRoot->addChild(grandChildOfRoot);
childOfRS1->addChild(grandChildOfRS1);
childOfRS2->addChild(grandChildOfRS2);
// Make our render surfaces.
renderSurface1->setForceRenderSurface(true);
renderSurface2->setForceRenderSurface(true);
// Put an animated opacity on the render surface.
addOpacityTransitionToController(*renderSurface1->layerAnimationController(), 10, 1, 0, false);
// Also put an animated opacity on a layer without descendants.
addOpacityTransitionToController(*grandChildOfRoot->layerAnimationController(), 10, 1, 0, false);
WebTransformationMatrix layerTransform;
layerTransform.translate(1, 1);
WebTransformationMatrix sublayerTransform;
sublayerTransform.scale3d(10, 1, 1);
// Put a transform animation on the render surface.
addAnimatedTransformToController(*renderSurface2->layerAnimationController(), 10, 30, 0);
// Also put transform animations on grandChildOfRoot, and grandChildOfRS2
addAnimatedTransformToController(*grandChildOfRoot->layerAnimationController(), 10, 30, 0);
addAnimatedTransformToController(*grandChildOfRS2->layerAnimationController(), 10, 30, 0);
setLayerPropertiesForTesting(parent.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(renderSurface1.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(renderSurface2.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(childOfRoot.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(childOfRS1.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(childOfRS2.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChildOfRoot.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChildOfRS1.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
setLayerPropertiesForTesting(grandChildOfRS2.get(), layerTransform, sublayerTransform, FloatPoint(0.25, 0), FloatPoint(2.5, 0), IntSize(10, 10), false);
executeCalculateDrawTransformsAndVisibility(parent.get());
// Only layers that are associated with render surfaces should have an actual renderSurface() value.
//
ASSERT_TRUE(parent->renderSurface());
ASSERT_FALSE(childOfRoot->renderSurface());
ASSERT_FALSE(grandChildOfRoot->renderSurface());
ASSERT_TRUE(renderSurface1->renderSurface());
ASSERT_FALSE(childOfRS1->renderSurface());
ASSERT_FALSE(grandChildOfRS1->renderSurface());
ASSERT_TRUE(renderSurface2->renderSurface());
ASSERT_FALSE(childOfRS2->renderSurface());
ASSERT_FALSE(grandChildOfRS2->renderSurface());
// Verify all renderTarget accessors
//
EXPECT_EQ(parent, parent->renderTarget());
EXPECT_EQ(parent, childOfRoot->renderTarget());
EXPECT_EQ(parent, grandChildOfRoot->renderTarget());
EXPECT_EQ(renderSurface1, renderSurface1->renderTarget());
EXPECT_EQ(renderSurface1, childOfRS1->renderTarget());
EXPECT_EQ(renderSurface1, grandChildOfRS1->renderTarget());
EXPECT_EQ(renderSurface2, renderSurface2->renderTarget());
EXPECT_EQ(renderSurface2, childOfRS2->renderTarget());
EXPECT_EQ(renderSurface2, grandChildOfRS2->renderTarget());
// Verify drawOpacityIsAnimating values
//
EXPECT_FALSE(parent->drawOpacityIsAnimating());
EXPECT_FALSE(childOfRoot->drawOpacityIsAnimating());
EXPECT_TRUE(grandChildOfRoot->drawOpacityIsAnimating());
EXPECT_FALSE(renderSurface1->drawOpacityIsAnimating());
EXPECT_TRUE(renderSurface1->renderSurface()->drawOpacityIsAnimating());
EXPECT_FALSE(childOfRS1->drawOpacityIsAnimating());
EXPECT_FALSE(grandChildOfRS1->drawOpacityIsAnimating());
EXPECT_FALSE(renderSurface2->drawOpacityIsAnimating());
EXPECT_FALSE(renderSurface2->renderSurface()->drawOpacityIsAnimating());
EXPECT_FALSE(childOfRS2->drawOpacityIsAnimating());
EXPECT_FALSE(grandChildOfRS2->drawOpacityIsAnimating());
// Verify drawTransformsAnimatingInTarget values
//
EXPECT_FALSE(parent->drawTransformIsAnimating());
EXPECT_FALSE(childOfRoot->drawTransformIsAnimating());
EXPECT_TRUE(grandChildOfRoot->drawTransformIsAnimating());
EXPECT_FALSE(renderSurface1->drawTransformIsAnimating());
EXPECT_FALSE(renderSurface1->renderSurface()->targetSurfaceTransformsAreAnimating());
EXPECT_FALSE(childOfRS1->drawTransformIsAnimating());
EXPECT_FALSE(grandChildOfRS1->drawTransformIsAnimating());
EXPECT_FALSE(renderSurface2->drawTransformIsAnimating());
EXPECT_TRUE(renderSurface2->renderSurface()->targetSurfaceTransformsAreAnimating());
EXPECT_FALSE(childOfRS2->drawTransformIsAnimating());
EXPECT_TRUE(grandChildOfRS2->drawTransformIsAnimating());
// Verify drawTransformsAnimatingInScreen values
//
EXPECT_FALSE(parent->screenSpaceTransformIsAnimating());
EXPECT_FALSE(childOfRoot->screenSpaceTransformIsAnimating());
EXPECT_TRUE(grandChildOfRoot->screenSpaceTransformIsAnimating());
EXPECT_FALSE(renderSurface1->screenSpaceTransformIsAnimating());
EXPECT_FALSE(renderSurface1->renderSurface()->screenSpaceTransformsAreAnimating());
EXPECT_FALSE(childOfRS1->screenSpaceTransformIsAnimating());
EXPECT_FALSE(grandChildOfRS1->screenSpaceTransformIsAnimating());
EXPECT_TRUE(renderSurface2->screenSpaceTransformIsAnimating());
EXPECT_TRUE(renderSurface2->renderSurface()->screenSpaceTransformsAreAnimating());
EXPECT_TRUE(childOfRS2->screenSpaceTransformIsAnimating());
EXPECT_TRUE(grandChildOfRS2->screenSpaceTransformIsAnimating());
// Sanity check. If these fail there is probably a bug in the test itself.
// It is expected that we correctly set up transforms so that the y-component of the screen-space transform
// encodes the "depth" of the layer in the tree.
EXPECT_FLOAT_EQ(1, parent->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(2, childOfRoot->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(3, grandChildOfRoot->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(2, renderSurface1->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(3, childOfRS1->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(4, grandChildOfRS1->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(3, renderSurface2->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(4, childOfRS2->screenSpaceTransform().m42());
EXPECT_FLOAT_EQ(5, grandChildOfRS2->screenSpaceTransform().m42());
}
TEST(CCLayerTreeHostCommonTest, verifyVisibleRectForIdentityTransform)
{
// Test the calculateVisibleRect() function works correctly for identity transforms.
IntRect targetSurfaceRect = IntRect(IntPoint(0, 0), IntSize(100, 100));
WebTransformationMatrix layerToSurfaceTransform;
// Case 1: Layer is contained within the surface.
IntRect layerContentRect = IntRect(IntPoint(10, 10), IntSize(30, 30));
IntRect expected = IntRect(IntPoint(10, 10), IntSize(30, 30));
IntRect actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
// Case 2: Layer is outside the surface rect.
layerContentRect = IntRect(IntPoint(120, 120), IntSize(30, 30));
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_TRUE(actual.isEmpty());
// Case 3: Layer is partially overlapping the surface rect.
layerContentRect = IntRect(IntPoint(80, 80), IntSize(30, 30));
expected = IntRect(IntPoint(80, 80), IntSize(20, 20));
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
}
TEST(CCLayerTreeHostCommonTest, verifyVisibleRectForTranslations)
{
// Test the calculateVisibleRect() function works correctly for scaling transforms.
IntRect targetSurfaceRect = IntRect(IntPoint(0, 0), IntSize(100, 100));
IntRect layerContentRect = IntRect(IntPoint(0, 0), IntSize(30, 30));
WebTransformationMatrix layerToSurfaceTransform;
// Case 1: Layer is contained within the surface.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.translate(10, 10);
IntRect expected = IntRect(IntPoint(0, 0), IntSize(30, 30));
IntRect actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
// Case 2: Layer is outside the surface rect.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.translate(120, 120);
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_TRUE(actual.isEmpty());
// Case 3: Layer is partially overlapping the surface rect.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.translate(80, 80);
expected = IntRect(IntPoint(0, 0), IntSize(20, 20));
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
}
TEST(CCLayerTreeHostCommonTest, verifyVisibleRectFor2DRotations)
{
// Test the calculateVisibleRect() function works correctly for rotations about z-axis (i.e. 2D rotations).
// Remember that calculateVisibleRect() should return the visible rect in the layer's space.
IntRect targetSurfaceRect = IntRect(IntPoint(0, 0), IntSize(100, 100));
IntRect layerContentRect = IntRect(IntPoint(0, 0), IntSize(30, 30));
WebTransformationMatrix layerToSurfaceTransform;
// Case 1: Layer is contained within the surface.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.translate(50, 50);
layerToSurfaceTransform.rotate(45);
IntRect expected = IntRect(IntPoint(0, 0), IntSize(30, 30));
IntRect actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
// Case 2: Layer is outside the surface rect.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.translate(-50, 0);
layerToSurfaceTransform.rotate(45);
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_TRUE(actual.isEmpty());
// Case 3: The layer is rotated about its top-left corner. In surface space, the layer
// is oriented diagonally, with the left half outside of the renderSurface. In
// this case, the visible rect should still be the entire layer (remember the
// visible rect is computed in layer space); both the top-left and
// bottom-right corners of the layer are still visible.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.rotate(45);
expected = IntRect(IntPoint(0, 0), IntSize(30, 30));
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
// Case 4: The layer is rotated about its top-left corner, and translated upwards. In
// surface space, the layer is oriented diagonally, with only the top corner
// of the surface overlapping the layer. In layer space, the render surface
// overlaps the right side of the layer. The visible rect should be the
// layer's right half.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.translate(0, -sqrt(2.0) * 15);
layerToSurfaceTransform.rotate(45);
expected = IntRect(IntPoint(15, 0), IntSize(15, 30)); // right half of layer bounds.
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
}
TEST(CCLayerTreeHostCommonTest, verifyVisibleRectFor3dOrthographicTransform)
{
// Test that the calculateVisibleRect() function works correctly for 3d transforms.
IntRect targetSurfaceRect = IntRect(IntPoint(0, 0), IntSize(100, 100));
IntRect layerContentRect = IntRect(IntPoint(0, 0), IntSize(100, 100));
WebTransformationMatrix layerToSurfaceTransform;
// Case 1: Orthographic projection of a layer rotated about y-axis by 45 degrees, should be fully contained in the renderSurface.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.rotate3d(0, 45, 0);
IntRect expected = IntRect(IntPoint(0, 0), IntSize(100, 100));
IntRect actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
// Case 2: Orthographic projection of a layer rotated about y-axis by 45 degrees, but
// shifted to the side so only the right-half the layer would be visible on
// the surface.
double halfWidthOfRotatedLayer = (100 / sqrt(2.0)) * 0.5; // 100 is the un-rotated layer width; divided by sqrt(2) is the rotated width.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.translate(-halfWidthOfRotatedLayer, 0);
layerToSurfaceTransform.rotate3d(0, 45, 0); // rotates about the left edge of the layer
expected = IntRect(IntPoint(50, 0), IntSize(50, 100)); // right half of the layer.
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
}
TEST(CCLayerTreeHostCommonTest, verifyVisibleRectFor3dPerspectiveTransform)
{
// Test the calculateVisibleRect() function works correctly when the layer has a
// perspective projection onto the target surface.
IntRect targetSurfaceRect = IntRect(IntPoint(0, 0), IntSize(100, 100));
IntRect layerContentRect = IntRect(IntPoint(-50, -50), IntSize(200, 200));
WebTransformationMatrix layerToSurfaceTransform;
// Case 1: Even though the layer is twice as large as the surface, due to perspective
// foreshortening, the layer will fit fully in the surface when its translated
// more than the perspective amount.
layerToSurfaceTransform.makeIdentity();
// The following sequence of transforms applies the perspective about the center of the surface.
layerToSurfaceTransform.translate(50, 50);
layerToSurfaceTransform.applyPerspective(9);
layerToSurfaceTransform.translate(-50, -50);
// This translate places the layer in front of the surface's projection plane.
layerToSurfaceTransform.translate3d(0, 0, -27);
IntRect expected = IntRect(IntPoint(-50, -50), IntSize(200, 200));
IntRect actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
// Case 2: same projection as before, except that the layer is also translated to the
// side, so that only the right half of the layer should be visible.
//
// Explanation of expected result:
// The perspective ratio is (z distance between layer and camera origin) / (z distance between projection plane and camera origin) == ((-27 - 9) / 9)
// Then, by similar triangles, if we want to move a layer by translating -50 units in projected surface units (so that only half of it is
// visible), then we would need to translate by (-36 / 9) * -50 == -200 in the layer's units.
//
layerToSurfaceTransform.translate3d(-200, 0, 0);
expected = IntRect(IntPoint(50, -50), IntSize(100, 200)); // The right half of the layer's bounding rect.
actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
}
TEST(CCLayerTreeHostCommonTest, verifyVisibleRectFor3dOrthographicIsNotClippedBehindSurface)
{
// There is currently no explicit concept of an orthographic projection plane in our
// code (nor in the CSS spec to my knowledge). Therefore, layers that are technically
// behind the surface in an orthographic world should not be clipped when they are
// flattened to the surface.
IntRect targetSurfaceRect = IntRect(IntPoint(0, 0), IntSize(100, 100));
IntRect layerContentRect = IntRect(IntPoint(0, 0), IntSize(100, 100));
WebTransformationMatrix layerToSurfaceTransform;
// This sequence of transforms effectively rotates the layer about the y-axis at the
// center of the layer.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.translate(50, 0);
layerToSurfaceTransform.rotate3d(0, 45, 0);
layerToSurfaceTransform.translate(-50, 0);
IntRect expected = IntRect(IntPoint(0, 0), IntSize(100, 100));
IntRect actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
}
TEST(CCLayerTreeHostCommonTest, verifyVisibleRectFor3dPerspectiveWhenClippedByW)
{
// Test the calculateVisibleRect() function works correctly when projecting a surface
// onto a layer, but the layer is partially behind the camera (not just behind the
// projection plane). In this case, the cartesian coordinates may seem to be valid,
// but actually they are not. The visibleRect needs to be properly clipped by the
// w = 0 plane in homogeneous coordinates before converting to cartesian coordinates.
IntRect targetSurfaceRect = IntRect(IntPoint(-50, -50), IntSize(100, 100));
IntRect layerContentRect = IntRect(IntPoint(-10, -1), IntSize(20, 2));
WebTransformationMatrix layerToSurfaceTransform;
// The layer is positioned so that the right half of the layer should be in front of
// the camera, while the other half is behind the surface's projection plane. The
// following sequence of transforms applies the perspective and rotation about the
// center of the layer.
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.applyPerspective(1);
layerToSurfaceTransform.translate3d(-2, 0, 1);
layerToSurfaceTransform.rotate3d(0, 45, 0);
// Sanity check that this transform does indeed cause w < 0 when applying the
// transform, otherwise this code is not testing the intended scenario.
bool clipped = false;
CCMathUtil::mapQuad(layerToSurfaceTransform, FloatQuad(FloatRect(layerContentRect)), clipped);
ASSERT_TRUE(clipped);
int expectedXPosition = 0;
int expectedWidth = 10;
IntRect actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_EQ(expectedXPosition, actual.x());
EXPECT_EQ(expectedWidth, actual.width());
}
TEST(CCLayerTreeHostCommonTest, verifyVisibleRectForPerspectiveUnprojection)
{
// To determine visibleRect in layer space, there needs to be an un-projection from
// surface space to layer space. When the original transform was a perspective
// projection that was clipped, it returns a rect that encloses the clipped bounds.
// Un-projecting this new rect may require clipping again.
// This sequence of transforms causes one corner of the layer to protrude across the w = 0 plane, and should be clipped.
IntRect targetSurfaceRect = IntRect(IntPoint(-50, -50), IntSize(100, 100));
IntRect layerContentRect = IntRect(IntPoint(-10, -10), IntSize(20, 20));
WebTransformationMatrix layerToSurfaceTransform;
layerToSurfaceTransform.makeIdentity();
layerToSurfaceTransform.applyPerspective(1);
layerToSurfaceTransform.translate3d(0, 0, -5);
layerToSurfaceTransform.rotate3d(0, 45, 0);
layerToSurfaceTransform.rotate3d(80, 0, 0);
// Sanity check that un-projection does indeed cause w < 0, otherwise this code is not
// testing the intended scenario.
bool clipped = false;
FloatRect clippedRect = CCMathUtil::mapClippedRect(layerToSurfaceTransform, layerContentRect);
CCMathUtil::projectQuad(layerToSurfaceTransform.inverse(), FloatQuad(clippedRect), clipped);
ASSERT_TRUE(clipped);
// Only the corner of the layer is not visible on the surface because of being
// clipped. But, the net result of rounding visible region to an axis-aligned rect is
// that the entire layer should still be considered visible.
IntRect expected = IntRect(IntPoint(-10, -10), IntSize(20, 20));
IntRect actual = CCLayerTreeHostCommon::calculateVisibleRect(targetSurfaceRect, layerContentRect, layerToSurfaceTransform);
EXPECT_INT_RECT_EQ(expected, actual);
}
TEST(CCLayerTreeHostCommonTest, verifyBackFaceCullingWithoutPreserves3d)
{
// Verify the behavior of back-face culling when there are no preserve-3d layers. Note
// that 3d transforms still apply in this case, but they are "flattened" to each
// parent layer according to current W3C spec.
const WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingChildOfFrontFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingChildOfFrontFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingChildOfBackFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingChildOfBackFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(frontFacingChild);
parent->addChild(backFacingChild);
parent->addChild(frontFacingSurface);
parent->addChild(backFacingSurface);
frontFacingSurface->addChild(frontFacingChildOfFrontFacingSurface);
frontFacingSurface->addChild(backFacingChildOfFrontFacingSurface);
backFacingSurface->addChild(frontFacingChildOfBackFacingSurface);
backFacingSurface->addChild(backFacingChildOfBackFacingSurface);
// Nothing is double-sided
frontFacingChild->setDoubleSided(false);
backFacingChild->setDoubleSided(false);
frontFacingSurface->setDoubleSided(false);
backFacingSurface->setDoubleSided(false);
frontFacingChildOfFrontFacingSurface->setDoubleSided(false);
backFacingChildOfFrontFacingSurface->setDoubleSided(false);
frontFacingChildOfBackFacingSurface->setDoubleSided(false);
backFacingChildOfBackFacingSurface->setDoubleSided(false);
WebTransformationMatrix backfaceMatrix;
backfaceMatrix.translate(50, 50);
backfaceMatrix.rotate3d(0, 1, 0, 180);
backfaceMatrix.translate(-50, -50);
// Having a descendant and opacity will force these to have render surfaces.
frontFacingSurface->setOpacity(0.5);
backFacingSurface->setOpacity(0.5);
// Nothing preserves 3d. According to current W3C CSS Transforms spec, these layers
// should blindly use their own local transforms to determine back-face culling.
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(frontFacingChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(backFacingChild.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(frontFacingSurface.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(backFacingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(frontFacingChildOfFrontFacingSurface.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(backFacingChildOfFrontFacingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(frontFacingChildOfBackFacingSurface.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(backFacingChildOfBackFacingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
// Verify which renderSurfaces were created.
EXPECT_FALSE(frontFacingChild->renderSurface());
EXPECT_FALSE(backFacingChild->renderSurface());
EXPECT_TRUE(frontFacingSurface->renderSurface());
EXPECT_TRUE(backFacingSurface->renderSurface());
EXPECT_FALSE(frontFacingChildOfFrontFacingSurface->renderSurface());
EXPECT_FALSE(backFacingChildOfFrontFacingSurface->renderSurface());
EXPECT_FALSE(frontFacingChildOfBackFacingSurface->renderSurface());
EXPECT_FALSE(backFacingChildOfBackFacingSurface->renderSurface());
// Verify the renderSurfaceLayerList.
ASSERT_EQ(3u, renderSurfaceLayerList.size());
EXPECT_EQ(parent->id(), renderSurfaceLayerList[0]->id());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[1]->id());
// Even though the back facing surface LAYER gets culled, the other descendants should still be added, so the SURFACE should not be culled.
EXPECT_EQ(backFacingSurface->id(), renderSurfaceLayerList[2]->id());
// Verify root surface's layerList.
ASSERT_EQ(3u, renderSurfaceLayerList[0]->renderSurface()->layerList().size());
EXPECT_EQ(frontFacingChild->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[0]->id());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[1]->id());
EXPECT_EQ(backFacingSurface->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[2]->id());
// Verify frontFacingSurface's layerList.
ASSERT_EQ(2u, renderSurfaceLayerList[1]->renderSurface()->layerList().size());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[1]->renderSurface()->layerList()[0]->id());
EXPECT_EQ(frontFacingChildOfFrontFacingSurface->id(), renderSurfaceLayerList[1]->renderSurface()->layerList()[1]->id());
// Verify backFacingSurface's layerList; its own layer should be culled from the surface list.
ASSERT_EQ(1u, renderSurfaceLayerList[2]->renderSurface()->layerList().size());
EXPECT_EQ(frontFacingChildOfBackFacingSurface->id(), renderSurfaceLayerList[2]->renderSurface()->layerList()[0]->id());
}
TEST(CCLayerTreeHostCommonTest, verifyBackFaceCullingWithPreserves3d)
{
// Verify the behavior of back-face culling when preserves-3d transform style is used.
const WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingChildOfFrontFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingChildOfFrontFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingChildOfBackFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingChildOfBackFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> dummyReplicaLayer1 = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> dummyReplicaLayer2 = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(frontFacingChild);
parent->addChild(backFacingChild);
parent->addChild(frontFacingSurface);
parent->addChild(backFacingSurface);
frontFacingSurface->addChild(frontFacingChildOfFrontFacingSurface);
frontFacingSurface->addChild(backFacingChildOfFrontFacingSurface);
backFacingSurface->addChild(frontFacingChildOfBackFacingSurface);
backFacingSurface->addChild(backFacingChildOfBackFacingSurface);
// Nothing is double-sided
frontFacingChild->setDoubleSided(false);
backFacingChild->setDoubleSided(false);
frontFacingSurface->setDoubleSided(false);
backFacingSurface->setDoubleSided(false);
frontFacingChildOfFrontFacingSurface->setDoubleSided(false);
backFacingChildOfFrontFacingSurface->setDoubleSided(false);
frontFacingChildOfBackFacingSurface->setDoubleSided(false);
backFacingChildOfBackFacingSurface->setDoubleSided(false);
WebTransformationMatrix backfaceMatrix;
backfaceMatrix.translate(50, 50);
backfaceMatrix.rotate3d(0, 1, 0, 180);
backfaceMatrix.translate(-50, -50);
// Opacity will not force creation of renderSurfaces in this case because of the
// preserve-3d transform style. Instead, an example of when a surface would be
// created with preserve-3d is when there is a replica layer.
frontFacingSurface->setReplicaLayer(dummyReplicaLayer1.get());
backFacingSurface->setReplicaLayer(dummyReplicaLayer2.get());
// Each surface creates its own new 3d rendering context (as defined by W3C spec).
// According to current W3C CSS Transforms spec, layers in a 3d rendering context
// should use the transform with respect to that context. This 3d rendering context
// occurs when (a) parent's transform style is flat and (b) the layer's transform
// style is preserve-3d.
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false); // parent transform style is flat.
setLayerPropertiesForTesting(frontFacingChild.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(backFacingChild.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(frontFacingSurface.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), true); // surface transform style is preserve-3d.
setLayerPropertiesForTesting(backFacingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), true); // surface transform style is preserve-3d.
setLayerPropertiesForTesting(frontFacingChildOfFrontFacingSurface.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(backFacingChildOfFrontFacingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(frontFacingChildOfBackFacingSurface.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(backFacingChildOfBackFacingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
// Verify which renderSurfaces were created.
EXPECT_FALSE(frontFacingChild->renderSurface());
EXPECT_FALSE(backFacingChild->renderSurface());
EXPECT_TRUE(frontFacingSurface->renderSurface());
EXPECT_FALSE(backFacingSurface->renderSurface());
EXPECT_FALSE(frontFacingChildOfFrontFacingSurface->renderSurface());
EXPECT_FALSE(backFacingChildOfFrontFacingSurface->renderSurface());
EXPECT_FALSE(frontFacingChildOfBackFacingSurface->renderSurface());
EXPECT_FALSE(backFacingChildOfBackFacingSurface->renderSurface());
// Verify the renderSurfaceLayerList. The back-facing surface should be culled.
ASSERT_EQ(2u, renderSurfaceLayerList.size());
EXPECT_EQ(parent->id(), renderSurfaceLayerList[0]->id());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[1]->id());
// Verify root surface's layerList.
ASSERT_EQ(2u, renderSurfaceLayerList[0]->renderSurface()->layerList().size());
EXPECT_EQ(frontFacingChild->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[0]->id());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[1]->id());
// Verify frontFacingSurface's layerList.
ASSERT_EQ(2u, renderSurfaceLayerList[1]->renderSurface()->layerList().size());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[1]->renderSurface()->layerList()[0]->id());
EXPECT_EQ(frontFacingChildOfFrontFacingSurface->id(), renderSurfaceLayerList[1]->renderSurface()->layerList()[1]->id());
}
TEST(CCLayerTreeHostCommonTest, verifyBackFaceCullingWithAnimatingTransforms)
{
// Verify that layers are appropriately culled when their back face is showing and
// they are not double sided, while animations are going on.
//
// Layers that are animating do not get culled on the main thread, as their transforms should be
// treated as "unknown" so we can not be sure that their back face is really showing.
//
const WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> child = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> animatingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> childOfAnimatingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> animatingChild = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> child2 = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(child);
parent->addChild(animatingSurface);
animatingSurface->addChild(childOfAnimatingSurface);
parent->addChild(animatingChild);
parent->addChild(child2);
// Nothing is double-sided
child->setDoubleSided(false);
child2->setDoubleSided(false);
animatingSurface->setDoubleSided(false);
childOfAnimatingSurface->setDoubleSided(false);
animatingChild->setDoubleSided(false);
WebTransformationMatrix backfaceMatrix;
backfaceMatrix.translate(50, 50);
backfaceMatrix.rotate3d(0, 1, 0, 180);
backfaceMatrix.translate(-50, -50);
// Make our render surface.
animatingSurface->setForceRenderSurface(true);
// Animate the transform on the render surface.
addAnimatedTransformToController(*animatingSurface->layerAnimationController(), 10, 30, 0);
// This is just an animating layer, not a surface.
addAnimatedTransformToController(*animatingChild->layerAnimationController(), 10, 30, 0);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(child.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(animatingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(childOfAnimatingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(animatingChild.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(child2.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
EXPECT_FALSE(child->renderSurface());
EXPECT_TRUE(animatingSurface->renderSurface());
EXPECT_FALSE(childOfAnimatingSurface->renderSurface());
EXPECT_FALSE(animatingChild->renderSurface());
EXPECT_FALSE(child2->renderSurface());
// Verify that the animatingChild and childOfAnimatingSurface were not culled, but that child was.
ASSERT_EQ(2u, renderSurfaceLayerList.size());
EXPECT_EQ(parent->id(), renderSurfaceLayerList[0]->id());
EXPECT_EQ(animatingSurface->id(), renderSurfaceLayerList[1]->id());
// The non-animating child be culled from the layer list for the parent render surface.
ASSERT_EQ(3u, renderSurfaceLayerList[0]->renderSurface()->layerList().size());
EXPECT_EQ(animatingSurface->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[0]->id());
EXPECT_EQ(animatingChild->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[1]->id());
EXPECT_EQ(child2->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[2]->id());
ASSERT_EQ(2u, renderSurfaceLayerList[1]->renderSurface()->layerList().size());
EXPECT_EQ(animatingSurface->id(), renderSurfaceLayerList[1]->renderSurface()->layerList()[0]->id());
EXPECT_EQ(childOfAnimatingSurface->id(), renderSurfaceLayerList[1]->renderSurface()->layerList()[1]->id());
EXPECT_FALSE(child2->visibleContentRect().isEmpty());
// The animating layers should have a visibleContentRect that represents the area of the front face that is within the viewport.
EXPECT_EQ(animatingChild->visibleContentRect(), IntRect(IntPoint(), animatingChild->contentBounds()));
EXPECT_EQ(animatingSurface->visibleContentRect(), IntRect(IntPoint(), animatingSurface->contentBounds()));
// And layers in the subtree of the animating layer should have valid visibleContentRects also.
EXPECT_EQ(childOfAnimatingSurface->visibleContentRect(), IntRect(IntPoint(), childOfAnimatingSurface->contentBounds()));
}
TEST(CCLayerTreeHostCommonTest, verifyBackFaceCullingWithPreserves3dForFlatteningSurface)
{
// Verify the behavior of back-face culling for a renderSurface that is created
// when it flattens its subtree, and its parent has preserves-3d.
const WebTransformationMatrix identityMatrix;
RefPtr<LayerChromium> parent = LayerChromium::create();
RefPtr<LayerChromiumWithForcedDrawsContent> frontFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> backFacingSurface = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> child1 = adoptRef(new LayerChromiumWithForcedDrawsContent());
RefPtr<LayerChromiumWithForcedDrawsContent> child2 = adoptRef(new LayerChromiumWithForcedDrawsContent());
parent->addChild(frontFacingSurface);
parent->addChild(backFacingSurface);
frontFacingSurface->addChild(child1);
backFacingSurface->addChild(child2);
// RenderSurfaces are not double-sided
frontFacingSurface->setDoubleSided(false);
backFacingSurface->setDoubleSided(false);
WebTransformationMatrix backfaceMatrix;
backfaceMatrix.translate(50, 50);
backfaceMatrix.rotate3d(0, 1, 0, 180);
backfaceMatrix.translate(-50, -50);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), true); // parent transform style is preserve3d.
setLayerPropertiesForTesting(frontFacingSurface.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false); // surface transform style is flat.
setLayerPropertiesForTesting(backFacingSurface.get(), backfaceMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false); // surface transform style is flat.
setLayerPropertiesForTesting(child1.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
setLayerPropertiesForTesting(child2.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), false);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), 1, dummyMaxTextureSize, renderSurfaceLayerList);
// Verify which renderSurfaces were created.
EXPECT_TRUE(frontFacingSurface->renderSurface());
EXPECT_FALSE(backFacingSurface->renderSurface()); // because it should be culled
EXPECT_FALSE(child1->renderSurface());
EXPECT_FALSE(child2->renderSurface());
// Verify the renderSurfaceLayerList. The back-facing surface should be culled.
ASSERT_EQ(2u, renderSurfaceLayerList.size());
EXPECT_EQ(parent->id(), renderSurfaceLayerList[0]->id());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[1]->id());
// Verify root surface's layerList.
ASSERT_EQ(1u, renderSurfaceLayerList[0]->renderSurface()->layerList().size());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[0]->renderSurface()->layerList()[0]->id());
// Verify frontFacingSurface's layerList.
ASSERT_EQ(2u, renderSurfaceLayerList[1]->renderSurface()->layerList().size());
EXPECT_EQ(frontFacingSurface->id(), renderSurfaceLayerList[1]->renderSurface()->layerList()[0]->id());
EXPECT_EQ(child1->id(), renderSurfaceLayerList[1]->renderSurface()->layerList()[1]->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForEmptyLayerList)
{
// Hit testing on an empty renderSurfaceLayerList should return a null pointer.
DebugScopedSetImplThread thisScopeIsOnImplThread;
Vector<CCLayerImpl*> renderSurfaceLayerList;
IntPoint testPoint(0, 0);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(10, 20);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForSingleLayer)
{
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(12345);
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
FloatPoint position(0, 0);
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
root->setDrawsContent(true);
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, root->renderSurface()->layerList().size());
// Hit testing for a point outside the layer should return a null pointer.
IntPoint testPoint(101, 101);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(-1, -1);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Hit testing for a point inside should return the root layer.
testPoint = IntPoint(1, 1);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
testPoint = IntPoint(99, 99);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForUninvertibleTransform)
{
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(12345);
WebTransformationMatrix uninvertibleTransform;
uninvertibleTransform.setM11(0);
uninvertibleTransform.setM22(0);
uninvertibleTransform.setM33(0);
uninvertibleTransform.setM44(0);
ASSERT_FALSE(uninvertibleTransform.isInvertible());
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
FloatPoint position(0, 0);
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), uninvertibleTransform, identityMatrix, anchor, position, bounds, false);
root->setDrawsContent(true);
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, root->renderSurface()->layerList().size());
ASSERT_FALSE(root->screenSpaceTransform().isInvertible());
// Hit testing any point should not hit the layer. If the invertible matrix is
// accidentally ignored and treated like an identity, then the hit testing will
// incorrectly hit the layer when it shouldn't.
IntPoint testPoint(1, 1);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(10, 10);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(10, 30);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(50, 50);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(67, 48);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(99, 99);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(-1, -1);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForSinglePositionedLayer)
{
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(12345);
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
FloatPoint position(50, 50); // this layer is positioned, and hit testing should correctly know where the layer is located.
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
root->setDrawsContent(true);
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, root->renderSurface()->layerList().size());
// Hit testing for a point outside the layer should return a null pointer.
IntPoint testPoint(49, 49);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Even though the layer exists at (101, 101), it should not be visible there since the root renderSurface would clamp it.
testPoint = IntPoint(101, 101);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Hit testing for a point inside should return the root layer.
testPoint = IntPoint(51, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
testPoint = IntPoint(99, 99);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForSingleRotatedLayer)
{
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(12345);
WebTransformationMatrix identityMatrix;
WebTransformationMatrix rotation45DegreesAboutCenter;
rotation45DegreesAboutCenter.translate(50, 50);
rotation45DegreesAboutCenter.rotate3d(0, 0, 45);
rotation45DegreesAboutCenter.translate(-50, -50);
FloatPoint anchor(0, 0);
FloatPoint position(0, 0);
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), rotation45DegreesAboutCenter, identityMatrix, anchor, position, bounds, false);
root->setDrawsContent(true);
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, root->renderSurface()->layerList().size());
// Hit testing for points outside the layer.
// These corners would have been inside the un-transformed layer, but they should not hit the correctly transformed layer.
IntPoint testPoint(99, 99);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(1, 1);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Hit testing for a point inside should return the root layer.
testPoint = IntPoint(1, 50);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
// Hit testing the corners that would overlap the unclipped layer, but are outside the clipped region.
testPoint = IntPoint(50, -1);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_FALSE(resultLayer);
testPoint = IntPoint(-1, 50);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_FALSE(resultLayer);
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForSinglePerspectiveLayer)
{
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(12345);
WebTransformationMatrix identityMatrix;
// perspectiveProjectionAboutCenter * translationByZ is designed so that the 100 x 100 layer becomes 50 x 50, and remains centered at (50, 50).
WebTransformationMatrix perspectiveProjectionAboutCenter;
perspectiveProjectionAboutCenter.translate(50, 50);
perspectiveProjectionAboutCenter.applyPerspective(1);
perspectiveProjectionAboutCenter.translate(-50, -50);
WebTransformationMatrix translationByZ;
translationByZ.translate3d(0, 0, -1);
FloatPoint anchor(0, 0);
FloatPoint position(0, 0);
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), perspectiveProjectionAboutCenter * translationByZ, identityMatrix, anchor, position, bounds, false);
root->setDrawsContent(true);
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, root->renderSurface()->layerList().size());
// Hit testing for points outside the layer.
// These corners would have been inside the un-transformed layer, but they should not hit the correctly transformed layer.
IntPoint testPoint(24, 24);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(76, 76);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Hit testing for a point inside should return the root layer.
testPoint = IntPoint(26, 26);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
testPoint = IntPoint(74, 74);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForSingleLayerWithScaledContents)
{
// A layer's visibleContentRect is actually in the layer's content space. The
// screenSpaceTransform converts from the layer's origin space to screen space. This
// test makes sure that hit testing works correctly accounts for the contents scale.
// A contentsScale that is not 1 effectively forces a non-identity transform between
// layer's content space and layer's origin space. The hit testing code must take this into account.
//
// To test this, the layer is positioned at (25, 25), and is size (50, 50). If
// contentsScale is ignored, then hit testing will mis-interpret the visibleContentRect
// as being larger than the actual bounds of the layer.
//
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(1);
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, anchor, FloatPoint(0, 0), IntSize(100, 100), false);
{
FloatPoint position(25, 25);
IntSize bounds(50, 50);
OwnPtr<CCLayerImpl> testLayer = CCLayerImpl::create(12345);
setLayerPropertiesForTesting(testLayer.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
// override contentBounds
testLayer->setContentBounds(IntSize(100, 100));
testLayer->setDrawsContent(true);
root->addChild(testLayer.release());
}
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
// The visibleContentRect for testLayer is actually 100x100, even though its layout size is 50x50, positioned at 25x25.
CCLayerImpl* testLayer = root->children()[0].get();
EXPECT_INT_RECT_EQ(IntRect(IntPoint::zero(), IntSize(100, 100)), testLayer->visibleContentRect());
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, root->renderSurface()->layerList().size());
// Hit testing for a point outside the layer should return a null pointer (the root layer does not draw content, so it will not be hit tested either).
IntPoint testPoint(101, 101);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(24, 24);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(76, 76);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Hit testing for a point inside should return the test layer.
testPoint = IntPoint(26, 26);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
testPoint = IntPoint(74, 74);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(12345, resultLayer->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForSimpleClippedLayer)
{
// Test that hit-testing will only work for the visible portion of a layer, and not
// the entire layer bounds. Here we just test the simple axis-aligned case.
DebugScopedSetImplThread thisScopeIsOnImplThread;
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(1);
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, anchor, FloatPoint(0, 0), IntSize(100, 100), false);
{
OwnPtr<CCLayerImpl> clippingLayer = CCLayerImpl::create(123);
FloatPoint position(25, 25); // this layer is positioned, and hit testing should correctly know where the layer is located.
IntSize bounds(50, 50);
setLayerPropertiesForTesting(clippingLayer.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
clippingLayer->setMasksToBounds(true);
OwnPtr<CCLayerImpl> child = CCLayerImpl::create(456);
position = FloatPoint(-50, -50);
bounds = IntSize(300, 300);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
child->setDrawsContent(true);
clippingLayer->addChild(child.release());
root->addChild(clippingLayer.release());
}
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, root->renderSurface()->layerList().size());
ASSERT_EQ(456, root->renderSurface()->layerList()[0]->id());
// Hit testing for a point outside the layer should return a null pointer.
// Despite the child layer being very large, it should be clipped to the root layer's bounds.
IntPoint testPoint(24, 24);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Even though the layer exists at (101, 101), it should not be visible there since the clippingLayer would clamp it.
testPoint = IntPoint(76, 76);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Hit testing for a point inside should return the child layer.
testPoint = IntPoint(26, 26);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(456, resultLayer->id());
testPoint = IntPoint(74, 74);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(456, resultLayer->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForMultiClippedRotatedLayer)
{
// This test checks whether hit testing correctly avoids hit testing with multiple
// ancestors that clip in non axis-aligned ways. To pass this test, the hit testing
// algorithm needs to recognize that multiple parent layers may clip the layer, and
// should not actually hit those clipped areas.
//
// The child and grandChild layers are both initialized to clip the rotatedLeaf. The
// child layer is rotated about the top-left corner, so that the root + child clips
// combined create a triangle. The rotatedLeaf will only be visible where it overlaps
// this triangle.
//
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(123);
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
FloatPoint position(0, 0);
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
root->setMasksToBounds(true);
{
OwnPtr<CCLayerImpl> child = CCLayerImpl::create(456);
OwnPtr<CCLayerImpl> grandChild = CCLayerImpl::create(789);
OwnPtr<CCLayerImpl> rotatedLeaf = CCLayerImpl::create(2468);
position = FloatPoint(10, 10);
bounds = IntSize(80, 80);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
child->setMasksToBounds(true);
WebTransformationMatrix rotation45DegreesAboutCorner;
rotation45DegreesAboutCorner.rotate3d(0, 0, 45);
position = FloatPoint(0, 0); // remember, positioned with respect to its parent which is already at 10, 10
bounds = IntSize(200, 200); // to ensure it covers at least sqrt(2) * 100.
setLayerPropertiesForTesting(grandChild.get(), rotation45DegreesAboutCorner, identityMatrix, anchor, position, bounds, false);
grandChild->setMasksToBounds(true);
// Rotates about the center of the layer
WebTransformationMatrix rotatedLeafTransform;
rotatedLeafTransform.translate(-10, -10); // cancel out the grandParent's position
rotatedLeafTransform.rotate3d(0, 0, -45); // cancel out the corner 45-degree rotation of the parent.
rotatedLeafTransform.translate(50, 50);
rotatedLeafTransform.rotate3d(0, 0, 45);
rotatedLeafTransform.translate(-50, -50);
position = FloatPoint(0, 0);
bounds = IntSize(100, 100);
setLayerPropertiesForTesting(rotatedLeaf.get(), rotatedLeafTransform, identityMatrix, anchor, position, bounds, false);
rotatedLeaf->setDrawsContent(true);
grandChild->addChild(rotatedLeaf.release());
child->addChild(grandChild.release());
root->addChild(child.release());
}
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
// The grandChild is expected to create a renderSurface because it masksToBounds and is not axis aligned.
ASSERT_EQ(2u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, renderSurfaceLayerList[0]->renderSurface()->layerList().size());
ASSERT_EQ(789, renderSurfaceLayerList[0]->renderSurface()->layerList()[0]->id()); // grandChild's surface.
ASSERT_EQ(1u, renderSurfaceLayerList[1]->renderSurface()->layerList().size());
ASSERT_EQ(2468, renderSurfaceLayerList[1]->renderSurface()->layerList()[0]->id());
// (11, 89) is close to the the bottom left corner within the clip, but it is not inside the layer.
IntPoint testPoint(11, 89);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Closer inwards from the bottom left will overlap the layer.
testPoint = IntPoint(25, 75);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(2468, resultLayer->id());
// (4, 50) is inside the unclipped layer, but that corner of the layer should be
// clipped away by the grandParent and should not get hit. If hit testing blindly uses
// visibleContentRect without considering how parent may clip the layer, then hit
// testing would accidentally think that the point successfully hits the layer.
testPoint = IntPoint(4, 50);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// (11, 50) is inside the layer and within the clipped area.
testPoint = IntPoint(11, 50);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(2468, resultLayer->id());
// Around the middle, just to the right and up, would have hit the layer except that
// that area should be clipped away by the parent.
testPoint = IntPoint(51, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Around the middle, just to the left and down, should successfully hit the layer.
testPoint = IntPoint(49, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(2468, resultLayer->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForNonClippingIntermediateLayer)
{
// This test checks that hit testing code does not accidentally clip to layer
// bounds for a layer that actually does not clip.
DebugScopedSetImplThread thisScopeIsOnImplThread;
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(1);
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, anchor, FloatPoint(0, 0), IntSize(100, 100), false);
{
OwnPtr<CCLayerImpl> intermediateLayer = CCLayerImpl::create(123);
FloatPoint position(10, 10); // this layer is positioned, and hit testing should correctly know where the layer is located.
IntSize bounds(50, 50);
setLayerPropertiesForTesting(intermediateLayer.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
// Sanity check the intermediate layer should not clip.
ASSERT_FALSE(intermediateLayer->masksToBounds());
ASSERT_FALSE(intermediateLayer->maskLayer());
// The child of the intermediateLayer is translated so that it does not overlap intermediateLayer at all.
// If child is incorrectly clipped, we would not be able to hit it successfully.
OwnPtr<CCLayerImpl> child = CCLayerImpl::create(456);
position = FloatPoint(60, 60); // 70, 70 in screen space
bounds = IntSize(20, 20);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
child->setDrawsContent(true);
intermediateLayer->addChild(child.release());
root->addChild(intermediateLayer.release());
}
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(1u, root->renderSurface()->layerList().size());
ASSERT_EQ(456, root->renderSurface()->layerList()[0]->id());
// Hit testing for a point outside the layer should return a null pointer.
IntPoint testPoint(69, 69);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
testPoint = IntPoint(91, 91);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
EXPECT_FALSE(resultLayer);
// Hit testing for a point inside should return the child layer.
testPoint = IntPoint(71, 71);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(456, resultLayer->id());
testPoint = IntPoint(89, 89);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(456, resultLayer->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForMultipleLayers)
{
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(1);
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
FloatPoint position(0, 0);
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
root->setDrawsContent(true);
{
// child 1 and child2 are initialized to overlap between x=50 and x=60.
// grandChild is set to overlap both child1 and child2 between y=50 and y=60.
// The expected stacking order is:
// (front) child2, (second) grandChild, (third) child1, and (back) the root layer behind all other layers.
OwnPtr<CCLayerImpl> child1 = CCLayerImpl::create(2);
OwnPtr<CCLayerImpl> child2 = CCLayerImpl::create(3);
OwnPtr<CCLayerImpl> grandChild1 = CCLayerImpl::create(4);
position = FloatPoint(10, 10);
bounds = IntSize(50, 50);
setLayerPropertiesForTesting(child1.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
child1->setDrawsContent(true);
position = FloatPoint(50, 10);
bounds = IntSize(50, 50);
setLayerPropertiesForTesting(child2.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
child2->setDrawsContent(true);
// Remember that grandChild is positioned with respect to its parent (i.e. child1).
// In screen space, the intended position is (10, 50), with size 100 x 50.
position = FloatPoint(0, 40);
bounds = IntSize(100, 50);
setLayerPropertiesForTesting(grandChild1.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
grandChild1->setDrawsContent(true);
child1->addChild(grandChild1.release());
root->addChild(child1.release());
root->addChild(child2.release());
}
CCLayerImpl* child1 = root->children()[0].get();
CCLayerImpl* child2 = root->children()[1].get();
CCLayerImpl* grandChild1 = child1->children()[0].get();
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_TRUE(child1);
ASSERT_TRUE(child2);
ASSERT_TRUE(grandChild1);
ASSERT_EQ(1u, renderSurfaceLayerList.size());
ASSERT_EQ(4u, root->renderSurface()->layerList().size());
ASSERT_EQ(1, root->renderSurface()->layerList()[0]->id()); // root layer
ASSERT_EQ(2, root->renderSurface()->layerList()[1]->id()); // child1
ASSERT_EQ(4, root->renderSurface()->layerList()[2]->id()); // grandChild1
ASSERT_EQ(3, root->renderSurface()->layerList()[3]->id()); // child2
// Nothing overlaps the rootLayer at (1, 1), so hit testing there should find the root layer.
IntPoint testPoint = IntPoint(1, 1);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(1, resultLayer->id());
// At (15, 15), child1 and root are the only layers. child1 is expected to be on top.
testPoint = IntPoint(15, 15);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(2, resultLayer->id());
// At (51, 20), child1 and child2 overlap. child2 is expected to be on top.
testPoint = IntPoint(51, 20);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(3, resultLayer->id());
// At (80, 51), child2 and grandChild1 overlap. child2 is expected to be on top.
testPoint = IntPoint(80, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(3, resultLayer->id());
// At (51, 51), all layers overlap each other. child2 is expected to be on top of all other layers.
testPoint = IntPoint(51, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(3, resultLayer->id());
// At (20, 51), child1 and grandChild1 overlap. grandChild1 is expected to be on top.
testPoint = IntPoint(20, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(4, resultLayer->id());
}
TEST(CCLayerTreeHostCommonTest, verifyHitTestingForMultipleLayerLists)
{
//
// The geometry is set up similarly to the previous case, but
// all layers are forced to be renderSurfaces now.
//
DebugScopedSetImplThread thisScopeIsOnImplThread;
OwnPtr<CCLayerImpl> root = CCLayerImpl::create(1);
WebTransformationMatrix identityMatrix;
FloatPoint anchor(0, 0);
FloatPoint position(0, 0);
IntSize bounds(100, 100);
setLayerPropertiesForTesting(root.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
root->setDrawsContent(true);
{
// child 1 and child2 are initialized to overlap between x=50 and x=60.
// grandChild is set to overlap both child1 and child2 between y=50 and y=60.
// The expected stacking order is:
// (front) child2, (second) grandChild, (third) child1, and (back) the root layer behind all other layers.
OwnPtr<CCLayerImpl> child1 = CCLayerImpl::create(2);
OwnPtr<CCLayerImpl> child2 = CCLayerImpl::create(3);
OwnPtr<CCLayerImpl> grandChild1 = CCLayerImpl::create(4);
position = FloatPoint(10, 10);
bounds = IntSize(50, 50);
setLayerPropertiesForTesting(child1.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
child1->setDrawsContent(true);
child1->setForceRenderSurface(true);
position = FloatPoint(50, 10);
bounds = IntSize(50, 50);
setLayerPropertiesForTesting(child2.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
child2->setDrawsContent(true);
child2->setForceRenderSurface(true);
// Remember that grandChild is positioned with respect to its parent (i.e. child1).
// In screen space, the intended position is (10, 50), with size 100 x 50.
position = FloatPoint(0, 40);
bounds = IntSize(100, 50);
setLayerPropertiesForTesting(grandChild1.get(), identityMatrix, identityMatrix, anchor, position, bounds, false);
grandChild1->setDrawsContent(true);
grandChild1->setForceRenderSurface(true);
child1->addChild(grandChild1.release());
root->addChild(child1.release());
root->addChild(child2.release());
}
CCLayerImpl* child1 = root->children()[0].get();
CCLayerImpl* child2 = root->children()[1].get();
CCLayerImpl* grandChild1 = child1->children()[0].get();
Vector<CCLayerImpl*> renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
CCLayerTreeHostCommon::calculateDrawTransforms(root.get(), root->bounds(), 1, 0, dummyMaxTextureSize, renderSurfaceLayerList);
CCLayerTreeHostCommon::calculateVisibleRects(renderSurfaceLayerList);
// Sanity check the scenario we just created.
ASSERT_TRUE(child1);
ASSERT_TRUE(child2);
ASSERT_TRUE(grandChild1);
ASSERT_TRUE(child1->renderSurface());
ASSERT_TRUE(child2->renderSurface());
ASSERT_TRUE(grandChild1->renderSurface());
ASSERT_EQ(4u, renderSurfaceLayerList.size());
ASSERT_EQ(3u, root->renderSurface()->layerList().size()); // The root surface has the root layer, and child1's and child2's renderSurfaces.
ASSERT_EQ(2u, child1->renderSurface()->layerList().size()); // The child1 surface has the child1 layer and grandChild1's renderSurface.
ASSERT_EQ(1u, child2->renderSurface()->layerList().size());
ASSERT_EQ(1u, grandChild1->renderSurface()->layerList().size());
ASSERT_EQ(1, renderSurfaceLayerList[0]->id()); // root layer
ASSERT_EQ(2, renderSurfaceLayerList[1]->id()); // child1
ASSERT_EQ(4, renderSurfaceLayerList[2]->id()); // grandChild1
ASSERT_EQ(3, renderSurfaceLayerList[3]->id()); // child2
// Nothing overlaps the rootLayer at (1, 1), so hit testing there should find the root layer.
IntPoint testPoint = IntPoint(1, 1);
CCLayerImpl* resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(1, resultLayer->id());
// At (15, 15), child1 and root are the only layers. child1 is expected to be on top.
testPoint = IntPoint(15, 15);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(2, resultLayer->id());
// At (51, 20), child1 and child2 overlap. child2 is expected to be on top.
testPoint = IntPoint(51, 20);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(3, resultLayer->id());
// At (80, 51), child2 and grandChild1 overlap. child2 is expected to be on top.
testPoint = IntPoint(80, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(3, resultLayer->id());
// At (51, 51), all layers overlap each other. child2 is expected to be on top of all other layers.
testPoint = IntPoint(51, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(3, resultLayer->id());
// At (20, 51), child1 and grandChild1 overlap. grandChild1 is expected to be on top.
testPoint = IntPoint(20, 51);
resultLayer = CCLayerTreeHostCommon::findLayerThatIsHitByPoint(testPoint, renderSurfaceLayerList);
ASSERT_TRUE(resultLayer);
EXPECT_EQ(4, resultLayer->id());
}
class MockContentLayerDelegate : public ContentLayerDelegate {
public:
MockContentLayerDelegate() { }
virtual ~MockContentLayerDelegate() { }
virtual void paintContents(SkCanvas*, const IntRect& clip, FloatRect& opaque) OVERRIDE { }
};
PassRefPtr<ContentLayerChromium> createDrawableContentLayerChromium(ContentLayerDelegate* delegate)
{
RefPtr<ContentLayerChromium> toReturn = ContentLayerChromium::create(delegate);
toReturn->setIsDrawable(true);
return toReturn.release();
}
TEST(CCLayerTreeHostCommonTest, verifyLayerTransformsInHighDPI)
{
// Verify draw and screen space transforms of layers not in a surface.
MockContentLayerDelegate delegate;
WebTransformationMatrix identityMatrix;
RefPtr<ContentLayerChromium> parent = createDrawableContentLayerChromium(&delegate);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(100, 100), true);
RefPtr<ContentLayerChromium> child = createDrawableContentLayerChromium(&delegate);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(2, 2), IntSize(10, 10), true);
RefPtr<ContentLayerChromium> childNoScale = createDrawableContentLayerChromium(&delegate);
setLayerPropertiesForTesting(childNoScale.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(2, 2), IntSize(10, 10), true);
parent->addChild(child);
parent->addChild(childNoScale);
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
const double deviceScaleFactor = 2.5;
parent->setContentsScale(deviceScaleFactor);
child->setContentsScale(deviceScaleFactor);
EXPECT_EQ(childNoScale->contentsScale(), 1);
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), deviceScaleFactor, dummyMaxTextureSize, renderSurfaceLayerList);
EXPECT_EQ(1u, renderSurfaceLayerList.size());
// Verify parent transforms
WebTransformationMatrix expectedParentTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedParentTransform, parent->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedParentTransform, parent->drawTransform());
// Verify results of transformed parent rects
FloatRect parentContentBounds(FloatPoint(), FloatSize(parent->contentBounds()));
FloatRect parentDrawRect = CCMathUtil::mapClippedRect(parent->drawTransform(), parentContentBounds);
FloatRect parentScreenSpaceRect = CCMathUtil::mapClippedRect(parent->screenSpaceTransform(), parentContentBounds);
FloatRect expectedParentDrawRect(FloatPoint(), parent->bounds());
expectedParentDrawRect.scale(deviceScaleFactor);
EXPECT_FLOAT_RECT_EQ(expectedParentDrawRect, parentDrawRect);
EXPECT_FLOAT_RECT_EQ(expectedParentDrawRect, parentScreenSpaceRect);
// Verify child transforms
WebTransformationMatrix expectedChildTransform;
expectedChildTransform.translate(deviceScaleFactor * child->position().x(), deviceScaleFactor * child->position().y());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildTransform, child->screenSpaceTransform());
// Verify results of transformed child rects
FloatRect childContentBounds(FloatPoint(), FloatSize(child->contentBounds()));
FloatRect childDrawRect = CCMathUtil::mapClippedRect(child->drawTransform(), childContentBounds);
FloatRect childScreenSpaceRect = CCMathUtil::mapClippedRect(child->screenSpaceTransform(), childContentBounds);
FloatRect expectedChildDrawRect(FloatPoint(), child->bounds());
expectedChildDrawRect.move(child->position().x(), child->position().y());
expectedChildDrawRect.scale(deviceScaleFactor);
EXPECT_FLOAT_RECT_EQ(expectedChildDrawRect, childDrawRect);
EXPECT_FLOAT_RECT_EQ(expectedChildDrawRect, childScreenSpaceRect);
// Verify childNoScale transforms
WebTransformationMatrix expectedChildNoScaleTransform = child->drawTransform();
// All transforms operate on content rects. The child's content rect
// incorporates device scale, but the childNoScale does not; add it here.
expectedChildNoScaleTransform.scale(deviceScaleFactor);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildNoScaleTransform, childNoScale->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedChildNoScaleTransform, childNoScale->screenSpaceTransform());
}
TEST(CCLayerTreeHostCommonTest, verifyRenderSurfaceTransformsInHighDPI)
{
MockContentLayerDelegate delegate;
WebTransformationMatrix identityMatrix;
RefPtr<ContentLayerChromium> parent = createDrawableContentLayerChromium(&delegate);
setLayerPropertiesForTesting(parent.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(30, 30), true);
RefPtr<ContentLayerChromium> child = createDrawableContentLayerChromium(&delegate);
setLayerPropertiesForTesting(child.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(2, 2), IntSize(10, 10), true);
WebTransformationMatrix replicaTransform;
replicaTransform.scaleNonUniform(1, -1);
RefPtr<ContentLayerChromium> replica = createDrawableContentLayerChromium(&delegate);
setLayerPropertiesForTesting(replica.get(), replicaTransform, identityMatrix, FloatPoint(0, 0), FloatPoint(2, 2), IntSize(10, 10), true);
// This layer should end up in the same surface as child, with the same draw
// and screen space transforms.
RefPtr<ContentLayerChromium> duplicateChildNonOwner = createDrawableContentLayerChromium(&delegate);
setLayerPropertiesForTesting(duplicateChildNonOwner.get(), identityMatrix, identityMatrix, FloatPoint(0, 0), FloatPoint(0, 0), IntSize(10, 10), true);
parent->addChild(child);
child->addChild(duplicateChildNonOwner);
child->setReplicaLayer(replica.get());
Vector<RefPtr<LayerChromium> > renderSurfaceLayerList;
int dummyMaxTextureSize = 512;
const double deviceScaleFactor = 1.5;
parent->setContentsScale(deviceScaleFactor);
child->setContentsScale(deviceScaleFactor);
duplicateChildNonOwner->setContentsScale(deviceScaleFactor);
replica->setContentsScale(deviceScaleFactor);
CCLayerTreeHostCommon::calculateDrawTransforms(parent.get(), parent->bounds(), deviceScaleFactor, dummyMaxTextureSize, renderSurfaceLayerList);
// We should have two render surfaces. The root's render surface and child's
// render surface (it needs one because it has a replica layer).
EXPECT_EQ(2u, renderSurfaceLayerList.size());
WebTransformationMatrix expectedParentTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedParentTransform, parent->screenSpaceTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedParentTransform, parent->drawTransform());
WebTransformationMatrix expectedDrawTransform;
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedDrawTransform, child->drawTransform());
WebTransformationMatrix expectedScreenSpaceTransform;
expectedScreenSpaceTransform.translate(deviceScaleFactor * child->position().x(), deviceScaleFactor * child->position().y());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedScreenSpaceTransform, child->screenSpaceTransform());
WebTransformationMatrix expectedDuplicateChildDrawTransform = child->drawTransform();
EXPECT_TRANSFORMATION_MATRIX_EQ(child->drawTransform(), duplicateChildNonOwner->drawTransform());
EXPECT_TRANSFORMATION_MATRIX_EQ(child->screenSpaceTransform(), duplicateChildNonOwner->screenSpaceTransform());
EXPECT_INT_RECT_EQ(child->drawableContentRect(), duplicateChildNonOwner->drawableContentRect());
EXPECT_EQ(child->contentBounds(), duplicateChildNonOwner->contentBounds());
WebTransformationMatrix expectedRenderSurfaceDrawTransform;
expectedRenderSurfaceDrawTransform.translate(deviceScaleFactor * child->position().x(), deviceScaleFactor * child->position().y());
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedRenderSurfaceDrawTransform, child->renderSurface()->drawTransform());
WebTransformationMatrix expectedSurfaceDrawTransform;
expectedSurfaceDrawTransform.translate(deviceScaleFactor * 2, deviceScaleFactor * 2);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedSurfaceDrawTransform, child->renderSurface()->drawTransform());
WebTransformationMatrix expectedSurfaceScreenSpaceTransform;
expectedSurfaceScreenSpaceTransform.translate(deviceScaleFactor * 2, deviceScaleFactor * 2);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedSurfaceScreenSpaceTransform, child->renderSurface()->screenSpaceTransform());
WebTransformationMatrix expectedReplicaDrawTransform;
expectedReplicaDrawTransform.setM22(-1);
expectedReplicaDrawTransform.setM41(6);
expectedReplicaDrawTransform.setM42(6);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedReplicaDrawTransform, child->renderSurface()->replicaDrawTransform());
WebTransformationMatrix expectedReplicaScreenSpaceTransform;
expectedReplicaScreenSpaceTransform.setM22(-1);
expectedReplicaScreenSpaceTransform.setM41(6);
expectedReplicaScreenSpaceTransform.setM42(6);
EXPECT_TRANSFORMATION_MATRIX_EQ(expectedReplicaScreenSpaceTransform, child->renderSurface()->replicaScreenSpaceTransform());
}
TEST(CCLayerTreeHostCommonTest, verifySubtreeSearch)
{
RefPtr<LayerChromium> root = LayerChromium::create();
RefPtr<LayerChromium> child = LayerChromium::create();
RefPtr<LayerChromium> grandChild = LayerChromium::create();
RefPtr<LayerChromium> maskLayer = LayerChromium::create();
RefPtr<LayerChromium> replicaLayer = LayerChromium::create();
grandChild->setReplicaLayer(replicaLayer.get());
child->addChild(grandChild.get());
child->setMaskLayer(maskLayer.get());
root->addChild(child.get());
int nonexistentId = -1;
EXPECT_EQ(root, CCLayerTreeHostCommon::findLayerInSubtree(root.get(), root->id()));
EXPECT_EQ(child, CCLayerTreeHostCommon::findLayerInSubtree(root.get(), child->id()));
EXPECT_EQ(grandChild, CCLayerTreeHostCommon::findLayerInSubtree(root.get(), grandChild->id()));
EXPECT_EQ(maskLayer, CCLayerTreeHostCommon::findLayerInSubtree(root.get(), maskLayer->id()));
EXPECT_EQ(replicaLayer, CCLayerTreeHostCommon::findLayerInSubtree(root.get(), replicaLayer->id()));
EXPECT_EQ(0, CCLayerTreeHostCommon::findLayerInSubtree(root.get(), nonexistentId));
}
} // namespace