CCRenderSurfaceTest.cpp   [plain text]

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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#include "config.h"

#include "cc/CCRenderSurface.h"

#include "TransformationMatrix.h"
#include "cc/CCLayerImpl.h"
#include "cc/CCSharedQuadState.h"
#include "cc/CCSingleThreadProxy.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>

using namespace WebCore;

namespace {

#define EXECUTE_AND_VERIFY_SURFACE_CHANGED(codeToTest)                  \
    renderSurface->resetPropertyChangedFlag();                          \
    codeToTest;                                                         \
    EXPECT_TRUE(renderSurface->surfacePropertyChanged())

#define EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(codeToTest)           \
    renderSurface->resetPropertyChangedFlag();                          \
    codeToTest;                                                         \
    EXPECT_FALSE(renderSurface->surfacePropertyChanged())

TEST(CCRenderSurfaceTest, verifySurfaceChangesAreTrackedProperly)
{
    //
    // This test checks that surfacePropertyChanged() has the correct behavior.
    //

    // This will fake that we are on the correct thread for testing purposes.
    DebugScopedSetImplThread setImplThread;

    OwnPtr<CCLayerImpl> owningLayer = CCLayerImpl::create(0);
    owningLayer->createRenderSurface();
    ASSERT_TRUE(owningLayer->renderSurface());
    CCRenderSurface* renderSurface = owningLayer->renderSurface();
    IntRect testRect = IntRect(IntPoint(3, 4), IntSize(5, 6));
    owningLayer->resetAllChangeTrackingForSubtree();

    // Currently, the contentRect, clipRect, and owningLayer->layerPropertyChanged() are
    // the only sources of change.
    EXECUTE_AND_VERIFY_SURFACE_CHANGED(renderSurface->setClipRect(testRect));
    EXECUTE_AND_VERIFY_SURFACE_CHANGED(renderSurface->setContentRect(testRect));

    owningLayer->setOpacity(0.5f);
    EXPECT_TRUE(renderSurface->surfacePropertyChanged());
    owningLayer->resetAllChangeTrackingForSubtree();

    // Setting the surface properties to the same values again should not be considered "change".
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setClipRect(testRect));
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setContentRect(testRect));

    OwnPtr<CCLayerImpl> dummyMask = CCLayerImpl::create(1);
    TransformationMatrix dummyMatrix;
    dummyMatrix.translate(1.0, 2.0);

    // The rest of the surface properties are either internal and should not cause change,
    // or they are already accounted for by the owninglayer->layerPropertyChanged().
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setDrawOpacity(0.5));
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setDrawTransform(dummyMatrix));
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setReplicaDrawTransform(dummyMatrix));
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setOriginTransform(dummyMatrix));
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setSkipsDraw(true));
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->clearLayerList());
    EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setMaskLayer(dummyMask.get()));
}

TEST(CCRenderSurfaceTest, sanityCheckSurfaceCreatesCorrectSharedQuadState)
{
    // This will fake that we are on the correct thread for testing purposes.
    DebugScopedSetImplThread setImplThread;

    OwnPtr<CCLayerImpl> owningLayer = CCLayerImpl::create(0);
    owningLayer->createRenderSurface();
    ASSERT_TRUE(owningLayer->renderSurface());
    CCRenderSurface* renderSurface = owningLayer->renderSurface();

    IntRect contentRect = IntRect(IntPoint::zero(), IntSize(50, 50));
    IntRect clipRect = IntRect(IntPoint(5, 5), IntSize(40, 40));
    TransformationMatrix draw;
    TransformationMatrix origin;

    draw.translate(30, 40);

    renderSurface->setDrawTransform(draw);
    renderSurface->setOriginTransform(origin);
    renderSurface->setContentRect(contentRect);
    renderSurface->setClipRect(clipRect);
    renderSurface->setDrawOpacity(1);

    OwnPtr<CCSharedQuadState> sharedQuadState = renderSurface->createSharedQuadState();

    EXPECT_TRUE(sharedQuadState->quadTransform().isIdentity());
    EXPECT_EQ(30, sharedQuadState->layerTransform().m41());
    EXPECT_EQ(40, sharedQuadState->layerTransform().m42());
    EXPECT_EQ(contentRect, sharedQuadState->layerRect());
    EXPECT_EQ(clipRect, sharedQuadState->clipRect());
    EXPECT_EQ(1, sharedQuadState->opacity());
    EXPECT_FALSE(sharedQuadState->isOpaque());
}

} // namespace