Add m-esr52 at 52.6.0

17 files changed, 1010 insertions, 0 deletions

diff --git a/gfx/2d/unittest/Main.cpp b/gfx/2d/unittest/Main.cpp
new file mode 100644
index 000000000..46a1af5b6
--- /dev/null
+++ b/gfx/2d/unittest/Main.cpp
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SanityChecks.h"
+#include "TestPoint.h"
+#include "TestScaling.h"
+#include "TestBugs.h"
+#ifdef WIN32
+#include "TestDrawTargetD2D.h"
+#endif
+
+#include <string>
+#include <sstream>
+
+struct TestObject {
+  TestBase *test;
+  std::string name;
+};
+
+
+using namespace std;
+
+int
+main()
+{
+  TestObject tests[] = 
+  {
+    { new SanityChecks(), "Sanity Checks" },
+  #ifdef WIN32
+    { new TestDrawTargetD2D(), "DrawTarget (D2D)" },
+  #endif
+    { new TestPoint(), "Point Tests" },
+    { new TestScaling(), "Scaling Tests" }
+    { new TestBugs(), "Bug Tests" }
+  };
+
+  int totalFailures = 0;
+  int totalTests = 0;
+  stringstream message;
+  printf("------ STARTING RUNNING TESTS ------\n");
+  for (int i = 0; i < sizeof(tests) / sizeof(TestObject); i++) {
+    message << "--- RUNNING TESTS: " << tests[i].name << " ---\n";
+    printf(message.str().c_str());
+    message.str("");
+    int failures = 0;
+    totalTests += tests[i].test->RunTests(&failures);
+    totalFailures += failures;
+    // Done with this test!
+    delete tests[i].test;
+  }
+  message << "------ FINISHED RUNNING TESTS ------\nTests run: " << totalTests << " - Passes: " << totalTests - totalFailures << " - Failures: " << totalFailures << "\n";
+  printf(message.str().c_str());
+  return totalFailures;
+}
diff --git a/gfx/2d/unittest/SanityChecks.cpp b/gfx/2d/unittest/SanityChecks.cpp
new file mode 100644
index 000000000..7f109facd
--- /dev/null
+++ b/gfx/2d/unittest/SanityChecks.cpp
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SanityChecks.h"
+
+SanityChecks::SanityChecks()
+{
+  REGISTER_TEST(SanityChecks, AlwaysPasses);
+}
+
+void
+SanityChecks::AlwaysPasses()
+{
+  bool testMustPass = true;
+
+  VERIFY(testMustPass);
+}
diff --git a/gfx/2d/unittest/SanityChecks.h b/gfx/2d/unittest/SanityChecks.h
new file mode 100644
index 000000000..f2a4a0b59
--- /dev/null
+++ b/gfx/2d/unittest/SanityChecks.h
@@ -0,0 +1,16 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "TestBase.h"
+
+class SanityChecks : public TestBase
+{
+public:
+  SanityChecks();
+
+  void AlwaysPasses();
+};
diff --git a/gfx/2d/unittest/TestBase.cpp b/gfx/2d/unittest/TestBase.cpp
new file mode 100644
index 000000000..5818a7299
--- /dev/null
+++ b/gfx/2d/unittest/TestBase.cpp
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "TestBase.h"
+
+#include <sstream>
+
+using namespace std;
+
+int
+TestBase::RunTests(int *aFailures)
+{
+  int testsRun = 0;
+  *aFailures = 0;
+
+  for(unsigned int i = 0; i < mTests.size(); i++) {
+    stringstream stream;
+    stream << "Test (" << mTests[i].name << "): ";
+    LogMessage(stream.str());
+    stream.str("");
+
+    mTestFailed = false;
+
+    // Don't try this at home! We know these are actually pointers to members
+    // of child clases, so we reinterpret cast those child class pointers to
+    // TestBase and then call the functions. Because the compiler believes
+    // these function calls are members of TestBase.
+    ((*reinterpret_cast<TestBase*>((mTests[i].implPointer))).*(mTests[i].funcCall))();
+
+    if (!mTestFailed) {
+      LogMessage("PASSED\n");
+    } else {
+      LogMessage("FAILED\n");
+      (*aFailures)++;
+    }
+    testsRun++;
+  }
+
+  return testsRun;
+}
+
+void
+TestBase::LogMessage(string aMessage)
+{
+  printf("%s", aMessage.c_str());
+}
diff --git a/gfx/2d/unittest/TestBase.h b/gfx/2d/unittest/TestBase.h
new file mode 100644
index 000000000..a57d6a730
--- /dev/null
+++ b/gfx/2d/unittest/TestBase.h
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+#ifdef _MSC_VER
+// On MSVC otherwise our generic member pointer trick doesn't work.
+#pragma pointers_to_members(full_generality, single_inheritance)
+#endif
+
+#define VERIFY(arg) if (!(arg)) { \
+  LogMessage("VERIFY FAILED: "#arg"\n"); \
+  mTestFailed = true; \
+  }
+
+#define REGISTER_TEST(className, testName) \
+  mTests.push_back(Test(static_cast<TestCall>(&className::testName), #testName, this))
+
+class TestBase
+{
+public:
+  TestBase() {}
+
+  typedef void (TestBase::*TestCall)();
+
+  int RunTests(int *aFailures);
+
+protected:
+  static void LogMessage(std::string aMessage);
+
+  struct Test {
+    Test(TestCall aCall, std::string aName, void *aImplPointer)
+      : funcCall(aCall)
+      , name(aName)
+      , implPointer(aImplPointer)
+    {
+    }
+    TestCall funcCall;
+    std::string name;
+    void *implPointer;
+  };
+  std::vector<Test> mTests;
+
+  bool mTestFailed;
+
+private:
+  // This doesn't really work with our generic member pointer trick.
+  TestBase(const TestBase &aOther);
+};
diff --git a/gfx/2d/unittest/TestBugs.cpp b/gfx/2d/unittest/TestBugs.cpp
new file mode 100644
index 000000000..f127eed8b
--- /dev/null
+++ b/gfx/2d/unittest/TestBugs.cpp
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "TestBugs.h"
+#include "2D.h"
+#include <string.h>
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+
+TestBugs::TestBugs()
+{
+  REGISTER_TEST(TestBugs, CairoClip918671);
+  REGISTER_TEST(TestBugs, PushPopClip950550);
+}
+
+void
+TestBugs::CairoClip918671()
+{
+  RefPtr<DrawTarget> dt = Factory::CreateDrawTarget(BackendType::CAIRO,
+                                                    IntSize(100, 100),
+                                                    SurfaceFormat::B8G8R8A8);
+  RefPtr<DrawTarget> ref = Factory::CreateDrawTarget(BackendType::CAIRO,
+                                                     IntSize(100, 100),
+                                                     SurfaceFormat::B8G8R8A8);
+  // Create a path that extends around the center rect but doesn't intersect it.
+  RefPtr<PathBuilder> pb1 = dt->CreatePathBuilder();
+  pb1->MoveTo(Point(10, 10));
+  pb1->LineTo(Point(90, 10));
+  pb1->LineTo(Point(90, 20));
+  pb1->LineTo(Point(10, 20));
+  pb1->Close();
+  pb1->MoveTo(Point(90, 90));
+  pb1->LineTo(Point(91, 90));
+  pb1->LineTo(Point(91, 91));
+  pb1->LineTo(Point(91, 90));
+  pb1->Close();
+
+  RefPtr<Path> path1 = pb1->Finish();
+  dt->PushClip(path1);
+
+  // This center rect must NOT be rectilinear!
+  RefPtr<PathBuilder> pb2 = dt->CreatePathBuilder();
+  pb2->MoveTo(Point(50, 50));
+  pb2->LineTo(Point(55, 51));
+  pb2->LineTo(Point(54, 55));
+  pb2->LineTo(Point(50, 56));
+  pb2->Close();
+
+  RefPtr<Path> path2 = pb2->Finish();
+  dt->PushClip(path2);
+
+  dt->FillRect(Rect(0, 0, 100, 100), ColorPattern(Color(1,0,0)));
+
+  RefPtr<SourceSurface> surf1 = dt->Snapshot();
+  RefPtr<SourceSurface> surf2 = ref->Snapshot();
+
+  RefPtr<DataSourceSurface> dataSurf1 = surf1->GetDataSurface();
+  RefPtr<DataSourceSurface> dataSurf2 = surf2->GetDataSurface();
+
+  for (int y = 0; y < dt->GetSize().height; y++) {
+    VERIFY(memcmp(dataSurf1->GetData() + y * dataSurf1->Stride(),
+                  dataSurf2->GetData() + y * dataSurf2->Stride(),
+                  dataSurf1->GetSize().width * 4) == 0);
+  }
+
+}
+
+void
+TestBugs::PushPopClip950550()
+{
+  RefPtr<DrawTarget> dt = Factory::CreateDrawTarget(BackendType::CAIRO,
+                                                    IntSize(500, 500),
+                                                    SurfaceFormat::B8G8R8A8);
+  dt->PushClipRect(Rect(0, 0, 100, 100));
+  Matrix m(1, 0, 0, 1, 45, -100);
+  dt->SetTransform(m);
+  dt->PopClip();
+
+  // We fail the test if we assert in this call because our draw target's
+  // transforms are out of sync.
+  dt->FillRect(Rect(50, 50, 50, 50), ColorPattern(Color(0.5f, 0, 0, 1.0f)));
+}
+
diff --git a/gfx/2d/unittest/TestBugs.h b/gfx/2d/unittest/TestBugs.h
new file mode 100644
index 000000000..0c715df44
--- /dev/null
+++ b/gfx/2d/unittest/TestBugs.h
@@ -0,0 +1,18 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "TestBase.h"
+
+class TestBugs : public TestBase
+{
+public:
+  TestBugs();
+
+  void CairoClip918671();
+  void PushPopClip950550();
+};
+
diff --git a/gfx/2d/unittest/TestCairo.cpp b/gfx/2d/unittest/TestCairo.cpp
new file mode 100644
index 000000000..7df604695
--- /dev/null
+++ b/gfx/2d/unittest/TestCairo.cpp
@@ -0,0 +1,96 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+#include "cairo.h"
+
+#include "gtest/gtest.h"
+
+namespace mozilla {
+namespace layers {
+
+void TryCircle(double centerX, double centerY, double radius) {
+  printf("TestCairo:TryArcs centerY %f, radius %f\n",centerY,radius);
+
+  cairo_surface_t *surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,8,21);
+  ASSERT_TRUE(surf != nullptr);
+
+  cairo_t *cairo = cairo_create(surf);
+  ASSERT_TRUE(cairo != nullptr);
+
+  cairo_set_antialias(cairo, CAIRO_ANTIALIAS_NONE);
+  cairo_arc(cairo, 0.0, centerY, radius, 0.0, 6.2831853071795862);
+  cairo_fill_preserve(cairo);
+
+  cairo_surface_destroy(surf);
+  cairo_destroy(cairo);
+}
+
+TEST(Cairo, Simple) {
+  TryCircle(0.0, 0.0, 14.0);
+  TryCircle(0.0, 1.0, 22.4);
+  TryCircle(1.0, 0.0, 1422.4);
+  TryCircle(1.0, 1.0, 3422.4);
+  TryCircle(-10.0, 1.0, -2);
+}
+
+TEST(Cairo, Bug825721) {
+  // OK:
+  TryCircle(0.0, 0.0, 8761126469220696064.0);
+  TryCircle(0.0, 1.0, 8761126469220696064.0);
+
+  // OK:
+  TryCircle(1.0, 0.0, 5761126469220696064.0);
+
+  // This was the crash in 825721.  Note that centerY has to be non-zero,
+  // and radius has to be not only large, but in particular range.
+  // 825721 has a band-aid fix, where the crash is inevitable, but does
+  // not fix the cause.  The same code crashes in cairo standalone.
+  TryCircle(0.0, 1.0, 5761126469220696064.0);
+}
+
+TEST(Cairo, Bug1063486) {
+
+  double x1, y1, x2, y2;
+  const double epsilon = .01;
+
+  cairo_surface_t *surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 1, 1);
+  ASSERT_TRUE(surf != nullptr);
+
+  cairo_t *cairo = cairo_create(surf);
+  ASSERT_TRUE(cairo != nullptr);
+
+  printf("Path 1\n");
+  cairo_move_to(cairo, -20, -10);
+  cairo_line_to(cairo, 20, -10);
+  cairo_line_to(cairo, 20, 10);
+  cairo_curve_to(cairo, 10,10, -10,10, -20,10);
+  cairo_curve_to(cairo, -30,10, -30,-10, -20,-10);
+
+  cairo_path_extents(cairo, &x1, &y1, &x2, &y2);
+
+  ASSERT_LT(std::abs(-27.5 - x1), epsilon); // the failing coordinate
+  ASSERT_LT(std::abs(-10 - y1), epsilon);
+  ASSERT_LT(std::abs(20 - x2), epsilon);
+  ASSERT_LT(std::abs(10 - y2), epsilon);
+
+  printf("Path 2\n");
+  cairo_new_path(cairo);
+  cairo_move_to(cairo, 10, 30);
+  cairo_line_to(cairo, 90, 30);
+  cairo_curve_to(cairo, 30,30, 30,30, 10,30);
+  cairo_curve_to(cairo, 0,30, 0,0, 30,5);
+
+  cairo_path_extents(cairo, &x1, &y1, &x2, &y2);
+
+  ASSERT_LT(std::abs(4.019531 - x1), epsilon); // the failing coordinate
+  ASSERT_LT(std::abs(4.437500 - y1), epsilon);
+  ASSERT_LT(std::abs(90. - x2), epsilon);
+  ASSERT_LT(std::abs(30. - y2), epsilon);
+
+  cairo_surface_destroy(surf);
+  cairo_destroy(cairo);
+}
+
+} // namespace layers
+} // namespace mozilla
diff --git a/gfx/2d/unittest/TestDrawTargetBase.cpp b/gfx/2d/unittest/TestDrawTargetBase.cpp
new file mode 100644
index 000000000..2a0d95ed6
--- /dev/null
+++ b/gfx/2d/unittest/TestDrawTargetBase.cpp
@@ -0,0 +1,109 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "TestDrawTargetBase.h"
+#include <sstream>
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+using namespace std;
+
+TestDrawTargetBase::TestDrawTargetBase()
+{
+  REGISTER_TEST(TestDrawTargetBase, Initialized);
+  REGISTER_TEST(TestDrawTargetBase, FillCompletely);
+  REGISTER_TEST(TestDrawTargetBase, FillRect);
+}
+
+void
+TestDrawTargetBase::Initialized()
+{
+  VERIFY(mDT);
+}
+
+void
+TestDrawTargetBase::FillCompletely()
+{
+  mDT->FillRect(Rect(0, 0, DT_WIDTH, DT_HEIGHT), ColorPattern(Color(0, 0.5f, 0, 1.0f)));
+
+  RefreshSnapshot();
+
+  VerifyAllPixels(Color(0, 0.5f, 0, 1.0f));
+}
+
+void
+TestDrawTargetBase::FillRect()
+{
+  mDT->FillRect(Rect(0, 0, DT_WIDTH, DT_HEIGHT), ColorPattern(Color(0, 0.5f, 0, 1.0f)));
+  mDT->FillRect(Rect(50, 50, 50, 50), ColorPattern(Color(0.5f, 0, 0, 1.0f)));
+
+  RefreshSnapshot();
+
+  VerifyPixel(IntPoint(49, 49), Color(0, 0.5f, 0, 1.0f));
+  VerifyPixel(IntPoint(50, 50), Color(0.5f, 0, 0, 1.0f));
+  VerifyPixel(IntPoint(99, 99), Color(0.5f, 0, 0, 1.0f));
+  VerifyPixel(IntPoint(100, 100), Color(0, 0.5f, 0, 1.0f));
+}
+
+void
+TestDrawTargetBase::RefreshSnapshot()
+{
+  RefPtr<SourceSurface> snapshot = mDT->Snapshot();
+  mDataSnapshot = snapshot->GetDataSurface();
+}
+
+void
+TestDrawTargetBase::VerifyAllPixels(const Color &aColor)
+{
+  uint32_t *colVal = (uint32_t*)mDataSnapshot->GetData();
+
+  uint32_t expected = RGBAPixelFromColor(aColor);
+
+  for (int y = 0; y < DT_HEIGHT; y++) {
+    for (int x = 0; x < DT_WIDTH; x++) {
+      if (colVal[y * (mDataSnapshot->Stride() / 4) + x] != expected) {
+        LogMessage("VerifyAllPixels Failed\n");
+        mTestFailed = true;
+        return;
+      }
+    }
+  }
+}
+
+void
+TestDrawTargetBase::VerifyPixel(const IntPoint &aPoint, mozilla::gfx::Color &aColor)
+{
+  uint32_t *colVal = (uint32_t*)mDataSnapshot->GetData();
+
+  uint32_t expected = RGBAPixelFromColor(aColor);
+  uint32_t rawActual = colVal[aPoint.y * (mDataSnapshot->Stride() / 4) + aPoint.x];
+
+  if (rawActual != expected) {
+    stringstream message;
+    uint32_t actb = rawActual & 0xFF;
+    uint32_t actg = (rawActual & 0xFF00) >> 8;
+    uint32_t actr = (rawActual & 0xFF0000) >> 16;
+    uint32_t acta = (rawActual & 0xFF000000) >> 24;
+    uint32_t expb = expected & 0xFF;
+    uint32_t expg = (expected & 0xFF00) >> 8;
+    uint32_t expr = (expected & 0xFF0000) >> 16;
+    uint32_t expa = (expected & 0xFF000000) >> 24;
+
+    message << "Verify Pixel (" << aPoint.x << "x" << aPoint.y << ") Failed."
+      " Expected (" << expr << "," << expg << "," << expb << "," << expa << ") "
+      " Got (" << actr << "," << actg << "," << actb << "," << acta << ")\n";
+
+    LogMessage(message.str());
+    mTestFailed = true;
+    return;
+  }
+}
+
+uint32_t
+TestDrawTargetBase::RGBAPixelFromColor(const Color &aColor)
+{
+  return uint8_t((aColor.b * 255) + 0.5f) | uint8_t((aColor.g * 255) + 0.5f) << 8 |
+         uint8_t((aColor.r * 255) + 0.5f) << 16 | uint8_t((aColor.a * 255) + 0.5f) << 24;
+}
diff --git a/gfx/2d/unittest/TestDrawTargetBase.h b/gfx/2d/unittest/TestDrawTargetBase.h
new file mode 100644
index 000000000..06a62413f
--- /dev/null
+++ b/gfx/2d/unittest/TestDrawTargetBase.h
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "2D.h"
+#include "TestBase.h"
+
+#define DT_WIDTH 500
+#define DT_HEIGHT 500
+
+/* This general DrawTarget test class can be reimplemented by a child class
+ * with optional additional drawtarget-specific tests. And is intended to run
+ * on a 500x500 32 BPP drawtarget.
+ */
+class TestDrawTargetBase : public TestBase
+{
+public:
+  void Initialized();
+  void FillCompletely();
+  void FillRect();
+
+protected:
+  TestDrawTargetBase();
+
+  void RefreshSnapshot();
+
+  void VerifyAllPixels(const mozilla::gfx::Color &aColor);
+  void VerifyPixel(const mozilla::gfx::IntPoint &aPoint,
+                   mozilla::gfx::Color &aColor);
+
+  uint32_t RGBAPixelFromColor(const mozilla::gfx::Color &aColor);
+
+  RefPtr<mozilla::gfx::DrawTarget> mDT;
+  RefPtr<mozilla::gfx::DataSourceSurface> mDataSnapshot;
+};
diff --git a/gfx/2d/unittest/TestDrawTargetD2D.cpp b/gfx/2d/unittest/TestDrawTargetD2D.cpp
new file mode 100644
index 000000000..0715f93d8
--- /dev/null
+++ b/gfx/2d/unittest/TestDrawTargetD2D.cpp
@@ -0,0 +1,23 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "TestDrawTargetD2D.h"
+
+using namespace mozilla::gfx;
+TestDrawTargetD2D::TestDrawTargetD2D()
+{
+  ::D3D10CreateDevice1(nullptr,
+                       D3D10_DRIVER_TYPE_HARDWARE,
+                       nullptr,
+                       D3D10_CREATE_DEVICE_BGRA_SUPPORT |
+                       D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS,
+                       D3D10_FEATURE_LEVEL_10_0,
+                       D3D10_1_SDK_VERSION,
+                       getter_AddRefs(mDevice));
+
+  Factory::SetDirect3D10Device(mDevice);
+
+  mDT = Factory::CreateDrawTarget(BackendType::DIRECT2D, IntSize(DT_WIDTH, DT_HEIGHT), SurfaceFormat::B8G8R8A8);
+}
diff --git a/gfx/2d/unittest/TestDrawTargetD2D.h b/gfx/2d/unittest/TestDrawTargetD2D.h
new file mode 100644
index 000000000..97bb88cf2
--- /dev/null
+++ b/gfx/2d/unittest/TestDrawTargetD2D.h
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "TestDrawTargetBase.h"
+
+#include <d3d10_1.h>
+
+class TestDrawTargetD2D : public TestDrawTargetBase
+{
+public:
+  TestDrawTargetD2D();
+
+private:
+  RefPtr<ID3D10Device1> mDevice;
+};
diff --git a/gfx/2d/unittest/TestPoint.cpp b/gfx/2d/unittest/TestPoint.cpp
new file mode 100644
index 000000000..6aa2b6a35
--- /dev/null
+++ b/gfx/2d/unittest/TestPoint.cpp
@@ -0,0 +1,46 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "TestPoint.h"
+
+#include "Point.h"
+
+using namespace mozilla::gfx;
+
+TestPoint::TestPoint()
+{
+  REGISTER_TEST(TestPoint, Addition);
+  REGISTER_TEST(TestPoint, Subtraction);
+}
+
+void
+TestPoint::Addition()
+{
+  Point a, b;
+  a.x = 2;
+  a.y = 2;
+  b.x = 5;
+  b.y = -5;
+
+  a += b;
+
+  VERIFY(a.x == 7.f);
+  VERIFY(a.y == -3.f);
+}
+
+void
+TestPoint::Subtraction()
+{
+  Point a, b;
+  a.x = 2;
+  a.y = 2;
+  b.x = 5;
+  b.y = -5;
+
+  a -= b;
+
+  VERIFY(a.x == -3.f);
+  VERIFY(a.y == 7.f);
+}
diff --git a/gfx/2d/unittest/TestPoint.h b/gfx/2d/unittest/TestPoint.h
new file mode 100644
index 000000000..813d66c2f
--- /dev/null
+++ b/gfx/2d/unittest/TestPoint.h
@@ -0,0 +1,17 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "TestBase.h"
+
+class TestPoint : public TestBase
+{
+public:
+  TestPoint();
+
+  void Addition();
+  void Subtraction();
+};
diff --git a/gfx/2d/unittest/TestScaling.cpp b/gfx/2d/unittest/TestScaling.cpp
new file mode 100644
index 000000000..60e1acbf0
--- /dev/null
+++ b/gfx/2d/unittest/TestScaling.cpp
@@ -0,0 +1,249 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "TestScaling.h"
+
+#include "ImageScaling.h"
+
+using namespace mozilla::gfx;
+
+TestScaling::TestScaling()
+{
+  REGISTER_TEST(TestScaling, BasicHalfScale);
+  REGISTER_TEST(TestScaling, DoubleHalfScale);
+  REGISTER_TEST(TestScaling, UnevenHalfScale);
+  REGISTER_TEST(TestScaling, OddStrideHalfScale);
+  REGISTER_TEST(TestScaling, VerticalHalfScale);
+  REGISTER_TEST(TestScaling, HorizontalHalfScale);
+  REGISTER_TEST(TestScaling, MixedHalfScale);
+}
+
+void
+TestScaling::BasicHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(500 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      pixels[y * 500 + x + 1] = 0xff00ffff;
+      pixels[(y + 1) * 500 + x] = 0xff000000;
+      pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(500, 500));
+
+  scaler.ScaleForSize(IntSize(220, 240));
+
+  VERIFY(scaler.GetSize().width == 250);
+  VERIFY(scaler.GetSize().height == 250);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 250; y++) {
+    for (int x = 0; x < 250; x++) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
+    }
+  }
+}
+
+void
+TestScaling::DoubleHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(500 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      pixels[y * 500 + x + 1] = 0xff00ffff;
+      pixels[(y + 1) * 500 + x] = 0xff000000;
+      pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(500, 500));
+
+  scaler.ScaleForSize(IntSize(120, 110));
+  VERIFY(scaler.GetSize().width == 125);
+  VERIFY(scaler.GetSize().height == 125);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 125; y++) {
+    for (int x = 0; x < 125; x++) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
+    }
+  }
+}
+
+void
+TestScaling::UnevenHalfScale()
+{
+  std::vector<uint8_t> data;
+  // Use a 16-byte aligned stride still, we test none-aligned strides
+  // separately.
+  data.resize(499 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      if (x < 498) {
+        pixels[y * 500 + x + 1] = 0xff00ffff;
+      }
+      if (y < 498) {
+        pixels[(y + 1) * 500 + x] = 0xff000000;
+        if (x < 498) {
+          pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+        }
+      }
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(499, 499));
+
+  scaler.ScaleForSize(IntSize(220, 220));
+  VERIFY(scaler.GetSize().width == 249);
+  VERIFY(scaler.GetSize().height == 249);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 249; y++) {
+    for (int x = 0; x < 249; x++) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
+    }
+  }
+}
+
+void
+TestScaling::OddStrideHalfScale()
+{
+  std::vector<uint8_t> data;
+  // Use a 4-byte aligned stride to test if that doesn't cause any issues.
+  data.resize(499 * 499 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 499 + x] = 0xff00ff00;
+      if (x < 498) {
+        pixels[y * 499 + x + 1] = 0xff00ffff;
+      }
+      if (y < 498) {
+        pixels[(y + 1) * 499 + x] = 0xff000000;
+        if (x < 498) {
+          pixels[(y + 1) * 499 + x + 1] = 0xff0000ff;
+        }
+      }
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 499 * 4, IntSize(499, 499));
+
+  scaler.ScaleForSize(IntSize(220, 220));
+  VERIFY(scaler.GetSize().width == 249);
+  VERIFY(scaler.GetSize().height == 249);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 249; y++) {
+    for (int x = 0; x < 249; x++) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
+    }
+  }
+}
+void
+TestScaling::VerticalHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(500 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      pixels[y * 500 + x + 1] = 0xff00ffff;
+      pixels[(y + 1) * 500 + x] = 0xff000000;
+      pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(500, 500));
+
+  scaler.ScaleForSize(IntSize(400, 240));
+  VERIFY(scaler.GetSize().width == 500);
+  VERIFY(scaler.GetSize().height == 250);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 250; y++) {
+    for (int x = 0; x < 500; x += 2) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f00);
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 1] == 0xff007fff);
+    }
+  }
+}
+
+void
+TestScaling::HorizontalHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(520 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y ++) {
+    for (int x = 0; x < 520; x += 8) {
+      pixels[y * 520 + x] = 0xff00ff00;
+      pixels[y * 520 + x + 1] = 0xff00ffff;
+      pixels[y * 520 + x + 2] = 0xff000000;
+      pixels[y * 520 + x + 3] = 0xff0000ff;
+      pixels[y * 520 + x + 4] = 0xffff00ff;
+      pixels[y * 520 + x + 5] = 0xff0000ff;
+      pixels[y * 520 + x + 6] = 0xffffffff;
+      pixels[y * 520 + x + 7] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 520 * 4, IntSize(520, 500));
+
+  scaler.ScaleForSize(IntSize(240, 400));
+  VERIFY(scaler.GetSize().width == 260);
+  VERIFY(scaler.GetSize().height == 500);
+
+  pixels = (uint32_t*)scaler.GetScaledData();
+
+  for (int y = 0; y < 500; y++) {
+    for (int x = 0; x < 260; x += 4) {
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff00ff7f);
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 1] == 0xff00007f);
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 2] == 0xff7f00ff);
+      VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 3] == 0xff7f7fff);
+    }
+  }
+}
+
+void
+TestScaling::MixedHalfScale()
+{
+  std::vector<uint8_t> data;
+  data.resize(500 * 500 * 4);
+
+  uint32_t *pixels = reinterpret_cast<uint32_t*>(&data.front());
+  for (int y = 0; y < 500; y += 2) {
+    for (int x = 0; x < 500; x += 2) {
+      pixels[y * 500 + x] = 0xff00ff00;
+      pixels[y * 500 + x + 1] = 0xff00ffff;
+      pixels[(y + 1) * 500 + x] = 0xff000000;
+      pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
+    }
+  }
+  ImageHalfScaler scaler(&data.front(), 500 * 4, IntSize(500, 500));
+
+  scaler.ScaleForSize(IntSize(120, 240));
+  VERIFY(scaler.GetSize().width == 125);
+  VERIFY(scaler.GetSize().height == 250);
+  scaler.ScaleForSize(IntSize(240, 120));
+  VERIFY(scaler.GetSize().width == 250);
+  VERIFY(scaler.GetSize().height == 125);
+}
diff --git a/gfx/2d/unittest/TestScaling.h b/gfx/2d/unittest/TestScaling.h
new file mode 100644
index 000000000..e9bd1a8e0
--- /dev/null
+++ b/gfx/2d/unittest/TestScaling.h
@@ -0,0 +1,22 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "TestBase.h"
+
+class TestScaling : public TestBase
+{
+public:
+  TestScaling();
+
+  void BasicHalfScale();
+  void DoubleHalfScale();
+  void UnevenHalfScale();
+  void OddStrideHalfScale();
+  void VerticalHalfScale();
+  void HorizontalHalfScale();
+  void MixedHalfScale();
+};
diff --git a/gfx/2d/unittest/unittest.vcxproj b/gfx/2d/unittest/unittest.vcxproj
new file mode 100644
index 000000000..7ddf92530
--- /dev/null
+++ b/gfx/2d/unittest/unittest.vcxproj
@@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <ItemGroup Label="ProjectConfigurations">

+    <ProjectConfiguration Include="Debug|Win32">

+      <Configuration>Debug</Configuration>

+      <Platform>Win32</Platform>

+    </ProjectConfiguration>

+    <ProjectConfiguration Include="Release|Win32">

+      <Configuration>Release</Configuration>

+      <Platform>Win32</Platform>

+    </ProjectConfiguration>

+  </ItemGroup>

+  <PropertyGroup Label="Globals">

+    <ProjectGuid>{CCF4BC8B-0CED-47CA-B621-ABF1832527D9}</ProjectGuid>

+    <RootNamespace>unittest</RootNamespace>

+  </PropertyGroup>

+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />

+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">

+    <ConfigurationType>Application</ConfigurationType>

+    <UseDebugLibraries>true</UseDebugLibraries>

+    <CharacterSet>MultiByte</CharacterSet>

+  </PropertyGroup>

+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">

+    <ConfigurationType>Application</ConfigurationType>

+    <UseDebugLibraries>false</UseDebugLibraries>

+    <WholeProgramOptimization>true</WholeProgramOptimization>

+    <CharacterSet>MultiByte</CharacterSet>

+  </PropertyGroup>

+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />

+  <ImportGroup Label="ExtensionSettings">

+  </ImportGroup>

+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">

+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />

+  </ImportGroup>

+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">

+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />

+  </ImportGroup>

+  <PropertyGroup Label="UserMacros" />

+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">

+    <LibraryPath>$(DXSDK_DIR)\Lib\x86;$(VCInstallDir)lib;$(VCInstallDir)atlmfc\lib;$(WindowsSdkDir)lib;$(FrameworkSDKDir)\lib</LibraryPath>

+    <IncludePath>$(ProjectDir)..\;$(IncludePath)</IncludePath>

+  </PropertyGroup>

+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">

+    <LibraryPath>$(DXSDK_DIR)\Lib\x86;$(VCInstallDir)lib;$(VCInstallDir)lib;$(VCInstallDir)atlmfc\lib;$(WindowsSdkDir)lib;$(FrameworkSDKDir)\lib</LibraryPath>

+  </PropertyGroup>

+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">

+    <ClCompile>

+      <WarningLevel>Level3</WarningLevel>

+      <Optimization>Disabled</Optimization>

+      <AdditionalIncludeDirectories>../</AdditionalIncludeDirectories>

+      <PreprocessorDefinitions>WIN32;_MBCS;%(PreprocessorDefinitions)</PreprocessorDefinitions>

+    </ClCompile>

+    <Link>

+      <GenerateDebugInformation>true</GenerateDebugInformation>

+      <AdditionalDependencies>../$(Configuration)/gfx2d.lib;dxguid.lib;d3d10_1.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+    </Link>

+  </ItemDefinitionGroup>

+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">

+    <ClCompile>

+      <WarningLevel>Level3</WarningLevel>

+      <Optimization>MaxSpeed</Optimization>

+      <FunctionLevelLinking>true</FunctionLevelLinking>

+      <IntrinsicFunctions>true</IntrinsicFunctions>

+      <AdditionalIncludeDirectories>../</AdditionalIncludeDirectories>

+      <PreprocessorDefinitions>WIN32;_MBCS;%(PreprocessorDefinitions)</PreprocessorDefinitions>

+    </ClCompile>

+    <Link>

+      <GenerateDebugInformation>true</GenerateDebugInformation>

+      <EnableCOMDATFolding>true</EnableCOMDATFolding>

+      <OptimizeReferences>true</OptimizeReferences>

+      <AdditionalDependencies>../$(Configuration)/gfx2d.lib;dxguid.lib;d3d10_1.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>

+    </Link>

+  </ItemDefinitionGroup>

+  <ItemGroup>

+    <ClCompile Include="Main.cpp" />

+    <ClCompile Include="SanityChecks.cpp" />

+    <ClCompile Include="TestBase.cpp" />

+    <ClCompile Include="TestDrawTargetBase.cpp" />

+    <ClCompile Include="TestDrawTargetD2D.cpp" />

+    <ClCompile Include="TestPoint.cpp" />

+    <ClCompile Include="TestScaling.cpp" />

+  </ItemGroup>

+  <ItemGroup>

+    <ClInclude Include="TestDrawTargetBase.h" />

+    <ClInclude Include="SanityChecks.h" />

+    <ClInclude Include="TestBase.h" />

+    <ClInclude Include="TestDrawTargetD2D.h" />

+    <ClInclude Include="TestPoint.h" />

+    <ClInclude Include="TestScaling.h" />

+  </ItemGroup>

+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />

+  <ImportGroup Label="ExtensionTargets">

+  </ImportGroup>

+</Project>
\ No newline at end of file