Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

17 files changed, 979 insertions, 0 deletions

diff --git a/gfx/2d/unittest/Main.cpp b/gfx/2d/unittest/Main.cpp
new file mode 100644
index 0000000000..0a6c9b0401
--- /dev/null
+++ b/gfx/2d/unittest/Main.cpp
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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;
+};
+
+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;
+  std::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 0000000000..c8db1dd69d
--- /dev/null
+++ b/gfx/2d/unittest/SanityChecks.cpp
@@ -0,0 +1,15 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 0000000000..6161b783eb
--- /dev/null
+++ b/gfx/2d/unittest/SanityChecks.h
@@ -0,0 +1,16 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 0000000000..bf78008489
--- /dev/null
+++ b/gfx/2d/unittest/TestBase.cpp
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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>
+
+int TestBase::RunTests(int* aFailures) {
+  int testsRun = 0;
+  *aFailures = 0;
+
+  for (unsigned int i = 0; i < mTests.size(); i++) {
+    std::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(std::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 0000000000..fb9326e856
--- /dev/null
+++ b/gfx/2d/unittest/TestBase.h
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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>
+
+#if defined(_MSC_VER) && !defined(__clang__)
+// On MSVC otherwise our generic member pointer trick doesn't work.
+// JYA: Do we still need this?
+#  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() = default;
+
+  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 0000000000..545166007a
--- /dev/null
+++ b/gfx/2d/unittest/TestBugs.cpp
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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(DeviceColor(1, 0, 0)));
+
+  RefPtr<SourceSurface> surf1 = dt->Snapshot();
+  RefPtr<SourceSurface> surf2 = ref->Snapshot();
+
+  RefPtr<DataSourceSurface> dataSurf1 = surf1->GetDataSurface();
+  RefPtr<DataSourceSurface> dataSurf2 = surf2->GetDataSurface();
+
+  DataSourceSurface::ScopedMap map1(dataSurf1, DataSourceSurface::READ);
+  DataSourceSurface::ScopedMap map2(dataSurf2, DataSourceSurface::READ);
+  for (int y = 0; y < dt->GetSize().height; y++) {
+    VERIFY(memcmp(map1.GetData() + y * map1.GetStride(),
+                  map2.GetData() + y * map2.GetStride(),
+                  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(DeviceColor(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 0000000000..c337b05cff
--- /dev/null
+++ b/gfx/2d/unittest/TestBugs.h
@@ -0,0 +1,17 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 0000000000..4ed7ad4d4a
--- /dev/null
+++ b/gfx/2d/unittest/TestCairo.cpp
@@ -0,0 +1,99 @@
+/* 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 {
+
+static 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 0000000000..2ef817cd86
--- /dev/null
+++ b/gfx/2d/unittest/TestDrawTargetBase.cpp
@@ -0,0 +1,103 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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;
+
+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(DeviceColor(0, 0.5f, 0, 1.0f)));
+
+  RefreshSnapshot();
+
+  VerifyAllPixels(DeviceColor(0, 0.5f, 0, 1.0f));
+}
+
+void TestDrawTargetBase::FillRect() {
+  mDT->FillRect(Rect(0, 0, DT_WIDTH, DT_HEIGHT),
+                ColorPattern(DeviceColor(0, 0.5f, 0, 1.0f)));
+  mDT->FillRect(Rect(50, 50, 50, 50),
+                ColorPattern(DeviceColor(0.5f, 0, 0, 1.0f)));
+
+  RefreshSnapshot();
+
+  VerifyPixel(IntPoint(49, 49), DeviceColor(0, 0.5f, 0, 1.0f));
+  VerifyPixel(IntPoint(50, 50), DeviceColor(0.5f, 0, 0, 1.0f));
+  VerifyPixel(IntPoint(99, 99), DeviceColor(0.5f, 0, 0, 1.0f));
+  VerifyPixel(IntPoint(100, 100), DeviceColor(0, 0.5f, 0, 1.0f));
+}
+
+void TestDrawTargetBase::RefreshSnapshot() {
+  RefPtr<SourceSurface> snapshot = mDT->Snapshot();
+  mDataSnapshot = snapshot->GetDataSurface();
+}
+
+void TestDrawTargetBase::VerifyAllPixels(const DeviceColor& 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::DeviceColor& 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 DeviceColor& 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 0000000000..3f13a63106
--- /dev/null
+++ b/gfx/2d/unittest/TestDrawTargetBase.h
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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::DeviceColor& aColor);
+  void VerifyPixel(const mozilla::gfx::IntPoint& aPoint,
+                   mozilla::gfx::DeviceColor& aColor);
+
+  uint32_t RGBAPixelFromColor(const mozilla::gfx::DeviceColor& 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 0000000000..cba63129fd
--- /dev/null
+++ b/gfx/2d/unittest/TestDrawTargetD2D.cpp
@@ -0,0 +1,22 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 0000000000..f4c88336a4
--- /dev/null
+++ b/gfx/2d/unittest/TestDrawTargetD2D.h
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 0000000000..e79ff01ab3
--- /dev/null
+++ b/gfx/2d/unittest/TestPoint.cpp
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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);
+  REGISTER_TEST(TestPoint, RoundToMultiple);
+}
+
+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);
+}
+
+void TestPoint::RoundToMultiple() {
+  const int32_t roundTo = 2;
+
+  IntPoint p(478, -394);
+  VERIFY(p.RoundedToMultiple(roundTo) == p);
+
+  IntPoint p2(478, 393);
+  VERIFY(p2.RoundedToMultiple(roundTo) != p2);
+}
diff --git a/gfx/2d/unittest/TestPoint.h b/gfx/2d/unittest/TestPoint.h
new file mode 100644
index 0000000000..cb5b6a3de3
--- /dev/null
+++ b/gfx/2d/unittest/TestPoint.h
@@ -0,0 +1,18 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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();
+  void RoundToMultiple();
+};
diff --git a/gfx/2d/unittest/TestScaling.cpp b/gfx/2d/unittest/TestScaling.cpp
new file mode 100644
index 0000000000..fd15455f26
--- /dev/null
+++ b/gfx/2d/unittest/TestScaling.cpp
@@ -0,0 +1,235 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 0000000000..dbbcda91fa
--- /dev/null
+++ b/gfx/2d/unittest/TestScaling.h
@@ -0,0 +1,22 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 0000000000..7ddf925303
--- /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