Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 1384 insertions, 0 deletions

diff --git a/gfx/2d/Factory.cpp b/gfx/2d/Factory.cpp
new file mode 100644
index 0000000000..abf7a8669b
--- /dev/null
+++ b/gfx/2d/Factory.cpp
@@ -0,0 +1,1384 @@
+/* -*- 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 "2D.h"
+#include "Swizzle.h"
+
+#ifdef USE_CAIRO
+#  include "DrawTargetCairo.h"
+#  include "PathCairo.h"
+#  include "SourceSurfaceCairo.h"
+#endif
+
+#include "DrawTargetSkia.h"
+#include "PathSkia.h"
+#include "ScaledFontBase.h"
+
+#if defined(WIN32)
+#  include "ScaledFontWin.h"
+#  include "NativeFontResourceGDI.h"
+#  include "UnscaledFontGDI.h"
+#endif
+
+#ifdef XP_DARWIN
+#  include "ScaledFontMac.h"
+#  include "NativeFontResourceMac.h"
+#  include "UnscaledFontMac.h"
+#endif
+
+#ifdef MOZ_WIDGET_GTK
+#  include "ScaledFontFontconfig.h"
+#  include "NativeFontResourceFreeType.h"
+#  include "UnscaledFontFreeType.h"
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "ScaledFontFreeType.h"
+#  include "NativeFontResourceFreeType.h"
+#  include "UnscaledFontFreeType.h"
+#endif
+
+#ifdef WIN32
+#  include "DrawTargetD2D1.h"
+#  include "PathD2D.h"
+#  include "ScaledFontDWrite.h"
+#  include "NativeFontResourceDWrite.h"
+#  include "UnscaledFontDWrite.h"
+#  include <d3d10_1.h>
+#  include <stdlib.h>
+#  include "HelpersD2D.h"
+#  include "DXVA2Manager.h"
+#  include "ImageContainer.h"
+#  include "mozilla/layers/LayersSurfaces.h"
+#  include "mozilla/layers/TextureD3D11.h"
+#  include "nsWindowsHelpers.h"
+#endif
+
+#include "DrawTargetOffset.h"
+#include "DrawTargetRecording.h"
+
+#include "SourceSurfaceRawData.h"
+
+#include "mozilla/CheckedInt.h"
+
+#ifdef MOZ_ENABLE_FREETYPE
+#  include "ft2build.h"
+#  include FT_FREETYPE_H
+#endif
+#include "mozilla/StaticPrefs_gfx.h"
+
+#if defined(MOZ_LOGGING)
+GFX2D_API mozilla::LogModule* GetGFX2DLog() {
+  static mozilla::LazyLogModule sLog("gfx2d");
+  return sLog;
+}
+#endif
+
+// The following code was largely taken from xpcom/glue/SSE.cpp and
+// made a little simpler.
+enum CPUIDRegister { eax = 0, ebx = 1, ecx = 2, edx = 3 };
+
+#ifdef HAVE_CPUID_H
+
+#  if !(defined(__SSE2__) || defined(_M_X64) ||      \
+        (defined(_M_IX86_FP) && _M_IX86_FP >= 2)) || \
+      !defined(__SSE4__)
+// cpuid.h is available on gcc 4.3 and higher on i386 and x86_64
+#    include <cpuid.h>
+
+static inline bool HasCPUIDBit(unsigned int level, CPUIDRegister reg,
+                               unsigned int bit) {
+  unsigned int regs[4];
+  return __get_cpuid(level, &regs[0], &regs[1], &regs[2], &regs[3]) &&
+         (regs[reg] & bit);
+}
+#  endif
+
+#  define HAVE_CPU_DETECTION
+#else
+
+#  if defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_AMD64))
+// MSVC 2005 or later supports __cpuid by intrin.h
+#    include <intrin.h>
+
+#    define HAVE_CPU_DETECTION
+#  elif defined(__SUNPRO_CC) && (defined(__i386) || defined(__x86_64__))
+
+// Define a function identical to MSVC function.
+#    ifdef __i386
+static void __cpuid(int CPUInfo[4], int InfoType) {
+  asm("xchg %esi, %ebx\n"
+      "cpuid\n"
+      "movl %eax, (%edi)\n"
+      "movl %ebx, 4(%edi)\n"
+      "movl %ecx, 8(%edi)\n"
+      "movl %edx, 12(%edi)\n"
+      "xchg %esi, %ebx\n"
+      :
+      : "a"(InfoType),  // %eax
+        "D"(CPUInfo)    // %edi
+      : "%ecx", "%edx", "%esi");
+}
+#    else
+static void __cpuid(int CPUInfo[4], int InfoType) {
+  asm("xchg %rsi, %rbx\n"
+      "cpuid\n"
+      "movl %eax, (%rdi)\n"
+      "movl %ebx, 4(%rdi)\n"
+      "movl %ecx, 8(%rdi)\n"
+      "movl %edx, 12(%rdi)\n"
+      "xchg %rsi, %rbx\n"
+      :
+      : "a"(InfoType),  // %eax
+        "D"(CPUInfo)    // %rdi
+      : "%ecx", "%edx", "%rsi");
+}
+
+#      define HAVE_CPU_DETECTION
+#    endif
+#  endif
+
+#  ifdef HAVE_CPU_DETECTION
+static inline bool HasCPUIDBit(unsigned int level, CPUIDRegister reg,
+                               unsigned int bit) {
+  // Check that the level in question is supported.
+  volatile int regs[4];
+  __cpuid((int*)regs, level & 0x80000000u);
+  if (unsigned(regs[0]) < level) return false;
+  __cpuid((int*)regs, level);
+  return !!(unsigned(regs[reg]) & bit);
+}
+#  endif
+#endif
+
+#ifdef MOZ_ENABLE_FREETYPE
+extern "C" {
+
+void mozilla_AddRefSharedFTFace(void* aContext) {
+  if (aContext) {
+    static_cast<mozilla::gfx::SharedFTFace*>(aContext)->AddRef();
+  }
+}
+
+void mozilla_ReleaseSharedFTFace(void* aContext, void* aOwner) {
+  if (aContext) {
+    auto* sharedFace = static_cast<mozilla::gfx::SharedFTFace*>(aContext);
+    sharedFace->ForgetLockOwner(aOwner);
+    sharedFace->Release();
+  }
+}
+
+void mozilla_ForgetSharedFTFaceLockOwner(void* aContext, void* aOwner) {
+  static_cast<mozilla::gfx::SharedFTFace*>(aContext)->ForgetLockOwner(aOwner);
+}
+
+int mozilla_LockSharedFTFace(void* aContext,
+                             void* aOwner) MOZ_NO_THREAD_SAFETY_ANALYSIS {
+  return int(static_cast<mozilla::gfx::SharedFTFace*>(aContext)->Lock(aOwner));
+}
+
+void mozilla_UnlockSharedFTFace(void* aContext) MOZ_NO_THREAD_SAFETY_ANALYSIS {
+  static_cast<mozilla::gfx::SharedFTFace*>(aContext)->Unlock();
+}
+
+FT_Error mozilla_LoadFTGlyph(FT_Face aFace, uint32_t aGlyphIndex,
+                             int32_t aFlags) {
+  return mozilla::gfx::Factory::LoadFTGlyph(aFace, aGlyphIndex, aFlags);
+}
+
+void mozilla_LockFTLibrary(FT_Library aFTLibrary) {
+  mozilla::gfx::Factory::LockFTLibrary(aFTLibrary);
+}
+
+void mozilla_UnlockFTLibrary(FT_Library aFTLibrary) {
+  mozilla::gfx::Factory::UnlockFTLibrary(aFTLibrary);
+}
+}
+#endif
+
+namespace mozilla::gfx {
+
+#ifdef MOZ_ENABLE_FREETYPE
+FT_Library Factory::mFTLibrary = nullptr;
+StaticMutex Factory::mFTLock;
+
+already_AddRefed<SharedFTFace> FTUserFontData::CloneFace(int aFaceIndex) {
+  if (mFontData) {
+    RefPtr<SharedFTFace> face = Factory::NewSharedFTFaceFromData(
+        nullptr, mFontData, mLength, aFaceIndex, this);
+    if (!face ||
+        (FT_Select_Charmap(face->GetFace(), FT_ENCODING_UNICODE) != FT_Err_Ok &&
+         FT_Select_Charmap(face->GetFace(), FT_ENCODING_MS_SYMBOL) !=
+             FT_Err_Ok)) {
+      return nullptr;
+    }
+    return face.forget();
+  }
+  FT_Face face = Factory::NewFTFace(nullptr, mFilename.c_str(), aFaceIndex);
+  if (face) {
+    return MakeAndAddRef<SharedFTFace>(face, this);
+  }
+  return nullptr;
+}
+#endif
+
+#ifdef WIN32
+// Note: mDeviceLock must be held when mutating these values.
+static uint32_t mDeviceSeq = 0;
+StaticRefPtr<ID3D11Device> Factory::mD3D11Device;
+StaticRefPtr<ID2D1Device> Factory::mD2D1Device;
+StaticRefPtr<IDWriteFactory> Factory::mDWriteFactory;
+StaticRefPtr<ID2D1DeviceContext> Factory::mMTDC;
+StaticRefPtr<ID2D1DeviceContext> Factory::mOffMTDC;
+bool Factory::mDWriteFactoryInitialized = false;
+StaticRefPtr<IDWriteFontCollection> Factory::mDWriteSystemFonts;
+StaticMutex Factory::mDeviceLock;
+StaticMutex Factory::mDTDependencyLock;
+#endif
+
+bool Factory::mBGRSubpixelOrder = false;
+
+mozilla::gfx::Config* Factory::sConfig = nullptr;
+
+void Factory::Init(const Config& aConfig) {
+  MOZ_ASSERT(!sConfig);
+  sConfig = new Config(aConfig);
+
+#ifdef XP_DARWIN
+  NativeFontResourceMac::RegisterMemoryReporter();
+#else
+  NativeFontResource::RegisterMemoryReporter();
+#endif
+}
+
+void Factory::ShutDown() {
+  if (sConfig) {
+    delete sConfig->mLogForwarder;
+    delete sConfig;
+    sConfig = nullptr;
+  }
+
+#ifdef MOZ_ENABLE_FREETYPE
+  mFTLibrary = nullptr;
+#endif
+}
+
+bool Factory::HasSSE2() {
+#if defined(__SSE2__) || defined(_M_X64) || \
+    (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
+  // gcc with -msse2 (default on OSX and x86-64)
+  // cl.exe with -arch:SSE2 (default on x64 compiler)
+  return true;
+#elif defined(HAVE_CPU_DETECTION)
+  static enum {
+    UNINITIALIZED,
+    NO_SSE2,
+    HAS_SSE2
+  } sDetectionState = UNINITIALIZED;
+
+  if (sDetectionState == UNINITIALIZED) {
+    sDetectionState = HasCPUIDBit(1u, edx, (1u << 26)) ? HAS_SSE2 : NO_SSE2;
+  }
+  return sDetectionState == HAS_SSE2;
+#else
+  return false;
+#endif
+}
+
+bool Factory::HasSSE4() {
+#if defined(__SSE4__)
+  // gcc with -msse2 (default on OSX and x86-64)
+  // cl.exe with -arch:SSE2 (default on x64 compiler)
+  return true;
+#elif defined(HAVE_CPU_DETECTION)
+  static enum {
+    UNINITIALIZED,
+    NO_SSE4,
+    HAS_SSE4
+  } sDetectionState = UNINITIALIZED;
+
+  if (sDetectionState == UNINITIALIZED) {
+    sDetectionState = HasCPUIDBit(1u, ecx, (1u << 19)) ? HAS_SSE4 : NO_SSE4;
+  }
+  return sDetectionState == HAS_SSE4;
+#else
+  return false;
+#endif
+}
+
+// If the size is "reasonable", we want gfxCriticalError to assert, so
+// this is the option set up for it.
+inline int LoggerOptionsBasedOnSize(const IntSize& aSize) {
+  return CriticalLog::DefaultOptions(Factory::ReasonableSurfaceSize(aSize));
+}
+
+bool Factory::ReasonableSurfaceSize(const IntSize& aSize) {
+  return Factory::CheckSurfaceSize(aSize, kReasonableSurfaceSize);
+}
+
+bool Factory::AllowedSurfaceSize(const IntSize& aSize) {
+  if (sConfig) {
+    return Factory::CheckSurfaceSize(aSize, sConfig->mMaxTextureSize,
+                                     sConfig->mMaxAllocSize);
+  }
+
+  return CheckSurfaceSize(aSize);
+}
+
+bool Factory::CheckSurfaceSize(const IntSize& sz, int32_t extentLimit,
+                               int32_t allocLimit) {
+  if (sz.width <= 0 || sz.height <= 0) {
+    return false;
+  }
+
+  // reject images with sides bigger than limit
+  if (extentLimit && (sz.width > extentLimit || sz.height > extentLimit)) {
+    gfxDebug() << "Surface size too large (exceeds extent limit)!";
+    return false;
+  }
+
+  // assuming 4 bytes per pixel, make sure the allocation size
+  // doesn't overflow a int32_t either
+  CheckedInt<int32_t> stride = GetAlignedStride<16>(sz.width, 4);
+  if (!stride.isValid() || stride.value() == 0) {
+    gfxDebug() << "Surface size too large (stride overflows int32_t)!";
+    return false;
+  }
+
+  CheckedInt<int32_t> numBytes = stride * sz.height;
+  if (!numBytes.isValid()) {
+    gfxDebug()
+        << "Surface size too large (allocation size would overflow int32_t)!";
+    return false;
+  }
+
+  if (allocLimit && allocLimit < numBytes.value()) {
+    gfxDebug() << "Surface size too large (exceeds allocation limit)!";
+    return false;
+  }
+
+  return true;
+}
+
+already_AddRefed<DrawTarget> Factory::CreateDrawTarget(BackendType aBackend,
+                                                       const IntSize& aSize,
+                                                       SurfaceFormat aFormat) {
+  if (!AllowedSurfaceSize(aSize)) {
+    gfxCriticalError(LoggerOptionsBasedOnSize(aSize))
+        << "Failed to allocate a surface due to invalid size (CDT) " << aSize;
+    return nullptr;
+  }
+
+  RefPtr<DrawTarget> retVal;
+  switch (aBackend) {
+#ifdef WIN32
+    case BackendType::DIRECT2D1_1: {
+      RefPtr<DrawTargetD2D1> newTarget;
+      newTarget = new DrawTargetD2D1();
+      if (newTarget->Init(aSize, aFormat)) {
+        retVal = newTarget;
+      }
+      break;
+    }
+#endif
+    case BackendType::SKIA: {
+      RefPtr<DrawTargetSkia> newTarget;
+      newTarget = new DrawTargetSkia();
+      if (newTarget->Init(aSize, aFormat)) {
+        retVal = newTarget;
+      }
+      break;
+    }
+#ifdef USE_CAIRO
+    case BackendType::CAIRO: {
+      RefPtr<DrawTargetCairo> newTarget;
+      newTarget = new DrawTargetCairo();
+      if (newTarget->Init(aSize, aFormat)) {
+        retVal = newTarget;
+      }
+      break;
+    }
+#endif
+    default:
+      return nullptr;
+  }
+
+  if (!retVal) {
+    // Failed
+    gfxCriticalError(LoggerOptionsBasedOnSize(aSize))
+        << "Failed to create DrawTarget, Type: " << int(aBackend)
+        << " Size: " << aSize;
+  }
+
+  return retVal.forget();
+}
+
+already_AddRefed<PathBuilder> Factory::CreatePathBuilder(BackendType aBackend,
+                                                         FillRule aFillRule) {
+  switch (aBackend) {
+#ifdef WIN32
+    case BackendType::DIRECT2D1_1:
+      return PathBuilderD2D::Create(aFillRule);
+#endif
+    case BackendType::SKIA:
+    case BackendType::WEBGL:
+      return PathBuilderSkia::Create(aFillRule);
+#ifdef USE_CAIRO
+    case BackendType::CAIRO:
+      return PathBuilderCairo::Create(aFillRule);
+#endif
+    default:
+      gfxCriticalNote << "Invalid PathBuilder type specified: "
+                      << (int)aBackend;
+      return nullptr;
+  }
+}
+
+already_AddRefed<PathBuilder> Factory::CreateSimplePathBuilder() {
+  return CreatePathBuilder(BackendType::SKIA);
+}
+
+already_AddRefed<DrawTarget> Factory::CreateRecordingDrawTarget(
+    DrawEventRecorder* aRecorder, DrawTarget* aDT, IntRect aRect) {
+  return MakeAndAddRef<DrawTargetRecording>(aRecorder, aDT, aRect);
+}
+
+already_AddRefed<DrawTarget> Factory::CreateDrawTargetForData(
+    BackendType aBackend, unsigned char* aData, const IntSize& aSize,
+    int32_t aStride, SurfaceFormat aFormat, bool aUninitialized) {
+  MOZ_ASSERT(aData);
+  if (!AllowedSurfaceSize(aSize)) {
+    gfxCriticalError(LoggerOptionsBasedOnSize(aSize))
+        << "Failed to allocate a surface due to invalid size (DTD) " << aSize;
+    return nullptr;
+  }
+
+  RefPtr<DrawTarget> retVal;
+
+  switch (aBackend) {
+    case BackendType::SKIA: {
+      RefPtr<DrawTargetSkia> newTarget;
+      newTarget = new DrawTargetSkia();
+      if (newTarget->Init(aData, aSize, aStride, aFormat, aUninitialized)) {
+        retVal = newTarget;
+      }
+      break;
+    }
+#ifdef USE_CAIRO
+    case BackendType::CAIRO: {
+      RefPtr<DrawTargetCairo> newTarget;
+      newTarget = new DrawTargetCairo();
+      if (newTarget->Init(aData, aSize, aStride, aFormat)) {
+        retVal = std::move(newTarget);
+      }
+      break;
+    }
+#endif
+    default:
+      gfxCriticalNote << "Invalid draw target type specified: "
+                      << (int)aBackend;
+      return nullptr;
+  }
+
+  if (!retVal) {
+    gfxCriticalNote << "Failed to create DrawTarget, Type: " << int(aBackend)
+                    << " Size: " << aSize << ", Data: " << hexa((void*)aData)
+                    << ", Stride: " << aStride;
+  }
+
+  return retVal.forget();
+}
+
+already_AddRefed<DrawTarget> Factory::CreateOffsetDrawTarget(
+    DrawTarget* aDrawTarget, IntPoint aTileOrigin) {
+  RefPtr<DrawTargetOffset> dt = new DrawTargetOffset();
+
+  if (!dt->Init(aDrawTarget, aTileOrigin)) {
+    return nullptr;
+  }
+
+  return dt.forget();
+}
+
+bool Factory::DoesBackendSupportDataDrawtarget(BackendType aType) {
+  switch (aType) {
+    case BackendType::DIRECT2D:
+    case BackendType::DIRECT2D1_1:
+    case BackendType::RECORDING:
+    case BackendType::NONE:
+    case BackendType::BACKEND_LAST:
+    case BackendType::WEBRENDER_TEXT:
+    case BackendType::WEBGL:
+      return false;
+    case BackendType::CAIRO:
+    case BackendType::SKIA:
+      return true;
+  }
+
+  return false;
+}
+
+uint32_t Factory::GetMaxSurfaceSize(BackendType aType) {
+  switch (aType) {
+    case BackendType::CAIRO:
+      return DrawTargetCairo::GetMaxSurfaceSize();
+    case BackendType::SKIA:
+      return DrawTargetSkia::GetMaxSurfaceSize();
+#ifdef WIN32
+    case BackendType::DIRECT2D1_1:
+      return DrawTargetD2D1::GetMaxSurfaceSize();
+#endif
+    default:
+      return 0;
+  }
+}
+
+already_AddRefed<NativeFontResource> Factory::CreateNativeFontResource(
+    uint8_t* aData, uint32_t aSize, FontType aFontType, void* aFontContext) {
+  switch (aFontType) {
+#ifdef WIN32
+    case FontType::DWRITE:
+      return NativeFontResourceDWrite::Create(aData, aSize);
+    case FontType::GDI:
+      return NativeFontResourceGDI::Create(aData, aSize);
+#elif defined(XP_DARWIN)
+    case FontType::MAC:
+      return NativeFontResourceMac::Create(aData, aSize);
+#elif defined(MOZ_WIDGET_GTK)
+    case FontType::FONTCONFIG:
+      return NativeFontResourceFontconfig::Create(
+          aData, aSize, static_cast<FT_Library>(aFontContext));
+#elif defined(MOZ_WIDGET_ANDROID)
+    case FontType::FREETYPE:
+      return NativeFontResourceFreeType::Create(
+          aData, aSize, static_cast<FT_Library>(aFontContext));
+#endif
+    default:
+      gfxWarning()
+          << "Unable to create requested font resource from truetype data";
+      return nullptr;
+  }
+}
+
+already_AddRefed<UnscaledFont> Factory::CreateUnscaledFontFromFontDescriptor(
+    FontType aType, const uint8_t* aData, uint32_t aDataLength,
+    uint32_t aIndex) {
+  switch (aType) {
+#ifdef WIN32
+    case FontType::DWRITE:
+      return UnscaledFontDWrite::CreateFromFontDescriptor(aData, aDataLength,
+                                                          aIndex);
+    case FontType::GDI:
+      return UnscaledFontGDI::CreateFromFontDescriptor(aData, aDataLength,
+                                                       aIndex);
+#elif defined(XP_DARWIN)
+    case FontType::MAC:
+      return UnscaledFontMac::CreateFromFontDescriptor(aData, aDataLength,
+                                                       aIndex);
+#elif defined(MOZ_WIDGET_GTK)
+    case FontType::FONTCONFIG:
+      return UnscaledFontFontconfig::CreateFromFontDescriptor(
+          aData, aDataLength, aIndex);
+#elif defined(MOZ_WIDGET_ANDROID)
+    case FontType::FREETYPE:
+      return UnscaledFontFreeType::CreateFromFontDescriptor(aData, aDataLength,
+                                                            aIndex);
+#endif
+    default:
+      gfxWarning() << "Invalid type specified for UnscaledFont font descriptor";
+      return nullptr;
+  }
+}
+
+#ifdef XP_DARWIN
+already_AddRefed<ScaledFont> Factory::CreateScaledFontForMacFont(
+    CGFontRef aCGFont, const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,
+    bool aUseFontSmoothing, bool aApplySyntheticBold, bool aHasColorGlyphs) {
+  return MakeAndAddRef<ScaledFontMac>(aCGFont, aUnscaledFont, aSize, false,
+                                      aUseFontSmoothing, aApplySyntheticBold,
+                                      aHasColorGlyphs);
+}
+#endif
+
+#ifdef MOZ_WIDGET_GTK
+already_AddRefed<ScaledFont> Factory::CreateScaledFontForFontconfigFont(
+    const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,
+    RefPtr<SharedFTFace> aFace, FcPattern* aPattern) {
+  return MakeAndAddRef<ScaledFontFontconfig>(std::move(aFace), aPattern,
+                                             aUnscaledFont, aSize);
+}
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+already_AddRefed<ScaledFont> Factory::CreateScaledFontForFreeTypeFont(
+    const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,
+    RefPtr<SharedFTFace> aFace, bool aApplySyntheticBold) {
+  return MakeAndAddRef<ScaledFontFreeType>(std::move(aFace), aUnscaledFont,
+                                           aSize, aApplySyntheticBold);
+}
+#endif
+
+void Factory::SetBGRSubpixelOrder(bool aBGR) { mBGRSubpixelOrder = aBGR; }
+
+bool Factory::GetBGRSubpixelOrder() { return mBGRSubpixelOrder; }
+
+#ifdef MOZ_ENABLE_FREETYPE
+SharedFTFace::SharedFTFace(FT_Face aFace, SharedFTFaceData* aData)
+    : mFace(aFace),
+      mData(aData),
+      mLock("SharedFTFace::mLock"),
+      mLastLockOwner(nullptr) {
+  if (mData) {
+    mData->BindData();
+  }
+}
+
+SharedFTFace::~SharedFTFace() {
+  Factory::ReleaseFTFace(mFace);
+  if (mData) {
+    mData->ReleaseData();
+  }
+}
+
+void Factory::SetFTLibrary(FT_Library aFTLibrary) { mFTLibrary = aFTLibrary; }
+
+FT_Library Factory::GetFTLibrary() {
+  MOZ_ASSERT(mFTLibrary);
+  return mFTLibrary;
+}
+
+FT_Library Factory::NewFTLibrary() {
+  FT_Library library;
+  if (FT_Init_FreeType(&library) != FT_Err_Ok) {
+    return nullptr;
+  }
+  return library;
+}
+
+void Factory::ReleaseFTLibrary(FT_Library aFTLibrary) {
+  FT_Done_FreeType(aFTLibrary);
+}
+
+void Factory::LockFTLibrary(FT_Library aFTLibrary)
+    MOZ_CAPABILITY_ACQUIRE(mFTLock) MOZ_NO_THREAD_SAFETY_ANALYSIS {
+  mFTLock.Lock();
+}
+
+void Factory::UnlockFTLibrary(FT_Library aFTLibrary)
+    MOZ_CAPABILITY_RELEASE(mFTLock) MOZ_NO_THREAD_SAFETY_ANALYSIS {
+  mFTLock.Unlock();
+}
+
+FT_Face Factory::NewFTFace(FT_Library aFTLibrary, const char* aFileName,
+                           int aFaceIndex) {
+  StaticMutexAutoLock lock(mFTLock);
+  if (!aFTLibrary) {
+    aFTLibrary = mFTLibrary;
+  }
+  FT_Face face;
+  if (FT_New_Face(aFTLibrary, aFileName, aFaceIndex, &face) != FT_Err_Ok) {
+    return nullptr;
+  }
+  return face;
+}
+
+already_AddRefed<SharedFTFace> Factory::NewSharedFTFace(FT_Library aFTLibrary,
+                                                        const char* aFilename,
+                                                        int aFaceIndex) {
+  FT_Face face = NewFTFace(aFTLibrary, aFilename, aFaceIndex);
+  if (!face) {
+    return nullptr;
+  }
+
+  RefPtr<FTUserFontData> data;
+#  ifdef ANDROID
+  // If the font has variations, we may later need to "clone" it in
+  // UnscaledFontFreeType::CreateScaledFont. To support this, we attach an
+  // FTUserFontData that records the filename used to instantiate the face.
+  if (face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS) {
+    data = new FTUserFontData(aFilename);
+  }
+#  endif
+  return MakeAndAddRef<SharedFTFace>(face, data);
+}
+
+FT_Face Factory::NewFTFaceFromData(FT_Library aFTLibrary, const uint8_t* aData,
+                                   size_t aDataSize, int aFaceIndex) {
+  StaticMutexAutoLock lock(mFTLock);
+  if (!aFTLibrary) {
+    aFTLibrary = mFTLibrary;
+  }
+  FT_Face face;
+  if (FT_New_Memory_Face(aFTLibrary, aData, aDataSize, aFaceIndex, &face) !=
+      FT_Err_Ok) {
+    return nullptr;
+  }
+  return face;
+}
+
+already_AddRefed<SharedFTFace> Factory::NewSharedFTFaceFromData(
+    FT_Library aFTLibrary, const uint8_t* aData, size_t aDataSize,
+    int aFaceIndex, SharedFTFaceData* aSharedData) {
+  if (FT_Face face =
+          NewFTFaceFromData(aFTLibrary, aData, aDataSize, aFaceIndex)) {
+    return MakeAndAddRef<SharedFTFace>(face, aSharedData);
+  } else {
+    return nullptr;
+  }
+}
+
+void Factory::ReleaseFTFace(FT_Face aFace) {
+  StaticMutexAutoLock lock(mFTLock);
+  FT_Done_Face(aFace);
+}
+
+FT_Error Factory::LoadFTGlyph(FT_Face aFace, uint32_t aGlyphIndex,
+                              int32_t aFlags) {
+  StaticMutexAutoLock lock(mFTLock);
+  return FT_Load_Glyph(aFace, aGlyphIndex, aFlags);
+}
+#endif
+
+AutoSerializeWithMoz2D::AutoSerializeWithMoz2D(BackendType aBackendType) {
+#ifdef WIN32
+  // We use a multi-threaded ID2D1Factory1, so that makes the calls through the
+  // Direct2D API thread-safe. However, if the Moz2D objects are using Direct3D
+  // resources we need to make sure that calls through the Direct3D or DXGI API
+  // use the Direct2D synchronization. It's possible that this should be pushed
+  // down into the TextureD3D11 objects, so that we always use this.
+  if (aBackendType == BackendType::DIRECT2D1_1 ||
+      aBackendType == BackendType::DIRECT2D) {
+    auto factory = D2DFactory();
+    if (factory) {
+      factory->QueryInterface(
+          static_cast<ID2D1Multithread**>(getter_AddRefs(mMT)));
+      if (mMT) {
+        mMT->Enter();
+      }
+    }
+  }
+#endif
+}
+
+AutoSerializeWithMoz2D::~AutoSerializeWithMoz2D() {
+#ifdef WIN32
+  if (mMT) {
+    mMT->Leave();
+  }
+#endif
+};
+
+#ifdef WIN32
+already_AddRefed<DrawTarget> Factory::CreateDrawTargetForD3D11Texture(
+    ID3D11Texture2D* aTexture, SurfaceFormat aFormat) {
+  MOZ_ASSERT(aTexture);
+
+  RefPtr<DrawTargetD2D1> newTarget;
+
+  newTarget = new DrawTargetD2D1();
+  if (newTarget->Init(aTexture, aFormat)) {
+    RefPtr<DrawTarget> retVal = newTarget;
+    return retVal.forget();
+  }
+
+  gfxWarning() << "Failed to create draw target for D3D11 texture.";
+
+  // Failed
+  return nullptr;
+}
+
+bool Factory::SetDirect3D11Device(ID3D11Device* aDevice) {
+  MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+  // D2DFactory already takes the device lock, so we get the factory before
+  // entering the lock scope.
+  RefPtr<ID2D1Factory1> factory = D2DFactory();
+
+  StaticMutexAutoLock lock(mDeviceLock);
+
+  mD3D11Device = aDevice;
+
+  if (mD2D1Device) {
+    mD2D1Device = nullptr;
+    mMTDC = nullptr;
+    mOffMTDC = nullptr;
+  }
+
+  if (!aDevice) {
+    return true;
+  }
+
+  RefPtr<IDXGIDevice> device;
+  aDevice->QueryInterface((IDXGIDevice**)getter_AddRefs(device));
+
+  RefPtr<ID2D1Device> d2dDevice;
+  HRESULT hr = factory->CreateDevice(device, getter_AddRefs(d2dDevice));
+  if (FAILED(hr)) {
+    gfxCriticalError()
+        << "[D2D1] Failed to create gfx factory's D2D1 device, code: "
+        << hexa(hr);
+
+    mD3D11Device = nullptr;
+    return false;
+  }
+
+  mDeviceSeq++;
+  mD2D1Device = d2dDevice;
+  return true;
+}
+
+RefPtr<ID3D11Device> Factory::GetDirect3D11Device() {
+  StaticMutexAutoLock lock(mDeviceLock);
+  return mD3D11Device;
+}
+
+RefPtr<ID2D1Device> Factory::GetD2D1Device(uint32_t* aOutSeqNo) {
+  StaticMutexAutoLock lock(mDeviceLock);
+  if (aOutSeqNo) {
+    *aOutSeqNo = mDeviceSeq;
+  }
+  return mD2D1Device.get();
+}
+
+bool Factory::HasD2D1Device() { return !!GetD2D1Device(); }
+
+RefPtr<IDWriteFactory> Factory::GetDWriteFactory() {
+  StaticMutexAutoLock lock(mDeviceLock);
+  return mDWriteFactory;
+}
+
+RefPtr<IDWriteFactory> Factory::EnsureDWriteFactory() {
+  StaticMutexAutoLock lock(mDeviceLock);
+
+  if (mDWriteFactoryInitialized) {
+    return mDWriteFactory;
+  }
+
+  mDWriteFactoryInitialized = true;
+
+  HMODULE dwriteModule = LoadLibrarySystem32(L"dwrite.dll");
+  decltype(DWriteCreateFactory)* createDWriteFactory =
+      (decltype(DWriteCreateFactory)*)GetProcAddress(dwriteModule,
+                                                     "DWriteCreateFactory");
+
+  if (!createDWriteFactory) {
+    gfxWarning() << "Failed to locate DWriteCreateFactory function.";
+    return nullptr;
+  }
+
+  HRESULT hr =
+      createDWriteFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory),
+                          reinterpret_cast<IUnknown**>(&mDWriteFactory));
+
+  if (FAILED(hr)) {
+    gfxWarning() << "Failed to create DWrite Factory.";
+  }
+
+  return mDWriteFactory;
+}
+
+RefPtr<IDWriteFontCollection> Factory::GetDWriteSystemFonts(bool aUpdate) {
+  StaticMutexAutoLock lock(mDeviceLock);
+
+  if (mDWriteSystemFonts && !aUpdate) {
+    return mDWriteSystemFonts;
+  }
+
+  if (!mDWriteFactory) {
+    if ((rand() & 0x3f) == 0) {
+      gfxCriticalError(int(gfx::LogOptions::AssertOnCall))
+          << "Failed to create DWrite factory";
+    } else {
+      gfxWarning() << "Failed to create DWrite factory";
+    }
+
+    return nullptr;
+  }
+
+  RefPtr<IDWriteFontCollection> systemFonts;
+  HRESULT hr =
+      mDWriteFactory->GetSystemFontCollection(getter_AddRefs(systemFonts));
+  if (FAILED(hr) || !systemFonts) {
+    // only crash some of the time so those experiencing this problem
+    // don't stop using Firefox
+    if ((rand() & 0x3f) == 0) {
+      gfxCriticalError(int(gfx::LogOptions::AssertOnCall))
+          << "Failed to create DWrite system font collection";
+    } else {
+      gfxWarning() << "Failed to create DWrite system font collection";
+    }
+    return nullptr;
+  }
+  mDWriteSystemFonts = systemFonts;
+
+  return mDWriteSystemFonts;
+}
+
+RefPtr<ID2D1DeviceContext> Factory::GetD2DDeviceContext() {
+  StaticRefPtr<ID2D1DeviceContext>* ptr;
+
+  if (NS_IsMainThread()) {
+    ptr = &mMTDC;
+  } else {
+    ptr = &mOffMTDC;
+  }
+
+  if (*ptr) {
+    return *ptr;
+  }
+
+  RefPtr<ID2D1Device> device = GetD2D1Device();
+
+  if (!device) {
+    return nullptr;
+  }
+
+  RefPtr<ID2D1DeviceContext> dc;
+  HRESULT hr = device->CreateDeviceContext(
+      D2D1_DEVICE_CONTEXT_OPTIONS_ENABLE_MULTITHREADED_OPTIMIZATIONS,
+      getter_AddRefs(dc));
+
+  if (FAILED(hr)) {
+    gfxCriticalError() << "Failed to create global device context";
+    return nullptr;
+  }
+
+  *ptr = dc;
+
+  return *ptr;
+}
+
+bool Factory::SupportsD2D1() { return !!D2DFactory(); }
+
+BYTE sSystemTextQuality = CLEARTYPE_QUALITY;
+void Factory::SetSystemTextQuality(uint8_t aQuality) {
+  sSystemTextQuality = aQuality;
+}
+
+uint64_t Factory::GetD2DVRAMUsageDrawTarget() {
+  return DrawTargetD2D1::mVRAMUsageDT;
+}
+
+uint64_t Factory::GetD2DVRAMUsageSourceSurface() {
+  return DrawTargetD2D1::mVRAMUsageSS;
+}
+
+void Factory::D2DCleanup() {
+  StaticMutexAutoLock lock(mDeviceLock);
+  if (mD2D1Device) {
+    mD2D1Device = nullptr;
+  }
+  DrawTargetD2D1::CleanupD2D();
+}
+
+already_AddRefed<ScaledFont> Factory::CreateScaledFontForDWriteFont(
+    IDWriteFontFace* aFontFace, const gfxFontStyle* aStyle,
+    const RefPtr<UnscaledFont>& aUnscaledFont, float aSize,
+    bool aUseEmbeddedBitmap, bool aUseMultistrikeBold, bool aGDIForced) {
+  return MakeAndAddRef<ScaledFontDWrite>(
+      aFontFace, aUnscaledFont, aSize, aUseEmbeddedBitmap, aUseMultistrikeBold,
+      aGDIForced, aStyle);
+}
+
+already_AddRefed<ScaledFont> Factory::CreateScaledFontForGDIFont(
+    const void* aLogFont, const RefPtr<UnscaledFont>& aUnscaledFont,
+    Float aSize) {
+  return MakeAndAddRef<ScaledFontWin>(static_cast<const LOGFONT*>(aLogFont),
+                                      aUnscaledFont, aSize);
+}
+#endif  // WIN32
+
+already_AddRefed<DrawTarget> Factory::CreateDrawTargetWithSkCanvas(
+    SkCanvas* aCanvas) {
+  RefPtr<DrawTargetSkia> newTarget = new DrawTargetSkia();
+  if (!newTarget->Init(aCanvas)) {
+    return nullptr;
+  }
+  return newTarget.forget();
+}
+
+void Factory::PurgeAllCaches() {}
+
+already_AddRefed<DrawTarget> Factory::CreateDrawTargetForCairoSurface(
+    cairo_surface_t* aSurface, const IntSize& aSize, SurfaceFormat* aFormat) {
+  if (!AllowedSurfaceSize(aSize)) {
+    gfxWarning() << "Allowing surface with invalid size (Cairo) " << aSize;
+  }
+
+  RefPtr<DrawTarget> retVal;
+
+#ifdef USE_CAIRO
+  RefPtr<DrawTargetCairo> newTarget = new DrawTargetCairo();
+
+  if (newTarget->Init(aSurface, aSize, aFormat)) {
+    retVal = newTarget;
+  }
+#endif
+  return retVal.forget();
+}
+
+already_AddRefed<SourceSurface> Factory::CreateSourceSurfaceForCairoSurface(
+    cairo_surface_t* aSurface, const IntSize& aSize, SurfaceFormat aFormat) {
+  if (aSize.width <= 0 || aSize.height <= 0) {
+    gfxWarning() << "Can't create a SourceSurface without a valid size";
+    return nullptr;
+  }
+
+#ifdef USE_CAIRO
+  return MakeAndAddRef<SourceSurfaceCairo>(aSurface, aSize, aFormat);
+#else
+  return nullptr;
+#endif
+}
+
+already_AddRefed<DataSourceSurface> Factory::CreateWrappingDataSourceSurface(
+    uint8_t* aData, int32_t aStride, const IntSize& aSize,
+    SurfaceFormat aFormat,
+    SourceSurfaceDeallocator aDeallocator /* = nullptr */,
+    void* aClosure /* = nullptr */) {
+  // Just check for negative/zero size instead of the full AllowedSurfaceSize()
+  // - since the data is already allocated we do not need to check for a
+  // possible overflow - it already worked.
+  if (aSize.width <= 0 || aSize.height <= 0) {
+    return nullptr;
+  }
+  if (!aDeallocator && aClosure) {
+    return nullptr;
+  }
+
+  MOZ_ASSERT(aData);
+
+  RefPtr<SourceSurfaceRawData> newSurf = new SourceSurfaceRawData();
+  newSurf->InitWrappingData(aData, aSize, aStride, aFormat, aDeallocator,
+                            aClosure);
+
+  return newSurf.forget();
+}
+
+already_AddRefed<DataSourceSurface> Factory::CreateDataSourceSurface(
+    const IntSize& aSize, SurfaceFormat aFormat, bool aZero) {
+  if (!AllowedSurfaceSize(aSize)) {
+    gfxCriticalError(LoggerOptionsBasedOnSize(aSize))
+        << "Failed to allocate a surface due to invalid size (DSS) " << aSize;
+    return nullptr;
+  }
+
+  // Skia doesn't support RGBX, so memset RGBX to 0xFF
+  bool clearSurface = aZero || aFormat == SurfaceFormat::B8G8R8X8;
+  uint8_t clearValue = aFormat == SurfaceFormat::B8G8R8X8 ? 0xFF : 0;
+
+  RefPtr<SourceSurfaceAlignedRawData> newSurf =
+      new SourceSurfaceAlignedRawData();
+  if (newSurf->Init(aSize, aFormat, clearSurface, clearValue)) {
+    return newSurf.forget();
+  }
+
+  gfxWarning() << "CreateDataSourceSurface failed in init";
+  return nullptr;
+}
+
+already_AddRefed<DataSourceSurface> Factory::CreateDataSourceSurfaceWithStride(
+    const IntSize& aSize, SurfaceFormat aFormat, int32_t aStride, bool aZero) {
+  if (!AllowedSurfaceSize(aSize) ||
+      aStride < aSize.width * BytesPerPixel(aFormat)) {
+    gfxCriticalError(LoggerOptionsBasedOnSize(aSize))
+        << "CreateDataSourceSurfaceWithStride failed with bad stride "
+        << aStride << ", " << aSize << ", " << aFormat;
+    return nullptr;
+  }
+
+  // Skia doesn't support RGBX, so memset RGBX to 0xFF
+  bool clearSurface = aZero || aFormat == SurfaceFormat::B8G8R8X8;
+  uint8_t clearValue = aFormat == SurfaceFormat::B8G8R8X8 ? 0xFF : 0;
+
+  RefPtr<SourceSurfaceAlignedRawData> newSurf =
+      new SourceSurfaceAlignedRawData();
+  if (newSurf->Init(aSize, aFormat, clearSurface, clearValue, aStride)) {
+    return newSurf.forget();
+  }
+
+  gfxCriticalError(LoggerOptionsBasedOnSize(aSize))
+      << "CreateDataSourceSurfaceWithStride failed to initialize " << aSize
+      << ", " << aFormat << ", " << aStride << ", " << aZero;
+  return nullptr;
+}
+
+void Factory::CopyDataSourceSurface(DataSourceSurface* aSource,
+                                    DataSourceSurface* aDest) {
+  // Don't worry too much about speed.
+  MOZ_ASSERT(aSource->GetSize() == aDest->GetSize());
+  MOZ_ASSERT(aSource->GetFormat() == SurfaceFormat::R8G8B8A8 ||
+             aSource->GetFormat() == SurfaceFormat::R8G8B8X8 ||
+             aSource->GetFormat() == SurfaceFormat::B8G8R8A8 ||
+             aSource->GetFormat() == SurfaceFormat::B8G8R8X8);
+  MOZ_ASSERT(aDest->GetFormat() == SurfaceFormat::R8G8B8A8 ||
+             aDest->GetFormat() == SurfaceFormat::R8G8B8X8 ||
+             aDest->GetFormat() == SurfaceFormat::B8G8R8A8 ||
+             aDest->GetFormat() == SurfaceFormat::B8G8R8X8 ||
+             aDest->GetFormat() == SurfaceFormat::R5G6B5_UINT16);
+
+  DataSourceSurface::MappedSurface srcMap;
+  DataSourceSurface::MappedSurface destMap;
+  if (!aSource->Map(DataSourceSurface::MapType::READ, &srcMap) ||
+      !aDest->Map(DataSourceSurface::MapType::WRITE, &destMap)) {
+    MOZ_ASSERT(false, "CopyDataSourceSurface: Failed to map surface.");
+    return;
+  }
+
+  SwizzleData(srcMap.mData, srcMap.mStride, aSource->GetFormat(), destMap.mData,
+              destMap.mStride, aDest->GetFormat(), aSource->GetSize());
+
+  aSource->Unmap();
+  aDest->Unmap();
+}
+
+#ifdef WIN32
+
+/* static */
+already_AddRefed<DataSourceSurface>
+Factory::CreateBGRA8DataSourceSurfaceForD3D11Texture(
+    ID3D11Texture2D* aSrcTexture, uint32_t aArrayIndex) {
+  D3D11_TEXTURE2D_DESC srcDesc = {0};
+  aSrcTexture->GetDesc(&srcDesc);
+
+  RefPtr<gfx::DataSourceSurface> destTexture =
+      gfx::Factory::CreateDataSourceSurface(
+          IntSize(srcDesc.Width, srcDesc.Height), gfx::SurfaceFormat::B8G8R8A8);
+  if (NS_WARN_IF(!destTexture)) {
+    return nullptr;
+  }
+  if (!ReadbackTexture(destTexture, aSrcTexture, aArrayIndex)) {
+    return nullptr;
+  }
+  return destTexture.forget();
+}
+
+/* static */ nsresult Factory::CreateSdbForD3D11Texture(
+    ID3D11Texture2D* aSrcTexture, const IntSize& aSrcSize,
+    layers::SurfaceDescriptorBuffer& aSdBuffer,
+    const std::function<layers::MemoryOrShmem(uint32_t)>& aAllocate) {
+  D3D11_TEXTURE2D_DESC srcDesc = {0};
+  aSrcTexture->GetDesc(&srcDesc);
+  if (srcDesc.Width != uint32_t(aSrcSize.width) ||
+      srcDesc.Height != uint32_t(aSrcSize.height) ||
+      srcDesc.Format != DXGI_FORMAT_B8G8R8A8_UNORM) {
+    return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
+  const auto format = gfx::SurfaceFormat::B8G8R8A8;
+  uint8_t* buffer = nullptr;
+  int32_t stride = 0;
+  nsresult rv = layers::Image::AllocateSurfaceDescriptorBufferRgb(
+      aSrcSize, format, buffer, aSdBuffer, stride, aAllocate);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (!ReadbackTexture(buffer, stride, aSrcTexture)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+/* static */
+template <typename DestTextureT>
+bool Factory::ConvertSourceAndRetryReadback(DestTextureT* aDestCpuTexture,
+                                            ID3D11Texture2D* aSrcTexture,
+                                            uint32_t aArrayIndex) {
+  RefPtr<ID3D11Device> device;
+  aSrcTexture->GetDevice(getter_AddRefs(device));
+  if (!device) {
+    gfxWarning() << "Failed to get D3D11 device from source texture";
+    return false;
+  }
+
+  nsAutoCString error;
+  std::unique_ptr<DXVA2Manager> manager(
+      DXVA2Manager::CreateD3D11DXVA(nullptr, error, device));
+  if (!manager) {
+    gfxWarning() << "Failed to create DXVA2 manager!";
+    return false;
+  }
+
+  RefPtr<ID3D11Texture2D> newSrcTexture;
+  HRESULT hr = manager->CopyToBGRATexture(aSrcTexture, aArrayIndex,
+                                          getter_AddRefs(newSrcTexture));
+  if (FAILED(hr)) {
+    gfxWarning() << "Failed to copy to BGRA texture.";
+    return false;
+  }
+
+  return ReadbackTexture(aDestCpuTexture, newSrcTexture);
+}
+
+/* static */
+bool Factory::ReadbackTexture(layers::TextureData* aDestCpuTexture,
+                              ID3D11Texture2D* aSrcTexture) {
+  layers::MappedTextureData mappedData;
+  if (!aDestCpuTexture->BorrowMappedData(mappedData)) {
+    gfxWarning() << "Could not access in-memory texture";
+    return false;
+  }
+
+  D3D11_TEXTURE2D_DESC srcDesc = {0};
+  aSrcTexture->GetDesc(&srcDesc);
+
+  // Special case: If the source and destination have different formats and the
+  // destination is B8G8R8A8 then convert the source to B8G8R8A8 and readback.
+  if ((srcDesc.Format != DXGIFormat(mappedData.format)) &&
+      (mappedData.format == SurfaceFormat::B8G8R8A8)) {
+    return ConvertSourceAndRetryReadback(aDestCpuTexture, aSrcTexture);
+  }
+
+  if ((IntSize(srcDesc.Width, srcDesc.Height) != mappedData.size) ||
+      (srcDesc.Format != DXGIFormat(mappedData.format))) {
+    gfxWarning() << "Attempted readback between incompatible textures";
+    return false;
+  }
+
+  return ReadbackTexture(mappedData.data, mappedData.stride, aSrcTexture);
+}
+
+/* static */
+bool Factory::ReadbackTexture(DataSourceSurface* aDestCpuTexture,
+                              ID3D11Texture2D* aSrcTexture,
+                              uint32_t aArrayIndex) {
+  D3D11_TEXTURE2D_DESC srcDesc = {0};
+  aSrcTexture->GetDesc(&srcDesc);
+
+  // Special case: If the source and destination have different formats and the
+  // destination is B8G8R8A8 then convert the source to B8G8R8A8 and readback.
+  if ((srcDesc.Format != DXGIFormat(aDestCpuTexture->GetFormat())) &&
+      (aDestCpuTexture->GetFormat() == SurfaceFormat::B8G8R8A8)) {
+    return ConvertSourceAndRetryReadback(aDestCpuTexture, aSrcTexture,
+                                         aArrayIndex);
+  }
+
+  if ((IntSize(srcDesc.Width, srcDesc.Height) != aDestCpuTexture->GetSize()) ||
+      (srcDesc.Format != DXGIFormat(aDestCpuTexture->GetFormat()))) {
+    gfxWarning() << "Attempted readback between incompatible textures";
+    return false;
+  }
+
+  gfx::DataSourceSurface::MappedSurface mappedSurface;
+  if (!aDestCpuTexture->Map(gfx::DataSourceSurface::WRITE, &mappedSurface)) {
+    return false;
+  }
+
+  MOZ_ASSERT(aArrayIndex == 0);
+
+  bool ret =
+      ReadbackTexture(mappedSurface.mData, mappedSurface.mStride, aSrcTexture);
+  aDestCpuTexture->Unmap();
+  return ret;
+}
+
+/* static */
+bool Factory::ReadbackTexture(uint8_t* aDestData, int32_t aDestStride,
+                              ID3D11Texture2D* aSrcTexture) {
+  MOZ_ASSERT(aDestData && aDestStride && aSrcTexture);
+
+  RefPtr<ID3D11Device> device;
+  aSrcTexture->GetDevice(getter_AddRefs(device));
+  if (!device) {
+    gfxWarning() << "Failed to get D3D11 device from source texture";
+    return false;
+  }
+
+  RefPtr<ID3D11DeviceContext> context;
+  device->GetImmediateContext(getter_AddRefs(context));
+  if (!context) {
+    gfxWarning() << "Could not get an immediate D3D11 context";
+    return false;
+  }
+
+  RefPtr<IDXGIKeyedMutex> mutex;
+  HRESULT hr = aSrcTexture->QueryInterface(__uuidof(IDXGIKeyedMutex),
+                                           (void**)getter_AddRefs(mutex));
+  if (SUCCEEDED(hr) && mutex) {
+    hr = mutex->AcquireSync(0, 2000);
+    if (hr != S_OK) {
+      gfxWarning() << "Could not acquire DXGI surface lock in 2 seconds";
+      return false;
+    }
+  }
+
+  D3D11_TEXTURE2D_DESC srcDesc = {0};
+  aSrcTexture->GetDesc(&srcDesc);
+  srcDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
+  srcDesc.Usage = D3D11_USAGE_STAGING;
+  srcDesc.BindFlags = 0;
+  srcDesc.MiscFlags = 0;
+  srcDesc.MipLevels = 1;
+  RefPtr<ID3D11Texture2D> srcCpuTexture;
+  hr =
+      device->CreateTexture2D(&srcDesc, nullptr, getter_AddRefs(srcCpuTexture));
+  if (FAILED(hr)) {
+    gfxWarning() << "Could not create source texture for mapping";
+    if (mutex) {
+      mutex->ReleaseSync(0);
+    }
+    return false;
+  }
+
+  context->CopyResource(srcCpuTexture, aSrcTexture);
+
+  if (mutex) {
+    mutex->ReleaseSync(0);
+    mutex = nullptr;
+  }
+
+  D3D11_MAPPED_SUBRESOURCE srcMap;
+  hr = context->Map(srcCpuTexture, 0, D3D11_MAP_READ, 0, &srcMap);
+  if (FAILED(hr)) {
+    gfxWarning() << "Could not map source texture";
+    return false;
+  }
+
+  uint32_t width = srcDesc.Width;
+  uint32_t height = srcDesc.Height;
+  int bpp = BytesPerPixel(gfx::ToPixelFormat(srcDesc.Format));
+  for (uint32_t y = 0; y < height; y++) {
+    memcpy(aDestData + aDestStride * y,
+           (unsigned char*)(srcMap.pData) + srcMap.RowPitch * y, width * bpp);
+  }
+
+  context->Unmap(srcCpuTexture, 0);
+  return true;
+}
+
+#endif  // WIN32
+
+// static
+void CriticalLogger::OutputMessage(const std::string& aString, int aLevel,
+                                   bool aNoNewline) {
+  if (Factory::GetLogForwarder()) {
+    Factory::GetLogForwarder()->Log(aString);
+  }
+
+  BasicLogger::OutputMessage(aString, aLevel, aNoNewline);
+}
+
+void CriticalLogger::CrashAction(LogReason aReason) {
+  if (Factory::GetLogForwarder()) {
+    Factory::GetLogForwarder()->CrashAction(aReason);
+  }
+}
+
+#ifdef WIN32
+void LogWStr(const wchar_t* aWStr, std::stringstream& aOut) {
+  int n =
+      WideCharToMultiByte(CP_ACP, 0, aWStr, -1, nullptr, 0, nullptr, nullptr);
+  if (n > 1) {
+    std::vector<char> str(n);
+    WideCharToMultiByte(CP_ACP, 0, aWStr, -1, str.data(), n, nullptr, nullptr);
+    aOut << str.data();
+  }
+}
+#endif
+
+}  // namespace mozilla::gfx