diff -r 000000000000 -r 6474c204b198 gfx/layers/d3d9/DeviceManagerD3D9.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/layers/d3d9/DeviceManagerD3D9.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,953 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * 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 "DeviceManagerD3D9.h"
+#include "LayerManagerD3D9Shaders.h"
+#include "ThebesLayerD3D9.h"
+#include "nsIServiceManager.h"
+#include "nsIConsoleService.h"
+#include "nsPrintfCString.h"
+#include "Nv3DVUtils.h"
+#include "plstr.h"
+#include <algorithm>
+#include "gfx2DGlue.h"
+#include "gfxPlatform.h"
+#include "gfxWindowsPlatform.h"
+#include "TextureD3D9.h"
+#include "mozilla/gfx/Point.h"
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace layers {
+
+const LPCWSTR kClassName       = L"D3D9WindowClass";
+
+#define USE_D3D9EX
+
+struct vertex {
+  float x, y;
+};
+
+SwapChainD3D9::SwapChainD3D9(DeviceManagerD3D9 *aDeviceManager)
+  : mDeviceManager(aDeviceManager)
+  , mWnd(0)
+{
+  mDeviceManager->mSwapChains.AppendElement(this);
+}
+
+SwapChainD3D9::~SwapChainD3D9()
+{
+  mDeviceManager->mSwapChains.RemoveElement(this);
+}
+
+bool
+SwapChainD3D9::Init(HWND hWnd)
+{
+  RECT r;
+  ::GetClientRect(hWnd, &r);
+
+  mWnd = hWnd;
+
+  D3DPRESENT_PARAMETERS pp;
+  memset(&pp, 0, sizeof(D3DPRESENT_PARAMETERS));
+
+  pp.BackBufferFormat = D3DFMT_A8R8G8B8;
+  pp.SwapEffect = D3DSWAPEFFECT_COPY;
+  pp.Windowed = TRUE;
+  pp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
+  pp.hDeviceWindow = mWnd;
+  if (r.left == r.right || r.top == r.bottom) {
+    pp.BackBufferHeight = 1;
+    pp.BackBufferWidth = 1;
+  }
+
+  HRESULT hr = mDeviceManager->device()->
+    CreateAdditionalSwapChain(&pp,
+                              getter_AddRefs(mSwapChain));
+
+  if (FAILED(hr)) {
+    NS_WARNING("Failed to create swap chain for window.");
+    return false;
+  }
+
+  return true;
+}
+
+already_AddRefed<IDirect3DSurface9>
+SwapChainD3D9::GetBackBuffer()
+{
+  nsRefPtr<IDirect3DSurface9> backBuffer;
+    mSwapChain->GetBackBuffer(0,
+                              D3DBACKBUFFER_TYPE_MONO,
+                              getter_AddRefs(backBuffer));
+  return backBuffer.forget();
+}
+
+DeviceManagerState
+SwapChainD3D9::PrepareForRendering()
+{
+  RECT r;
+  if (!::GetClientRect(mWnd, &r)) {
+    return DeviceFail;
+  }
+
+  DeviceManagerState deviceState = mDeviceManager->VerifyReadyForRendering();
+  if (deviceState != DeviceOK) {
+    return deviceState;
+  }
+
+  if (!mSwapChain) {
+    Init(mWnd);
+  }
+
+  if (mSwapChain) {
+    nsRefPtr<IDirect3DSurface9> backBuffer = GetBackBuffer();
+
+    D3DSURFACE_DESC desc;
+    backBuffer->GetDesc(&desc);
+
+    if (desc.Width == r.right - r.left && desc.Height == r.bottom - r.top) {
+      mDeviceManager->device()->SetRenderTarget(0, backBuffer);
+      return DeviceOK;
+    }
+
+    mSwapChain = nullptr;
+    
+    Init(mWnd);
+    
+    if (!mSwapChain) {
+      return DeviceFail;
+    }
+    
+    backBuffer = GetBackBuffer();
+    mDeviceManager->device()->SetRenderTarget(0, backBuffer);
+    
+    return DeviceOK;
+  }
+
+  return DeviceFail;
+}
+
+void
+SwapChainD3D9::Present(const nsIntRect &aRect)
+{
+  RECT r;
+  r.left = aRect.x;
+  r.top = aRect.y;
+  r.right = aRect.XMost();
+  r.bottom = aRect.YMost();
+
+  mSwapChain->Present(&r, &r, 0, 0, 0);
+}
+
+void
+SwapChainD3D9::Present()
+{
+  mSwapChain->Present(nullptr, nullptr, 0, 0, 0);
+}
+
+void
+SwapChainD3D9::Reset()
+{
+  mSwapChain = nullptr;
+}
+
+#define HAS_CAP(a, b) (((a) & (b)) == (b))
+#define LACKS_CAP(a, b) !(((a) & (b)) == (b))
+
+uint32_t DeviceManagerD3D9::sMaskQuadRegister = 11;
+
+DeviceManagerD3D9::DeviceManagerD3D9()
+  : mTextureHostList(nullptr)
+  , mDeviceResetCount(0)
+  , mMaxTextureSize(0)
+  , mTextureAddressingMode(D3DTADDRESS_CLAMP)
+  , mHasDynamicTextures(false)
+  , mDeviceWasRemoved(false)
+{
+}
+
+DeviceManagerD3D9::~DeviceManagerD3D9()
+{
+  DestroyDevice();
+}
+
+bool
+DeviceManagerD3D9::Init()
+{
+  WNDCLASSW wc;
+  HRESULT hr;
+
+  if (!GetClassInfoW(GetModuleHandle(nullptr), kClassName, &wc)) {
+      ZeroMemory(&wc, sizeof(WNDCLASSW));
+      wc.hInstance = GetModuleHandle(nullptr);
+      wc.lpfnWndProc = ::DefWindowProc;
+      wc.lpszClassName = kClassName;
+      if (!RegisterClassW(&wc)) {
+          NS_WARNING("Failed to register window class for DeviceManager.");
+          return false;
+      }
+  }
+
+  mFocusWnd = ::CreateWindowW(kClassName, L"D3D9Window", WS_OVERLAPPEDWINDOW,
+                              CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr,
+                              nullptr, GetModuleHandle(nullptr), nullptr);
+
+  if (!mFocusWnd) {
+    NS_WARNING("Failed to create DeviceManagerD3D9 Window.");
+    return false;
+  }
+
+  /* Create an Nv3DVUtils instance */ 
+  if (!mNv3DVUtils) { 
+    mNv3DVUtils = new Nv3DVUtils(); 
+    if (!mNv3DVUtils) { 
+      NS_WARNING("Could not create a new instance of Nv3DVUtils.\n"); 
+    } 
+  } 
+
+  /* Initialize the Nv3DVUtils object */ 
+  if (mNv3DVUtils) { 
+    mNv3DVUtils->Initialize(); 
+  } 
+
+  HMODULE d3d9 = LoadLibraryW(L"d3d9.dll");
+  decltype(Direct3DCreate9)* d3d9Create = (decltype(Direct3DCreate9)*)
+    GetProcAddress(d3d9, "Direct3DCreate9");
+  decltype(Direct3DCreate9Ex)* d3d9CreateEx = (decltype(Direct3DCreate9Ex)*)
+    GetProcAddress(d3d9, "Direct3DCreate9Ex");
+
+#ifdef USE_D3D9EX
+  if (d3d9CreateEx) {
+    hr = d3d9CreateEx(D3D_SDK_VERSION, getter_AddRefs(mD3D9Ex));
+    if (SUCCEEDED(hr)) {
+      mD3D9 = mD3D9Ex;
+    }
+  }
+#endif
+
+  if (!mD3D9) {
+    if (!d3d9Create) {
+      return false;
+    }
+
+    mD3D9 = dont_AddRef(d3d9Create(D3D_SDK_VERSION));
+
+    if (!mD3D9) {
+      return false;
+    }
+  }
+
+  D3DADAPTER_IDENTIFIER9 ident;
+  hr = mD3D9->GetAdapterIdentifier(D3DADAPTER_DEFAULT, 0, &ident);
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  D3DPRESENT_PARAMETERS pp;
+  memset(&pp, 0, sizeof(D3DPRESENT_PARAMETERS));
+
+  pp.BackBufferWidth = 1;
+  pp.BackBufferHeight = 1;
+  pp.BackBufferFormat = D3DFMT_A8R8G8B8;
+  pp.SwapEffect = D3DSWAPEFFECT_DISCARD;
+  pp.Windowed = TRUE;
+  pp.PresentationInterval = D3DPRESENT_INTERVAL_DEFAULT;
+  pp.hDeviceWindow = mFocusWnd;
+
+  if (mD3D9Ex) {
+    hr = mD3D9Ex->CreateDeviceEx(D3DADAPTER_DEFAULT,
+                                 D3DDEVTYPE_HAL,
+                                 mFocusWnd,
+                                 D3DCREATE_FPU_PRESERVE |
+                                 D3DCREATE_MULTITHREADED |
+                                 D3DCREATE_MIXED_VERTEXPROCESSING,
+                                 &pp,
+                                 nullptr,
+                                 getter_AddRefs(mDeviceEx));
+    if (SUCCEEDED(hr)) {
+      mDevice = mDeviceEx;
+    }
+
+    D3DCAPS9 caps;
+    if (mDeviceEx && mDeviceEx->GetDeviceCaps(&caps)) {
+      if (LACKS_CAP(caps.Caps2, D3DCAPS2_DYNAMICTEXTURES)) {
+        // XXX - Should we actually hit this we'll need a CanvasLayer that
+        // supports static D3DPOOL_DEFAULT textures.
+        NS_WARNING("D3D9Ex device not used because of lack of support for \
+                   dynamic textures. This is unexpected.");
+        mDevice = nullptr;
+        mDeviceEx = nullptr;
+      }
+    }
+  }
+
+  if (!mDevice) {
+    hr = mD3D9->CreateDevice(D3DADAPTER_DEFAULT,
+                             D3DDEVTYPE_HAL,
+                             mFocusWnd,
+                             D3DCREATE_FPU_PRESERVE |
+                             D3DCREATE_MULTITHREADED |
+                             D3DCREATE_MIXED_VERTEXPROCESSING,
+                             &pp,
+                             getter_AddRefs(mDevice));
+
+    if (FAILED(hr)) {
+      NS_WARNING("Failed to create Device for DeviceManagerD3D9.");
+      return false;
+    }
+  }
+
+  if (!VerifyCaps()) {
+    return false;
+  }
+
+  /* Grab the associated HMONITOR so that we can find out
+   * if it changed later */
+  D3DDEVICE_CREATION_PARAMETERS parameters;
+  if (FAILED(mDevice->GetCreationParameters(&parameters)))
+    return false;
+  mDeviceMonitor = mD3D9->GetAdapterMonitor(parameters.AdapterOrdinal);
+
+
+  /* 
+   * Do some post device creation setup 
+   */ 
+  if (mNv3DVUtils) { 
+    IUnknown* devUnknown = nullptr; 
+    if (mDevice) { 
+      mDevice->QueryInterface(IID_IUnknown, (void **)&devUnknown); 
+    } 
+    mNv3DVUtils->SetDeviceInfo(devUnknown); 
+  } 
+
+  hr = mDevice->CreateVertexShader((DWORD*)LayerQuadVS,
+                                   getter_AddRefs(mLayerVS));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)RGBShaderPS,
+                                  getter_AddRefs(mRGBPS));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)RGBAShaderPS,
+                                  getter_AddRefs(mRGBAPS));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)ComponentPass1ShaderPS,
+                                  getter_AddRefs(mComponentPass1PS));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)ComponentPass2ShaderPS,
+                                  getter_AddRefs(mComponentPass2PS));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)YCbCrShaderPS,
+                                  getter_AddRefs(mYCbCrPS));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)SolidColorShaderPS,
+                                  getter_AddRefs(mSolidColorPS));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreateVertexShader((DWORD*)LayerQuadVSMask,
+                                   getter_AddRefs(mLayerVSMask));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+  hr = mDevice->CreateVertexShader((DWORD*)LayerQuadVSMask3D,
+                                   getter_AddRefs(mLayerVSMask3D));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)RGBShaderPSMask,
+                                  getter_AddRefs(mRGBPSMask));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)RGBAShaderPSMask,
+                                  getter_AddRefs(mRGBAPSMask));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)RGBAShaderPSMask3D,
+                                  getter_AddRefs(mRGBAPSMask3D));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)ComponentPass1ShaderPSMask,
+                                  getter_AddRefs(mComponentPass1PSMask));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)ComponentPass2ShaderPSMask,
+                                  getter_AddRefs(mComponentPass2PSMask));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)YCbCrShaderPSMask,
+                                  getter_AddRefs(mYCbCrPSMask));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  hr = mDevice->CreatePixelShader((DWORD*)SolidColorShaderPSMask,
+                                  getter_AddRefs(mSolidColorPSMask));
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  if (!CreateVertexBuffer()) {
+    return false;
+  }
+
+  hr = mDevice->SetStreamSource(0, mVB, 0, sizeof(vertex));
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  D3DVERTEXELEMENT9 elements[] = {
+    { 0, 0, D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT,
+      D3DDECLUSAGE_POSITION, 0 },
+    D3DDECL_END()
+  };
+
+  mDevice->CreateVertexDeclaration(elements, getter_AddRefs(mVD));
+
+  nsCOMPtr<nsIConsoleService>
+    console(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
+
+  D3DADAPTER_IDENTIFIER9 identifier;
+  mD3D9->GetAdapterIdentifier(D3DADAPTER_DEFAULT, 0, &identifier);
+
+  if (console) {
+    nsString msg;
+    msg +=
+      NS_LITERAL_STRING("Direct3D 9 DeviceManager Initialized Successfully.\nDriver: ");
+    msg += NS_ConvertUTF8toUTF16(
+      nsDependentCString((const char*)identifier.Driver));
+    msg += NS_LITERAL_STRING("\nDescription: ");
+    msg += NS_ConvertUTF8toUTF16(
+      nsDependentCString((const char*)identifier.Description));
+    msg += NS_LITERAL_STRING("\nVersion: ");
+    msg += NS_ConvertUTF8toUTF16(
+      nsPrintfCString("%d.%d.%d.%d",
+                      HIWORD(identifier.DriverVersion.HighPart),
+                      LOWORD(identifier.DriverVersion.HighPart),
+                      HIWORD(identifier.DriverVersion.LowPart),
+                      LOWORD(identifier.DriverVersion.LowPart)));
+    console->LogStringMessage(msg.get());
+  }
+
+  return true;
+}
+
+void
+DeviceManagerD3D9::SetupRenderState()
+{
+  mDevice->SetStreamSource(0, mVB, 0, sizeof(vertex));
+  mDevice->SetVertexDeclaration(mVD);
+  mDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
+  mDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE);
+  mDevice->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD);
+  mDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
+  mDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
+  mDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, TRUE);
+  mDevice->SetRenderState(D3DRS_SRCBLENDALPHA, D3DBLEND_ONE);
+  mDevice->SetRenderState(D3DRS_DESTBLENDALPHA, D3DBLEND_INVSRCALPHA);
+  mDevice->SetRenderState(D3DRS_BLENDOPALPHA, D3DBLENDOP_ADD);
+  mDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
+  mDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
+  mDevice->SetSamplerState(1, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
+  mDevice->SetSamplerState(1, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
+  mDevice->SetSamplerState(2, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
+  mDevice->SetSamplerState(2, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
+  mDevice->SetSamplerState(0, D3DSAMP_ADDRESSU, mTextureAddressingMode);
+  mDevice->SetSamplerState(0, D3DSAMP_ADDRESSV, mTextureAddressingMode);
+  mDevice->SetSamplerState(1, D3DSAMP_ADDRESSU, mTextureAddressingMode);
+  mDevice->SetSamplerState(1, D3DSAMP_ADDRESSV, mTextureAddressingMode);
+  mDevice->SetSamplerState(2, D3DSAMP_ADDRESSU, mTextureAddressingMode);
+  mDevice->SetSamplerState(2, D3DSAMP_ADDRESSV, mTextureAddressingMode);
+}
+
+already_AddRefed<SwapChainD3D9>
+DeviceManagerD3D9::CreateSwapChain(HWND hWnd)
+{
+  nsRefPtr<SwapChainD3D9> swapChain = new SwapChainD3D9(this);
+  
+  // See bug 604647. This line means that if we create a window while the
+  // device is lost LayerManager initialization will fail, this window
+  // will be permanently unaccelerated. This should be a rare situation
+  // though and the need for a low-risk fix for this bug outweighs the
+  // downside.
+  if (VerifyReadyForRendering() != DeviceOK) {
+    return nullptr;
+  }
+
+  if (!swapChain->Init(hWnd)) {
+    return nullptr;
+  }
+
+  return swapChain.forget();
+}
+
+/*
+  * Finds a texture for the mask layer and sets it as an
+  * input to the shaders.
+  * Returns true if a texture is loaded, false if 
+  * a texture for the mask layer could not be loaded.
+  */
+bool
+LoadMaskTexture(Layer* aMask, IDirect3DDevice9* aDevice,
+                uint32_t aMaskTexRegister)
+{
+  IntSize size;
+  nsRefPtr<IDirect3DTexture9> texture =
+    static_cast<LayerD3D9*>(aMask->ImplData())->GetAsTexture(&size);
+
+  if (!texture) {
+    return false;
+  }
+
+  Matrix maskTransform;
+  Matrix4x4 effectiveTransform = aMask->GetEffectiveTransform();
+  bool maskIs2D = effectiveTransform.CanDraw2D(&maskTransform);
+  NS_ASSERTION(maskIs2D, "How did we end up with a 3D transform here?!");
+  Rect bounds = Rect(Point(), Size(size));
+  bounds = maskTransform.TransformBounds(bounds);
+
+  aDevice->SetVertexShaderConstantF(DeviceManagerD3D9::sMaskQuadRegister,
+                                    ShaderConstantRect((float)bounds.x,
+                                                       (float)bounds.y,
+                                                       (float)bounds.width,
+                                                       (float)bounds.height),
+                                    1);
+
+  aDevice->SetTexture(aMaskTexRegister, texture);
+  return true;
+}
+
+uint32_t
+DeviceManagerD3D9::SetShaderMode(ShaderMode aMode, MaskType aMaskType)
+{
+  if (aMaskType == MaskNone) {
+    switch (aMode) {
+      case RGBLAYER:
+        mDevice->SetVertexShader(mLayerVS);
+        mDevice->SetPixelShader(mRGBPS);
+        break;
+      case RGBALAYER:
+        mDevice->SetVertexShader(mLayerVS);
+        mDevice->SetPixelShader(mRGBAPS);
+        break;
+      case COMPONENTLAYERPASS1:
+        mDevice->SetVertexShader(mLayerVS);
+        mDevice->SetPixelShader(mComponentPass1PS);
+        break;
+      case COMPONENTLAYERPASS2:
+        mDevice->SetVertexShader(mLayerVS);
+        mDevice->SetPixelShader(mComponentPass2PS);
+        break;
+      case YCBCRLAYER:
+        mDevice->SetVertexShader(mLayerVS);
+        mDevice->SetPixelShader(mYCbCrPS);
+        break;
+      case SOLIDCOLORLAYER:
+        mDevice->SetVertexShader(mLayerVS);
+        mDevice->SetPixelShader(mSolidColorPS);
+        break;
+    }
+    return 0;
+  }
+
+  uint32_t maskTexRegister;
+  switch (aMode) {
+    case RGBLAYER:
+      mDevice->SetVertexShader(mLayerVSMask);
+      mDevice->SetPixelShader(mRGBPSMask);
+      maskTexRegister = 1;
+      break;
+    case RGBALAYER:
+      if (aMaskType == Mask2d) {
+        mDevice->SetVertexShader(mLayerVSMask);
+        mDevice->SetPixelShader(mRGBAPSMask);
+      } else {
+        mDevice->SetVertexShader(mLayerVSMask3D);
+        mDevice->SetPixelShader(mRGBAPSMask3D);
+      }
+      maskTexRegister = 1;
+      break;
+    case COMPONENTLAYERPASS1:
+      mDevice->SetVertexShader(mLayerVSMask);
+      mDevice->SetPixelShader(mComponentPass1PSMask);
+      maskTexRegister = 2;
+      break;
+    case COMPONENTLAYERPASS2:
+      mDevice->SetVertexShader(mLayerVSMask);
+      mDevice->SetPixelShader(mComponentPass2PSMask);
+      maskTexRegister = 2;
+      break;
+    case YCBCRLAYER:
+      mDevice->SetVertexShader(mLayerVSMask);
+      mDevice->SetPixelShader(mYCbCrPSMask);
+      maskTexRegister = 3;
+      break;
+    case SOLIDCOLORLAYER:
+      mDevice->SetVertexShader(mLayerVSMask);
+      mDevice->SetPixelShader(mSolidColorPSMask);
+      maskTexRegister = 0;
+      break;
+  }
+  return maskTexRegister;
+}
+
+void
+DeviceManagerD3D9::SetShaderMode(ShaderMode aMode, Layer* aMask, bool aIs2D)
+{
+  MaskType maskType = MaskNone;
+  if (aMask) {
+    maskType = aIs2D ? Mask2d : Mask3d;
+  }
+  uint32_t maskTexRegister = SetShaderMode(aMode, maskType);
+  if (aMask) {
+    // register allocations are taken from LayerManagerD3D9Shaders.h after
+    // the shaders are compiled (genshaders.sh)
+    if (!LoadMaskTexture(aMask, mDevice, maskTexRegister)) {
+      // if we can't load the mask, fall back to unmasked rendering
+      NS_WARNING("Could not load texture for mask layer.");
+      SetShaderMode(aMode, MaskNone);
+    }
+  }
+}
+
+void
+DeviceManagerD3D9::DestroyDevice()
+{
+  ++mDeviceResetCount;
+  mDeviceWasRemoved = true;
+  if (!IsD3D9Ex()) {
+    ReleaseTextureResources();
+  }
+  gfxWindowsPlatform::GetPlatform()->OnDeviceManagerDestroy(this);
+}
+
+DeviceManagerState
+DeviceManagerD3D9::VerifyReadyForRendering()
+{
+  if (mDeviceWasRemoved) {
+    return DeviceMustRecreate;
+  }
+
+  HRESULT hr = mDevice->TestCooperativeLevel();
+
+  if (SUCCEEDED(hr)) {
+    if (IsD3D9Ex()) {
+      hr = mDeviceEx->CheckDeviceState(mFocusWnd);
+
+      if (FAILED(hr)) {
+        DestroyDevice();
+        return DeviceMustRecreate;
+      }
+    }
+    return DeviceOK;
+  }
+
+  // We need to release all texture resources and swap chains before resetting.
+  for (unsigned int i = 0; i < mLayersWithResources.Length(); i++) {
+    mLayersWithResources[i]->CleanResources();
+  }
+  ReleaseTextureResources();
+  for (unsigned int i = 0; i < mSwapChains.Length(); i++) {
+    mSwapChains[i]->Reset();
+  }
+
+  mVB = nullptr;
+
+  D3DPRESENT_PARAMETERS pp;
+  memset(&pp, 0, sizeof(D3DPRESENT_PARAMETERS));
+
+  pp.BackBufferWidth = 1;
+  pp.BackBufferHeight = 1;
+  pp.BackBufferFormat = D3DFMT_A8R8G8B8;
+  pp.SwapEffect = D3DSWAPEFFECT_DISCARD;
+  pp.Windowed = TRUE;
+  pp.PresentationInterval = D3DPRESENT_INTERVAL_DEFAULT;
+  pp.hDeviceWindow = mFocusWnd;
+
+  // Whatever happens from now on, either we reset the device, or we should
+  // pretend we reset the device so that the layer manager or compositor
+  // doesn't ignore it.
+  ++mDeviceResetCount;
+
+  // if we got this far, we know !SUCCEEDEED(hr), that means hr is one of
+  // D3DERR_DEVICELOST, D3DERR_DEVICENOTRESET, D3DERR_DRIVERINTERNALERROR.
+  // It is only worth resetting if we get D3DERR_DEVICENOTRESET. If we get
+  // D3DERR_DEVICELOST we can wait and see if we get D3DERR_DEVICENOTRESET
+  // later, then reset.
+  if (hr == D3DERR_DEVICELOST) {
+    HMONITOR hMonitorWindow;
+    hMonitorWindow = MonitorFromWindow(mFocusWnd, MONITOR_DEFAULTTOPRIMARY);
+    if (hMonitorWindow != mDeviceMonitor) {
+      /* jrmuizel: I'm not sure how to trigger this case. Usually, we get
+       * DEVICENOTRESET right away and Reset() succeeds without going through a
+       * set of DEVICELOSTs. This is presumeably because we don't call
+       * VerifyReadyForRendering when we don't have any reason to paint.
+       * Hopefully comparing HMONITORs is not overly aggressive.
+       * See bug 626678.
+       */
+      /* The monitor has changed. We have to assume that the
+       * DEVICENOTRESET will not be coming. */
+      DestroyDevice();
+      return DeviceMustRecreate;
+    }
+    return DeviceFail;
+  }
+  if (hr == D3DERR_DEVICENOTRESET) {
+    hr = mDevice->Reset(&pp);
+  }
+
+  if (FAILED(hr) || !CreateVertexBuffer()) {
+    DestroyDevice();
+    return DeviceMustRecreate;
+  }
+
+  return DeviceOK;
+}
+
+bool
+DeviceManagerD3D9::VerifyCaps()
+{
+  D3DCAPS9 caps;
+  HRESULT hr = mDevice->GetDeviceCaps(&caps);
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  if (LACKS_CAP(caps.DevCaps, D3DDEVCAPS_TEXTUREVIDEOMEMORY)) {
+    return false;
+  }
+
+  if (LACKS_CAP(caps.PrimitiveMiscCaps, D3DPMISCCAPS_CULLNONE)) {
+    return false;
+  }
+
+  if (LACKS_CAP(caps.SrcBlendCaps, D3DPBLENDCAPS_ONE) ||
+      LACKS_CAP(caps.SrcBlendCaps, D3DBLEND_SRCALPHA) ||
+      LACKS_CAP(caps.DestBlendCaps, D3DPBLENDCAPS_INVSRCALPHA)) {
+    return false;
+  }
+
+  if (LACKS_CAP(caps.RasterCaps, D3DPRASTERCAPS_SCISSORTEST)) {
+    return false;
+  }
+
+  if (LACKS_CAP(caps.TextureCaps, D3DPTEXTURECAPS_ALPHA) ||
+      HAS_CAP(caps.TextureCaps, D3DPTEXTURECAPS_SQUAREONLY) ||
+      (HAS_CAP(caps.TextureCaps, D3DPTEXTURECAPS_POW2) &&
+       LACKS_CAP(caps.TextureCaps, D3DPTEXTURECAPS_NONPOW2CONDITIONAL))) {
+    return false;
+  }
+
+  if (LACKS_CAP(caps.TextureFilterCaps, D3DPTFILTERCAPS_MAGFLINEAR) ||
+      LACKS_CAP(caps.TextureFilterCaps, D3DPTFILTERCAPS_MINFLINEAR)) {
+    return false;
+  }
+
+  if (LACKS_CAP(caps.TextureAddressCaps, D3DPTADDRESSCAPS_CLAMP)) {
+    return false;
+  }
+
+  if (caps.MaxTextureHeight < 4096 ||
+      caps.MaxTextureWidth < 4096) {
+    return false;
+  }
+  mMaxTextureSize = std::min(caps.MaxTextureHeight, caps.MaxTextureWidth);
+
+  if ((caps.PixelShaderVersion & 0xffff) < 0x200 ||
+      (caps.VertexShaderVersion & 0xffff) < 0x200) {
+    return false;
+  }
+
+  if (HAS_CAP(caps.Caps2, D3DCAPS2_DYNAMICTEXTURES)) {
+    mHasDynamicTextures = true;
+  }
+
+  if (HAS_CAP(caps.TextureAddressCaps, D3DPTADDRESSCAPS_WRAP) &&
+      LACKS_CAP(caps.TextureCaps, D3DPTEXTURECAPS_NONPOW2CONDITIONAL)) {
+    mTextureAddressingMode = D3DTADDRESS_WRAP;
+  } else {
+    gfxPlatform::DisableBufferRotation();
+  }
+
+  return true;
+}
+
+bool
+DeviceManagerD3D9::CreateVertexBuffer()
+{
+  HRESULT hr;
+
+  hr = mDevice->CreateVertexBuffer(sizeof(vertex) * 4,
+                                   D3DUSAGE_WRITEONLY,
+                                   0,
+                                   D3DPOOL_DEFAULT,
+                                   getter_AddRefs(mVB),
+                                   nullptr);
+
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  vertex *vertices;
+  hr = mVB->Lock(0, 0, (void**)&vertices, 0);
+  if (FAILED(hr)) {
+    return false;
+  }
+
+  vertices[0].x = vertices[0].y = 0;
+  vertices[1].x = 1; vertices[1].y = 0;
+  vertices[2].x = 0; vertices[2].y = 1;
+  vertices[3].x = 1; vertices[3].y = 1;
+
+  mVB->Unlock();
+
+  return true;
+}
+
+TemporaryRef<IDirect3DTexture9>
+DeviceManagerD3D9::CreateTexture(const IntSize &aSize,
+                                 _D3DFORMAT aFormat,
+                                 D3DPOOL aPool,
+                                 TextureSourceD3D9* aTextureHost)
+{
+  if (mDeviceWasRemoved) {
+    return nullptr;
+  }
+  RefPtr<IDirect3DTexture9> result;
+  if (FAILED(device()->CreateTexture(aSize.width, aSize.height,
+                                     1, 0, aFormat, aPool,
+                                     byRef(result), nullptr))) {
+    return nullptr;
+  }
+
+  NS_ASSERTION(aPool != D3DPOOL_MANAGED,
+               "Should not be using MANAGED texture pool. We will get an error when we have to recreate the device");
+  if (aPool == D3DPOOL_DEFAULT) {
+    MOZ_ASSERT(aTextureHost, "We need a texture host to track so we can release the texture.");
+    RegisterTextureHost(aTextureHost);
+  }
+
+  return result;
+}
+
+#ifdef DEBUG
+bool
+DeviceManagerD3D9::IsInTextureHostList(TextureSourceD3D9* aFind)
+{
+  TextureSourceD3D9* cur = mTextureHostList;
+  while(cur) {
+    if (cur == aFind) {
+      return true;
+    }
+    cur = cur->mNextHost;
+  }
+
+  return false;
+}
+#endif
+
+void
+DeviceManagerD3D9::RegisterTextureHost(TextureSourceD3D9* aHost)
+{
+  if (!aHost) {
+    return;
+  }
+
+  // Don't add aHost to the list twice.
+  if (aHost->mPreviousHost ||
+      mTextureHostList == aHost) {
+    MOZ_ASSERT(IsInTextureHostList(aHost));
+    return;
+  }
+
+  MOZ_ASSERT(!aHost->mNextHost);
+  MOZ_ASSERT(!IsInTextureHostList(aHost));
+
+  if (mTextureHostList) {
+    MOZ_ASSERT(!mTextureHostList->mPreviousHost);
+    mTextureHostList->mPreviousHost = aHost;
+    aHost->mNextHost = mTextureHostList;
+  }
+  mTextureHostList = aHost;
+  MOZ_ASSERT(!aHost->mCreatingDeviceManager, "Already created texture?");
+  MOZ_ASSERT(IsInTextureHostList(aHost));
+  aHost->mCreatingDeviceManager = this;
+}
+
+void
+DeviceManagerD3D9::ReleaseTextureResources()
+{
+  TextureSourceD3D9* host = mTextureHostList;
+  while (host) {
+    host->ReleaseTextureResources();
+    TextureSourceD3D9* oldHost = host;
+    host = oldHost->mNextHost;
+    oldHost->mPreviousHost = nullptr;
+    oldHost->mNextHost = nullptr;
+    oldHost->mCreatingDeviceManager = nullptr;
+  }
+  mTextureHostList = nullptr;
+}
+
+void
+DeviceManagerD3D9::RemoveTextureListHead(TextureSourceD3D9* aHost)
+{
+  MOZ_ASSERT(!aHost->mCreatingDeviceManager || aHost->mCreatingDeviceManager == this,
+             "Wrong device manager");
+  MOZ_ASSERT(aHost && mTextureHostList == aHost,
+             "aHost is not the head of the texture host list");
+  mTextureHostList = aHost->mNextHost;
+}
+
+} /* namespace layers */
+} /* namespace mozilla */