import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/layers/d3d9/CompositorD3D9.h

@@ -0,0 +1,189 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_GFX_COMPOSITORD3D9_H
+#define MOZILLA_GFX_COMPOSITORD3D9_H
+
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/Point.h"
+#include "gfx2DGlue.h"
+#include "mozilla/layers/Compositor.h"
+#include "mozilla/layers/TextureD3D9.h"
+#include "DeviceManagerD3D9.h"
+
+class nsWidget;
+
+namespace mozilla {
+namespace layers {
+
+class CompositorD3D9 : public Compositor
+{
+public:
+  CompositorD3D9(CompositorBridgeParent* aParent, widget::CompositorWidget* aWidget);
+  ~CompositorD3D9();
+
+  virtual CompositorD3D9* AsCompositorD3D9() override { return this; }
+
+  virtual bool Initialize(nsCString* const out_failureReason) override;
+
+  virtual TextureFactoryIdentifier
+    GetTextureFactoryIdentifier() override;
+
+  virtual bool CanUseCanvasLayerForSize(const gfx::IntSize &aSize) override;
+  virtual int32_t GetMaxTextureSize() const final;
+
+  virtual void MakeCurrent(MakeCurrentFlags aFlags = 0) override {}
+
+  virtual already_AddRefed<CompositingRenderTarget>
+    CreateRenderTarget(const gfx::IntRect &aRect,
+                       SurfaceInitMode aInit) override;
+
+  virtual already_AddRefed<CompositingRenderTarget>
+    CreateRenderTargetFromSource(const gfx::IntRect &aRect,
+                                 const CompositingRenderTarget *aSource,
+                                 const gfx::IntPoint &aSourcePoint) override;
+
+  virtual void SetRenderTarget(CompositingRenderTarget *aSurface) override;
+  virtual CompositingRenderTarget* GetCurrentRenderTarget() const override
+  {
+    return mCurrentRT;
+  }
+
+  virtual void SetDestinationSurfaceSize(const gfx::IntSize& aSize) override {}
+
+  virtual void ClearRect(const gfx::Rect& aRect) override;
+
+  virtual void DrawQuad(const gfx::Rect &aRect,
+                        const gfx::IntRect &aClipRect,
+                        const EffectChain &aEffectChain,
+                        gfx::Float aOpacity,
+                        const gfx::Matrix4x4& aTransform,
+                        const gfx::Rect& aVisibleRect) override;
+
+  virtual void BeginFrame(const nsIntRegion& aInvalidRegion,
+                          const gfx::IntRect *aClipRectIn,
+                          const gfx::IntRect& aRenderBounds,
+                          const nsIntRegion& aOpaqueRegion,
+                          gfx::IntRect *aClipRectOut = nullptr,
+                          gfx::IntRect *aRenderBoundsOut = nullptr) override;
+
+  virtual void EndFrame() override;
+
+  virtual void EndFrameForExternalComposition(const gfx::Matrix& aTransform) override {}
+
+  virtual void PrepareViewport(const gfx::IntSize& aSize);
+
+  virtual bool SupportsPartialTextureUpdate() override{ return true; }
+
+  virtual bool SupportsEffect(EffectTypes aEffect) override;
+
+#ifdef MOZ_DUMP_PAINTING
+  virtual const char* Name() const override { return "Direct3D9"; }
+#endif
+
+  virtual LayersBackend GetBackendType() const override {
+    return LayersBackend::LAYERS_D3D9;
+  }
+
+  IDirect3DDevice9* device() const
+  {
+    // If the reset counts don't match it means the device was lost and we are
+    // in the process of recreating a new one or will be soon.
+    // cf. comment in EnsureSwapChain.
+    return mDeviceManager && mDeviceResetCount == mDeviceManager->GetDeviceResetCount()
+           ? mDeviceManager->device()
+           : nullptr;
+  }
+
+  /**
+   * Returns true if the Compositor is ready to go.
+   * D3D9 devices can be awkward and there is a bunch of logic around
+   * resetting/recreating devices and swap chains. That is handled by this method.
+   * If we don't have a device and swap chain ready for rendering, we will return
+   * false and if necessary destroy the device and/or swap chain. We will also
+   * schedule another composite so we get another go at rendering, thus we shouldn't
+   * miss a composite due to re-creating a device.
+   */
+  virtual bool Ready() override;
+
+  /**
+   * Declare an offset to use when rendering layers. This will be ignored when
+   * rendering to a target instead of the screen.
+   */
+  virtual void SetScreenRenderOffset(const ScreenPoint& aOffset) override
+  {
+    if (aOffset.x || aOffset.y) {
+      NS_RUNTIMEABORT("SetScreenRenderOffset not supported by CompositorD3D9.");
+    }
+    // If the offset is 0, 0 that's okay.
+  }
+
+  virtual already_AddRefed<DataTextureSource>
+    CreateDataTextureSource(TextureFlags aFlags = TextureFlags::NO_FLAGS) override;
+private:
+  // ensure mSize is up to date with respect to mWidget
+  void EnsureSize();
+  void SetSamplerForSamplingFilter(gfx::SamplingFilter aSamplingFilter);
+  void PaintToTarget();
+  void SetMask(const EffectChain &aEffectChain, uint32_t aMaskTexture);
+  /**
+   * Ensure we have a swap chain and it is ready for rendering.
+   * Requires mDeviceManger to be non-null.
+   * Returns true if we have a working swap chain; false otherwise.
+   * If we cannot create or validate the swap chain due to a bad device manager,
+   * then the device will be destroyed and set mDeviceManager to null. We will
+   * schedule another composite if it is a good idea to try again or we need to
+   * recreate the device.
+   */
+  bool EnsureSwapChain();
+
+  already_AddRefed<IDirect3DTexture9>
+  CreateTexture(const gfx::IntRect& aRect,
+                const CompositingRenderTarget* aSource,
+                const gfx::IntPoint& aSourcePoint);
+
+  /**
+   * Complete a mix-blend step at the end of DrawQuad().
+   */
+  void FinishMixBlend(const gfx::IntRect& aBackdropRect,
+                      const gfx::Rect& aBackdropDest,
+                      const gfx::Matrix4x4& aBackdropTransform,
+                      RefPtr<IDirect3DTexture9> aBackdrop,
+                      gfx::CompositionOp aBlendMode);
+
+  /**
+   * DeviceManagerD3D9 keeps a count of the number of times its device is
+   * reset or recreated. We keep a parallel count (mDeviceResetCount). It
+   * is possible that we miss a reset if it is 'caused' by another
+   * compositor (for another window). In which case we need to invalidate
+   * everything and render it all. This method checks the reset counts
+   * match and if not invalidates everything (a long comment on that in
+   * the cpp file).
+   */
+  void CheckResetCount();
+
+  void FailedToResetDevice();
+
+  void ReportFailure(const nsACString &aMsg, HRESULT aCode);
+
+  /* Device manager instance for this compositor */
+  RefPtr<DeviceManagerD3D9> mDeviceManager;
+
+  /* Swap chain associated with this compositor */
+  RefPtr<SwapChainD3D9> mSwapChain;
+
+  RefPtr<CompositingRenderTargetD3D9> mDefaultRT;
+  RefPtr<CompositingRenderTargetD3D9> mCurrentRT;
+
+  LayoutDeviceIntSize mSize;
+
+  uint32_t mDeviceResetCount;
+  uint32_t mFailedResetAttempts;
+};
+
+}
+}
+
+#endif