1 files changed, 111 insertions, 0 deletions
diff --git a/gfx/layers/wr/WebRenderTextureHost.h b/gfx/layers/wr/WebRenderTextureHost.h
new file mode 100644
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+++ b/gfx/layers/wr/WebRenderTextureHost.h
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+/* -*- 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/. */
+
+#ifndef MOZILLA_GFX_WEBRENDERTEXTUREHOST_H
+#define MOZILLA_GFX_WEBRENDERTEXTUREHOST_H
+
+#include "mozilla/layers/TextureHost.h"
+#include "mozilla/webrender/WebRenderTypes.h"
+
+namespace mozilla {
+namespace layers {
+
+class SurfaceDescriptor;
+
+// This textureHost is specialized for WebRender usage. With WebRender, there is
+// no Compositor during composition. Instead, we use RendererOGL for
+// composition. So, there are some UNREACHABLE asserts for the original
+// Compositor related code path in this class. Furthermore, the RendererOGL runs
+// at RenderThead instead of Compositor thread. This class is also creating the
+// corresponding RenderXXXTextureHost used by RendererOGL at RenderThread.
+class WebRenderTextureHost : public TextureHost {
+ public:
+  WebRenderTextureHost(const SurfaceDescriptor& aDesc, TextureFlags aFlags,
+                       TextureHost* aTexture,
+                       wr::ExternalImageId& aExternalImageId);
+  virtual ~WebRenderTextureHost();
+
+  void DeallocateDeviceData() override {}
+
+  bool Lock() override;
+
+  void Unlock() override;
+
+  void PrepareTextureSource(CompositableTextureSourceRef& aTexture) override;
+  bool BindTextureSource(CompositableTextureSourceRef& aTexture) override;
+  void UnbindTextureSource() override;
+  void SetTextureSourceProvider(TextureSourceProvider* aProvider) override;
+
+  gfx::SurfaceFormat GetFormat() const override;
+
+  virtual void NotifyNotUsed() override;
+
+  virtual bool IsValid() override;
+
+  // Return the format used for reading the texture. Some hardware specific
+  // textureHosts use their special data representation internally, but we could
+  // treat these textureHost as the read-format when we read them.
+  // Please check TextureHost::GetReadFormat().
+  gfx::SurfaceFormat GetReadFormat() const override;
+
+  already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override;
+
+  gfx::YUVColorSpace GetYUVColorSpace() const override;
+  gfx::ColorRange GetColorRange() const override;
+
+  gfx::IntSize GetSize() const override;
+
+#ifdef MOZ_LAYERS_HAVE_LOG
+  const char* Name() override { return "WebRenderTextureHost"; }
+#endif
+
+  WebRenderTextureHost* AsWebRenderTextureHost() override { return this; }
+
+  virtual void PrepareForUse() override;
+
+  wr::ExternalImageId GetExternalImageKey();
+
+  int32_t GetRGBStride();
+
+  bool HasIntermediateBuffer() const override;
+
+  bool NeedsDeferredDeletion() const override;
+
+  uint32_t NumSubTextures() override;
+
+  void PushResourceUpdates(wr::TransactionBuilder& aResources,
+                           ResourceUpdateOp aOp,
+                           const Range<wr::ImageKey>& aImageKeys,
+                           const wr::ExternalImageId& aExtID) override;
+
+  void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
+                        const wr::LayoutRect& aBounds,
+                        const wr::LayoutRect& aClip, wr::ImageRendering aFilter,
+                        const Range<wr::ImageKey>& aImageKeys,
+                        PushDisplayItemFlagSet aFlags) override;
+
+  bool SupportsExternalCompositing() override;
+
+  bool NeedsYFlip() const override;
+
+  void SetAcquireFence(mozilla::ipc::FileDescriptor&& aFenceFd) override;
+
+  void SetReleaseFence(mozilla::ipc::FileDescriptor&& aFenceFd) override;
+
+  mozilla::ipc::FileDescriptor GetAndResetReleaseFence() override;
+
+  AndroidHardwareBuffer* GetAndroidHardwareBuffer() const override;
+
+  void MaybeNotifyForUse(wr::TransactionBuilder& aTxn);
+
+ protected:
+  RefPtr<TextureHost> mWrappedTextureHost;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif  // MOZILLA_GFX_WEBRENDERTEXTUREHOST_H