1 files changed, 81 insertions, 0 deletions
diff --git a/gfx/layers/mlgpu/CanvasLayerMLGPU.cpp b/gfx/layers/mlgpu/CanvasLayerMLGPU.cpp
new file mode 100644
index 0000000000..3e47709bc7
--- /dev/null
+++ b/gfx/layers/mlgpu/CanvasLayerMLGPU.cpp
@@ -0,0 +1,81 @@
+/* -*- 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 "CanvasLayerMLGPU.h"
+#include "composite/CompositableHost.h"  // for CompositableHost
+#include "gfx2DGlue.h"                   // for ToFilter
+#include "gfxEnv.h"                      // for gfxEnv, etc
+#include "mozilla/gfx/Matrix.h"          // for Matrix4x4
+#include "mozilla/gfx/Point.h"           // for Point
+#include "mozilla/gfx/Rect.h"            // for Rect
+#include "mozilla/layers/Compositor.h"   // for Compositor
+#include "mozilla/layers/Effects.h"      // for EffectChain
+#include "mozilla/layers/ImageHost.h"
+#include "mozilla/mozalloc.h"  // for operator delete
+#include "nsAString.h"
+#include "mozilla/RefPtr.h"  // for nsRefPtr
+#include "MaskOperation.h"
+#include "nsISupportsImpl.h"  // for MOZ_COUNT_CTOR, etc
+#include "nsString.h"         // for nsAutoCString
+
+namespace mozilla {
+namespace layers {
+
+using namespace mozilla::gfx;
+
+CanvasLayerMLGPU::CanvasLayerMLGPU(LayerManagerMLGPU* aManager)
+    : CanvasLayer(aManager, nullptr), TexturedLayerMLGPU(aManager) {}
+
+CanvasLayerMLGPU::~CanvasLayerMLGPU() { CleanupResources(); }
+
+Layer* CanvasLayerMLGPU::GetLayer() { return this; }
+
+gfx::SamplingFilter CanvasLayerMLGPU::GetSamplingFilter() {
+  gfx::SamplingFilter filter = mSamplingFilter;
+#ifdef ANDROID
+  // Bug 691354
+  // Using the LINEAR filter we get unexplained artifacts.
+  // Use NEAREST when no scaling is required.
+  Matrix matrix;
+  bool is2D = GetEffectiveTransform().Is2D(&matrix);
+  if (is2D && !ThebesMatrix(matrix).HasNonTranslationOrFlip()) {
+    filter = SamplingFilter::POINT;
+  }
+#endif
+  return filter;
+}
+
+void CanvasLayerMLGPU::PrintInfo(std::stringstream& aStream,
+                                 const char* aPrefix) {
+  CanvasLayer::PrintInfo(aStream, aPrefix);
+  aStream << "\n";
+  if (mHost && mHost->IsAttached()) {
+    nsAutoCString pfx(aPrefix);
+    pfx += "  ";
+    mHost->PrintInfo(aStream, pfx.get());
+  }
+}
+
+void CanvasLayerMLGPU::CleanupResources() {
+  if (mHost) {
+    mHost->Detach(this);
+  }
+  mTexture = nullptr;
+  mBigImageTexture = nullptr;
+  mHost = nullptr;
+}
+
+void CanvasLayerMLGPU::Disconnect() { CleanupResources(); }
+
+void CanvasLayerMLGPU::ClearCachedResources() { CleanupResources(); }
+
+void CanvasLayerMLGPU::SetRenderRegion(LayerIntRegion&& aRegion) {
+  aRegion.AndWith(LayerIntRect::FromUnknownRect(mPictureRect));
+  LayerMLGPU::SetRenderRegion(std::move(aRegion));
+}
+
+}  // namespace layers
+}  // namespace mozilla