1 files changed, 100 insertions, 0 deletions
diff --git a/gfx/layers/mlgpu/PaintedLayerMLGPU.h b/gfx/layers/mlgpu/PaintedLayerMLGPU.h
new file mode 100644
index 0000000000..670ede556a
--- /dev/null
+++ b/gfx/layers/mlgpu/PaintedLayerMLGPU.h
@@ -0,0 +1,100 @@
+/* -*- 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_PAINTEDLAYERMLGPU_H
+#define MOZILLA_GFX_PAINTEDLAYERMLGPU_H
+
+#include "LayerManagerMLGPU.h"
+#include "mozilla/layers/ContentHost.h"
+#include "mozilla/layers/LayerMLGPU.h"
+#include "MLGDeviceTypes.h"
+#include "nsRegionFwd.h"
+#include <functional>
+
+namespace mozilla {
+namespace layers {
+
+class TiledLayerBufferComposite;
+
+class PaintedLayerMLGPU final : public PaintedLayer, public LayerMLGPU {
+ public:
+  explicit PaintedLayerMLGPU(LayerManagerMLGPU* aManager);
+  virtual ~PaintedLayerMLGPU();
+
+  // Layer
+  HostLayer* AsHostLayer() override { return this; }
+  PaintedLayerMLGPU* AsPaintedLayerMLGPU() override { return this; }
+  Layer* GetLayer() override { return this; }
+  bool SetCompositableHost(CompositableHost*) override;
+  CompositableHost* GetCompositableHost() override;
+  void Disconnect() override;
+  bool IsContentOpaque() override;
+
+  // PaintedLayer
+  void InvalidateRegion(const nsIntRegion& aRegion) override {
+    MOZ_CRASH("PaintedLayerMLGPU can't fill invalidated regions");
+  }
+
+  bool HasComponentAlpha() const { return !!mTextureOnWhite; }
+  TextureSource* GetTexture() const { return mTexture; }
+  TextureSource* GetTextureOnWhite() const {
+    MOZ_ASSERT(HasComponentAlpha());
+    return mTextureOnWhite;
+  }
+  gfx::Point GetDestOrigin() const;
+
+  SamplerMode GetSamplerMode() {
+    // Note that when resamping, we must break the texture coordinates into
+    // no-repeat rects. When we have simple integer translations we can
+    // simply wrap around the edge of the buffer texture.
+    return MayResample() ? SamplerMode::LinearClamp : SamplerMode::LinearRepeat;
+  }
+
+  void SetRenderRegion(LayerIntRegion&& aRegion) override;
+
+  // To avoid sampling issues with complex regions and transforms, we
+  // squash the visible region for PaintedLayers into a single draw
+  // rect. RenderPasses should use this method instead of GetRenderRegion.
+  const LayerIntRegion& GetDrawRects();
+
+  MOZ_LAYER_DECL_NAME("PaintedLayerMLGPU", TYPE_PAINTED)
+
+  void CleanupCachedResources();
+
+ protected:
+  void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
+  bool OnPrepareToRender(FrameBuilder* aBuilder) override;
+
+  // We override this to support tiling.
+  void AssignToView(FrameBuilder* aBuilder, RenderViewMLGPU* aView,
+                    Maybe<gfx::Polygon>&& aGeometry) override;
+
+  void AssignHighResTilesToView(FrameBuilder* aBuilder, RenderViewMLGPU* aView,
+                                TiledContentHost* aTileHost,
+                                const Maybe<gfx::Polygon>& aGeometry);
+
+  // Helper for Assign*TilesToView.
+  void AssignTileBufferToView(FrameBuilder* aBuilder, RenderViewMLGPU* aView,
+                              TiledLayerBufferComposite& aTiles,
+                              const LayerIntRegion& aCompositeRegion,
+                              const Maybe<gfx::Polygon>& aGeometry);
+
+  void CleanupResources();
+
+ private:
+  RefPtr<ContentHost> mHost;
+  RefPtr<TextureSource> mTexture;
+  RefPtr<TextureSource> mTextureOnWhite;
+#ifndef MOZ_IGNORE_PAINT_WILL_RESAMPLE
+  LayerIntRegion mDrawRects;
+#endif
+  gfx::IntPoint mDestOrigin;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif