зеркало из https://github.com/mozilla/gecko-dev.git
112 строки
3.5 KiB
C++
112 строки
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_PAINTEDLAYERMLGPU_H
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#define MOZILLA_GFX_PAINTEDLAYERMLGPU_H
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#include "LayerManagerMLGPU.h"
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#include "mozilla/layers/ContentHost.h"
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#include "MLGDeviceTypes.h"
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#include "nsRegionFwd.h"
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#include <functional>
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namespace mozilla {
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namespace layers {
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class TiledLayerBufferComposite;
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class PaintedLayerMLGPU final
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: public PaintedLayer,
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public LayerMLGPU
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{
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public:
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explicit PaintedLayerMLGPU(LayerManagerMLGPU* aManager);
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~PaintedLayerMLGPU() override;
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// Layer
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HostLayer* AsHostLayer() override { return this; }
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PaintedLayerMLGPU* AsPaintedLayerMLGPU() override { return this; }
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virtual Layer* GetLayer() override { return this; }
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bool SetCompositableHost(CompositableHost*) override;
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CompositableHost* GetCompositableHost() override;
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void Disconnect() override;
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bool IsContentOpaque() override;
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// PaintedLayer
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void InvalidateRegion(const nsIntRegion& aRegion) override {
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MOZ_CRASH("PaintedLayerMLGPU can't fill invalidated regions");
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}
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bool HasComponentAlpha() const {
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return !!mTextureOnWhite;
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}
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TextureSource* GetTexture() const {
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return mTexture;
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}
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TextureSource* GetTextureOnWhite() const {
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MOZ_ASSERT(HasComponentAlpha());
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return mTextureOnWhite;
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}
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gfx::Point GetDestOrigin() const;
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SamplerMode GetSamplerMode() {
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// Note that when resamping, we must break the texture coordinates into
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// no-repeat rects. When we have simple integer translations we can
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// simply wrap around the edge of the buffer texture.
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return MayResample()
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? SamplerMode::LinearClamp
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: SamplerMode::LinearRepeat;
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}
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void SetRenderRegion(LayerIntRegion&& aRegion) override;
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// To avoid sampling issues with complex regions and transforms, we
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// squash the visible region for PaintedLayers into a single draw
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// rect. RenderPasses should use this method instead of GetRenderRegion.
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const LayerIntRegion& GetDrawRects();
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MOZ_LAYER_DECL_NAME("PaintedLayerMLGPU", TYPE_PAINTED)
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void CleanupCachedResources();
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protected:
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void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
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bool OnPrepareToRender(FrameBuilder* aBuilder) override;
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// We override this to support tiling.
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void AssignToView(FrameBuilder* aBuilder,
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RenderViewMLGPU* aView,
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Maybe<gfx::Polygon>&& aGeometry) override;
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void AssignHighResTilesToView(FrameBuilder* aBuilder,
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RenderViewMLGPU* aView,
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TiledContentHost* aTileHost,
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const Maybe<gfx::Polygon>& aGeometry);
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// Helper for Assign*TilesToView.
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void AssignTileBufferToView(FrameBuilder* aBuilder,
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RenderViewMLGPU* aView,
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TiledLayerBufferComposite& aTiles,
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const LayerIntRegion& aCompositeRegion,
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const Maybe<gfx::Polygon>& aGeometry);
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void CleanupResources();
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private:
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RefPtr<ContentHost> mHost;
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RefPtr<TextureSource> mTexture;
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RefPtr<TextureSource> mTextureOnWhite;
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#ifndef MOZ_IGNORE_PAINT_WILL_RESAMPLE
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LayerIntRegion mDrawRects;
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#endif
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gfx::IntPoint mDestOrigin;
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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