зеркало из https://github.com/mozilla/gecko-dev.git
101 строка
2.5 KiB
C++
101 строка
2.5 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_layers_mlgpu_MaskOperation_h
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#define mozilla_gfx_layers_mlgpu_MaskOperation_h
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#include "mozilla/RefPtr.h"
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#include "mozilla/gfx/Rect.h"
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#include "SharedBufferMLGPU.h"
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#include <vector>
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namespace mozilla {
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namespace layers {
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class FrameBuilder;
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class Layer;
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class MLGDevice;
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class MLGRenderTarget;
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class MLGTexture;
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class TextureSource;
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class MaskOperation
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{
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NS_INLINE_DECL_REFCOUNTING(MaskOperation)
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public:
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// For when the exact texture is known ahead of time.
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MaskOperation(FrameBuilder* aBuilder, MLGTexture* aSource);
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// Return the mask rectangle in screen coordinates. This function takes a
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// layer because a single-texture mask operation is not dependent on a
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// specific mask transform. (Multiple mask layer operations are, and they
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// ignore the layer parameter).
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virtual gfx::Rect ComputeMaskRect(Layer* aLayer) const;
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MLGTexture* GetTexture() const {
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return mTexture;
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}
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bool IsEmpty() const {
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return !mTexture;
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}
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protected:
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explicit MaskOperation(FrameBuilder* aBuilder);
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virtual ~MaskOperation();
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protected:
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RefPtr<MLGTexture> mTexture;
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};
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struct MaskTexture
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{
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MaskTexture() : mSource(nullptr)
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{}
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MaskTexture(const gfx::Rect& aRect, TextureSource* aSource)
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: mRect(aRect), mSource(aSource)
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{}
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bool operator <(const MaskTexture& aOther) const;
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gfx::Rect mRect;
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RefPtr<TextureSource> mSource;
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};
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typedef std::vector<MaskTexture> MaskTextureList;
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class MaskCombineOperation final : public MaskOperation
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{
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public:
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explicit MaskCombineOperation(FrameBuilder* aBuilder);
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~MaskCombineOperation() override;
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void Init(const MaskTextureList& aTextures);
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void PrepareForRendering();
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void Render();
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gfx::Rect ComputeMaskRect(Layer* aLayer) const override {
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return mArea;
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}
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private:
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FrameBuilder* mBuilder;
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gfx::Rect mArea;
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MaskTextureList mTextures;
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RefPtr<MLGRenderTarget> mTarget;
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std::vector<VertexBufferSection> mInputBuffers;
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};
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RefPtr<TextureSource> GetMaskLayerTexture(Layer* aLayer);
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void AppendToMaskTextureList(MaskTextureList& aList, Layer* aLayer);
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} // namespace layers
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} // namespace mozilla
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#endif // mozilla_gfx_layers_mlgpu_MaskOperation_h
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