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Partial Rendering refers to a rendering technique where only a portion of the scene or screen is updated, rather than redrawing the entire output. It is commonly used as a performance optimization strategy, focusing on redrawing only the regions that have changed, often called dirty regions. This implemenets with the LineSweep and SubDivision Mergion strategy. issue: https://github.com/thorvg/thorvg/issues/1747
92 lines
3.8 KiB
C++
92 lines
3.8 KiB
C++
/*
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* Copyright (c) 2020 - 2025 the ThorVG project. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _TVG_SW_RENDERER_H_
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#define _TVG_SW_RENDERER_H_
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#include "tvgRender.h"
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struct SwSurface;
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struct SwTask;
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struct SwCompositor;
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struct SwMpool;
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namespace tvg
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{
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class SwRenderer : public RenderMethod
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{
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public:
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bool preUpdate() override;
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RenderData prepare(const RenderShape& rshape, RenderData data, const Matrix& transform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag flags, bool clipper) override;
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RenderData prepare(RenderSurface* surface, RenderData data, const Matrix& transform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag flags) override;
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bool postUpdate() override;
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bool preRender() override;
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bool renderShape(RenderData data) override;
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bool renderImage(RenderData data) override;
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bool postRender() override;
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void dispose(RenderData data) override;
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RenderRegion region(RenderData data) override;
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void damage(const RenderRegion& region) override;
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RenderRegion viewport() override;
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bool viewport(const RenderRegion& vp) override;
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bool blend(BlendMethod method) override;
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ColorSpace colorSpace() override;
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const RenderSurface* mainSurface() override;
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bool clear() override;
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bool sync() override;
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bool target(pixel_t* data, uint32_t stride, uint32_t w, uint32_t h, ColorSpace cs);
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RenderCompositor* target(const RenderRegion& region, ColorSpace cs, CompositionFlag flags) override;
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bool beginComposite(RenderCompositor* cmp, MaskMethod method, uint8_t opacity) override;
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bool endComposite(RenderCompositor* cmp) override;
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void clearCompositors();
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void prepare(RenderEffect* effect, const Matrix& transform) override;
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bool region(RenderEffect* effect) override;
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bool render(RenderCompositor* cmp, const RenderEffect* effect, bool direct) override;
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void dispose(RenderEffect* effect) override;
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static SwRenderer* gen(uint32_t threads);
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static bool term();
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private:
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RenderDirtyRegion dirtyRegion;
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SwSurface* surface = nullptr; //active surface
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Array<SwTask*> tasks; //async task list
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Array<SwSurface*> compositors; //render targets cache list
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SwMpool* mpool; //private memory pool
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RenderRegion vport; //viewport
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bool sharedMpool; //memory-pool behavior policy
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bool fulldraw = true; //buffer is cleared (need to redraw full screen)
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SwRenderer();
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~SwRenderer();
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SwSurface* request(int channelSize, bool square);
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RenderData prepareCommon(SwTask* task, const Matrix& transform, const Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag flags);
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};
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}
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#endif /* _TVG_SW_RENDERER_H_ */
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