如何执行昂贵的渲染 [英] How to perform Expensive Rendering

问题描述

在许多情况下，渲染需要大量的计算能力。因此，可能会发生由于UI需要等待渲染完成而跳过帧的情况。

Rendering takes a lot of computational power in many cases. Thus, it can happen that frames are being skipped as the UI needs to wait for the rendering to finish.

我想知道如何实现渲染或绘画异步，即孤立。

I was wondering how I could implement rendering or painting asynchronously, i.e. isolated.

类似于 compute 不是一个选择，因为 SendPort 仅适用于原始类型，绘画需要 PaintingContext 或 画布 。

Functions like compute are not an option because SendPort only works with primitive types and painting will require a PaintingContext or Canvas.

有些Flutter插件需要大量渲染。因此，我认为我可以在 video_player 插件，但它使用 Texture ，即不在Dart中渲染 。

There are Flutter plugins that require heavy rendering. Hence, I thought that I could find answers in the video_player plugin, but it uses Texture, i.e. does not render in Dart.

我想知道是否有任何成语或示例

I am wondering if there are any idioms or example implementations regarding this.

我想知道如何实现渲染，可以看看 FlareActor 。原来他们像我一样处理绘画。现在我想知道为什么我遇到瓶颈而Flare却没有。有优化绘画的指南吗？

I you are wondering how I implement rendering, you can take a look at FlareActor. It turns out that they handle painting exactly like I do. Now I am wondering why I am running into bottlenecks and Flare is not. Are there any guides on optimizing painting?

推荐答案

我通过将所有需要的像素写入来解决了问题BMP 文件格式，然后使用 Canvas.drawImage 代替，因为Flutter画布无法处理许多 Canvas 操作： https://stackoverflow.com/a/55855735/6509751

I solved it by writing all my required pixels to the BMP file format and then using Canvas.drawImage instead as the Flutter canvas cannot handle many Canvas operations: https://stackoverflow.com/a/55855735/6509751

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