canvas上下文属性可以防止硬件加速渲染？ [英] canvas context property to PREVENT hardware accelerated rendering?

问题描述

是否存在画布上下文的设置，该设置将阻止其渲染器使用硬件加速？
我想在没有它的情况下进行渲染，但是不想让用户从其chrome浏览器中禁用它，因为这是违反直觉的，并且不能提供无缝的工作流程体验。

Is there a setting for the canvas context that will prevent its renderer from using hardware acceleration? I want to render without it, but don't want to ask the user to disable it from their chrome browser since that is counter-intuitive and doesn't provide a seamless workflow experience.

推荐答案

简短答案：

否，但至少那些正在开发铬的人正在考虑。 MDN：CanvasContext2D 在该页面中，您将找到一个内部称为 demote 的方法。

Short Answer:

No, but it is at least being considered by those developing Chromium. MDN: CanvasContext2D In the page you'll find an internal method called demote.

当前没有任何标准标准化，并且是2D上下文中唯一可用来执行此操作的方法（ demote ）仅适用于Chrome-Context（铬）。

There's nothing standaradized currently, and the only method available from a 2D context to perform this (demote) is Chrome-Context (chromium) only.

每个 MDN ：

CanvasRenderingContext2D.demote（）
当前使用硬件加速后端回退到软件后端的上下文。所有状态都应保留。

CanvasRenderingContext2D.demote() This causes a context that is currently using a hardware-accelerated backend to fallback to a software one. All state should be preserved.

很明显，他们已经考虑过了，但是我不希望它很快被采用。因为它可能不是讨论/痛点的优先主题。此外，不幸的是，由于它是Chrome特定的实现，并且我们正在改变浏览器本身的行为方式，因此无法通过填充或填充将功能添加到其他浏览器中。

It's apparent they've considered it, but I wouldn't expect it to be adopted any time soon as it is probably not a prioritized topic of discussion/pain-point. Furthermore, unfortunately since it's a Chrome specific implementation and we're dealing with altering the way the Browser itself behaves, there isn't a way to patch this functionality into other Browsers through polyfilling or shimming.

技术答案是 也许 。这取决于您要定位的浏览器是否支持即将（或可能永远不会）标准化的非标准化功能，以及您是否愿意不支持任何其他浏览器。话虽如此，务实的答案是否

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