在 ENTER_FRAME 期间在多个 Program3D 之间切换的计算成本是否昂贵？
设置 Stage3D 的 Context3D 进行渲染时，在 Event 中的 循环？Program3D 之间切换是否昂贵/不好的做法.ENTER_FRAME
我手头没有例子，但我很想知道是否在这种情况下会使用程序之间的这种交替，以及帧速率是否会受到相当大的影响。
When setting up a Stage3D's Context3D for rendering, is it expensive / bad practice to switch between Program3D's in an Event.ENTER_FRAME cycle?
I don't have an example at hand, but I'm curious to know if there's such situations where this alternation between programs would be used and if the frame-rate would suffer considerably.
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与之相关的是一些成本，但我不认为它很昂贵。当然，如果您的场景中有多个着色器，则您将必须在每一帧的 Program3D 之间进行切换 - 您只是不想这样做超出必要的范围。因此，解决方案是渲染特定着色器的所有网格，然后转到下一个着色器，依此类推。
There is some cost associated with it, but I don't think I'd call it expensive. Of course, if you have more than one shader in your scene, you're going to have to switch between Program3Ds every frame - you just wouldn't want to do that more than necessary. So, the solution is to render all the meshes for a particular shader, then move on to the next shader, etc.