Renderscript 如何从 2d 浮点数组初始化缓冲区以进行分配

Question

I read the Android documentation about allocations and I also used them in few renderscripts. But there is something that still I couldn't understand.

If I create an allocation with createTyped() I create the structure but not the buffer, actually until now I used this method for input allocations and the buffer is then assigned when it does ioReceive() . To create an output allocation usually I use createFromBitmap() because this method also allocates the buffer. Otherwise to assign the buffer I can use setSurface() .

But now I need an output allocation for a 2D float array, how can initialize and assign the buffer for such allocation?

Answer 1

您可以使用 createTyped() 创建分配，然后通过调用 copyFrom(myfloatarray) 对其进行初始化，其中 myfloatarray 是 Java 中的浮点值数组。