taichi-dev/taichi

[Lang] Make `@ti.func` callable from Python-scope, or `@ti.kfunc` if we're afraid of breaking API

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#1.379 aberto em 2 de jul. de 2020

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feature requestgood first issuepython

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Description

Concisely describe the proposed feature It would be convenient to unify these two concepts, both for API clarity and reducing user learning obstacle. This issue will be just a begining of this refactor.

Describe the solution you'd like (if any) We may first add @ti.kfunc as a experimental one, then replace @ti.func when it's mature and battle-tested.

  1. When @ti.func called from Python-scope will be translated into a minimal kernel that executes it, and exit.
  2. Add @ti.kfunc that create both a @ti.func and @ti.kernel, when called from corresponding scope, call func/kernel.
def kfunc(foo):
  func_foo = ti.func(foo)
  kernel_foo = ti.kernel(foo)
  @functools.wraps(foo)
  def wrapped(*args, **kwargs):
    if impl.inside_kernel():
      func_foo(*args, **kwargs)
    else:
      kernel_foo(*args, **kwargs)

Additional comments @yuanming-hu @k-ye WDYT? Inputs are welcome!

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