Kie*_*etz 1 overloading renderscript
我想重载一个RenderScript内核:
/* donothing.rs */
uchar4 __attribute__((kernel, overloadable)) root (uchar4 in) {
  return in;
}
float4 __attribute__((kernel, overloadable)) root (float4 in) {
  return in;
}
但是,这会生成同名的Java方法:
// ScriptC_donothing.java:95
public void forEach_root(Allocation ain, Allocation aout, Script.LaunchOptions sc) {
    // check ain
    if (!ain.getType().getElement().isCompatible(__U8_4)) {
        throw new RSRuntimeException("Type mismatch with U8_4!");
    }
    ...
// ScriptC_donothing.java:225
public void forEach_root(Allocation ain, Allocation aout, Script.LaunchOptions sc) {
    // check ain
    if (!ain.getType().getElement().isCompatible(__F32_4)) {
        throw new RSRuntimeException("Type mismatch with F32_4!");
    }
    ...
有没有办法编写内核以使重载有效?我预期的用法是:
// DoNothingActivity.java
mInAllocation = Allocation.createFromBitmap(mRS, ...
mOutAllocation = Allocation.createTyped(mRS, mInAllocation.getType());
mScript = new ScriptC_donothing(mRS);
mScript.forEach_root(mInAllocation, mOutAllocation);
// calls uchar4 kernel