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便重载工作?我期望的用法是:
// 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