Runtime dynamic size array/list/vector of arbitrary type in callable/kernel about luisacompute HOT 2 CLOSED

Hi, @MaxwellFang

You may use Local<T> in <luisa/dsl/local.h> which can be constructed with runtime-specified lengths. The element type T can be any DSL type, i.e., scalars, vectors, matrices, or POD structures reflected by LUISA_STRUCT.

Example:

namespace some {
struct Test {
  float a;
  uint2 b;
};
} // namespace some

// reflect the plain C structure
LUISA_STRUCT(some::Test, a, b) {};

int main() {
  uint n = some_runtime_value();
  Kernel1D kernel = [] {
    Local<Test> x{n}; // construct an array with n elements of struct Test
  };
}

from luisacompute.

Hi, @MaxwellFang

You may use Local<T> in <luisa/dsl/local.h> which can be constructed with runtime-specified lengths. The element type T can be any DSL type, i.e., scalars, vectors, matrices, or POD structures reflected by LUISA_STRUCT.

Example:

namespace some {
struct Test {
  float a;
  uint2 b;
};
} // namespace some

// reflect the plain C structure
LUISA_STRUCT(some::Test, a, b) {};

int main() {
  uint n = some_runtime_value();
  Kernel1D kernel = [] {
    Local<Test> x{n}; // construct an array with n elements of struct Test
  };
}

My struct is something like

struct Vertex {
    Float3 position;
    SampledSpectrum beta;
    ....
};

which the variables DSL types but the struct itself is not reflected by LUISA_STRUCT. So I was wondering if that would be the same.

from luisacompute.