Hi,
In a metal shader I have a user-defined struct with a square brackets operator. This is a simplified version of it:
struct MyData
{
float data[12];
float operator[](int i) const
{
return data[i];
}
};
I pass a device buffer of that type in a compute kernel function:
device const MyData* myDataBuffer
Using the operator with a thread-space object works fine:
MyData data_object = myDataBuffer[0];
float x = data_object[0]; // ok
..but trying to use it with the device-space buffer fails:
float x = myDataBuffer[0][0]; // compilation error
No viable overloaded operator[] for type 'const device MyData'
Candidate function not viable: address space mismatch in 'this' argument ('const device MyData'), parameter type must be 'const MyData'
For other operators I could define the function outside the struct and pass a reference to a device-memory object but the function for the square brackets operator can only be a member function.
Am I missing something that could make the above statement compile?