Access vector type OpenCL

Question

I have a variable whithin a kernel like:

int16 element;

I would like to know if there is a way to adress the third int in element like

Answer 1

AMD recommends getting vector components this way:

Put the array of masks into an OpenCl constant buffer:

cl_uint const_masks[4][4] =
{
    {0xffffffff, 0, 0, 0},
    {0, 0xffffffff, 0, 0},
    {0, 0, 0xffffffff, 0},
    {0, 0, 0, 0xffffffff},
}

Inside the kernel write something like this:

uint getComponent(uint4 a, int index, __constant uint4 * const_masks)
{
    uint b;
    uint4 masked_a = a & const_masks[index];
    b = masked_a.s0 + masked_a.s1 + masked_a.s2 + masked_a.s3;
    return (b);
}

__kernel void foo(…, __constant uint4 * const_masks, …)
{
    uint4 a = ….;
    int index = …;
    uint b = getComponent(a, index, const_masks);
}