1#version 310 es
2layout(local_size_x = 1) in;
3
4layout(std430, binding = 0) readonly buffer SSBO
5{
6    mat4 mvp;
7    vec4 in_data[];
8};
9
10layout(std430, binding = 1) writeonly buffer SSBO2
11{
12    vec4 out_data[];
13};
14
15void main()
16{
17    uint ident = gl_GlobalInvocationID.x;
18    vec4 idat = in_data[ident];
19
20    int k = 0;
21
22    // Continue with side effects.
23    while (++k < 10)
24    {
25        idat *= 2.0;
26        k++;
27    }
28
29    // Again used here ...
30    for (uint i = 0u; i < 16u; i++, k++)
31        for (uint j = 0u; j < 30u; j++)
32            idat = mvp * idat;
33
34    do
35    {
36        k++;
37    } while (k > 10);
38    out_data[ident] = idat;
39}
40
41