blob: 0bcb02c91d0304f819a840207e2300238efae9f1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
layout(local_size_x=1) in;
uniform uint elements;
layout(binding=0, std430) buffer sumBuffer
{
uint sum[];
};
layout(binding=1, std430) buffer offsetBuffer
{
uint offset[];
};
uint ceilquotient(uint a, uint b)
{
return (a+b-1u)/b;
}
void main(void)
{
uint id=gl_GlobalInvocationID.x;
uint m=ceilquotient(elements,gl_NumWorkGroups.x);
uint row=m*id;
uint col=min(m,elements-row);
uint stop=row+col;
uint Sum=offset[row];
for(uint i=row+1u; i < stop; ++i)
Sum += offset[i];
sum[id]=Sum;
}
|