1  #version 450
 2  
 3  #include "dequant_head.comp"
 4  
 5  layout(local_size_x = 256, local_size_y = 1, local_size_z = 1) in;
 6  
 7  layout (binding = 0) readonly buffer A {block_q5_0 data_a[];};
 8  layout (binding = 1) writeonly buffer D {D_TYPE data_b[];};
 9  
10  void main() {
11      const uint i = gl_WorkGroupID.x * 4 + gl_LocalInvocationID.x / 64;
12  
13      const uint tid = gl_LocalInvocationID.x % 64;
14      const uint il  = tid/32;
15      const uint ir  = tid%32;
16      const uint ib = 32*i + ir;
17      if (ib >= p.nel / 32) {
18          return;
19      }
20  
21      const uint b_idx = 1024*i + 32*ir + 8*il;
22  
23      const float d = float(data_a[ib].d);
24      const uint qh = uint(data_a[ib].qh[1]) << 16 | data_a[ib].qh[0];
25  
26      const uint q_idx = 8*il;
27  
28      [[unroll]] for (uint l = 0; l < 8; ++l) {
29          const uint iqs = q_idx + l;
30          const uint vui = uint(data_a[ib].qs[iqs]);
31          data_b[b_idx + l +  0] = D_TYPE(d * (((vui & 0xF) | (((qh >> iqs) << 4) & 0x10)) - 16.0f));
32          data_b[b_idx + l + 16] = D_TYPE(d * (((vui >>  4) | ((qh >> (iqs + 12)) & 0x10)) - 16.0f));
33      }
34  }