return;
}
`
-
-
-
-/**
-* The original NanoPow compute shader derived from nano-webgl-pow is saved in
-* this comment for reference purposes. It is not quite as performant as the
-* inlined version exported above.
-*/
-
-/*
-struct UBO {
- blockhash: array<vec4<u32>, 2>,
- random: u32,
- threshold: u32
-};
-@group(0) @binding(0) var<uniform> ubo: UBO;
-
-struct WORK {
- nonce: vec2<u32>,
- found: atomic<u32>
-};
-@group(0) @binding(1) var<storage, read_write> work: WORK;
-
-// Defined separately from uint v[32] below as the original value is required
-// to calculate the second uint32 of the digest for threshold comparison
-const BLAKE2B_IV32_1: u32 = 0x6A09E667u;
-
-// These are offsets into the input data buffer for each mixing step.
-// They are multiplied by 2 from the original SIGMA values in
-// the C reference implementation, which refered to uint64s.
-
-const SIGMA82: array<u32, 192> = array<u32, 192>(
- 0u,2u,4u,6u,8u,10u,12u,14u,16u,18u,20u,22u,24u,26u,28u,30u,
- 28u,20u,8u,16u,18u,30u,26u,12u,2u,24u,0u,4u,22u,14u,10u,6u,
- 22u,16u,24u,0u,10u,4u,30u,26u,20u,28u,6u,12u,14u,2u,18u,8u,
- 14u,18u,6u,2u,26u,24u,22u,28u,4u,12u,10u,20u,8u,0u,30u,16u,
- 18u,0u,10u,14u,4u,8u,20u,30u,28u,2u,22u,24u,12u,16u,6u,26u,
- 4u,24u,12u,20u,0u,22u,16u,6u,8u,26u,14u,10u,30u,28u,2u,18u,
- 24u,10u,2u,30u,28u,26u,8u,20u,0u,14u,12u,6u,18u,4u,16u,22u,
- 26u,22u,14u,28u,24u,2u,6u,18u,10u,0u,30u,8u,16u,12u,4u,20u,
- 12u,30u,28u,18u,22u,6u,0u,16u,24u,4u,26u,14u,2u,8u,20u,10u,
- 20u,4u,16u,8u,14u,12u,2u,10u,30u,22u,18u,28u,6u,24u,26u,0u,
- 0u,2u,4u,6u,8u,10u,12u,14u,16u,18u,20u,22u,24u,26u,28u,30u,
- 28u,20u,8u,16u,18u,30u,26u,12u,2u,24u,0u,4u,22u,14u,10u,6u
-);
-
-// 64-bit unsigned addition within the compression buffer
-// Sets v[i,i+1] += b
-// LSb is the Least-Significant (32) Bits of b
-// MSb is the Most-Significant (32) Bits of b
-// If LSb overflows, increment MSb operand
-fn add_uint64 (v: ptr<function, array<u32, 32>>, i: u32, LSb: u32, MSb: u32) {
- var o0: u32 = (*v)[i] + LSb;
- var o1: u32 = (*v)[i+1u] + MSb;
- if ((*v)[i] > 0xFFFFFFFFu - LSb) {
- o1 = o1 + 1u;
- }
- (*v)[i] = o0;
- (*v)[i+1u] = o1;
-}
-
-// G Mixing function
-fn G (v: ptr<function, array<u32, 32>>, m: ptr<function, array<u32, 16>>, a: u32, b: u32, c: u32, d: u32, ix: u32, iy: u32) {
- add_uint64(v, a, (*v)[b], (*v)[b+1u]);
- add_uint64(v, a, (*m)[ix], (*m)[ix+1u]);
-
- // v[d,d+1] = (v[d,d+1] xor v[a,a+1]) rotated to the right by 32 bits
- var xor0: u32 = (*v)[d] ^ (*v)[a];
- var xor1: u32 = (*v)[d+1u] ^ (*v)[a+1u];
- (*v)[d] = xor1;
- (*v)[d+1u] = xor0;
-
- add_uint64(v, c, (*v)[d], (*v)[d+1u]);
-
- // v[b,b+1] = (v[b,b+1] xor v[c,c+1]) rotated right by 24 bits
- xor0 = (*v)[b] ^ (*v)[c];
- xor1 = (*v)[b+1u] ^ (*v)[c+1u];
- (*v)[b] = (xor0 >> 24u) ^ (xor1 << 8u);
- (*v)[b+1u] = (xor1 >> 24u) ^ (xor0 << 8u);
-
- add_uint64(v, a, (*v)[b], (*v)[b+1u]);
- add_uint64(v, a, (*m)[iy], (*m)[iy+1u]);
-
- // v[d,d+1] = (v[d,d+1] xor v[a,a+1]) rotated right by 16 bits
- xor0 = (*v)[d] ^ (*v)[a];
- xor1 = (*v)[d+1u] ^ (*v)[a+1u];
- (*v)[d] = (xor0 >> 16u) ^ (xor1 << 16u);
- (*v)[d+1u] = (xor1 >> 16u) ^ (xor0 << 16u);
-
- add_uint64(v, c, (*v)[d], (*v)[d+1u]);
-
- // v[b,b+1] = (v[b,b+1] xor v[c,c+1]) rotated right by 63 bits
- xor0 = (*v)[b] ^ (*v)[c];
- xor1 = (*v)[b+1u] ^ (*v)[c+1u];
- (*v)[b] = (xor1 >> 31u) ^ (xor0 << 1u);
- (*v)[b+1u] = (xor0 >> 31u) ^ (xor1 << 1u);
-}
-
-// Main compute function
-// 8-byte work is split into two 4-byte u32. Low 4 bytes are random u32 from
-// UBO. High 4 bytes are the random value XOR'd with index of each thread.
-@compute @workgroup_size(${this.workload})
-fn main(
- @builtin(workgroup_id) workgroup_id: vec3<u32>,
- @builtin(local_invocation_id) local_id: vec3<u32>
-) {
- if (atomicLoad(&work.found) != 0u) { return; }
-
- let threshold: u32 = ubo.threshold;
-
- // Flatten 3D workgroup and local identifiers into u32 for each thread
- var id: u32 = ((workgroup_id.x & 0xff) << 24) |
- ((workgroup_id.y & 0xff) << 16) |
- ((workgroup_id.z & 0xff) << 8) |
- (local_id.x & 0xff);
-
- // Initialize (nonce||blockhash) concatenation
- var m: array<u32, 16>;
- m[0u] = ubo.random;
- m[1u] = ubo.random ^ id;
- m[2u] = ubo.blockhash[0u].x;
- m[3u] = ubo.blockhash[0u].y;
- m[4u] = ubo.blockhash[0u].z;
- m[5u] = ubo.blockhash[0u].w;
- m[6u] = ubo.blockhash[1u].x;
- m[7u] = ubo.blockhash[1u].y;
- m[8u] = ubo.blockhash[1u].z;
- m[9u] = ubo.blockhash[1u].w;
-
-
- // Compression buffer intialized to 2 instances of initialization vector
- // The following values have been modified from the BLAKE2B_IV:
- // OUTLEN is constant 8 bytes
- // v[0u] ^= 0x01010000u ^ uint(OUTLEN);
- // INLEN is constant 40 bytes: work value (8) + block hash (32)
- // v[24u] ^= uint(INLEN);
- // It is always the "last" compression at this INLEN
- // v[28u] = ~v[28u];
- // v[29u] = ~v[29u];
- var v = array<u32, 32>(
- 0xF2BDC900u, 0x6A09E667u, 0x84CAA73Bu, 0xBB67AE85u,
- 0xFE94F82Bu, 0x3C6EF372u, 0x5F1D36F1u, 0xA54FF53Au,
- 0xADE682D1u, 0x510E527Fu, 0x2B3E6C1Fu, 0x9B05688Cu,
- 0xFB41BD6Bu, 0x1F83D9ABu, 0x137E2179u, 0x5BE0CD19u,
- 0xF3BCC908u, 0x6A09E667u, 0x84CAA73Bu, 0xBB67AE85u,
- 0xFE94F82Bu, 0x3C6EF372u, 0x5F1D36F1u, 0xA54FF53Au,
- 0xADE682F9u, 0x510E527Fu, 0x2B3E6C1Fu, 0x9B05688Cu,
- 0x04BE4294u, 0xE07C2654u, 0x137E2179u, 0x5BE0CD19u
- );
-
- // Twelve rounds of mixing as part of BLAKE2b compression step
- for (var r: u32 = 0u; r < 12u; r = r + 1u) {
- G(&v, &m, 0u, 8u, 16u, 24u, SIGMA82[r * 16u + 0u], SIGMA82[r * 16u + 1u]);
- G(&v, &m, 2u, 10u, 18u, 26u, SIGMA82[r * 16u + 2u], SIGMA82[r * 16u + 3u]);
- G(&v, &m, 4u, 12u, 20u, 28u, SIGMA82[r * 16u + 4u], SIGMA82[r * 16u + 5u]);
- G(&v, &m, 6u, 14u, 22u, 30u, SIGMA82[r * 16u + 6u], SIGMA82[r * 16u + 7u]);
- G(&v, &m, 0u, 10u, 20u, 30u, SIGMA82[r * 16u + 8u], SIGMA82[r * 16u + 9u]);
- G(&v, &m, 2u, 12u, 22u, 24u, SIGMA82[r * 16u + 10u], SIGMA82[r * 16u + 11u]);
- G(&v, &m, 4u, 14u, 16u, 26u, SIGMA82[r * 16u + 12u], SIGMA82[r * 16u + 13u]);
- G(&v, &m, 6u, 8u, 18u, 28u, SIGMA82[r * 16u + 14u], SIGMA82[r * 16u + 15u]);
- }
-
- // Set nonce if it passes the threshold and no other thread has set it
- if ((BLAKE2B_IV32_1 ^ v[1u] ^ v[17u]) > threshold && atomicLoad(&work.found) == 0u) {
- atomicStore(&work.found, 1u);
- work.nonce.x = m[0];
- work.nonce.y = m[1];
- }
- return;
-}
-*/
projects / libnemo.git / commitdiff