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-rw-r--r--src/shader.wgsl208
1 files changed, 208 insertions, 0 deletions
diff --git a/src/shader.wgsl b/src/shader.wgsl
new file mode 100644
index 0000000..39b53d5
--- /dev/null
+++ b/src/shader.wgsl
@@ -0,0 +1,208 @@
+struct SHA256_CTX {
+ data : array<u32, 64>,
+ datalen : u32,
+ bitlen : array<u32, 2>,
+ state : array<u32, 8>,
+ info : u32,
+};
+
+@group(0) @binding(0) var<storage, read> inputs : array<u32>;
+@group(0) @binding(1) var<storage, read> inputSizes : array<u32>;
+@group(0) @binding(2) var<storage, read_write> results : array<u32>;
+
+const SHA256_BLOCK_SIZE = 32;
+const INPUT_BLOCK_SIZE = 64;
+const INPUT_BLOCKS_MAX = 8;
+const INPUT_SLOT_SIZE = INPUT_BLOCK_SIZE * INPUT_BLOCKS_MAX / 4;
+
+const k = array<u32, 64> (
+ 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5,
+ 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174,
+ 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da,
+ 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967,
+ 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85,
+ 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,0xd192e819,0xd6990624,0xf40e3585,0x106aa070,
+ 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3,
+ 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
+);
+
+fn ROTLEFT(a : u32, b : u32) -> u32{return (((a) << (b)) | ((a) >> (32-(b))));}
+fn ROTRIGHT(a : u32, b : u32) -> u32{return (((a) >> (b)) | ((a) << (32-(b))));}
+
+fn CH(x : u32, y : u32, z : u32) -> u32{return (((x) & (y)) ^ (~(x) & (z)));}
+fn MAJ(x : u32, y : u32, z : u32) -> u32{return (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)));}
+fn EP0(x : u32) -> u32{return (ROTRIGHT(x,2) ^ ROTRIGHT(x,13) ^ ROTRIGHT(x,22));}
+fn EP1(x : u32) -> u32{return (ROTRIGHT(x,6) ^ ROTRIGHT(x,11) ^ ROTRIGHT(x,25));}
+fn SIG0(x : u32) -> u32{return (ROTRIGHT(x,7) ^ ROTRIGHT(x,18) ^ ((x) >> 3));}
+fn SIG1(x : u32) -> u32{return (ROTRIGHT(x,17) ^ ROTRIGHT(x,19) ^ ((x) >> 10));}
+
+fn sha256_transform(ctx : ptr<function, SHA256_CTX>)
+{
+ var a : u32;
+ var b : u32;
+ var c : u32;
+ var d : u32;
+ var e : u32;
+ var f : u32;
+ var g : u32;
+ var h : u32;
+ var i : u32 = 0;
+ var j : u32 = 0;
+ var t1 : u32;
+ var t2 : u32;
+ var m : array<u32, 64> ;
+
+
+ while(i < 16) {
+ m[i] = ((*ctx).data[j] << 24) | ((*ctx).data[j + 1] << 16) | ((*ctx).data[j + 2] << 8) | ((*ctx).data[j + 3]);
+ i++;
+ j += 4;
+ }
+
+ while(i < 64) {
+ m[i] = SIG1(m[i - 2]) + m[i - 7] + SIG0(m[i - 15]) + m[i - 16];
+ i++;
+ }
+
+ a = (*ctx).state[0];
+ b = (*ctx).state[1];
+ c = (*ctx).state[2];
+ d = (*ctx).state[3];
+ e = (*ctx).state[4];
+ f = (*ctx).state[5];
+ g = (*ctx).state[6];
+ h = (*ctx).state[7];
+
+ i = 0;
+ for (; i < 64; i++) {
+ t1 = h + EP1(e) + CH(e,f,g) + k[i] + m[i];
+ t2 = EP0(a) + MAJ(a,b,c);
+ h = g;
+ g = f;
+ f = e;
+ e = d + t1;
+ d = c;
+ c = b;
+ b = a;
+ a = t1 + t2;
+ }
+
+
+ (*ctx).state[0] += a;
+ (*ctx).state[1] += b;
+ (*ctx).state[2] += c;
+ (*ctx).state[3] += d;
+ (*ctx).state[4] += e;
+ (*ctx).state[5] += f;
+ (*ctx).state[6] += g;
+ (*ctx).state[7] += h;
+}
+
+
+fn sha256_update(ctx : ptr<function, SHA256_CTX>, len : u32, index: u32)
+{
+ for (var i :u32 = (INPUT_SLOT_SIZE * index); i < ((INPUT_SLOT_SIZE*index)+len); i++) {
+ (*ctx).data[(*ctx).datalen] = inputs[i];
+ (*ctx).datalen++;
+ if ((*ctx).datalen == 64) {
+ sha256_transform(ctx);
+
+ if ((*ctx).bitlen[0] > 0xffffffff - (512)){
+ (*ctx).bitlen[1]++;
+ }
+ (*ctx).bitlen[0] += 512;
+
+
+ (*ctx).datalen = 0;
+ }
+ }
+}
+
+fn sha256_final(ctx : ptr<function, SHA256_CTX>, hash: ptr<function, array<u32, 8>> )
+{
+ var i : u32 = (*ctx).datalen;
+
+ if ((*ctx).datalen < 56) {
+ (*ctx).data[i] = 0x80;
+ i++;
+ while (i < 56){
+ (*ctx).data[i] = 0x00;
+ i++;
+ }
+ }
+ else {
+ (*ctx).data[i] = 0x80;
+ i++;
+ while (i < 64){
+ (*ctx).data[i] = 0x00;
+ i++;
+ }
+ sha256_transform(ctx);
+ for (var i = 0; i < 56 ; i++) {
+ (*ctx).data[i] = 0;
+ }
+ }
+
+ if ((*ctx).bitlen[0] > 0xffffffff - (*ctx).datalen * 8) {
+ (*ctx).bitlen[1]++;
+ }
+ (*ctx).bitlen[0] += (*ctx).datalen * 8;
+
+
+ (*ctx).data[63] = (*ctx).bitlen[0];
+ (*ctx).data[62] = (*ctx).bitlen[0] >> 8;
+ (*ctx).data[61] = (*ctx).bitlen[0] >> 16;
+ (*ctx).data[60] = (*ctx).bitlen[0] >> 24;
+ (*ctx).data[59] = (*ctx).bitlen[1];
+ (*ctx).data[58] = (*ctx).bitlen[1] >> 8;
+ (*ctx).data[57] = (*ctx).bitlen[1] >> 16;
+ (*ctx).data[56] = (*ctx).bitlen[1] >> 24;
+ sha256_transform(ctx);
+
+ for (i = 0; i < 8; i++) {
+ (*hash)[i] = (*ctx).state[i];
+
+ }
+ // for (i = 0; i < 4; i++) {
+ // (*hash)[i] = ((*ctx).state[0] >> (24 - i * 8)) & 0x000000ff;
+ // (*hash)[i + 4] = ((*ctx).state[1] >> (24 - i * 8)) & 0x000000ff;
+ // (*hash)[i + 8] = ((*ctx).state[2] >> (24 - i * 8)) & 0x000000ff;
+ // (*hash)[i + 12] = ((*ctx).state[3] >> (24 - i * 8)) & 0x000000ff;
+ // (*hash)[i + 16] = ((*ctx).state[4] >> (24 - i * 8)) & 0x000000ff;
+ // (*hash)[i + 20] = ((*ctx).state[5] >> (24 - i * 8)) & 0x000000ff;
+ // (*hash)[i + 24] = ((*ctx).state[6] >> (24 - i * 8)) & 0x000000ff;
+ // (*hash)[i + 28] = ((*ctx).state[7] >> (24 - i * 8)) & 0x000000ff;
+ // }
+}
+
+@compute @workgroup_size(1, 1,1)
+fn main(@builtin(global_invocation_id) global_id : vec3<u32>) {
+ var index = global_id.x;
+ let array_length = arrayLength(&inputSizes);
+ if (index >= array_length) {
+ return;
+ }
+ var ctx : SHA256_CTX;
+ var buf : array<u32, 8>;
+
+ // CTX INIT
+ ctx.datalen = 0;
+ ctx.bitlen[0] = 0;
+ ctx.bitlen[1] = 0;
+ ctx.state[0] = 0x6a09e667;
+ ctx.state[1] = 0xbb67ae85;
+ ctx.state[2] = 0x3c6ef372;
+ ctx.state[3] = 0xa54ff53a;
+ ctx.state[4] = 0x510e527f;
+ ctx.state[5] = 0x9b05688c;
+ ctx.state[6] = 0x1f83d9ab;
+ ctx.state[7] = 0x5be0cd19;
+
+ sha256_update(&ctx, inputSizes[index], index);
+ sha256_final(&ctx, &buf);
+
+
+ for (var i=(index * SHA256_BLOCK_SIZE); i < ((index+1) * SHA256_BLOCK_SIZE); i++) {
+ results[i] = buf[i];
+ }
+}
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-10 10:22:07 +0000