Stage final fully reduced u64 addition operation using vectors. This will be the...

diff --git a/src/shaders/compute.wgsl b/src/shaders/compute.wgsl
index 16f2af182b91560b36129e79a8edd5d011b020af..17cfdd60a76b4a9300f768478fa098c5d09ca6db 100644 (file)
--- a/src/shaders/compute.wgsl
+++ b/src/shaders/compute.wgsl
@@ -57,6 +57,10 @@ fn main(@builtin(global_invocation_id) id: vec3<u32>) {
        * v[28u] = ~v[28u];
        * v[29u] = ~v[29u];
        */
+       var v_01: vec2<u32> = vec2(0xF2BDC900u, 0x6A09E667u);
+       var v_23: vec2<u32> = vec2(0x84CAA73Bu, 0xBB67AE85u);
+       var v_89: vec2<u32> = vec2(0xADE682D1u, 0x510E527Fu);
+       var v_1011: vec2<u32> = vec2(0x2B3E6C1Fu, 0x9B05688Cu);
        var v0: u32 = 0xF2BDC900u;
        var v1: u32 = 0x6A09E667u;
        var v2: u32 = 0x84CAA73Bu;
@@ -114,9 +118,14 @@ fn main(@builtin(global_invocation_id) id: vec3<u32>) {
        */
 
        // a = a + b
-       v1 = v1 + v9;
-       v1 = v1 + select(0u, 1u, v0 + v8 < v0);
-       v0 = v0 + v8;
+       // v1 = v1 + v9 + select(0u, 1u, v0 + v8 < v0);
+       // v0 = v0 + v8;
+       v_01 = v_01 + v_89 + select(vec2<u32>(0u), vec2<u32>(0u, 1u), v_01.x + v_89.x < v_01.x);
+       v0 = v_01.x;
+       v1 = v_01.y;
+       v8 = v_89.x;
+       v9 = v_89.y;
+
 
        // a = a + m[sigma[r][2*i+0]]
        o0 = v0 + m0;
@@ -184,11 +193,18 @@ fn main(@builtin(global_invocation_id) id: vec3<u32>) {
        */
 
        // a = a + b
-       o0 = v2 + v10;
-       o1 = v3 + v11;
-       o1 = o1 + select(0u, 1u, o0 < v2);
-       v2 = o0;
-       v3 = o1;
+       v_23 = v_23 + v_1011 + select(vec2<u32>(0u), vec2<u32>(0u, 1u), v_23.x + v_1011.x < v_23.x);
+       v2 = v_23.x;
+       v3 = v_23.y;
+       v10 = v_1011.x;
+       v11 = v_1011.y;
+
+       // o0 = v2 + v10;
+       // o1 = v3 + v11;
+       // o1 = o1 + select(0u, 1u, o0 < v2);
+       // v2 = o0;
+       // v3 = o1;
+
 
        // a = a + m[sigma[r][2*i+0]]
        o0 = v2 + m4;