From: Chris Duncan <chris@zoso.dev>
Date: Tue, 21 Jan 2025 17:08:11 +0000 (-0800)
Subject: Reduce loop iteration by reading 64 bits at a time into UBO.
X-Git-Tag: v3.0.0~81
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=7fb1b2b439f16b40a142c24b4a0665fd13839a55;p=nano-pow.git

Reduce loop iteration by reading 64 bits at a time into UBO.
---

diff --git a/src/classes/gpu.ts b/src/classes/gpu.ts
index caf2ad1..8fb469a 100644
--- a/src/classes/gpu.ts
+++ b/src/classes/gpu.ts
@@ -134,9 +134,9 @@ export class NanoPowGpu {
 		// Set up uniform buffer object
 		// Note: u32 size is 4, but total alignment must be multiple of 16
 		const uboView = new DataView(new ArrayBuffer(48))
-		for (let i = 0; i < 64; i += 8) {
-			const uint32 = hash.slice(i, i + 8)
-			uboView.setUint32(i / 2, parseInt(uint32, 16))
+		for (let i = 0; i < 64; i += 16) {
+			const u64 = hash.slice(i, i + 16)
+			uboView.setBigUint64(i / 2, BigInt(`0x${u64}`))
 		}
 		uboView.setBigUint64(32, seed, true)
 		uboView.setUint32(40, threshold, true)