From: Chris Duncan <chris@zoso.dev>
Date: Tue, 22 Apr 2025 14:10:53 +0000 (-0700)
Subject: Fix threshold check when high bits are equal to difficulty and low bits must be checked.
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=ed76063d9d9759d406033cdd593e1f28b76f0d22;p=nano-pow.git

Fix threshold check when high bits are equal to difficulty and low bits must be checked.
---

diff --git a/src/lib/gpu/compute.wgsl b/src/lib/gpu/compute.wgsl
index 9c46abe..17d2298 100644
--- a/src/lib/gpu/compute.wgsl
+++ b/src/lib/gpu/compute.wgsl
@@ -571,7 +571,7 @@ fn main(id: vec3<u32>, validate: bool) {
 	* Set nonce if it passes the difficulty threshold and no other thread has set it.
 	*/
 	var result: vec2<u32> = BLAKE2B_INIT[0u] ^ v0 ^ v8;
-	if (validate || ((result.y > ubo.difficulty.y || (result.y == ubo.difficulty.y && result.y >= ubo.difficulty.y)) && atomicLoad(&work.found) == 0u)) {
+	if (validate || ((result.y > ubo.difficulty.y || (result.y == ubo.difficulty.y && result.x >= ubo.difficulty.x)) && atomicLoad(&work.found) == 0u)) {
 		atomicStore(&work.found, 1u);
 		work.nonce = m0;
 		work.result = result;