From: Chris Duncan <chris@zoso.dev>
Date: Fri, 13 Dec 2024 20:14:36 +0000 (-0800)
Subject: Simplify canvas config with a single static constant.
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=443d4ef902eb45df76186560c09efdfcce79ff20;p=libnemo.git

Simplify canvas config with a single static constant.
---

diff --git a/src/lib/workers/pow.ts b/src/lib/workers/pow.ts
index dfcffae..5678433 100644
--- a/src/lib/workers/pow.ts
+++ b/src/lib/workers/pow.ts
@@ -3,6 +3,7 @@
 
 export class Pow {
 	static SEND_THRESHOLD = '0xfffffff8'
+	static WORKLOAD: number = 256 * 4		// must be a multiple of 256
 
 	static async find (hash: string, threshold: string = this.SEND_THRESHOLD): Promise<string> {
 		return new Promise<string>(resolve => {
@@ -26,12 +27,7 @@ export class Pow {
 	* @param threshold         Number|String   Optional difficulty threshold (default=0xFFFFFFF8 since v21)
 	*/
 
-	// Both width and height must be multiple of 256, (one byte)
-	// but do not need to be the same,
-	// matching GPU capabilities is the aim
-	static webglWidth = 256 * 2
-	static webglHeight = 256 * 2
-	static gl = new OffscreenCanvas(this.webglWidth, this.webglHeight).getContext('webgl2')
+	static gl = new OffscreenCanvas(this.WORKLOAD, this.WORKLOAD).getContext('webgl2')
 	static work0 = new Uint8Array(4)
 	static work1 = new Uint8Array(4)
 	static SIGMA82: number[] = [
@@ -216,8 +212,8 @@ export class Pow {
 
 		void main() {
 			int i;
-			uint uv_x = uint(uv_pos.x * ${this.webglWidth - 1}.);
-			uint uv_y = uint(uv_pos.y * ${this.webglHeight - 1}.);
+			uint uv_x = uint(uv_pos.x * ${this.WORKLOAD - 1}.);
+			uint uv_y = uint(uv_pos.y * ${this.WORKLOAD - 1}.);
 			uint x_pos = uv_x % 256u;
 			uint y_pos = uv_y % 256u;
 			uint x_index = (uv_x - x_pos) / 256u;