From: Chris Duncan <chris@codecow.com>
Date: Thu, 21 May 2026 14:43:38 +0000 (-0700)
Subject: Replace some minimums, divisions, and multiplications with comparisons and bitshifts.
X-Git-Tag: v5.1.15~1^2~11
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=ba1560db4154b3db135931949885583591d71cad;p=nano-pow.git

Replace some minimums, divisions, and multiplications with comparisons and bitshifts.
---

diff --git a/src/lib/generate/webgl/index.ts b/src/lib/generate/webgl/index.ts
index 53c59a4..be68b92 100644
--- a/src/lib/generate/webgl/index.ts
+++ b/src/lib/generate/webgl/index.ts
@@ -95,14 +95,14 @@ function createCanvas (size: number): void {
 	LOG: logger.log('NanoPow WebGL createCanvas', 'requested size', size)
 	LOG: logger.log('NanoPow WebGL createCanvas', 'MAX_VIEWPORT_DIMS', MAX_VIEWPORT_DIMS)
 	size = Math.min(size, ...MAX_VIEWPORT_DIMS)
-	size = Math.floor(size / 0x100) * 0x100
+	size = (size >>> 8) << 8
 	canvas.height = canvas.width = size
 	LOG: logger.log('NanoPow WebGL createCanvas', 'canvas size', canvas.height, canvas.width)
 	LOG: logger.log('NanoPow WebGL createCanvas', 'drawingBuffer size', gl.drawingBufferHeight, gl.drawingBufferWidth)
 	if (canvas.height !== gl.drawingBufferHeight
 		|| canvas.width !== gl.drawingBufferWidth
 	) {
-		size = Math.floor(Math.min(gl.drawingBufferHeight, gl.drawingBufferWidth) / 0x100) * 0x100
+		size = ((gl.drawingBufferHeight < gl.drawingBufferWidth ? gl.drawingBufferHeight : gl.drawingBufferWidth) >>> 8) << 8
 		canvas.height = canvas.width = size
 	}
 	LOG: logger.log('NanoPow WebGL createCanvas', 'final size', size)
@@ -232,7 +232,7 @@ function setup (effort: number): void {
 	try {
 		reset()
 		drawEffort = effort
-		createCanvas(drawEffort * 0x100)
+		createCanvas(drawEffort << 8)
 		compile()
 	} catch (err) {
 		reset()
diff --git a/test/index.html b/test/index.html
index 5ada24b..e147d2b 100644
--- a/test/index.html
+++ b/test/index.html
@@ -31,7 +31,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
 			const MAX_VIEWPORT_DIMS = gl.getParameter(gl.MAX_VIEWPORT_DIMS)
 			canvas.height = MAX_VIEWPORT_DIMS?.[0] ?? 0x1000
 			canvas.width = MAX_VIEWPORT_DIMS?.[1] ?? 0x1000
-			return Math.min(gl.drawingBufferHeight, gl.drawingBufferWidth)
+			return gl.drawingBufferHeight < gl.drawingBufferWidth ? gl.drawingBufferHeight : gl.drawingBufferWidth
 		})(new OffscreenCanvas(0, 0))
 
 		function random (size = 64) {
@@ -45,9 +45,9 @@ SPDX-License-Identifier: GPL-3.0-or-later
 		function average (times, type, effort) {
 			const averages = stats(times)
 			const title = type === 'WebGPU'
-				? `NanoPow (${type}) | Effort: ${effort} | Dispatch: ${(0x100 * effort) ** 2} | Threads: ${64 * (0x100 * effort) ** 2}`
+				? `NanoPow (${type}) | Effort: ${effort} | Dispatch: ${(effort << 8) << 1} | Threads: ${64 * (effort << 8) << 1}`
 				: type === 'WebGL'
-					? `NanoPow (${type}) | Effort: ${effort} | Work per frame: ${Math.min(0x100 * effort, glSize) ** 2}`
+					? `NanoPow (${type}) | Effort: ${effort} | Work per frame: ${Math.min(effort << 8, glSize) << 1}`
 					: `NanoPow (${type}) | Effort: ${effort}`
 			return {
 				[title]: averages