From: Chris Duncan <chris@zoso.dev>
Date: Tue, 22 Apr 2025 03:20:30 +0000 (-0700)
Subject: Declare bind group once and reuse.
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=ef26b38c9000083258731c3a5fcec34432315b8e;p=nano-pow.git

Declare bind group once and reuse.
---

diff --git a/src/lib/gpu/index.ts b/src/lib/gpu/index.ts
index d4c1ba9..4cd24fd 100644
--- a/src/lib/gpu/index.ts
+++ b/src/lib/gpu/index.ts
@@ -23,6 +23,7 @@ export class NanoPowGpu {
 	static #uboView: DataView
 	static #resultView: DataView
 	static #bindGroupLayout: GPUBindGroupLayout
+	static #bindGroup: GPUBindGroup
 	static #searchPipeline: GPUComputePipeline
 	static #validatePipeline: GPUComputePipeline
 
@@ -92,6 +93,24 @@ export class NanoPowGpu {
 				module: shaderModule
 			}
 		})
+		// Bind UBO read and GPU write buffers
+		this.#bindGroup = this.#device.createBindGroup({
+			layout: this.#bindGroupLayout,
+			entries: [
+				{
+					binding: 0,
+					resource: {
+						buffer: this.#uboBuffer
+					},
+				},
+				{
+					binding: 1,
+					resource: {
+						buffer: this.#gpuBuffer
+					},
+				},
+			],
+		})
 		// Create pipeline to connect compute shader to binding layout
 		this.#validatePipeline = this.#device.createComputePipeline({
 			layout: this.#device.createPipelineLayout({
@@ -170,32 +189,13 @@ export class NanoPowGpu {
 		this.#device.queue.writeBuffer(this.#gpuBuffer, 0, this.#bufferReset)
 		this.#device.queue.writeBuffer(this.#cpuBuffer, 0, this.#bufferReset)
 
-		// Bind UBO read and GPU write buffers
-		const bindGroup = this.#device.createBindGroup({
-			layout: this.#bindGroupLayout,
-			entries: [
-				{
-					binding: 0,
-					resource: {
-						buffer: this.#uboBuffer
-					},
-				},
-				{
-					binding: 1,
-					resource: {
-						buffer: this.#gpuBuffer
-					},
-				},
-			],
-		})
-
 		// Create command encoder to issue commands to GPU and initiate computation
 		const commandEncoder = this.#device.createCommandEncoder()
 		const passEncoder = commandEncoder.beginComputePass()
 
 		// Issue commands and end compute pass structure
 		passEncoder.setPipeline(pipeline)
-		passEncoder.setBindGroup(0, bindGroup)
+		passEncoder.setBindGroup(0, this.#bindGroup)
 		passEncoder.dispatchWorkgroups(passes, passes)
 		passEncoder.end()