From 4affbefcfc2c063c7ca71b4b0b18aa23dcfb937f Mon Sep 17 00:00:00 2001
From: Greggman <github@greggman.com>
Date: Thu, 5 Dec 2024 02:43:12 -0800
Subject: [PATCH] Fix texture builtin weight reading (#4078)

The code was using the wrong size for compute stages.
---
 .../shader/execution/expression/call/builtin/texture_utils.ts   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/webgpu/shader/execution/expression/call/builtin/texture_utils.ts b/src/webgpu/shader/execution/expression/call/builtin/texture_utils.ts
index 2e4123c6cfeb..ba8a58ae861c 100644
--- a/src/webgpu/shader/execution/expression/call/builtin/texture_utils.ts
+++ b/src/webgpu/shader/execution/expression/call/builtin/texture_utils.ts
@@ -522,7 +522,7 @@ export async function queryMipLevelMixWeightsForDevice(t: GPUTest, stage: Shader
       pass.setBindGroup(0, createBindGroup(pipeline));
       pass.dispatchWorkgroups(kMipLevelWeightSteps + 1);
       pass.end();
-      encoder.copyBufferToBuffer(storageBuffer, 0, resultBuffer, 0, resultBuffer.size);
+      encoder.copyBufferToBuffer(storageBuffer, 0, resultBuffer, 0, storageBuffer.size);
       break;
     }
     case 'fragment': {