From 2d22364006df9f2ac5571932a1c8364476872e42 Mon Sep 17 00:00:00 2001
From: Teodor Tanasoaia <28601907+teoxoy@users.noreply.github.com>
Date: Thu, 26 Feb 2026 17:52:23 +0100
Subject: [PATCH] Update expected result of an unconfigured canvas to be
 transparent black

---
 .../web_platform/canvas/readbackFromWebGPUCanvas.spec.ts  | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/src/webgpu/web_platform/canvas/readbackFromWebGPUCanvas.spec.ts b/src/webgpu/web_platform/canvas/readbackFromWebGPUCanvas.spec.ts
index ec434cc57854..0bd05d44c634 100644
--- a/src/webgpu/web_platform/canvas/readbackFromWebGPUCanvas.spec.ts
+++ b/src/webgpu/web_platform/canvas/readbackFromWebGPUCanvas.spec.ts
@@ -519,14 +519,8 @@ g.test('transferToImageBitmap_unconfigured_nonzero_size')
       return;
     }
 
-    // Since there isn't a configuration we expect the ImageBitmap to have the default alphaMode of "opaque".
+    // Since there isn't a configuration we expect the ImageBitmap to be transparent black.
     const expected = new Uint8ClampedArray(kWidth * kHeight * 4);
-    for (let i = 0; i < expected.byteLength; i += 4) {
-      expected[i + 0] = 0;
-      expected[i + 1] = 0;
-      expected[i + 2] = 0;
-      expected[i + 3] = 255;
-    }
 
     readbackContext.drawImage(ib, 0, 0);
     readPixelsFrom2DCanvasAndCompare(t, readbackContext, expected);