Bug 264665

Summary:	[GStreamer] http/wpt/webcodecs/videoFrame-webglCanvasImageSource.html fails
Product:	WebKit	Reporter:	Philippe Normand <philn>
Component:	Platform	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	kkinnunen, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Philippe Normand 2023-11-11 04:46:01 PST

Seems too specific to Apple's WebGL?

--- /home/buildbot/worker/GTK-Linux-64-bit-Release-Tests/build/layout-test-results/http/wpt/webcodecs/videoFrame-webglCanvasImageSource-expected.txt
+++ /home/buildbot/worker/GTK-Linux-64-bit-Release-Tests/build/layout-test-results/http/wpt/webcodecs/videoFrame-webglCanvasImageSource-actual.txt
@@ -1,8 +1,8 @@
 
-PASS VideoFrame from canvas snapshots drawing at call time, context: webgl offscreen: true, premultipliedAlpha: true
-PASS VideoFrame from canvas snapshots drawing at call time, context: webgl offscreen: true, premultipliedAlpha: false
-PASS VideoFrame from canvas snapshots drawing at call time, context: 2d offscreen: true
-FAIL VideoFrame from canvas snapshots drawing at call time, context: webgl offscreen: false, premultipliedAlpha: true assert_equals: expected 8388736 but got 4194432
-PASS VideoFrame from canvas snapshots drawing at call time, context: webgl offscreen: false, premultipliedAlpha: false
-PASS VideoFrame from canvas snapshots drawing at call time, context: 2d offscreen: false
+FAIL VideoFrame from canvas snapshots drawing at call time, context: webgl offscreen: true, premultipliedAlpha: true assert_equals: expected 8388736 but got 8192128
+FAIL VideoFrame from canvas snapshots drawing at call time, context: webgl offscreen: true, premultipliedAlpha: false assert_equals: expected 8388736 but got 8192128
+FAIL VideoFrame from canvas snapshots drawing at call time, context: 2d offscreen: true assert_equals: expected 8388736 but got 8192128
+FAIL VideoFrame from canvas snapshots drawing at call time, context: webgl offscreen: false, premultipliedAlpha: true assert_equals: expected 4278190335 but got 65535
+FAIL VideoFrame from canvas snapshots drawing at call time, context: webgl offscreen: false, premultipliedAlpha: false assert_equals: expected 4278190335 but got 65535
+FAIL VideoFrame from canvas snapshots drawing at call time, context: 2d offscreen: false assert_equals: expected 8388736 but got 8192128

Comment 1 Philippe Normand 2023-11-11 06:44:45 PST

Adding Kimmo in CC.

Could the test allow some tolerance/epsilon margin when checking pixels?

Comment 2 Radar WebKit Bug Importer 2024-01-16 13:43:38 PST

<rdar://problem/121074645>