Closed Bug 674731 Opened 9 years ago Closed 9 years ago

WebGL/ANGLE interop with D3D layers requests incorrect extension


(Core :: Canvas: WebGL, defect)

Windows 7
Not set



Tracking Status
firefox5 --- unaffected
firefox6 --- fixed
firefox7 --- fixed


(Reporter: jgilbert, Assigned: jgilbert)



(Keywords: regression, Whiteboard: [qa-])


(1 file)

GLContextEGL requires extension "EGL_ANGLE_surface_d3d_share_handle", which no longer exists. According to the extension spec, the extension was renamed in version 2 to "EGL_ANGLE_surface_d3d_texture_2d_share_handle", but this change was evidently never factored back into GLContextEGL.

EGL_ANGLE_surface_d3d_share_handle only ever existed in a local patch that we used to have, not in upstream ANGLE.

When I upgraded ANGLE to r653 (bug 657748), I removed this patch as that functionality had been integrated upstream. I didn't notice that the extension name was different.
Attached patch FixSplinter Review
Updates extension and relevant identifiers to match spec.
Fixed y-flip problem with shared textures.
Attachment #549201 - Flags: review?(bjacob)
Attachment #549201 - Flags: review?(bjacob) → review+
Summary: ANGLE layers acceleration requests incorrect extension → WebGL/ANGLE interop with D3D layers requests incorrect extension
Landed on central:

Please give us beta approval.
Attachment #549201 - Flags: approval-mozilla-beta?
Attachment #549201 - Flags: approval-mozilla-aurora?
Closed: 9 years ago
Resolution: --- → FIXED
Attachment #549201 - Flags: approval-mozilla-beta?
Attachment #549201 - Flags: approval-mozilla-beta+
Attachment #549201 - Flags: approval-mozilla-aurora?
Attachment #549201 - Flags: approval-mozilla-aurora+
Blocks: 657748
Keywords: regression
Target Milestone: --- → mozilla8
Mozilla/5.0 (Windows NT 6.1; rv:7.0) Gecko/20100101 Firefox/7.0

Can anyone please help me with a test case or with STR / guidelines that I can use to verify this fix?

Thank you
Actually, no, it's not very easy to verify this one. The only user-visible difference is speed: when we had this bug, running WebGL demos with a large window or full-screen was slower than normal.

In order to prevent this kind of regression in the future, we need WebGL performance tests: bug 676138.
Depends on: 676138
qa- as no QA fix verification needed
Whiteboard: [qa-]
You need to log in before you can comment on or make changes to this bug.