[Webkit-unassigned] [Bug 180863] New: HLS WebGL video textures, UNPACK_FLIP_Y_WEBGL breaks rendering with Safari 11 macOS 10.12.6

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=180863

            Bug ID: 180863
           Summary: HLS WebGL video textures, UNPACK_FLIP_Y_WEBGL breaks
                    rendering with Safari 11 macOS 10.12.6
           Product: WebKit
           Version: Safari 11
          Hardware: iPhone / iPad
                OS: macOS 10.12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: electroteque at gmail.com
                CC: dino at apple.com

I am confirming that UNPACK_FLIP_Y_WEBGL is still breaking HLS rendering with Safari 11 on macOS 10.12.6. I have reported these issues before but no resolution. I have seperated this out with bugs in IOS 11 which flipy now has no effect at all. 

The Flipy flags cause black rendering like the IOS 11 HLS problem. No flag change fixes it apart from disabling FlipY. 

It has to be worked around by disabling Flipy and inverting the y coordinate on the vertex shader. 


With Flipy Flags:

http://dev.electroteque.org/webgl/three-hls.html
http://dev.electroteque.org/webgl/webgl-hls.html

Without FlipY flags and using shader Y inverse. Works.  

http://dev.electroteque.org/webgl/three-hls-flipy.html
http://dev.electroteque.org/webgl/webgl-hls-flipy.html

Mp4 with FlipY is fine

http://dev.electroteque.org/webgl/three-mp4.html

Please see these tickets for reference

https://bugs.webkit.org/show_bug.cgi?id=163866
https://bugs.webkit.org/show_bug.cgi?id=179417

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20171215/489cf622/attachment.html>