Enabling High Level Shader Language seems to be needed for WebGL to work.
Created attachment 256032 [details] Patch
Note that there are important steps to take when updating ANGLE. See http://trac.webkit.org/wiki/UpdatingANGLE
Comment on attachment 256032 [details] Patch I wondered why it wasn't working. Thanks for looking into this.
(In reply to comment #3) > Comment on attachment 256032 [details] > Patch > > I wondered why it wasn't working. Thanks for looking into this. Thanks for reviewing! When not running from Visual Studio, it is also important to copy "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\D3Dcompiler_47.dll" to the same folder as WinLauncher.exe, or have it in the PATH. Otherwise ANGLE will fail to initialize.
Comment on attachment 256032 [details] Patch Clearing flags on attachment: 256032 Committed r186262: <http://trac.webkit.org/changeset/186262>
All reviewed patches have been landed. Closing bug.