Qtwebengine is not working properly for webGL content/class.

I am trying to draw WebGL contents in QtwebEngine on Mac OS(Catalina) but getting the error.

So I have following findings on Different Qt version,

          1.QtwebEngine(Qt5.14.2) -

1. With this, I am getting the following error,

[83000:775:0612/182121.893476:ERROR:context_group.cc(143)] ContextResult::kFatalFailure: WebGL1 blacklisted

2.  2.QtwebEngine(Qt5.12.3) -

           With this, I am getting the following error,

           js: Failed to load https:// <some resource> The 'Access-Control-Allow-Origin' header has a value 'qrc://' that is not equal to the supplied origin. Origin 'qrc://' is therefore not allowed access.

         Somehow I manage to resolve this error but after that getting below error-

[52886:83459:0609/174212.245657:ERROR:gles2_cmd_decoder.cc(10371)] [.WebGL-0x7ff08d83b600]PERFORMANCE WARNING: Attribute 0 is disabled. This has significant performance penalty js: [.WebGL-0x7ff08d83b600]PERFORMANCE WARNING: Attribute 0 is disabled. This has a significant performance penalty.

           according to the warning:- Somehow while setting up the GPU buffers, the enableVertexAttribArray is not gettings called.

Note - It works fine with the browser in both cases.

Could you please suggest some solutions to achieve the same/resolve the error ?

Any inputs would be really appreciated!