Three.js r128: EXT_frag_depth and ANGLE_instanced_arrays extensions are not supported

Questions
1

I am doing conversion from three.js r103to three.js r128. In the same chrome browser, EXT_frag_depth and ANGLE_instanced_arrays extensions are supported if I use three.js r103, but NOT supported if I use three.js r128. It must be related to WebGlRenderer. I previously thought the extensions are only related to the hardware. Now it seemed it is related to the version of three.js as well.

2

The WebGLRenderer now defaults to WebGL2 if available. This could be the issue. Can you try using the WebGL1Renderer and see if that fixes it?

2 Likes
3

Yes, that worked perfectly! Thanks!

4

I found that WenGL2 supports both EXT_frag_depth and ANGLE_instanced_arrays by default. However, the tests “renderer.extensions.get( “EXT_frag_depth” )” and “renderer.extensions.get( “ANGLE_instanced_arrays” )” all returned “null”. So we don’t need these tests or do we have new test functions?

5

There is no need to request WebGL extensions which are enabled by default.