How to use Submit_GlArrayTexture

[freetailupdate]

Hi

I noticed Submit_GlArrayTexture was added an EVRSubmitFlags for compositor Submit. There doesn't seem to be any documentation on how to use it.

I have a texture array with the left eye rendered in layer 0, right eye in layer 1. Rendered via GL_OVR_multiview. Is the intention of this flag to allow us to submit texture arrays to the compositor?

A quick test seems not to work. I noticed this line related to metal textures

https://github.com/ValveSoftware/openvr/blob/4c85abcb7f7f1f02adaf3812018c99fc593bc341/headers/openvr.h#L165 MTLTextureType2DArray assume layer 0 is the left eye texture (vr::EVREye::Eye_left), layer 1 is the right eye texture (vr::EVREye::Eye_Right).

So have assumed the same for GL, that you just submit the same texture for both eyes and it'll assume to use layer 0 for left and layer 1 for right

      vr::VRCompositorError error = vr::VRCompositorError_None;
      error = vr::VRCompositor()->Submit(vr::EVREye::Eye_Left, &tex, nullptr, vr::EVRSubmitFlags::Submit_GlArrayTexture);
      if (error != vr::VRCompositorError_None)
      {
         DtWarn << "Error submitting left eye to HMD:  " << error << std::endl;
      }

      error = vr::VRCompositor()->Submit(vr::EVREye::Eye_Right, &tex, nullptr, vr::EVRSubmitFlags::Submit_GlArrayTexture);
      if (error != vr::VRCompositorError_None)
      {
         DtWarn << "Error submitting right eye to HMD:  " << error << std::endl;
      }

I just get black though and a GL error "GL_INVALID_VALUE error generated. The z values exceeds the slice count of the array texture."

Anyone know what I'm doing wrong or if this is even the intended purpose of the flag.

Thanks Tom