Instanced Stereo Rendering suggestion (halve VR draw calls)
I couldn't find any mention of VR in the Unity roadmap, so if I'm missing something (a VR-specific roadmap?) and this is already planned, please let me know.
In Bullet Train, Epic uses hardware instancing to draw objects to both eyes in a single draw call. It's planned to be released for UE4 generally, soon, and they're saying it could provide a 40% out-of-the-box performance boost. Apparently it improved Bullet Train performance by about 22%, which is presumably closer to the average real-world benefit, but that's still a huge difference. Halving draw calls also seems like it should be especially effective on mobile devices (it would probably require OpenGL ES3).
I expect the Unity team is already aware of the technique, but if anyone would like to vote for this suggestion, it might help to show that there is a demand for it and move it up a bit in priority. It's currently up to 6th place out of 6400 suggestions sorted by Most Active, but its vote count is pretty low.
In Bullet Train, Epic uses hardware instancing to draw objects to both eyes in a single draw call. It's planned to be released for UE4 generally, soon, and they're saying it could provide a 40% out-of-the-box performance boost. Apparently it improved Bullet Train performance by about 22%, which is presumably closer to the average real-world benefit, but that's still a huge difference. Halving draw calls also seems like it should be especially effective on mobile devices (it would probably require OpenGL ES3).
I expect the Unity team is already aware of the technique, but if anyone would like to vote for this suggestion, it might help to show that there is a demand for it and move it up a bit in priority. It's currently up to 6th place out of 6400 suggestions sorted by Most Active, but its vote count is pretty low.