koobas.hobune.stream
Best option to create real mirrors in terms of performance
I want to create several realtime and physically correct mirrors in a Unity scene. My main problem is the impact that they have on performance. The scene runs in a VR environment with a HTC Vive and once the mirrors are active, there is a noticeable worsening of performance.
The method I am using, is the shader variant "MirrorReflection4" (http://wiki.unity3d.com/index.php/MirrorReflection4) and so far the best I experienced but still very taxing, although I am using reduction of the resolution and frame rate. Besides this method, I also found these options for creating mirrors:
Unity's ReflectionProbe (works, but even more taxing in terms of performance)
Vive Stereo Rendering Toolkit (also big performance impact)
Selfplaced Camera that is rendered on a plane by a Render Texture (not taxing at all, but not physically correct)
Does anyone know different methods I could try or has some ideas to reduce this performance issue?
You may try to adjust mirror camera direction based on main camera dirction. And you will need to invert the scale of the mirror by X axis
any Update? I used Unity render texture but it takes more performance ~30 FPS
