unity_StereoEyeIndex is always 1 on single pass instanced for rift-s

Target Platforms XR
1

EDIT: Hi guys i was trying to get eyeIndex like below in my custom function which is called inside frag shader. But as said it did not work. But when i get the unity_StereoEyeIndex in vertex shader and put it in a custom variable, then use it on frag shader everything worked ok :slight_smile: So if you have that strange behaviour too; get the eyeIndex on vertex shader and pass it to frag via custom param (like “float myEyeIndex” etc) and use it like that.

Hi,
I am getting the unity_StereoEyeIndex always 1 on single pass instanced mode for rift-s for standard pipeline for Unity 2019.3.0f3. Is anyone getting the same issue? Or am i doing something wrong

float eyeIndex = 0;
#if defined(UNITY_STEREO_INSTANCING_ENABLED)

eyeIndex = unity_StereoEyeIndex; //code falls here!!!

#elif defined(UNITY_SINGLE_PASS_STEREO)

eyeIndex = unity_StereoEyeIndex;

#else
…
#endif

1 Like
2

Did you put your custom variable for the unity_StereoEyeIndex in a struct that you pass from your vertex shader to your fragment shader? If so, what semantic did you use?

3

You can use TEXCOORD0 for such values. If that’s already taken, use TEXCOORD with another index.