Using _CameraDepthTexture with Orthographic Camera

Hi Guy
I am working on a water shader(brought from asset store and do some modify).It works well with perspective camera.But when using Orthographic Camera,It seems can't calculate screen depth right. the attachments are shader code and images..

 

Working on a similar thing! Your code is linearly sampling the depth texture, but with the orthographic camera the coordinates are already linear.
You can see my code snippet here in this thread's OP. It should solve your issue. The key is lerping between the sample straight from the depth texture and a linear remapping of it, depending on the camera's render mode.
https://forum.unity.com/threads/inconsistent-unity_reversed_z.639433/
The CheckPerspective code is simply:

Code (CSharp):

1. // Check if the camera is perspective.
2. // (returns 1.0 when orthographic)
3. float CheckPerspective(float x)
4. {
5.     return lerp(x, 1.0, unity_OrthoParams.w);
6. }

 

I replace

Code (CSharp):

1. float sceneZ = max(0,LinearEyeDepth (UNITY_SAMPLE_DEPTH(tex2Dproj(_CameraDepthTexture, UNITY_PROJ_COORD(i.projPos)))) - _ProjectionParams.g);

with

Code (CSharp):

1. float sceneZ = max(0,UNITY_SAMPLE_DEPTH(tex2Dproj(_CameraDepthTexture, UNITY_PROJ_COORD(i.projPos))) - _ProjectionParams.g);

But the result not change.

 

Depth map estimation is divided into three main parts:

The measured values were obtained by stereo vision and combined with the prior depth

Depth map propagation from frame to frame

Regularization and removal of outliers

 

What ... 100% of that was nonsense.



The depth in orthographic mode is linear, like @Yandalf mentioned. It’s a zero to one value that goes from the near to far clip planes.

float sceneZ = lerp(_ProjectionParams.y, _ProjectionParams.z, UNITY_SAMPLE_DEPTH(tex2Dproj(_CameraDepthTexture, i.projPos)));

 

Solved，thanks

 

could you pleas share the final depth shader? Still can't solve this problem(