How to modify background shader

[joondong]

How to change background shader? I am trying to apply some filter to background of camera streaming. Kind of color filtering. However, whenever I changed Library/PackageCache/com.unity.xr.core@4.0.8/Assets/Shaders/ARCoreBackground.shader it returns to original code.

Can I modify the shader?

How to shake background texture? What I am trying to make is "Camera shake" which is used for bomb explosion. In my AR apps, I need to shake background as well because shaking just rendering camera looks weird.

How to shake background texture for this work?

[joondong]

At 0~1 sec, camera shakes but not background. https://www.youtube.com/watch?v=94wq_2ohrRU&feature=youtu.be

@tdmowrer My bad, I uploaded new one

[tdmowrer]

You can override the material (with a custom shader) instead of directly modifying the one in the package. See my comment here: https://github.com/Unity-Technologies/arfoundation-samples/issues/620#issuecomment-705027617

That video seems to have been removed, but if you want the background texture to shake, try adding a small random offset to the gl_Vertex in the shader, around this line:

// Transform the position from object space to clip space.
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[joondong]

@tdmowrer Thanks for your help!!!!! I made it! https://www.youtube.com/watch?v=iXWl5f_iW7k

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[busiyg]

You can override the material (with a custom shader) instead of directly modifying the one in the package. See my comment here: #620 (comment)

That video seems to have been removed, but if you want the background texture to shake, try adding a small random offset to the gl_Vertex in the shader, around this line:

// Transform the position from object space to clip space.
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;

Hello, I want to modify the color to make the AR scene look darker, which parameter to change, thank you

[tdmowrer]

You'd need to change the gl_FragColor in the fragment shader.