Volume render object is too much transparent in hololens

[CelaldoganGunes]

How can we make volume rendered object more opaque ? We can't see details.

[mlavik1]

Hi!
I don't have a hololens device to test on, but here's my guess:
The opacity should be adjustable by changing the alpha values of the transfer function. However, is the problem you're encountering that parts of the volume are not visible at all? (rather than being semi-transparent)?
If so, I think maybe the issue is caused by depth not being written.

See this line in DirectVolumeRenderingShader.shader:

if (col.a > 0.15 && t < tDepth) {
    tDepth = t;
}

It might work if you change "0.15" to a smaller value, for example "0.01"

Maybe I should add an option for this, or investigate if there's a better way to do this.