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Issue with sparse_voxels Z-buffer

See original GitHub issue

K3D version: 2.14.5
Python version: Python 3.95
Operating System: Windows
Using WebGL / GPU accelarated view

Description

Z buffering seems to fail on some near cubes in this sample.

What I Did

` import k3d import numpy as np N = 111220

sparse_voxels = np.random.randint(0, 1115, size=(N, 4), dtype=np.uint16) sparse_voxels[:, 3] = np.random.randint(1, 5, size=(N,))

plot = k3d.plot(grid_visible = False) obj = k3d.sparse_voxels(sparse_voxels, [300, 300, 300], compression_level=1, outlines=False) plot += obj plot.display() `

somecubesk3d

Issue Analytics

State:
Created a year ago
Comments:8

Top GitHub Comments

1reaction

artur-trzesiokcommented, Dec 19, 2022

Thanks @CoenHordijk !

So it is problem with https://en.wikipedia.org/wiki/Order-independent_transparency . It is not easy problem in computer graphics. Three.js that k3d depends on have no support to that.

There are some techniques to solve that like depth peels. I have that feature in beta stage. But even when we will release it it won’t be enable by default because add extra overhead to rendering. So that will be decision of user to add:

plot.depth_peels = 8

0reactions

CoenHordijkcommented, Dec 19, 2022

opacity = 1 is fine indeed

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