hi all,
i have a notebook with nvidia and intel graphic card, with updated drivers.
I often have problems displaying polygons.
they disappear, or strange geometries appear, or if I subdivide the new polygons are not seen. if close zbrush and reload subtool work correctly.
do you find that there are incompatibilities with notebooks? and any solutions? thank you.
if i rotate the mode poligon disappear . (double is disabled)
Hello @Enrico_Sartori
If I understand your issue correctly, this is a display issue ZBrush sometimes has on a wide variety of systems , although it may be more severe on certain hardware configurations–especially if they do no not meet the recommended specs. It may be more common with polyframe mode on (anecdotal).
What happens is that the image of the mesh on the screen gets frozen in place, and won’t update until you navigate, forcing the screen to refresh. Sometimes only a small portion of the screen updates, probably creating those “strange geometries”. I have no technical explanation for why this happens, only that it’s not uncommon. It’s mostly a display nuisance, having no actual impact on the geometry of your mesh.
As to your disappearing polygon, I notice that you have two zones of mesh surface that appear to have different resolutions, possibly as the result of a local subdivision. This can create complicated geometry where the two sections of mesh meet. It also isn’t clear that the surfaces are welded together. Are the meshes separate?
It’s possible that an operation you performed caused a problem, and Zbrush could no longer support a polygon in that location (polygons with greater than 4 points cannot exist at any time in ZBrush). It’s also possible the geometry has become distorted in that location, possibly connecting to other geometry in an unexpected fashion.
It’s also possible that the polygon is still there, but the normal has become inverted or flipped. If you switch on “double” and the polygon re-appears, then you know this is the case. You could flip the polygon back with Tool > Display Properties Flip, with all polygons except the target polygon hidden. Flipped normals are fairly rare in ZBrush these days, though.
So what might have happened here, is that you have some sort of topological issue with your mesh as the result of an operation, but you didn’t notice it until after the screen refreshes from the navigation because of that glitch.
If you feel that it’s happening too often, and your hardware meets or exceed the recommended specs, you may want to contact Pixologic Support. They could maybe give you a more technical explanation, and you could make them aware of the performance on your specific hardware configuration.
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forgive me if I use google translator.
yes, you understand the problem, and it always happens in polyframe mode.
thanks for your answer.
in the polygon of my photo, they are separate geometries, I solved by adding an edgeloop in the polygon that disappeared.