Import Objects Get No Love
Comparing the Library info, there is not too much different.
You had lazy-union, vertex-object-renderers-indexing enabled, so I set them too, and it still works.
OpenGL Version are same, I have build number 32 v 31, probably not important.
me: GL Renderer: Intel(R) UHD Graphics
you: GL Renderer: Intel(R) Iris(R) Plus Graphics
I suspect:
you: Windows Surface 7 Pro with 8GB (2019)
me: 2025 i5 64MB.
With your observation re cache size, I had 8000MB, I reduced to 1000MB & restarted, still works.
I suspect, with 2019 H/W and only 8GB, you are probably having an issue with Graphics memory,
but I'm not an expert in that area. That may be settable??
(But it works with 2021.01, so hmmm, maybe others have insights)
If you reverse the for() loop from 30 -1 0, does it change which stones get shown,
I suspect that may indicate you hit some limit.
I see a H/W upgrade in your future...
From: Glenn Butcher via Discuss [mailto:discuss@lists.openscad.org]
Sent: Tuesday, October 14, 2025 4:02 AM
To: discuss@lists.openscad.org
Cc: Glenn Butcher
Subject: [OpenSCAD] Re: Import Objects Get No Love
So, your query got me thinking about cache size. I changed CGAL Cache size and PolySet Cache size from 1000MB to 2000MB and it rendered more stones. I then doubled those two numbers, but it wouldn't render more stones.
My device is a Windows Surface 7 Pro with 8GB installed memory.
Glenn,
Wikipedia on your Graphics:
Gen11 architecture
Ice Lake
New features: 10 nm Gen 11 GPU microarchitecture, two HEVC 10-bit encode pipelines, three 4K display pipelines (or 2× 5K60, 1× 4K120), variable rate shading (VRS), https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-29 [28] https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-30 [29] https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-31 [30] and integer scaling. https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-32 [31]
While the microarchitecture continues to support double-precision floating-point as previous versions did, the mobile configurations of it do not include the feature and therefore on these it is supported only through emulation. https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-33 [
The Surface is mobile, so it is software emulation. I'm no expert, but that doesn't sound good to me. (?)
From: Michael Marx (spintel) via Discuss [mailto:discuss@lists.openscad.org]
I suspect, with 2019 H/W and only 8GB, you are probably having an issue with Graphics memory,
but I'm not an expert in that area. That may be settable??
(But it works with 2021.01, so hmmm, maybe others have insights)
If you reverse the for() loop from 30 -1 0, does it change which stones get shown,
I suspect that may indicate you hit some limit.
I see a H/W upgrade in your future...
I get that, I've been pushing the capabilities on this little tablet for
some time. Thing is, this worked a few weeks ago on a dev build, I took
out time to work on this franken-program to make stone walls, and when I
came back to OpenSCAD with a current dev build it doesn't.
I found the snapshots directory, I'm going to bisect dev builds until I
find the one that changed things.
On 10/13/2025 5:17 PM, Michael Marx (spintel) via Discuss wrote:
Glenn,
Wikipedia on your Graphics:
*Gen11 architecture*
*Ice* Lake
New features: 10 nm Gen 11 GPU microarchitecture, two HEVC 10-bit
encode pipelines, three 4K display pipelines (or 2× 5K60, 1× 4K120),
variable rate shading (VRS),^[28]
https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-29[29]
https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-30[30]
https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-31
and integer scaling.^[31]
https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-32
While the microarchitecture continues to support double-precision
floating-point as previous versions did, the mobile configurations of
it do not include the feature and therefore on these it is supported
only through emulation.^[
https://en.wikipedia.org/wiki/Intel_Graphics_Technology#cite_note-33
The Surface is mobile, so it is software emulation. I'm no expert, but
that doesn't sound good to me. (?)
*From:*Michael Marx (spintel) via Discuss
[mailto:discuss@lists.openscad.org]
I suspect, with 2019 H/W and only 8GB, you are probably having an
issue with Graphics memory,
but I'm not an expert in that area. That may be settable??
(But it works with 2021.01, so hmmm, maybe others have insights)
If you reverse the for() loop from 30 -1 0, does it change which
stones get shown,
I suspect that may indicate you hit some limit.
I see a H/W upgrade in your future...
OpenSCAD mailing list
To unsubscribe send an email todiscuss-leave@lists.openscad.org
Also, quick note: If you suspect anything related to the GPU, you should still be able to render and export and inspect the exported file in another tool. If that works, it sounds like a GPU-related issue.
-Marius
On Oct 13, 2025, at 22:48, Glenn Butcher via Discuss <discuss@lists.openscad.org> wrote:
I get that, I've been pushing the capabilities on this little tablet for some time. Thing is, this worked a few weeks ago on a dev build, I took out time to work on this franken-program to make stone walls, and when I came back to OpenSCAD with a current dev build it doesn't.
I found the snapshots directory, I'm going to bisect dev builds until I find the one that changed things.
On 10/13/2025 5:17 PM, Michael Marx (spintel) via Discuss wrote:
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div.Section1 { page: Section1; }Glenn,Wikipedia on your Graphics:
Gen11 architecture
Ice Lake
New features: 10 nm Gen 11 GPU microarchitecture, two HEVC 10-bit encode pipelines, three 4K display pipelines (or 2× 5K60, 1× 4K120), variable rate shading (VRS),[28][29][30] and integer scaling.[31]
While the microarchitecture continues to support double-precision floating-point as previous versions did, the mobile configurations of it do not include the feature and therefore on these it is supported only through emulation.[
The Surface is mobile, so it is software emulation. I'm no expert, but that doesn't sound good to me. (?)
From: Michael Marx (spintel) via Discuss [mailto:discuss@lists.openscad.org]
I suspect, with 2019 H/W and only 8GB, you are probably having an issue with Graphics memory,
but I'm not an expert in that area. That may be settable??
(But it works with 2021.01, so hmmm, maybe others have insights)If you reverse the for() loop from 30 -1 0, does it change which stones get shown,
I suspect that may indicate you hit some limit.I see a H/W upgrade in your future...
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