I was able to adjust the viewer debug setting RenderVolumeLODFactor
and adjust it from the default 1.0 to 4.0 and the vehicle renders
reasonably now as the view distance gets progressively greater.
Some guidance on LOD settings and rendering can be seen at
http://blog.nalates.net/2011/05/24/revised-sl-mesh-arriving/
But relatively large sub meshes were dropping out at far too short
a distance, and meshes uploaded in an earlier 2.7.2 viewer looked
fine.. so something has altered.
I appreciate this thread might be better reported under LL/Second
Life viewer forums and JIRA. But if anyone else has thoughts or
observations here on the OpenSim list, please add your notes.
At 10:58 21/07/2011, Ai Austin wrote:
I have been doing some more testing of meshes into OpenSim (r/16234
from a day or two ago, so quite recent on the server side).
I have been using various viewers for upload, and for viewing the
meshes in my tests.
With some large Collada meshes, I noticed some errors saying that
the asset was not benign stored due to the limit on
max_allowed_packet.. which it seems by default for the server side
is 1MB in MySQL. Funnily though the meshes that said they failed to
store did seem to persist in world and in inventory, and could be
rezzed out of inventory even afyer the OpenSim.exe error was
indicated. A bit odd I thought. I upped the max_allowed_packet to
16MB and the meshes were stored fine. The answer is to add
max_allowed_packet=16M into the [mysqld] section of your MySQL
config .ini file.
[mysqld]
max_allowed_packet
See this for information, where it explicitly indicates that the
server size is set low at 1MB and you may need to increase it if you
work with large BLOBS, which I assume Collada content is stored in...
http://dev.mysql.com/doc/refman/5.5/en/packet-too-large.html
The other thing I have noticed is that there is a change in the
rendering in world of my complex meshes between LL 2.7.2 and 2.7.4
viewers. For ones UPLOADED in 2.7.2 (or Kirstens S21 RC1) on
OpenSim r/16234 they render fine in both 2.7.2 and 2.7.4 viewers
with LOD handled well as you zoom out. BUT, for ones uploaded in LL
2.7.4 (exactly the same model, and exactly the same OpenASim.exe
server), the LOD is handled poorly, and soe quite large parts of the
meshes disappear even when only zooming out 30-60 metres. It looks
bad. See the three progressively more zoomed out examples here for
the LL 2.7.4 uploaded mesh, whereeas the vehicle looks the same with
all parts intact at all three zoom distances with a LL 2.7.2 viewer
uploaded mesh
http://www.aiai.ed.ac.uk/~bat/EXPORT/3D/SC-Images-2011-07-19/Supercar-Mesh-Test-Zoom-1.jpg
http://www.aiai.ed.ac.uk/~bat/EXPORT/3D/SC-Images-2011-07-19/Supercar-Mesh-Test-Zoom-2.jpg
http://www.aiai.ed.ac.uk/~bat/EXPORT/3D/SC-Images-2011-07-19/Supercar-Mesh-Test-Zoom-3.jpg
Anyone else have any experience to report on mesh testing on OpenSim
0.7.2 dev?
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