There's also a really popular misfiled (at vwr instead of snow) at http://jira.secondlife.com/browse/VWR-14180 that's about this problem just an fyi.
-Gordon On Sun, Jun 21, 2009 at 1:04 AM, Sheet Spotter <[email protected]>wrote: > An enhancement in the Snowglobe viewer may be responsible for problems > with high resolution textures. I’m hoping someone in SLDev can confirm this > and start the search for solutions. > > > > Two examples of this problem are SNOW-45 (some large textures do not render > properly) and SNOW-48 (textures not resolving on megaprims). > > > > The Texture Console provided a clue to the underlying cause. In SNOW-45 and > SNOW-48 when you zoom in on the objects the “Area” column in the Texture > Console seems to be artificially limited to 4,096 or 65,536 for the > misbehaving textures. (You need to right-click and edit the object to see > its textures highlighted in the Texture Console.) In some cases the Area > value actually drops when you zoom in. > > > > The new Snowglobe viewer includes optimizations that reduce the detail in > textures that are “not important to the camera”. This seems to be aimed at > improving memory utilization by limiting the use of large textures when they > have no benefit. For example, when a face is “less important” it will be > drawn with only a 64x64 texture (that’s where the 4,096 comes from). Larger > faces that are less important may be drawn with a 256x256 texture (that’s > the 65,536 value). > > > > In the Snowglobe source code the LLFace::calcImportanceToCamera method > determines how important each face is in the avatar’s camera, and the > LLFace::getTextureVirtualSize method imposes limits on the texture size > based on this importance. (The value returned by getTextureVirtualSize is > displayed in the Area column in the Texture console.) One of these two > methods seems to be responsible for limiting the detail in the textures > displayed in SNOW-45 and SNOW-48. > > > > I hope someone more experienced in this area of the code can confirm these > findings, and further the cause by proposing possible solutions. A simpler > explanation of these findings will be added as a comment to SNOW-48. > > > > > > Sheet Spotter > > > > _______________________________________________ > Policies and (un)subscribe information available here: > http://wiki.secondlife.com/wiki/SLDev > Please read the policies before posting to keep unmoderated posting > privileges >
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