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Known bugs and limitations in PLIB version 1.8.x
More in depth stuff can be found in TODO_AFTER135.
* ssgLOS is really broken.
* ssgStripify and ssgFlatten might well have bugs in them.
A known bug of ssgStripify is that : since it rearranges and
merges leaf nodes, ssgSelectors are messed up
* Sometimes cr*p values appear in 3D files, for example .ac files.
The reason seems to be that sometimes the loader handles colours
differently than the writer.
* Several, general smalish .MDL loader bugs are known; Look in TODO_AFTER135
* Scaling does not work (intentionally). Uniform scaling may be
enabled by uncommenting "radius *= sgLengthVec3(m[0])" in
sgSphere::orthoXform. It is currently disabled because that extra
calculation would degrade performance on non-scaled matrices.
Scaling really makes a mess of SSG bounding sphere tests
* .ssg files should not be used for long term storage. It will probably
change in incompatible ways.
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