What are these name refered to: FX, MRM (solved)

Added by sambsp over 7 years ago

Both words comes from NEL 3D, "FX" and "MRM" are abbreviation, I'd like to know the source for my interest.


Replies (4)

RE: What are these name refered to: FX, MRM, - Added by sfb over 7 years ago

sambsp,

FX is a common abbreviation for "effects." In NeL and Ryzom terms this typically refers to a particle system but does not always. You will have to refer to the context of the sheet or source code to determine. But the spirit of the term is always essentially the same.

MRM stands for Multi-Resolution Mesh. MRM allows detailed polygon models to automatically lower their complexity as factor s such as the model's distance from the camera change.

Thanks,
sfb
/s

RE: What are these name refered to: FX, MRM, - Added by sambsp over 7 years ago

sfb,

Get it. So MRM is mipmapping. Thanks.

RE: What are these name refered to: FX, MRM, - Added by sfb over 7 years ago

sambsp,

No, MRM is not mipmapping. Mipmaps is a similar concept but specific to textures. Take for example FO_S1_arbragrelot.max - open this up and you will find four objects, two of these are important for the purpose of this discussion:

  • FO_S1_arbragrelot
  • FO_S1_arbragrelot_X

FO_S1_arbragrelot is the mesh of a tree, textured with something like 570 polygons. The other shape, FO_S1_arbragrelot_X, is essentially a billboard and only amounts to about 12 polygons. All in all there's nothing special about the 2nd shape. Select the first shape, FO_S1_arbragrelot, and go to the Utilities tab, then NeL Export, then Node Properties. Choose the LOD_MRM tab and note that FO_S1_arbragrelot_X is selected here. The MRM system will blend from the high polygon (570) to the low polygon (12) over a distance of 200.

This was a long winded way of showing you a simple LOD done with MRM. MRM also have an active skin reduction mode. You can look at FY_HOM_armor00.max for an example of how the active MRM mode is configured. If you open this file from the database and then select the torso, which is FY_HOM_armor00_gilet, and pull up the same Node Properties tab you will see that it has active MRM configured.

How exactly each of these parameters affects the mesh I cannot say - I'm not an artist and not familiar enough with the system.

HTH!

Thanks,
sfb
/s

RE: What are these name refered to: FX, MRM, - Added by sambsp over 7 years ago

sfb,

So I need further study , thanks.

(1-4/4)