The general answer to your problem is: depends ;-)
Seriously, for me option B) is likely to get you more performance, as
you are using one texture for a bigger chunk of geometry. On the other
hand this might largely depend on the actual size of the chunk. Less
materials will perform better, as there might be less state changes,
while chunks of a bigger size might hinder the cull traversal to skip
parts of your scene not visible. Maybe you should elaborate your
question by providing a little more detail (like how big your collection
of buildings is in terms of few/more polygons ratio and the extents of
the geometry)
Hi there!
We have a huge city Scene. We are trying to get the best modeling approach, in
terms of rendering performance.
We are handling two options:
A) Each bunch of data is a single building (a few polygons) with multi-material
(three textures). Each texture has a size of 1024x1024.
B) Each bunch of data is a collection of buildings (more polygons), with a
single material (one texture). The texture size is of 1024x1024.
Thank you!
Cheers,
Roberto
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=40284#40284
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