One triangle in ram? 2004-05-27 - By Andras Ikladi
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Bernard Lebel wrote:
>Hello,
>
>Does anyone know how much in ram a single triangle takes up? Is this
>quantifyable?
>
>
>
It is, but i wouldn`t say it has a linear relationship with scene memory
requirements (even if we only consider geometry).
Based on the mental ray rendering book:
A triangle takes about 42 bytes including it`s position vector +
additional 12bytes for additional vector type data attached (normal
vector, motion vector, texture vectors..etc). This is for triangle as a
rendering primitive (ie. after tessellation).
But the real cost also depends on the algorithm to be used (like storing
the sorted point list for visibility calculations in case of some
scanline engines vs. raytracing..etc)..and of course other not geometry
related factors.
Andras
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