polygons vs. 3d models

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07-26-2002
Unregistered

polygons vs. 3d models

is having 3d models more efficient than just designing them into the program? for example:

i got a building that could be built just using polygons, quadrics etc, but it is also possible to build it in a 3d modeler program, i need the processor's speed for other things. what should i do?
07-26-2002
MrWizard

Are you talking about hard coding vertices? That may be fine for small programs but when you have large worlds you will need space partitioning and 3D models.
07-26-2002
Unregistered

i mean, if u could hard code the vertices, wouldnt the program run faster 'cuase it would already be in ram?
07-26-2002
MrWizard

Quote:

Originally posted by Unregistered
i mean, if u could hard code the vertices, wouldnt the program run faster 'cuase it would already be in ram?

Well in DirectX (don't know about OpenGL) you have Index buffers and Vertex buffers you can write to. Hard coding would just be ridiculously tedious and probably wouldn't save you any speed. You can load models into the same vertex buffers without sacrificing much speed probably. Also, I don't think you would want to hard-code all the vertices for something like "Quake 3" would you?
07-26-2002
Unregistered

Quote:

Originally posted by MrWizard

Well in DirectX (don't know about OpenGL) you have Index buffers and Vertex buffers you can write to. Hard coding would just be ridiculously tedious and probably wouldn't save you any speed. You can load models into the same vertex buffers without sacrificing much speed probably. Also, I don't think you would want to hard-code all the vertices for something like "Quake 3" would you?

lol, but then again, i wouldnt want to write something like quake 3 by myself to though
07-27-2002
Coder

Quote:

Originally posted by Unregistered
i mean, if u could hard code the vertices, wouldnt the program run faster 'cuase it would already be in ram?

Once you load your model, its vertices sit happily in your RAM, and I believe there'd be no difference.

The speed loss would be caused by loading your vertices, but I doubt it'd be noticable with small numbers like hundreds of vertices. Unless you load something like 3 million vertices or so ( which is impossible to hardcode, I think ) there'll be no difference.