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Meshes vs. Custom Models

Started by ttigue Sep 2, 2003 at 1:40 PM 2 replies 450+ views

Original Post

Sep 2, 2003 at 1:40 PM

Hello - I''m pretty new to Direct3d. I was wondering if it is faster to use the .x file meshes & formats that microsoft provides or to use custom user models. If i use custom user models is their a materials buffer i can use. I know that direct3d Api provides a vertex buffer and index buffer which, if possible, will be created in video memory. but do i have to implement code to change the material for every face that is drawn? Thank you Tyler

Hawkeye3

Sep 2, 2003 at 4:39 PM

If you plan on using your own model format, you will have to handle all of the buffer management on your own ( how they are filled, released, and used )

psykr

Sep 2, 2003 at 10:13 PM

The ID3DXBuffer interface that the samples use to load .x files isn''t really needed.. in Zen of Direct3D, the author never uses the interface, and instead just uses new D3DMATERIAL8[] as the buffer.

ttigue

Sep 3, 2003 at 3:32 PM

So - if i set up a vertex buffer and an index buffer

i could do the following-
(i know this isn''t the exact coding - but i don''t have the api in front of me)

draw_indexed_primitive(vb, ib, .....)

but if i want to add materials i have to create my own materials buffer and then do the following-

for (i = 0; i < num_indices; i++)
{ set_material->material;
draw_primitive(vb, ib[i])
}

is that right? is it faster just to use a mesh?

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