Path: chuka.playstation.co.uk!news
From: "Mark Theyer" <theyergfx@ozemail.com.au>
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Drawing the same TMD <n> times each frame
Date: Mon, 20 Sep 1999 15:31:40 +1000
Organization: PlayStation Net Yaroze (SCEE)
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Hi

I am drawing the same TMD model multiple times each frame, each in a
different location, using a new handler for each sort call.

I have eliminated all setup Gs function calls (gsLinkObject4, etc) so
that I only need to use the single function call, gsSortObject4() to draw
each copy of the TMD, using the different handlers.

Unfortunately I still notice a performance hit when using this method. If
I create multiple copies of the TMD in memory the performance is fine
but using the one TMD, drawn multiple times with different handlers slows
the PSX down heaps. In my example the frame rate drops from 30fps
to 20fps.

I do not wish to create multiple copies of the TMD as it will use too much
memory.

Any idea why this happens?

Thanks


Mark
theyergfx@ozemail.com.au