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From: Lewis_Evans@Playstation.sony.com
Newsgroups: scea.yaroze.programming.3d_graphics
Subject: Clipping problem
Date: 23 Feb 1998 10:13:42 -0000
Organization: Sony Computer Entertainment Europe - 119.SS5
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From: Lewis_Evans@Playstation.sony.com
To: news@playstation.co.uk




I want to display a 3D cylinder.  I also need the view to be completely
inside it.  Whenever I move the cylinder closer to the screen, it starts
to really slow down.  The slowdown causes the game to be unplayable in
640x480, the resolution at which it needs to run.  I've tried messing
around with the cylinder's coordinates, the projection distance, and
almost everything else.  What can I do to solve this problem?
Manny Najera



There are several things you could try to speed up the draw of the
cylinder.
Making it smaller; removing any subdivision settings; if polys are
textured,
ensuring that their textures fit into the texture cache, and minimise the
number
of textures in total; convert gouraud-shaded/textured to
flat-gouraud-textured;
turning off flat-lighting and fogging in the GsDOBJ2 handler attribute;
also, reduce the number of polys in the cylinder.

There are real limits to how much things can be optimised; you may need to
look
at reducing frame rate to accomodate the look and feel you want for the
game.
If that's the case, you need to either reduce screen resolution, since
640x480
requires that the drawing work executes within a frame.

     Lewis