PSP Art specification

dev_586

I am trying to do a single level car racing game in PSP .I wanted to know what should be the polycount size & texture size for a single level ?How many types maps (normal maps,HDRI maps,reflection maps,specular maps,bump maps etc.) ?

Presently for my level I am Having 25000 poly & textures 256x256,128x128,64x64 dimensions.

Kindly let me know.

ZacD

How many textures? 25000 sounds a little high (I'm thinking about wipeout pure and how the game looked) I've only heard actual numbers about characters, wish I could help more.

LEViATHAN

The PSP runs at 480*272, so 256^2 textures is excessive for a racing game, unless you're going to play it from the driver's perspective, MAYBE. You only have 2MB available for textures, so either downsize them or start cutting.
For the PSP you'll pretty much be using diffuse only. If you have a good, optimized engine them maybe with some simple reflections (not sure about spec maps) and faked HDR (see Syphon Filter), you can forget about the rest.

danr

"You only have 2mb for textures" ... Not really, you should have whatever memory is given over to textures in the engine, cos its actually too slow to put them into vram.

It all comes down to memory on psp really, and what you can wring out of it : it'll render far more than 25k polys (triple that) but that amount of geometry data might be the limit of what you can load at once, depending what else is in memory. Even then, it's tricky to nail this down to polygon count - psp games will usually use tri-stripping and all manner of compression techniques on top of that, depending on how good your coders are. And then its a different kettle of fish again if you're streaming it (for the record, total pain in the arse on psp)

How many polys in a piece of string? On psp its more important than most platforms to know how long your string is.

dev_586

700 t0 1500 polys we are having in a string.

we are getting 19 to 29 frames per sec but its flickering while rendering multiple objects in a row like 2 to 3 buildings,road,footpath,trees,lightpost. How to stop the flickering ?

Is there any procedure to render the nearest objects 100 percent & far objects 50 percent or even more less in coding ? could u please give me a briefing about rendering & lighting ?

(Presently the level polycount is 12000k approx.Textures are 64x64 to 128x128
total no. of textures 30 in png format)

danr

You need to talk to programmers, there's no art solutions to your problems