Using Start3D() outside of main loop

[Nituvious]

Are there any bad things that can happen if I use Start3D() OUTSIDE of the main loop?
For example, what is the difference between:

Code: Select all

Start3D();
repeat;
	; do something
until endResult.l;
Stop3D();

VS

Code: Select all

repeat
	Start3D();
	;do something
	Stop3D();
until endResult.l

I don't notice anything bad happening when I start and end outside of the main loop, but I really would like to know how the PB guru's do it.

[PMV]

what do you want to do?
Stop3D() needs to be called before FlipBuffers().
And FlipBuffers() is normally inside of a main-loop.

MFG PMV

[Nituvious]

Well, I don't want to take a performance hit from having it start and stop within my main loop opposed to only calling it once before and after the loop.

[Shield]

It needs to be called for every frame, you just have to go with it.
The graphics API equivalent requires it.

[Nituvious]

Ah, alright.

[Shield]

Also, there is no real performance hit anyway as long as you only call it once per frame.

[PMV]

Well, I don't want to take a performance hit from having it start and stop within my main loop opposed to only calling it once before and after the loop.

I dont want to use RenderWorld(), too ... because in my game this call needs
over 5ms up to open end.