Re: [Tuxnes-devel] Mid-scanline updates?

[Mike M. <mel...@pc...>]

On Wed, 18 Apr 2001, Jim Ursetto wrote:

> Do PPU updates made during a scanline take effect immediately?  My
> understanding is no---they are either disallowed or delayed until hblank or
> vblank.  I ask because if this is the case, I can optimize the rendering
> code in a way that is a huge win for the dreamcast.  

	I haven't been too heavily involved in the rendering code but I've
always assumed that the rendering granularity was at the individual lines
(I believe earlier versions of Nestra were screen-based). It sounds as if
you know more about the rendering code at this point than me.

	Also, what are some good web resources on programming the
Dreamcast? That seems pretty interesting. And I know Sega was supposed to
be unloading their DC stuff soon. I'll have to check if the prices have
plumetted yet and maybe pick up one of those with the PPC.

-- 
	-Mike Melanson