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SubjectRe: Tile Renderers Reply to this message
Posted byfinaldave
Posted on07/27/04 04:22 PM



> > I'm working on Giga/PicoDrive, a Megadrive emulator, a bit at the moment. When
> I
> > did a few measurements a few weeks ago I found 4ms was used on cpu, and 20ms
> > used on graphics rendering on a GP32.
> >
> > So I thought I may take a bit of time to jump up and down on the tile
> rendering
> > and make it a bit more efficent. It's a line by line renderer at the moment,
> > which I'm keen to hold onto for at long as possible because it makes raster
> > effects so easy. But I may have to lose that at some point or at least make
> two
> > graphics engines.
>
> Why? You could simply use a normal tile engine and add some stuff to make
> clipping efficient, e.g. only parse the needed parts of the tilemap.
>

The Megadrive has per line offset... I'm not sure how this effects the choice of a line-based renderer and a tile-based renderer... I remember have a bit of a nightmare in Final Burn with a tile based one!

I'm interested by Bart's comment that a line-based renderer may not be too much slower than a tile-based one after all - and I think that front-to-back rendering and other optmisations may well be easier on a line by line basis.

Had anyone actually compared a line-based and tile-based engine and the performance difference?

If it is minimal, is there any great advantage to tile based engines at all??


You learn something old everyday...


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Entire Thread
Subject  Posted byPosted On
*Tile Renderers  finaldave07/26/04 10:21 AM
.*Re: Tile Renderers  erikduijs07/28/04 09:46 AM
..*Re: Tile Renderers  finaldave07/28/04 05:24 PM
...*Re: Tile Renderers  Bart T.07/28/04 09:10 PM
....*Re: Tile Renderers  finaldave07/29/04 07:43 AM
.....*Re: Tile Renderers  Bart T.07/29/04 10:39 AM
......*Re: Tile Renderers  Jan_Klaassen07/29/04 11:32 AM
.......*Re: Tile Renderers  Bart T.07/29/04 02:54 PM
........*Re: Tile Renderers  finaldave07/29/04 06:46 PM
........*Re: Tile Renderers  Jan_Klaassen07/29/04 06:11 PM
.*Re: Tile Renderers  Hyde07/27/04 04:04 PM
..*Re: Tile Renderers  finaldave07/27/04 04:27 PM
.*Re: Tile Renderers  Jan_Klaassen07/27/04 09:58 AM
...Re: Tile Renderers  finaldave07/27/04 04:22 PM
...*Re: Tile Renderers  Jan_Klaassen07/28/04 11:00 AM
.*Re: Tile Renderers  Bart T.07/27/04 00:38 AM
..*Re: Tile Renderers  Stainless01/12/06 11:58 AM