Double Resolution! At a low performance cost

SP4CEBAR 2022-07-29 20:23 (Edited)

This program converts the two 20x16 cell backgrounds to one 40x32 cell background

All 256 characters and 8 palettes can still be used
the idle CPU usage is 8%
It has an API with functions similar to NX's functions:
- M_CELL(X,Y,CHAR)
- M_TINT(X,Y,PAL)
- M_BG_FILL(X1,Y1,X2,Y2,CHAR)
- M_BG_TINT(X1,Y1,X2,Y2,PAL)
- M_CLS(CHAR)

It works by skipping every second raster so that the screen covers the 32 vertical cells, it uses the second background to fit two horizontal cells inside a cell

Double Resolution.nx | Open in app

2024-07-15 20:07

Double Resolution.nx | Open in app

2022-07-31 08:52

Double Resolution.nx | Open in app

2022-07-29 20:23

SP4CEBAR 2022-07-30 15:20

I'm porting my Lowres Tetris version right now!

SP4CEBAR 2022-07-30 15:44 (Edited)

It's the most complicated program I ever tried to port...

SP4CEBAR 2022-07-30 15:50

I think the best approach is to make a subprogram for every lowres-specific command I need

G-9 2022-07-30 22:58

i wonder what tetris lowres looked like

SP4CEBAR 2022-07-31 08:51 (Edited)

I posted it on LowresCoder's forums, but here are some videos:
gameplay, mechanics

SP4CEBAR 2022-07-31 08:55

I fixed a small bug with this program (this NX graphics demo) that allows you to drag negative boxes (swapped variables were returned by a subprogram)

nathanielbabiak 2022-12-08 21:30

OK, I'm impressed. This is simple, elegant, and it works great!

SP4CEBAR 2022-12-09 12:18

Thank you!

SP4CEBAR 2024-07-15 20:08 (Edited)

Update:

lowered the idle performance cost from 8% down to 6% by using two poke commands instead of two scroll commands.