Search found 76 matches

by jhhoward
Tue Jul 21, 2015 1:08 pm
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

Even with your 15 colors blitter working, I can't wrap my head around how/why it works. :oops: Do you think you could write up something on the wiki explaining it, with the help of some graphics perhaps\? Nothing fancy, just something the maintainers will be able to refer to to understand. It does ...
by jhhoward
Mon Jul 20, 2015 1:06 pm
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

Nice work Alec, mode 13 is making some really good progress! I didn't expect that you would have scrolling working so soon! Shifting the base addresses sounds like a good idea and should make things less complicated now that all indices are valid. I think we should be able to make some big performan...
by jhhoward
Fri Jul 17, 2015 2:03 pm
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

The bank switching for flash tiles will be a really nice addition! I suppose that they can exist anywhere in program memory now as long as they are 4K aligned. I did some light testing with the performance of my sprite blitter with the bouncing Marios demo. Currently the C implementation can draw up...
by jhhoward
Thu Jul 16, 2015 9:28 pm
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

Done a bit more work on the 15 colour sprite blitter and it is now possible to place sprites at any location. I've added a new demo project for the 15 colour demo which I've attached to this post. It's two bouncing Marios with a cycling background colour. I put up a pull request on github. I've noti...
by jhhoward
Thu Jul 16, 2015 1:00 pm
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

15 colors, woot!! :mrgreen: I have merged your pull request. About the transparent color. What about having it fixed to index zero? I think it may speed up masking (yet to test). It seems having any fixed value is not perfect either, since depending on the sprite you may well need that color. Just ...
by jhhoward
Wed Jul 15, 2015 8:42 am
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

Nice work Alec, things are really coming along now with this mode. Your idea about dynamically using RAM sounds interesting and could be really useful for some games. I did a bit of work with the 15 colour mode, here's Mario with all his colours: :D http://i.imgur.com/p3vrLgJ.png I noticed a couple ...
by jhhoward
Fri Jul 10, 2015 10:43 am
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

OK I'll leave the initial 3bpp blitter for you to implement. I've got a few thoughts about the remaining things that need to be done. Firstly I'll have to make some changes to gconvert for sprite transparency. I was thinking we can have a new attribute 'paletteColor' which will default to 254 / 0xFE...
by jhhoward
Thu Jul 09, 2015 10:43 am
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

Ah I didn't realise that the whole rendering loop was implemented! I have some code for a basic sprite blitter which doesn't support flipping but it should be a good start. I'll try it out when I get some time. As the number of flash tiles is quite limited (and not swappable) what do you think about...
by jhhoward
Wed Jul 08, 2015 8:10 am
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

For the 15 color mode what indicates clear color, and does it make it 14 usable colors plus 1 reserved for color key? Working on a game pallet in anticipation for success of the 15 color method :) My current plan is that 15 colour mode will have 15 usable colours for both background tiles and sprit...
by jhhoward
Mon Jul 06, 2015 9:02 pm
Forum: Programming & Software
Topic: Palettization - color; colour; couleur; färg; farbe...
Replies: 144
Views: 73253

Re: Palettization - color; colour; couleur; färg; farbe...

Whether it is worth keeping the 8 colour mode or not will depend on how fast we can make the sprite blitter. The 15 colour mode will need extra look up tables which will take up around 750 bytes of progmem and will cost more cycles compared to the 8 colour version. Once we have a working ram loop we...