Groups > comp.sys.apple2.programmer > #181

Re: Converting HGR to DHGR

From	"ict@ccess" <gids.rs@sasktel.net>
Newsgroups	comp.sys.apple2.programmer
Subject	Re: Converting HGR to DHGR
Date	2012-02-19 19:05 -0800
Organization	http://groups.google.com
Message-ID	<7dbf3503-39ae-412c-a5fc-ee7a2abcec01@m3g2000pbi.googlegroups.com> (permalink)
References	<1cac2bf1-26df-4733-9a87-5a90a5e7c612@o9g2000yqa.googlegroups.com>

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On Jan 17, 9:32 am, BLuRry <brendan.rob...@gmail.com> wrote:
> I thought I had it figured out, but for some reason purple and green
> are flipped around.  Does anyone have a good algorithm for converting
> HGR to DHGR, accounting for half-pixels and other funky behaviors of
> the video scanner?
>
> JACE DHGR renderer is great and now lores and dhgr look spot-on (well,
> maybe not as spot-on as open emulator, but well enough for me).
> However, HGR has the frindge and NTSC artifacts correct but the low-
> order colors need help.  I really don't want to have to hack an
> alternate palette for green/purple.  Suggestions?
>
> -Brendan

If still interested, I have 3 programs for converting HGR to DHGR.

One that does not take color into account, best for B/W
One that shows color correctly but only displays on half of the DHGR
screen
And the last one shows color correctly and fills the whole DHGR screen

Rob

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Thread

Converting HGR to DHGR BLuRry <brendan.robert@gmail.com> - 2012-01-17 07:32 -0800
  Re: Converting HGR to DHGR Vladimir Ivanov <vladitx@XXXyahooXXX.com> - 2012-01-17 18:20 +0200
    Re: Converting HGR to DHGR Antoine Vignau <antoine.vignau@laposte.net> - 2012-01-17 09:10 -0800
    Re: Converting HGR to DHGR BLuRry <brendan.robert@gmail.com> - 2012-01-17 09:26 -0800
      Re: Converting HGR to DHGR Vladimir Ivanov <vladitx@XXXyahooXXX.com> - 2012-01-18 11:17 +0200
        Re: Converting HGR to DHGR BLuRry <brendan.robert@gmail.com> - 2012-01-18 11:04 -0800
          Re: Converting HGR to DHGR BLuRry <brendan.robert@gmail.com> - 2012-01-18 20:34 -0800
            Re: Converting HGR to DHGR Vladimir Ivanov <vladitx@XXXyahooXXX.com> - 2012-01-19 13:12 +0200
              Re: Converting HGR to DHGR Jerry <awanderin@yahoo.ca> - 2012-01-21 02:53 -0700
                Re: Converting HGR to DHGR Vladimir Ivanov <vladitx@XXXyahooXXX.com> - 2012-01-21 18:48 +0200
                Re: Converting HGR to DHGR Daniel Kruszyna <dan@krue.net> - 2012-02-18 20:58 +0000
                Re: Converting HGR to DHGR BLuRry <brendan.robert@gmail.com> - 2012-02-18 15:00 -0800
  Re: Converting HGR to DHGR "ict@ccess" <gids.rs@sasktel.net> - 2012-02-19 19:05 -0800

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