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Forums > CSDb Discussions > Spectrum vs C64 ;-)
2005-08-01 12:03
Scout

Registered: Dec 2002
Posts: 1570
Spectrum vs C64 ;-)

Just for fun...

http://www.wayoftherodent.com/guests/bob_c64.htm

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2005-08-09 08:26
Graham
Account closed

Registered: Dec 2002
Posts: 990
Oswald: Yes sure, but on the more time consuming effects most of the time is spent on the effect itself and not the 4x4 mode. Look at the gouraud in Oneder. 95% of the time is spent on the edge calculations, the gouraud filling itself is lightning fast. Also, very often the Speccy coders use a simple trick to reduce the size of the frame buffer: They don't render every rasterline, but every 2nd or even every 4th. With a shifting offset this adds some kind of motion blur to the effect.
2005-08-09 08:31
Graham
Account closed

Registered: Dec 2002
Posts: 990
@Raf: Yep, but the same is true for screenshots of C64 interlace pictures (IFLI or MCI), in reality many of them don't look half as good as on screenshot.
2005-08-09 10:36
Radiant

Registered: Sep 2004
Posts: 639
Just a slightly related note: Proper displaying of interlaced pictures could of course be done using GIF animation. ;-)
2005-08-09 11:35
Graham
Account closed

Registered: Dec 2002
Posts: 990
"proper" = 50 fps on a 50 fps screenmode. I doubt that GIF animations can do that.
2005-08-09 12:01
Radiant

Registered: Sep 2004
Posts: 639
Quote: "proper" = 50 fps on a 50 fps screenmode. I doubt that GIF animations can do that.

True, you'd have to settle for 50 fps @ whatever screenmode.
2005-08-09 12:09
Graham
Account closed

Registered: Dec 2002
Posts: 990
Nopes, 50 fps on a 60 Hz screenmode looks like shit.
Sometimes a frame will be displayed double:

121211212122121211212122

instead of:

121212121212121212121212
2005-08-09 12:35
algorithm

Registered: May 2002
Posts: 705
Why not just grab first frame & second frame using emulator and then to mix the two using a program such as photoshop
2005-08-09 12:40
Radiant

Registered: Sep 2004
Posts: 639
Quote: Nopes, 50 fps on a 60 Hz screenmode looks like shit.
Sometimes a frame will be displayed double:

121211212122121211212122

instead of:

121212121212121212121212


Yeah, I know, and it's a major problem when running emulators. I really wasn't that serious, as indicated by the smiley... But still, would it look worse than in, say, VICE?
2005-08-09 12:52
Scout

Registered: Dec 2002
Posts: 1570
What have I done?!
Krill & Graham are discussing Z80 assembler on #c64 now...

I never post a Speccy topic again! ;-)

R.
---
-= Silicon Ltd. =-
http://www.deco-design.com/scl
2005-08-09 12:57
Graham
Account closed

Registered: Dec 2002
Posts: 990
Quote: Why not just grab first frame & second frame using emulator and then to mix the two using a program such as photoshop

Yes exactly, and that is done already. I was pointing out that the blending was done by PC tools and not the Spectrum (or C64) itself. I replied to:

"well... a screenshot I saw was clearly looking like two pictures blended" (Raf)
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