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Atari coding BBS
| Mapping question |
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Posted by: Laurent / Thadoss
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May,08.2014-16:22
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Hi all,
I've just found some old lame code of mine written 20 years ago ;) that I manages to compile.
It was a 3d texture mapping code (68030).
I gave a quick look at the pixel rendering part, and I think there are possibilities to do faster than what I did (8 instructions per pixel :/ )
MOVE D2,D0 ; YT
LSL #8,D0 ; YT*256
ADD D1,D0 ; +XT
MOVE (A6,D0.L*2),(A2)+ ; display the pixel on screen
ADD.L D4,D1 ; XT+DXT/DX
ADDX D6,D1 ; +CARRY
ADD.L D5,D2 ; YT+DYT/DX
ADDX D6,D2 ; +CARRY
Can you point me on a better algo (less instructions per point) ?
Ps: It's just for my culture ;)
Thanks
Laurent
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[All messages in this thread] [Start new thread]
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Topic
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Posted by
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Date
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Mapping question
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Laurent / Thadoss
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May,08.2014-16:22
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Re: Mapping question
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dml
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May,08.2014-19:04
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Re: Mapping question
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Laurent / Thadoss
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May,08.2014-20:39
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Re: Mapping question
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dml
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May,09.2014-00:27
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Re: Mapping question
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Laurent / Thadoss
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May,08.2014-22:24
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Re: Mapping question
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Defjam
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May,12.2014-16:57
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Re: Mapping question
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dml
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May,13.2014-10:41
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Re: Mapping question
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p01
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Jan,06.2015-00:01
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Re: Mapping question
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evil
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Jan,06.2015-18:36
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Re: Mapping question
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Laurent / Thadoss
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Jan,06.2015-21:58
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Re: Mapping question
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p01
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Jan,06.2015-23:17
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Re: Mapping question
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p01
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Jan,09.2015-13:46
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Re: Mapping question
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Orion_
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Jan,09.2015-17:15
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Re: Mapping question
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Cyg
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Jan,09.2015-23:34
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Re: Mapping question
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Patrice Mandin
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May,13.2014-21:44
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Re: Mapping question
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Laurent / Thadoss
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May,14.2014-22:08
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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