VGA 3D Rotate

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edfed

Joined: 20 Feb 2006
Posts: 4242
Location: 2018

edfed

thanks for wow, but it's not a real good code
full of bugs

it will be the gui of my os

in the past, oses begans in text mode to finally be in graphic mode
me i start in graphic mode and after i'll use 3D mode
3d like in good reflexions games, chess 3d, sodoku 3d, etc,
a calm 3d gui, not an over exited 3d interface as they all try to make
a 3DOS

23 Nov 2007, 06:54

Dex4u

Joined: 08 Feb 2005
Posts: 1601
Location: web

Dex4u

Cool programs, they all run fine on MiniDos.

23 Nov 2007, 15:05

edfed

Joined: 20 Feb 2006
Posts: 4242
Location: 2018

edfed

really?

23 Nov 2007, 22:44

DJ Mauretto

Joined: 14 Mar 2007
Posts: 464
Location: Rome,Italy

DJ Mauretto

Hello

I written another example about 3D with translation Wink

Have Fun!!

24 Nov 2007, 13:12

edfed

Joined: 20 Feb 2006
Posts: 4242
Location: 2018

edfed

how to use dwords as integers,
and convert integers into fp?
add integers to fp?
imul fp with integers?
idiv fp with integers?

25 Nov 2007, 13:46

DJ Mauretto

Joined: 14 Mar 2007
Posts: 464
Location: Rome,Italy

DJ Mauretto

Quote:

convert integers into fp?

Code:

 FILD [Variable]

FPU automatic convert in float point.

Quote:

add integers to fp?
imul fp with integers?
idiv fp with integers?

Code:

 FIADD  [IntegerVariable]
 FIMUL  [IntegerVariable]
 FIDIV   [IntegerVariable]

FPU automatic convert in float point and ADD,IMUL,IDIV Wink

25 Nov 2007, 14:10

edfed

Joined: 20 Feb 2006
Posts: 4242
Location: 2018

edfed

for exemple :
int 1000->fp 10^3
int 1->fp 1
it works?????
in this case i'll try to make fp computation in my engine.
it's in 32 bit fixed point and does have a limit that is a bug.

25 Nov 2007, 14:27

DJ Mauretto

Joined: 14 Mar 2007
Posts: 464
Location: Rome,Italy

DJ Mauretto

Please post some code or some formula,
i show you an example computation with FPU Wink

25 Nov 2007, 15:31

AlexP

Joined: 14 Nov 2007
Posts: 561
Location: Out the window. Yes, that one.

AlexP

WOw.. Nice job.. Didn't even know that kind of stuff could be created in asm, but then again I have never tried any 3D graphics.. Have fun

25 Nov 2007, 16:26

bitRAKE

Joined: 21 Jul 2003
Posts: 3044
Location: vpcmipstrm

bitRAKE

Cool juggling like effect with the balls - kind of seem like they are sliding on an imaginary glass surface. Can't wait to see what you can do with more colors. Smile

25 Nov 2007, 16:27

Picnic

Joined: 05 May 2007
Posts: 1288
Location: Paradise Falls

Picnic

Great balls DJ Mauretto.

25 Nov 2007, 16:33

rhyno_dagreat

Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau

rhyno_dagreat

thimis wrote:

Great balls DJ Mauretto.

I apologize for my lack of professionalism in this post, but for some reason that sounds so wrong. Lol. Twisted Evil

25 Nov 2007, 17:33

Picnic

Joined: 05 May 2007
Posts: 1288
Location: Paradise Falls

Picnic

sorry i didn't mean it that way.. Laughing

25 Nov 2007, 18:39

edfed

Joined: 20 Feb 2006
Posts: 4242
Location: 2018

edfed

dj-mauretto:
ok! look at this

Description:	updated with more comments all by me, so hard to read!	Download
Filename:	3d_prossessing.zip
Filesize:	44.83 KB
Downloaded:	135 Time(s)

_________________
Smile

fool gitlab fasmstuff
gitlab foolstuff

25 Nov 2007, 23:49

DJ Mauretto

Joined: 14 Mar 2007
Posts: 464
Location: Rome,Italy

DJ Mauretto

I mean simply formula to show you use of FPU ,not whole programs Embarassed

I don't have time to look at your source

26 Nov 2007, 10:48

edfed

Joined: 20 Feb 2006
Posts: 4242
Location: 2018

edfed

hé hé the use of fpu is at 3dobject.inc

26 Nov 2007, 12:29

DJ Mauretto

Joined: 14 Mar 2007
Posts: 464
Location: Rome,Italy

DJ Mauretto

you first must decide if use integer or float point,then only instruction
that you need are:

Code:

FILD     [integerVariable]    ;load integer variable from memory
FLD      [floatVariable]        ;load float point variable from memory
FIMUL  [integerVariable]     ; mutiply st with integer variable in memory
FMUL   [floatVariable]         ;multiply st with float point variable in memory
FIDIV  [integerVariable]      ;divide st with integer variable in memory
FDIV   [floatVariable]          ;divide st with float point variable in memory
FSINCOS                           ;cos ST  sin ST
FIADD
FADD
FISUB
FSUB
FLDPI                              ; load constant PI
FLDZ                               ; load zero
FLD1                               ; load 1

etc...

Note that you can work with FPU stack,with more speed
Why you don't learn some FPU stuff like this? http://www.website.masmforum.com/tutorials/fptute/index.html

26 Nov 2007, 14:52

edfed

Joined: 20 Feb 2006
Posts: 4242
Location: 2018

edfed

fsincos is based on PI?
thanks
i'll try
i need finit?
all fp instruction push / pop the fp stack; thats why i didn't use it.

26 Nov 2007, 17:05

edfed

Joined: 20 Feb 2006
Posts: 4242
Location: 2018

edfed

grrrrr it's hard to code with fpu
i never know where are my datas.
it's buggy,each time i add a fpu instruction, my program becomes more buggy.
nothing appears now!
i'll see that very later!

26 Nov 2007, 17:54

DJ Mauretto

Joined: 14 Mar 2007
Posts: 464
Location: Rome,Italy

DJ Mauretto

Quote:

fsincos is based on PI?

FSINCOS is based on Angle in radian loaded on ST
Radian = Degree*PI/180

Quote:

i need finit?

Only at start for init Coprocessor

Quote:

all fp instruction push / pop the fp stack; thats why i didn't use it.

What is the problem with FPU Stack?

26 Nov 2007, 17:57

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