I didn't look at the code, but just ran 
the exe. Fading runs very smooth. I got 
about 60 fps, but I have a old voodoo 3 
card. Well done!

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It took me a while, but I think I 
finally see what this is doing.. far 
out stuff.. am i reading this right.. 
are you converting the .asm into its 
native hex code?

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It would be nice to have the ASM code 
included in the source. Otherwise a 
great idea. How do you pass Paramters 
to the ASM stuff ?

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I don't understand assembler, and I 
don't understand how you use VB and 
assembler together either. But I do 
understand that 50 FPS alpha blending 
is cool. Well done man.

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hey, Dmitry Apukhtin ... where do you 
live?

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sir, you truly are the king of kings

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This is very interesting and could be 
extremely usefull, but even for fairly 
experienced VB programmers, it is 
extremely cryptic. I give it an 
excellent rating because that is what 
it is, but I frown upon your 
commenting. It seems to me that a post 
like this to a site like this is more 
showing off than it is a helpfull 
tutorial... I am bitching because I 
would love to know how this works, but 
I'm afraid that even with a good 
ammount of time put in, I will still 
not understand it. I'm sure others feel 
the same way. Anyway, extremely good 
job - I would like to learn from 
it.
if you have any sort of further 
information on the web on how to start 
out something like this, or could 
possibly forward us (PSC users) to more 
information, please do so. Thanks!

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I'm not sure if the author is going to 
read this or not... I've been looking 
over the code for a while now (its 4 in 
the morning) and I understand the logic 
behind it... copying the instructions 
you formed into memory, but what I do 
not understand is where the strings you 
use in the 'XFade' sub, the 'RMChar' 
sub, etc. come from.

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Hello Dmitry,
I mean this is a good 
job.
I give you a Excellent rating for 
this job but I´m not understand the 
code.
Make new Examples and we can 
learn from you :-)
>
Regards Michael

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Ow, your code hurt my head. :-P 
The 
code ran at 10 fps on my 233 mhz 
Pentium II running Windows 95, 256 megs 
ram.
I have concerns about how 
portable to different machines it is, 
considering it's done in assembler. In 
addition, the speed is quite good 
enough to use for games (at least for 
older machines.)
In short, it's 
great that you managed to do assembler 
in VB, but ... why bother? :-P I can 
get > 100 fps on this machine, using 
DirectX and DirectDraw (but not doing 
alpha fades.) Show me a fast 
replacement for GDI transparent 
blitting, that doesn't use DirectX, and 
I'll sit up and take a closer look.

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I gave you a vote of excellent because 
yours is one of the first, if not the 
first post of its kind.  And as always 
we should award original ideas and not 
the same tired mp3 players or message 
box makers that get submitted every 
day.  The code is clearly out of my 
league, but it ran flawlessly at 50 
fps, and looks great! 

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hey guys thanx for comments.
in fact, 
I was going to describe technique of 
this "technology" (incapsulating 
machine codes in VB) step by steb, 
including debugging VB stuff in VC IDE, 
but wanted to see first if it worth to, 
if there are enough understanding and 
eager people. I won't say so far... sad 
truth is that people that are able to 
"communicate" with PC on this level are 
usually C-guys, not VB... or maybe it 
was wrong place to post to...

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anyway, Warren,Simon,Justin (especially 
:), michael,rokinroj - thanx 
guys!
BRL - why? 8-) wanna tell me 
in face what do you think about me? 
hehe :)
Richard - my respects. you 
are that kind of programmers I was 
counting on posting this stuff. hope 
you enjoyed breaking apart this sample 
:) "these string" came from native 
assembler code-bytes. in short: I write 
and debug asm procedure in VC 
environment and then do convert 
resulting bytes (machine codes) into 
their hex representations - each pair 
of chars in these strings are one code 
byte actually. keep going! RTFM! MSDN 
is the only and best source on 
knowledge in MS-world.

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Ulli - thanx man for first real 
question. that's not problem, in fact,  
I do not _pass_ parameters :) it's VB 
compiler's business to generate calling 
code which PUSH'es stuff in stack, I 
just pull DWORD's from stack and use 
them in asm code. for example, first 
param are in stack by [ESP+4], second - 
[ESP+8] etc so I do "mov EAX,[ESP+4]" 
etc. as for ASM source - man, what for? 
besides that it is as simple as 
lodsb/mul/stos in loop (for xFade 
proc), the point of this post wasn't to 
show cool asm tricks.

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Kamilche - oh, boy. why bother??? sorry 
(nothing personal_ - but why bother 
writing lame comments, tell me. he 
could make 100 fps not doing 
a/blending. huh. u know what, I could 
do 1000fps bouncing one pixel around. 
so what? u couldn't even notice that 
since most VGA cards runs max 120Hz of 
V/refresh rate. go buy your next 3D 
accel and tell everyone how'd _you_ 
make your 100 fps. oh, men. you didn't 
even realize that this post wasn't 
about pictures nor animations.
ok, 
too much typing for today :)
sorry for 
my poor english, if any.
thanx 
everybody

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This is a good example.  If possible I 
would like you to create a more 
detailed example on how to copy asm 
code to the memory, hows it works and 
how it relates to vb.  Good code.

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Very cool and very fast!

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Interresting Project.I've also 
coded
in ASM since DOS-Times.How do 
you extract the Hex-values out of the 
ASM-Code ?  MOVEB AL,BL  = ????
JMP 
ADRESS  = ????

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This is quite good..
only i got ~20fps 
on my computer..
I have an athlon 
700, gforce 256..
It may be because 
i was running win2k at the time of the 
test, and since the gfx support isnt 
very good..
I'll try it on win98 and 
see how it goes..
It appeared to 
flicker at a very very fast rate as 
well..

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Nathan, switch your display colors to 
more than 256

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Let me note some things ...
* This 
stuff is not all that mysterious, the 
techniques used have been around for 
some years (compare the work of David 
Brebner or my alphablitter at 
www.inode.at/nls)
* There is a great 
source on ASM+VB, the site of Patrice 
Scribe at www.chez.com/scribe
* As 
long as the assembler code hasnt been 
optimized to use MMX instructions like 
quadmoves or PIII specifics, it should 
run on any Pentium (eg, my latest ASM 
alpha engine uses MMX and therefore 
only runs on PII or above)
* Anyway, 
great work, you've got my vote, though 
I would appreciate a look at your ASM 
code (difficult to evaluate just how 
good youve done w/o it) 

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For everyone that wants the ASM code 
(which is missing here) you can 
download the NASM disassembler 
from
ftp://ftp.simtel.net/pub/simteln
et/msdos/asmutl/nasm097s.zip
then 
you can run the ndisasmw -u asmcode.asm 
> asmcode.txt
where asmcode.asm is a 
textfile with the machine code (this is 
the hexadecimal values, converted to 
binary data, in the asm class file).

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I've been doing enough assembler to 
understand what ur doing... copying 
binary asm to memory and replacing 
methods adresses by the adresses of 
your asm... really neat :) people 
should add more code like this... I had 
already tried replacing proc bodies, 
but had a lot of problems... your 
solution is fast enough for me... now I 
bang my head on the wall not having 
thought of it before ;P

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You did goooooooood man.
Your code 
knocked me off my feet.
I found the 
code surfing for image processing code 
for VB. Your code will forever be a 
friend of mine.
Do some more.........

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After looking at this procedure, and 
with my limited knowledge of API, I see 
what you're doing...
It's nice 
work.
Couldn't someone use something 
similar to this In Visual Basic to 
script parts of games and convert them 
to Machine code and directly run them 
(after being converted to the correct 
hexadecimal base, of course)?

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Sorry, bro, but the fading sucked.  Too 
much flicker going on.  Look at it from 
a Users point of view.  The Users don't 
give a rat's a§§ about what you did 
with your coding and/or converting.  
They're going to look at it and say to 
themselves ''What's the deal with the 
flickering?''.  Fix the flicker, and 
you've got it.

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I understand how it works, but I have 
one question: How can I learn Assembly? 
I have been programming VB for 5 years, 
and I learned C. I think that this is 
just what VB needs, but I don't know 
how to do it. Not very many resources 
are just lying around any more. It 
makes it hard for those of us that are 
curious.

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wow just because you asked ;) Nice job.

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Get a book on assembler for $50 it is 
hard reading but you will learn allot. 
I have a feeling this code uses a 
windows API call called by machiene 
code. I haven't looked at example yet. 
By the way, I am a c++ programmer.

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For those of you that want to wrap you 
gray matter around ASM, you can go to 
the guru of ASM's online book at: 
http://webster.cs.ucr.edu/Page_asm/Artof
Assembly/ArtofAsm.html . And for those 
of you who can't stay online you can 
follow the links to the main page and 
download the PS version. 

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I think this code is horrible because I 
replaced your pictures with my own 
pictures, and when your program faded 
them, the pictures looked so bad, they 
looked all streached and corrupted.

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I saw your comment of explaining how 
this works in detail above. I have 
lately become interested in this type 
of stuff and would appreciate if you 
did explain it all. I got a solid 60 
fps on my athlon950 w/gforce2 and 
256megs of ram no problem. Great idea. 
nickbehel@aol.com

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i must say this is truly fascinating.  
it's something i've been wanting to 
learn but looks too complicated

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oh yeah i get about 9fps on this k6-2 
500 

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Interesting hack, you have my respect.

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All I got to say is.... WHEW yes 
headache   :)  good job.. *ouch*  
-James-

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I am just started Visual Basic 6. I am 
always looking around on this site to 
find something nice to use in my app's 
and i found this! It is veary 
good!
Thanks!

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usualy i d'ont vote but,
This one is 
AWESOME

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These techniques are obsolete. Assembly 
is ancient, please let go of the past...

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Okay, Wow! ... I'll wallow myself in 
the code later.

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Jim Dutcher, your a crack head, 
assembly is still used today, all these 
other languages like VB and C++ are 
just compiled into an assembly, so plz 
shh and learn

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correction: VB is not compiled into asm 
:-)

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Excellent code mate, well done,  i  
cant wait till im that good, how long 
does it take to become that good? email 
me the answer please and i will 
appreciate it ,
Thanks guys

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The computer only knows how to execute 
machine code, thus, every language is 
converted to machine code and then 
executed.  This includes visual basic.

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