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Projective texture shader : #147260
08/11/07 09:47
08/11/07 09:47
Joined: Oct 2004
Posts: 1,856
TheExpert Offline OP
Senior Developer
TheExpert  Offline OP
Senior Developer

Joined: Oct 2004
Posts: 1,856
Well , i don't know if it has been delivered or not :
i juts have my A6 commercial not A7 !

Well this sort of shader to apply to any plane model and it's
(animated) texture :
very usefull to simulate shadows at no cost or simulate clouds on a scene ,
or light beams on a scene or underwater.

Well don't know if it will be in the A7 package ??

Re: Projective texture shader : [Re: TheExpert] #147261
08/11/07 18:16
08/11/07 18:16
Joined: Mar 2006
Posts: 2,503
SC, United States
xXxGuitar511 Offline
Expert
xXxGuitar511  Offline
Expert

Joined: Mar 2006
Posts: 2,503
SC, United States
It's possible in A6... I've already written 2


xXxGuitar511
- Programmer
Re: Projective texture shader : [Re: xXxGuitar511] #147262
08/11/07 22:35
08/11/07 22:35
Joined: Oct 2004
Posts: 1,856
TheExpert Offline OP
Senior Developer
TheExpert  Offline OP
Senior Developer

Joined: Oct 2004
Posts: 1,856
I don't mean coding or twicking

i mean like some other tools : no code to import or other :
you run 3DGS the shader is ready to use.

I meaned packaged on 3DGS.

People should understand what is a tool ready to use like Maya SDK for Nebula ,
or old KJAPI that had a 3DSMAX exporter that could export normal,specular,
emissive glow maps ....

Ready to Use , packaged , i think in terms of 3D artists.

Well just a suggestion
Perhaps another forecast page special for shaders should be done
i laught , caus 3DGS have lot of things to do , and i don't see them full on shaders ... it's a hard part ...

Re: Projective texture shader : [Re: TheExpert] #147263
08/12/07 00:54
08/12/07 00:54
Joined: Mar 2006
Posts: 2,503
SC, United States
xXxGuitar511 Offline
Expert
xXxGuitar511  Offline
Expert

Joined: Mar 2006
Posts: 2,503
SC, United States
shaders are easy to implement.... you don't need but very little c-script knowledge.

However, it would be cool if us programmers could add interfaces to our shaders...


xXxGuitar511
- Programmer
Re: Projective texture shader : [Re: xXxGuitar511] #147264
08/12/07 11:06
08/12/07 11:06
Joined: Nov 2004
Posts: 7,121
Potsdam, Brandenburg, Germany
Machinery_Frank Offline
Senior Expert
Machinery_Frank  Offline
Senior Expert

Joined: Nov 2004
Posts: 7,121
Potsdam, Brandenburg, Germany
Projected textures would be a great add-on indeed. We could fake light coming through grates, protected lamps, windows maybe even animated shadows coming from ventilators or swinging trees.

This could add alot to every level.

It could be a flat projection or bended similar to the decal-projection and it could be a cubic projection. The last method could also be used to create static shadows via shader. I saw this often in modern games.


Models, Textures and Games from Dexsoft
Re: Projective texture shader : [Re: Machinery_Frank] #147265
08/13/07 06:36
08/13/07 06:36
Joined: Mar 2006
Posts: 2,503
SC, United States
xXxGuitar511 Offline
Expert
xXxGuitar511  Offline
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Joined: Mar 2006
Posts: 2,503
SC, United States
....hmmm

We might be talking about different "projective texturing".


Frank's talking about shadowmapping (sort of). (I know what you mean). This is already posssible, and I've been thinking of looking into it...

I was talking about mapping a background image over models onto the screen (like for my 2.5D game)...

Though, I guess they might use the same technique, but I'm not sure...

If I find time I'll look into it.


xXxGuitar511
- Programmer
Re: Projective texture shader : [Re: xXxGuitar511] #147266
08/13/07 20:44
08/13/07 20:44
Joined: Aug 2000
Posts: 7,490
O
Orange Brat Offline

Senior Expert
Orange Brat  Offline

Senior Expert
O

Joined: Aug 2000
Posts: 7,490
What Frank is describing is what projective texturing is. The 3rd Thief game and Splinter Cell games used it as do many more modern and semi-modern games. It simulates complex shadow situations by projecting a sprite (or whatever) onto a surface (like a light shining through a complex fence or stain glass windows). It looks like the dynamic lights are causing all of these cool looking shadows but in reality it's just a texture being projected....in other words a faked shadow.

Matt created a projective texture shader years ago, but it's old and slow, and he's supposedly working on a new one and probably for Sphere 3.

Maybe, it is all the same thing, though.


My User Contributions master list - my initial post links are down but scroll down page to find list to active links
Re: Projective texture shader : [Re: Orange Brat] #147267
08/14/07 05:14
08/14/07 05:14
Joined: Mar 2006
Posts: 2,503
SC, United States
xXxGuitar511 Offline
Expert
xXxGuitar511  Offline
Expert

Joined: Mar 2006
Posts: 2,503
SC, United States
Well, I guess I'll give it a try, but again, time is a pressing issue. I'm working 16 hours a day (both real job and paid programming online)...

...I'll try, but no promises.


xXxGuitar511
- Programmer
Re: Projective texture shader : [Re: xXxGuitar511] #147268
08/14/07 09:41
08/14/07 09:41
Joined: Nov 2004
Posts: 7,121
Potsdam, Brandenburg, Germany
Machinery_Frank Offline
Senior Expert
Machinery_Frank  Offline
Senior Expert

Joined: Nov 2004
Posts: 7,121
Potsdam, Brandenburg, Germany
I appreciate your braveness and strong will, xXxGuitar. Even despite your limited time you always try to help. You are a good one!


Models, Textures and Games from Dexsoft
Re: Projective texture shader : [Re: Machinery_Frank] #147269
08/14/07 18:18
08/14/07 18:18
Joined: Jun 2003
Posts: 1,017
Germany
T
Thomas_Nitschke Offline
Senior Developer
Thomas_Nitschke  Offline
Senior Developer
T

Joined: Jun 2003
Posts: 1,017
Germany
What about the projection shader on the wiki? I've never tried it, so I have no idea whether it works at all...


Formerly known as The Matrix - ICQ 170408644 I've been here for much longer than most people think. So where's my "Expert" status?
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