Help with Set Object Mask - GameCreators Forum

Author

Message

Mobiius

Valued Member

23

Years of Service

User Offline

Joined: 27th Feb 2003

Location: The Cold North

Posted: 23rd Dec 2010 01:26 Edited at: 23rd Dec 2010 01:56

Link

Hello, I have a question about the Set Object Mask command.

I know how it works and all that, (For Example: 'Set Object Mask Obj, 2 ^ 0' will make the object visible to only camera 0) But Is there a way to set an object to be visible to multiple cameras?

I vaguely remember something like Set Object Mask Obj, 2^0||2^2 (or something, but it doesn't work as expected.)

Basically, I'm trying to combine a number of shaders into my game engine (Evolved's Fresnel water, 60 squares' heat haze, bond1's adaptive bloom) which works if I don't set the mask at all, it just looks weird when using the bloom. (I get multiple ghosts in the heat haze, but no bloom.) I can't figure out how to mask multiple cameras.

Can anyone assist? Much thanks anyway.

My signature is NOT a moderator plaything! Stop changing it!

Back to top

Profile PM Email Website

The Slayer

Forum Vice President

16

Years of Service

User Offline

Joined: 9th Nov 2009

Playing: (Hide and) Seek and Destroy on my guitar!

Posted: 23rd Dec 2010 02:05 Edited at: 23rd Dec 2010 02:05

Link

Quote: "But Is there a way to set an object to be visible to multiple cameras?"

I could be wrong, but setting the Camera Mask Bits to the corresponding camera numbers should solve it?

From the help files:

+ Code Snippet

SET OBJECT MASK 
This command will set a bitmask for an object, which will instruct the object whether to render to a specific camera or not. 

SYNTAX 

SET OBJECT MASK Object Number, Camera Mask Bits

PARAMETERS  

Object Number

Integer 
The object number 

Camera Mask Bits

Integer 
The bitmask which specifies which cameras should render the object ( %1111 will render the object to cameras zero through three whereas %1010 will only render to cameras one and three ) 

RETURNS

This command does not return a value. 

DESCRIPTION

Setting the bit to one for the camera indicated by the bit position to one means the object should be rendered, zero means the object should not be rendered.

Cheers

SLAYER RULES! YEAH, MAN!!

Back to top

Profile PM Email

Mobiius

Valued Member

23

Years of Service

User Offline

Joined: 27th Feb 2003

Location: The Cold North

Posted: 23rd Dec 2010 02:07

Link

That only works if you know the camera number, and can convert it to Binary.

The system I use (I.E. the 2^CamNo) means I can use a Find Free Camera function to get the camera ID, but I need to be able to do it for two cameras, which could have any ID.

I was sure I could do some kind of bitwise jiggery pokery, but using the method I'm using, rather than have to convert the decimals into binary, then bitwise that.
(If that makes sense)

My signature is NOT a moderator plaything! Stop changing it!

Back to top

Profile PM Email Website

IanM

Retired Moderator

23

Years of Service

User Offline

Joined: 11th Sep 2002

Location: In my moon base

Posted: 23rd Dec 2010 12:32

Link

You already had it:

+ Code Snippet

Set Object Mask Obj, 2^0||2^2

That should enable the object for camera 0 and 2.

You can see this by displaying the result in binary:

+ Code Snippet

mask = 2^0 || 2^2
print bin$(mask)
wait key

Get the latest Matrix1Utility plug-ins (23-DEC-2010)

Back to top

Profile PM Email Website

Mobiius

Valued Member

23

Years of Service

User Offline

Joined: 27th Feb 2003

Location: The Cold North

Posted: 23rd Dec 2010 12:37

Link

Really? Thanks for that, but it doesn't seem to provide the desired results?

I'll have another fiddle with it and see what's what and possibly post images if I need to.

Thanks for your help.

My signature is NOT a moderator plaything! Stop changing it!

Back to top

Profile PM Email Website

IanM

Retired Moderator

23

Years of Service

User Offline

Joined: 11th Sep 2002

Location: In my moon base

Posted: 23rd Dec 2010 12:40

Link

PEBCAK

[b][/b]

Get the latest Matrix1Utility plug-ins (23-DEC-2010)

Back to top

Profile PM Email Website

Mobiius

Valued Member

23

Years of Service

User Offline

Joined: 27th Feb 2003

Location: The Cold North

Posted: 23rd Dec 2010 12:52

Link

Not funny. lol

My signature is NOT a moderator plaything! Stop changing it!

Back to top

Profile PM Email Website

Mobiius

Valued Member

23

Years of Service

User Offline

Joined: 27th Feb 2003

Location: The Cold North

Posted: 23rd Dec 2010 15:37

Link

I've solved this issue.

I just removed the mask completely. Not what I had in mind, but it'll have to do.

Turns out that what I had originally did work, just not how I expected. After a bit of careful thinking, I fiddled with some things and got it working. Then fiddled with some non related stuff and broke it again.

So removed the mask and now it's functioning again.

My signature is NOT a moderator plaything! Stop changing it!

Back to top

Profile PM Email Website

Sorry your browser is not supported!

DarkBASIC Professional Discussion / Help with Set Object Mask