Indigo Renderer Forum

Posted: **Sat Jun 28, 2008 8:45 am**

Somethign like this

Basically, a material that is somewhat transparent and glows..

Posted: **Sat Jun 28, 2008 8:53 am**

Hmm that would be interesting. I'm guessing an emitter, blended with a transparent with an IOR of 1. or something as such.

Posted: **Sat Jun 28, 2008 8:55 am**

emitters can be blended?

Posted: **Sat Jun 28, 2008 8:55 am**

ZYX wrote:emmiters can be blended?

i dont know, maybe? im noob, i was just speculating.

Posted: **Sat Jun 28, 2008 10:39 am**

emitters cannot be blended, they're not materials.

You should be able to get transparent anything by blending with the null material.
As for glowing, I think you'd have to use some clever lighting, and add bloom/glare in post.

Posted: **Sat Jun 28, 2008 10:51 am**

If it has to be glowing, I think the best thing to do is, to do it in postpro.
You could do a render with a textured emitter, and one without. And blend them.

Or just do a render without the hologram, and photoshop it in afterwards.

Posted: **Sat Jun 28, 2008 11:24 am**

Now what about a wireframe shader

sorry I'm a bit sarcastic right now... ok voxels with nice interpolation would work better here my two cents, better holographic look because borders not too sharp unlike surface wich is sharp sharp sharp

Posted: **Wed Jan 14, 2009 12:40 pm**

How about something a little simpler.. A color display embedded in glass?
http://www.youtube.com/watch?v=jPauljzA ... re=related

Another example of a hologram is attached. If a new material type is needed (say "transparent glow" or something) then I think it would make a valuable addition.

Posted: **Wed Jan 14, 2009 7:42 pm**

An holographic material looks like this:

Code: Select all

<medium>
	<name>blinn1_medium</name>
	<precedence>6</precedence>
	<basic>
		<ior>1</ior>
		<cauchy_b_coeff>0</cauchy_b_coeff>
		<absorption_coefficient_spectrum>
				<rgb>
					<rgb>0 0 0</rgb>
					<gamma>2.200000048</gamma>
				</rgb>
		</absorption_coefficient_spectrum>
	</basic>
</medium>

<material>
	<name>blinn1SG</name>
	<specular>
		<transparent>true</transparent>
		<internal_medium_name>blinn1_medium</internal_medium_name>
		
		<texture>
			<uv_set>default</uv_set>
			<path>C:\work\3d\Indigo\dev\shaderV2\hologram.png</path>
			<exponent>2.2</exponent>
			<b>1</b>
		</texture>
		
		<base_emission>
			<constant>
				<rgb>
					<rgb>5000000 5000000 5000000</rgb>
					<gamma>1</gamma>
				</rgb>
			</constant> 
		</base_emission>
		
		<emission> 
			<texture>
				<texture_index>0</texture_index>
			</texture>
      </emission> 
      
	</specular>
</material>

the screen is totally invisible (it does not interact with light), even not casting shadows. Only the light it is emiting is visible. As such it's also the perfect candidate for laser beams.

edit: I'm insisting on the fact that, as a specular, this material will only work on closed meshes (volumes). Here I'm using a shrinked cube, it's no plane.

Posted: **Thu Jan 15, 2009 8:15 am**

Looks great ctzn! Im gonna see if I can use this with skindigo.

Posted: **Mon Jan 19, 2009 1:01 am**

After you asked for the same thing again otherwhere I suppose you could not, did you ? This is the topic where you should have continued on...

I have myself written this shader by hand, the Maya to Indigo exporter is being reworked to export such materials out of the box (ie without string replacement, really by exporting material parameters).

I don't think you have asked in the SKIndigo forum on that matter, sorry neo0. but what is your head at ? If you can't use raw xml please stick with your exporter forum.

If I was admin, this would be a warning, sanctioned by the destruction of this thread without further comments.

Lucky you, that's just me.

Posted: **Mon Jan 19, 2009 9:17 am**

Would it be possible to create a colored holo material..? See attachedd

Posted: **Mon Jan 19, 2009 9:24 am**

Nothing more to say... that is just unbeliveable...

Posted: **Mon Jan 19, 2009 9:32 am**

I will follow up soon on this, wanting to do a better image than above (edit: referring to mine, of course

).

The material will be the very same, so the answer is "yes it would", if I am correct.

Posted: **Mon Jan 19, 2009 9:59 am**

Instead of using an texture, could could theoretically just use geometry apply the mat to it, right? I mean, I think thats what they did in those CG movies that I took the pics from.