bump mapping

radiance-general
1

I know this has been discussed before -
I've been searching the archives and found one could use texdata to make an
image-based bump map.
http://radsite.lbl.gov/radiance/pub/digest/no_Z/v2n4

Simon Crone - are you out there? Can you shed some light for me?

In the end, I'm looking for a way to produce the textures of interior walls
. In the past, I've generated noise in Photoshop, blurred it and used Find
Edges filter.
If there's a way to do this some other way, I'd be open. The Puckered
material in the Cabin scene is'nt quite what I'm looking for.

thanks
Rob Fitzsimmons

2

Fitzsimmons, Rob wrote:

In the end, I'm looking for a way to produce the textures of interior walls

Hi Rob,

if you're one of the adventurous kind you may have a look into my 2002 workshop contribution. I've prepared some complex .cal -files for mathematical color and/or surface-normal -pattern generation. I admit that this all is a bit awkward, as there are a lot of cryptic parameters. On the other hand, this complexity allows the realistic modelling of a lot of common building materials (including, a.o., rough wall textures)

-Carsten

3

Rob
Many moons ago I did write some code to enable the use of images as bump
maps.
After a bit of diging though my archives I found the following.

Attached is the modified source from R2.1 and some documentation.
I think the WARNING in the texpict.html says it all :wink:

HTH
Simon
[email protected]

texpict.zip (7.65 KB)

···

----- Original Message -----
From: "Fitzsimmons, Rob" <[email protected]>
To: <[email protected]>
Cc: <[email protected]>
Sent: Saturday, September 06, 2003 7:18 AM
Subject: [Radiance-general] bump mapping

I know this has been discussed before -
I've been searching the archives and found one could use texdata to make

an

image-based bump map.
http://radsite.lbl.gov/radiance/pub/digest/no_Z/v2n4

Simon Crone - are you out there? Can you shed some light for me?

In the end, I'm looking for a way to produce the textures of interior

walls

. In the past, I've generated noise in Photoshop, blurred it and used Find
Edges filter.
If there's a way to do this some other way, I'd be open. The Puckered
material in the Cabin scene is'nt quite what I'm looking for.

thanks
Rob Fitzsimmons
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4

Thanks to Simon and Carsten

I'll give them a shot

Rob

···

-----Original Message-----
From: Simon Crone
To: [email protected]
Sent: 9/8/2003 3:57 AM
Subject: Re: [Radiance-general] bump mapping

Rob
Many moons ago I did write some code to enable the use of images as
bump
maps.
After a bit of diging though my archives I found the following.

Attached is the modified source from R2.1 and some documentation.
I think the WARNING in the texpict.html says it all :wink:

HTH
Simon
[email protected]