Hi list,
Are any plans to implement shadows and reflections in GEM? This has been asked a while ago, I'm just wondering if things have changed since then. If not, out of interest, what's the main problem with implementing them, aside from being very CPU-heavy? I think they would both be really cool features.
Thanks Stefan Turner
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Stefan Turner wrote:
Hi list,
Are any plans to implement shadows and reflections in GEM? This has been asked a while ago, I'm just wondering if things have changed since then. If not, out of interest, what's the main problem with implementing them, aside from being very CPU-heavy? I think they would both be really cool features.
openGL does not support shadows at all (but there are some tricks that generate things that look like shadows) they have a low priority on my todo-list
a simple reflection model should be possible, once the "multiple_window" thing gets finished.
mfg.asdr. IOhannes
Hey Stefan,
Zack Settle really wanted a spotlight with shadows, and got Pierre-Oliver Charlebois to write spot_light.
Anyhow I have a test build for OSX for this, and attached is the source.
It works ok, though the shadow edges can be little ugly. And for some reason the "lighting" switch does not work, when this object is compiled in lighting seems always to be switched on. I'm not sure if the author is on here, but the src files contain no log of changes for spot-light and the source looks just looks hacked from "world light" There is a little readme with no email contact.
Anyhow here is it, I've done nothing with it but compile, maybe it can be added to gem proper...
Anyhow Pierre-Oliver if your reading this please subscribe to gem-dev@iem.at and introduce yourself.
As for reflections this seems pretty improbable in real-time.. I've been using something that looks something like reflection with pix_snap2tex feedback. I think most reflections done in real-time are faked.
B>
Stefan Turner wrote:
Hi list,
Are any plans to implement shadows and reflections in GEM? This has been asked a while ago, I'm just wondering if things have changed since then. If not, out of interest, what's the main problem with implementing them, aside from being very CPU-heavy? I think they would both be really cool features.
Thanks Stefan Turner
How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com
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Hi,
First, I've kept your whole message as a reply, because (on my computer at least) while I received your direct mail ok, the PD list archives and the digest message I got just show it as:
Skipped content of type multipart/mixed-------------- next part
A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 256 bytes Desc: OpenPGP digital signature Url : http://lists.puredata.info/pipermail/pd-list/attachments/20050509/53692d8f/s...
Here's the actual message:
--- "B. Bogart" ben@ekran.org wrote:
Hey Stefan,
Zack Settle really wanted a spotlight with shadows, and got Pierre-Oliver Charlebois to write spot_light.
Anyhow I have a test build for OSX for this, and attached is the source.
It works ok, though the shadow edges can be little ugly. And for some reason the "lighting" switch does not work, when this object is compiled in lighting seems always to be switched on. I'm not sure if the author is on here, but the src files contain no log of changes for spot-light and the source looks just looks hacked from "world light" There is a little readme with no email contact.
Anyhow here is it, I've done nothing with it but compile, maybe it can be added to gem proper...
Thanks for sending this, I will definitely have a go with it when I have some time. I agree it should be added to Gem if possible.
Anyhow Pierre-Oliver if your reading this please subscribe to gem-dev@iem.at and introduce yourself.
As for reflections this seems pretty improbable in real-time.. I've been using something that looks something like reflection with pix_snap2tex feedback. I think most reflections done in real-time are faked.
Yes I think what IOhannes meant was you could use "multiple_window" to generate reflections for flat surfaces. Similar to pix_snap2tex but you could use the correct viewpoint.
Thanks Stefan Turner
B>
How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com
Stefan Turner wrote:
As for reflections this seems pretty improbable in real-time.. I've been using something that looks something like reflection with pix_snap2tex feedback. I think most reflections done in real-time are faked.
Yes I think what IOhannes meant was you could use "multiple_window" to generate reflections for flat surfaces. Similar to pix_snap2tex but you could use the correct viewpoint.
exactly!
the only project i know that can do "real" realtime reflections (and shadows and everything) is openRT (a realtime raytracer) certainly there are others. Gem is non of them ;-(
mfg.ads.r IOhannes
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B. Bogart -
IOhannes m zmoelnig -
Stefan Turner