michaliszissiou
Art Master
1233681000
Posted 1284944062
Reply with quote #1
How to use different diffuse and bump maps in podium V2.
V2 generates bumps automatically from the diffuse map. But what if we have a graffiti on a heavy bumped wall texture? We'll render the graffiti with bump.
So here's how to avoid this:
Try to render the skp file using bump (bumpTest.skp). Next render the same without bump at all. Now go to SU textures palette and replace the wall texture with the grey one below.
Render again using heavy bump this time. Combine the two renders in Ps using the grey one as a multiplier, see photo below.
Here the result. Graffiti has no bump.
Attached Images Picture_1.png (35.17 KB, 1589 views)walltex_4_bump.jpg (349.43 KB, 1597 views)BumpTest.jpg (240.19 KB, 1587 views)
Attached Files bumpTest.skp (491.65 KB, 158 views)
Tyro
Storyteller
1175870339
Posted 1284960937
Reply with quote #2
...very interesting solution, Michalis, but who'd ever spray this on such a nice wall
bigstick
1165246934
Posted 1284963721
Reply with quote #3
This is on our 'to do' list
I have to say that I take issue with the original premise. If you have a textured wall and someone sprays onto it, the spray will go into all the cracks, and you will see the original texture underneath the paint. The bump under the graffiti is accurate.
There are better instances where you might want to use separate bump maps.
That which does not kill us makes us stronger-Friedrich Nietzsche
michaliszissiou
Art Master
1233681000
Posted 1284977101
Reply with quote #4
Thanks tyro, BTW the texture is seamless, from some ruins in athens and feel free to use it if you like it.
Quote:
There are better instances where you might want to use separate bump maps.
Of course but see what has happened to these graffitis here. On the v1 render of this subject I had to use separate maps. Inverting the B&W bumpmap inverts the effect anyway.
To use multiple render passes is a nice solution, render times are not bad as in most cases a second and a third pass is without reflections or many lights etc.
What I like is that I can use two suns!
Multiple pass render is a solution for everyone likes to experiment with AO. Just use a LEM without cast shadows in clay mode and combine this (multiply or overlay or even screen) with the raw basic render. I'll post something soon. This could improve renders on corners, ceiling etc
doll
1286178875
Posted 1286252457
Reply with quote #5
You might also consider Z-Born Toy... it seems like it would be pretty handy for the effect you're describing. Thanks,
Industrial Kitchen Equipment | Restaurant Equipment
urbanjourney
1415284918
Posted 1415324942
Reply with quote #6
How about creating a ripple effect in water using Podium - this is shown as a fairly easy process in Vray (see tutorial ink) but possible using Podium?[Tutorial] Create Realistic Water with Ripples Effect
bigstick
1165246934
Posted 1415345425
Reply with quote #7
This will work almost exactly the same in Podium, but it's much easier. I did something like this a couple of days ago.
That which does not kill us makes us stronger-Friedrich Nietzsche
urbanjourney
1415284918
Posted 1415353184
Reply with quote #8
Thanks so much Bigstick - this will be an enormous help. I'm an avid user of Podium for Landscape Design and although it's really just a nice presentation tool for me, I get addicted to trying to create as much realism as possible hence spend so much time on it.
Nick00
Maître érudit
1233619430
Posted 1415631778
· Edited
Reply with quote #9
There's also a water material in the browser. It uses a simple caustics textures which makes the waves.
