Alanw Posted August 25, 2008 Author Share Posted August 25, 2008 I attempted multi-bounce photon based color bleeding. The image below is 5 bounces with roughly 1.5 million photons. It took about 5 mins to render the final frame, but the overall processing and setup time was pretty high. If anyone's curious about the setup I'd be glad to share. This is the final point cloud viewed through ptviewer. The render, which I'm not really that happy with. I'll post more as I go. Thanks, Alan Quote Link to comment Share on other sites More sharing options...
peterr Posted August 26, 2008 Share Posted August 26, 2008 The walls are lath and plaster. The debri at the base of the stairs is the plaster from the underside of the stairs above. I'd say the walls are painted, I don't see any paper seams. Peterr I have all my UV's mapped now. I'm almost finished collecting texture references as well, so I plan to begin painting my maps soon. The texture on the walls is the only one that's giving me trouble. It's hard to tell if it's weathered paint over plywood or wallpaper. I've also been studying different approaches to the rock debris. In the images above I tried meta-balls converted to polys, but after I changed the geometry to Sub D's it looked more like liquid then anything. Then I instanced 5 RIB archives each containing a single rock to groups of my painted points. Each one randomly oriented and scaled a bit. This looked decent, but took too long to render and used up a lot of RAM. I found a really cool shader today by Peter Stuart that uses bombing to randomly place a bunch of pebbles. This one takes a little bit to render, but it's still faster then my point instancing and I think it looks better. No reason for me to re-invent the wheel. I've changed the lighting model from Lambert diffuse to Oren Nayar, but I plan to experiment with it further. I still think the rocks need to look a bit more "chalky" then they do. -Alan Quote Link to comment Share on other sites More sharing options...
dbukovec Posted August 26, 2008 Share Posted August 26, 2008 Exciting progress Alan! can someone please upload the peeble shader or just point me to right direction, tried to get it to work but got bunch of error messages, and it renders pure white, i got something like this: Unknown command: add@FF Unknown command: noise@FFF Unknown command: smooth@FFFF Unknown command: set@FF ..etc Is this a vex shader or a renderman shader? thanks in advance Quote Link to comment Share on other sites More sharing options...
Alanw Posted August 26, 2008 Author Share Posted August 26, 2008 Exciting progress Alan! can someone please upload the peeble shader or just point me to right direction, tried to get it to work but got bunch of error messages, and it renders pure white, i got something like this: Unknown command: add@FF Unknown command: noise@FFF Unknown command: smooth@FFFF Unknown command: set@FF ..etc Is this a vex shader or a renderman shader? thanks in advance It looks like you can compile the shader into VEX as long as you include all the necessary headers. Have you tried the HIP file that Peter provides on his site? Quote Link to comment Share on other sites More sharing options...
dbukovec Posted August 26, 2008 Share Posted August 26, 2008 exactly, i opened Peter's hip file, and got these errors. (i replaced the distance map fields with a local texture) Quote Link to comment Share on other sites More sharing options...
Alanw Posted August 26, 2008 Author Share Posted August 26, 2008 (edited) The shaders compile fine with VCC. I just tried and it works. Edited August 26, 2008 by Alanw Quote Link to comment Share on other sites More sharing options...
dbukovec Posted August 26, 2008 Share Posted August 26, 2008 hmm, then i will look for it further, but tried for 2 hours to get it work and no success. anyway, thanks for response! Quote Link to comment Share on other sites More sharing options...
Alanw Posted September 30, 2008 Author Share Posted September 30, 2008 Here's an update on my stairwell. There's still a few things that bother me in regards to the textures and modeling, but I think I'm ready to move on. I'm still pretty new to Houdini and prman so it was a learning experience at least. If anyone has any ideas on how to make it better or questions please let me know. Thanks! here's my passes that I composited. and the comp. Quote Link to comment Share on other sites More sharing options...
cellchuk Posted October 20, 2008 Share Posted October 20, 2008 looking pretty good Alan. Quote Link to comment Share on other sites More sharing options...
Alanw Posted October 21, 2008 Author Share Posted October 21, 2008 looking pretty good Alan. Thanks cellchuk Quote Link to comment Share on other sites More sharing options...
scorpius Posted October 25, 2008 Share Posted October 25, 2008 Great work! Where is the original photo from? Quote Link to comment Share on other sites More sharing options...
Alanw Posted October 25, 2008 Author Share Posted October 25, 2008 I found it from googling around for stairwells. The photo belongs to Jeremy Harris. Jeremy Harris Photography Quote Link to comment Share on other sites More sharing options...
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