Rafal123 Posted January 20, 2006 Share Posted January 20, 2006 Hi people! I little played today with i3D clouds but I get strange artifacts on the clouds. First things are 'stairs' on the clouds edge. I emitt these from poly geos, so I thought it becouse of geo. Then I deleted geo but still get this stuff. Also clouds have many dots, they r very grainy. Does it becouse of shader? Check it out: http://www.rafal.stnet.pl/rafal_cloud_test1.jpg r|m Quote Link to comment Share on other sites More sharing options...
doc Posted January 20, 2006 Share Posted January 20, 2006 First things are 'stairs' on the clouds edge. 23948[/snapback] for this problem you might try truning down/off the compression in your 3d texture ROP. This usually clears up this problem. All the best Luca Quote Link to comment Share on other sites More sharing options...
doc Posted January 20, 2006 Share Posted January 20, 2006 Also clouds have many dots, they r very grainy. Does it becouse of shader? 23948[/snapback] I'm guessing that you're using adaptive step in you fog shader, I would turn this off. Is seem to remember adaptive step giving me nothing but problems. Luca Quote Link to comment Share on other sites More sharing options...
DaJuice Posted January 20, 2006 Share Posted January 20, 2006 I'm guessing that you're using adaptive step in you fog shader, I would turn this off.Is seem to remember adaptive step giving me nothing but problems. Luca 23968[/snapback] Yeah, it will be slower to render in some scenarios but you will get uniform quality at least. Quote Link to comment Share on other sites More sharing options...
aracid Posted January 21, 2006 Share Posted January 21, 2006 if u can post the hip, it may be easier to diagnose brian Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted January 21, 2006 Author Share Posted January 21, 2006 Thanks Doc! U right adaptiveSteps make this stairs and dots. Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted February 5, 2006 Author Share Posted February 5, 2006 so... I played with clouds little more and get better result, but I get new artifacts -- horizontal lines on cloud, check this link: http://www.rafal.stnet.pl/houdini_cloud.jpg does anybody know why? Quote Link to comment Share on other sites More sharing options...
aracid Posted February 6, 2006 Share Posted February 6, 2006 so... I played with clouds little more and get better result, but I get new artifacts -- horizontal lines on cloud,check this link: http://www.rafal.stnet.pl/houdini_cloud.jpg does anybody know why? 24440[/snapback] my first guess is the resolution of ur i3d, i think its too low Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted February 6, 2006 Author Share Posted February 6, 2006 thanks for info man! I must check it Quote Link to comment Share on other sites More sharing options...
doc Posted February 6, 2006 Share Posted February 6, 2006 so... I played with clouds little more and get better result, but I get new artifacts -- horizontal lines on cloud, 24440[/snapback] I have to go with aracid on this one try increasing the resolution. Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted February 6, 2006 Author Share Posted February 6, 2006 thanks dudes, yeahh it's a resolution issue p.s here's one with higher res and artifacts gone: http://www.rafal.stnet.pl/houdini_cloud_new.jpg p.p.s I bet there are more stuff to do for realistic clouds creation, right? Do U guys know some tips what one should add for clouds? SSS, some special kind of lighting or rendering? Quote Link to comment Share on other sites More sharing options...
symek Posted February 7, 2006 Share Posted February 7, 2006 how long does it take this render/i3d generation on your machine? Making a nice clouds is not a problem, making them fast... this is a chalange! Quote Link to comment Share on other sites More sharing options...
Mario Marengo Posted February 7, 2006 Share Posted February 7, 2006 Making a nice clouds is not a problem, making them fast... this is a chalange! 24513[/snapback] Hmm.... making nice (as in photoreal) volumetric clouds is not exactly a walk in the park... even if you restrict yourself to forward scattering only. At least in my experience. Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted February 7, 2006 Author Share Posted February 7, 2006 how long does it take this render/i3d generation on your machine? Making a nice clouds is not a problem, making them fast... this is a chalange! 24513[/snapback] I'm not sure.... few minutes I think... are there any option to show render times in Mplay?? and my machine is old and slooow --> Celeron 1.7ghz + old Nvidia Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted February 15, 2006 Author Share Posted February 15, 2006 If I would like to have an animated clouds the one and only way is to animate and render to .i3d right? If I have one 'static' .i3d file and put it on animated metaballs I won't get animated clouds, right? Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted February 24, 2006 Author Share Posted February 24, 2006 new clouds test, check it out dudes: http://www.rafal.stnet.pl/houdini_cloud_new_2.jpg clouds don't have many details but I'm still working on it, what do U think? Quote Link to comment Share on other sites More sharing options...
Visual Cortex Lab Posted February 24, 2006 Share Posted February 24, 2006 nice ... i was also testing some clouds last week... well.. i should say smokes... cause i was trying to get a face.. smoked and dusted ... lemme exaplain with my engrish a face.. which falls down like it becomes powder .. dust.. or like the mummy to make an example.. and i wanted also to fill all this with a sort of smoke.. and i tried I3d.. I'd like to see some cool examples on this topic actually.. maybe Jason can show up something to "trick" or improve quality and render times? Quote Link to comment Share on other sites More sharing options...
brandonY Posted February 27, 2006 Share Posted February 27, 2006 nice ... i was also testing some clouds last week... well.. i should say smokes... cause i was trying to get a face.. smoked and dusted ... lemme exaplain with my engrish a face.. which falls down like it becomes powder .. dust.. or like the mummy to make an example.. and i wanted also to fill all this with a sort of smoke.. and i tried I3d.. I'd like to see some cool examples on this topic actually.. maybe Jason can show up something to "trick" or improve quality and render times? 25054[/snapback] cool clouds, is there any way to get nice dense clouds with hard shadows? like volcanic smoke? it seems you can't with the deflaut shaders. Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted February 27, 2006 Author Share Posted February 27, 2006 is there any way to get nice dense clouds with hard shadows? like volcanic smoke? I think yes, tweaking, tweaking U must Brandon Quote Link to comment Share on other sites More sharing options...
Rafal123 Posted March 3, 2006 Author Share Posted March 3, 2006 new test here: http://www.rafal.stnet.pl/houdini_cloud_new_3.jpg p.s geez... those r really look shitty... I must tweak them Quote Link to comment Share on other sites More sharing options...
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