notamondayfan Posted October 15, 2005 Share Posted October 15, 2005 hi guys, my 1st attempt at using MR for interior use. this i what ive got so far... im having trouble with area lighting, my direct lights wont cast shadows inside the room. any ideas? any other tips and comments v welcome, deano! Link to comment Share on other sites More sharing options...
mrcharles Posted October 15, 2005 Share Posted October 15, 2005 Any of the lights that you may have modeled in your 3D app. won't have any effect in MR. MR is a physically based rendering system and so any lights that you would like in the interior (or exterior) of your modeled environment need to be created as polygons and assigned the emitter material in the maxwell shader. Note, you can get very accurate lighting from this approach... search the next limit forums for information on how to model your emitters and light reflectors to suit your particular needs. The link below gives information on creating IES accurate lights. http://www.maxwellrender.com/forum/viewtopic.php?t=6628 I would also suggest looking in the MR reference, tutorial, and documentation links page (see Techniques/Experiments section...)... link listed below... http://www.maxwellrender.com/forum/viewtopic.php?t=3536 Good luck and keep digging. You will be rewarded for your efforts. cw Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 15, 2005 Share Posted October 15, 2005 MR= Mental Ray, I guess... Link to comment Share on other sites More sharing options...
DennisHolland Posted October 15, 2005 Share Posted October 15, 2005 Yes Ricardo. If that is Maxwell, then i'm the late Jim Jones Don't know much about MentalRay but a skylight and GI turned on won't hurt in this one. If you use MR Area omni's, check your rollout and see if shadows are turned on, they are off by default. Maybe experiment a little with your camera? Try to have it 50 cm above the floor, looking straight forward so the off-look is gone... The angle of the sun is nice, but the room needs some improvement Deano Keep it up, Dennis Link to comment Share on other sites More sharing options...
notamondayfan Posted October 15, 2005 Author Share Posted October 15, 2005 cheers guys, im new 2 all this way of working, and its a steep learning curve at the moment so any tips and peices of info wud b great. i think im getting the nack of where 2 arange my lighting, charles, im using mental ray, not maxwel, so im a little confused by ur post. in the scene are mainly direct lights, are the shadow params affect by MR? deano! Link to comment Share on other sites More sharing options...
derijones Posted October 15, 2005 Share Posted October 15, 2005 There's a good tutorial on the Treddi website for internal lighting using Mental Ray (based on Maya, but should relate to 3D studio OK I'd imagine). I've posted the link on the Maya thread (I've deleted the bookmark, sorry!). It's good and clear and gives you a good shove in the right direction. Cheers Deri Link to comment Share on other sites More sharing options...
mrcharles Posted October 16, 2005 Share Posted October 16, 2005 Sorry for the confusion... I presumed "MR" referred to "Maxwell Render". I guess you know what I'm using now... Link to comment Share on other sites More sharing options...
notamondayfan Posted October 16, 2005 Author Share Posted October 16, 2005 cheers deri, i found that link n will check it out asap. thanks! Link to comment Share on other sites More sharing options...
notamondayfan Posted October 17, 2005 Author Share Posted October 17, 2005 ok update, i have given up on MR 4 a while, and decided to give vray a chance (1st time using this too!) let me know what u think..... Link to comment Share on other sites More sharing options...
DennisHolland Posted October 17, 2005 Share Posted October 17, 2005 give this tutorial a try: http://67.15.36.49/team/Tutorials/linda_vray/vray_01.asp Good luck, Dennis Link to comment Share on other sites More sharing options...
notamondayfan Posted October 17, 2005 Author Share Posted October 17, 2005 erm how cum i dont have vray lights? is it because im using the free version? Link to comment Share on other sites More sharing options...
Tim Saunders Posted October 17, 2005 Share Posted October 17, 2005 yes. with vray free you only get the vray shadows, and a vraymat material that is good for reflecting surfaces. no lights though. try puting your ceiling lights within the cans so they don't cast so much light on the ceiling. on your exterior light, make sure you have vray shadows selected and under the vray shadow params, pick area shadows, smooth surface, and try box type with a uvw size of like 20. that will soften up the shadows coming in from the window. Link to comment Share on other sites More sharing options...
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