donvlatko Posted March 6, 2010 Share Posted March 6, 2010 I have very strange problem. I made sphere and apply fur, than I make a spot light and hit render button. I get a black spot on fur. When I delete spot light I lose black spot on fur. So this is problem with spot light. Does anyone know why is this happening? thanks Quote Link to comment Share on other sites More sharing options...
roughsporty Posted March 7, 2010 Share Posted March 7, 2010 I have very strange problem. I made sphere and apply fur, than I make a spot light and hit render button. I get a black spot on fur. When I delete spot light I lose black spot on fur. So this is problem with spot light. Does anyone know why is this happening? thanks please show us your image Quote Link to comment Share on other sites More sharing options...
donvlatko Posted March 7, 2010 Author Share Posted March 7, 2010 do you see black spot in right upper part of sphere? Quote Link to comment Share on other sites More sharing options...
dbukovec Posted March 7, 2010 Share Posted March 7, 2010 Zdravo! Turn on depth map shadows on the spotlight, and set pixel samples to 3x3 on it. Quote Link to comment Share on other sites More sharing options...
donvlatko Posted March 7, 2010 Author Share Posted March 7, 2010 Zdravo Ok I will try. Do you have any tips on how to setup mantra preference for best look of fur? Quote Link to comment Share on other sites More sharing options...
dbukovec Posted March 7, 2010 Share Posted March 7, 2010 Use micropoly rendering, and set pixel samples to 8*8 at least, but the crucial thing is the deep shadow map which i described above, You may also lower or rise the shadow bias too, depending on your scene. Also You can add softness to your shadows, this also depends on your scene size, and I tend to set the shadow quality to 3-4 Quote Link to comment Share on other sites More sharing options...
donvlatko Posted March 7, 2010 Author Share Posted March 7, 2010 Thank you.What if I want to make fur more sharp bur still good quality?? Quote Link to comment Share on other sites More sharing options...
Jason Posted March 7, 2010 Share Posted March 7, 2010 On the Mantra ROP, look at "Pixel Filter" (under Properties/Output) -- the default is "gaussian 2 2" which is slightly soft, but looks the best with motion blur and such. Sometimes for a nice crisp still image, you can change the filter to a sharpening filter -- just try them all and pick your desired look. Gaussian looks quite good at lower values for Pixel Samples, so you might find yourself having to boost that (to like 15x15) for sharpening filters. Quote Link to comment Share on other sites More sharing options...
donvlatko Posted March 7, 2010 Author Share Posted March 7, 2010 see how my hair look in alpha, how can I fix that issue? this is also issue when I put pixel filter gussian to 3x3 My pixel samples are 15x15, I have depth shadow 1k pixel sample 12x12 Quote Link to comment Share on other sites More sharing options...
Jason Posted March 7, 2010 Share Posted March 7, 2010 see how my hair look in alpha, how can I fix that issue? this is also issue when I put pixel filter gussian to 3x3 My pixel samples are 15x15, I have depth shadow 1k pixel sample 12x12 You can increase Pixel Samples even higher, if you need to smooth away that even more. Don't be shy:) I've done 40x40 for stills before. You depth shadow probably doesn't need to be much more than 2x2 samples or 3x3 samples to get nice shadows. (No matter what your shadows are doing, it won't affect the Alpha of the image, of course) Quote Link to comment Share on other sites More sharing options...
donvlatko Posted March 8, 2010 Author Share Posted March 8, 2010 what if I want for animation and not still? Quote Link to comment Share on other sites More sharing options...
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