hello everyone, i have a problem when i render a head model in appleseed.
when i convert the model from obj to binarymesh, the program crashed and i have to use the obj model.
but after load the obj model, i can not assign material to it. i have tried many method.
1.create disney material and assign to the front side, it appears red as if no material assigned to it
2.create disney material and assign to the back side, no influence
3.create disney material and assign to both sides, the head mesh disappears!!!
4.create generatic material and other mateiriasl, do not work
5.add different lights, do not work
no matter what i do, the result is all the same: the material can not apply to the head mesh. and you can see that other objects seems works(like cube and sphere)
what is the problem for this mesh(this mesh is the head model by blender in appleseed website)
19-7-22: maybe I solved the problem. i build a new scene to debug this, and maybe this is the problem of “EDF”. First, I build a new scene like the following:
The material is physical surface shader and Lambertian BRDF. the important part is the light material, which bind a EDF
when i set the edf “Importance Multiplier” or remove the bind , the scene will be all black or all red if no materials assigned to it:
will be black if wall material assigned to it:
will be all red if no material assigned to it:
all in all, there must be" light and sutiable bsdf" to make a scene render correctly if you use physical light simulation.