this is my first post here and i will appreciate it a lot if someone helps me ( i am in a tight deadline)
so here is the problem (it is not strictly a combustion question):
1- i am creating an Ad where there is a field of grass made in 3dsmax using Hair WSM and rendered using default scanline render.
2- composited on top of that a number of trees made in max and rendered with VRay and casting shadow on a matted-shadow plane(the same plane used to grow grass in step1 but obviously without the grass)
3-when composited using combustion the problem is that the shadow matte created in max (casted over a plane with no grass) will affect badly the grass field layer (see the pic)so it appears like there is no grass where the shadow is ...I know it is multipling the image of the shadow wich is planar(no grass ) with the grass underneath it.
how to solve this problem i know the major techniques of matte-shadow compositing but i cannnot find a suitable and proffesional way to solve this.
thanks for your time.