Final Gather Shadow

[mazm]

Al Salmo 3laykom

This image is the alpha for my render
i created a plane to receive the shadow from the IBL, but when i render it i can see the edges for the plane, i tried to turn off primery visablity but when i did this i can not see any shadow

can anyone tell me how to avoid this edges

thanks

[rabieart]

1st
u have to render this as it is
2nd
give ur plan in anther scene black surface shader
then bring the 2 seq. in your comp
and put the black plan on the gray 1
so in this case u get a black bg which u can use later as a pure alpha

[mazm]

hello my friend, i think there is no one here want to help except you.... thanks a lot
but what you said is to complicated dude, i did this before with use background shader and it was working perfect even i tried to replace the car with sphere and it working i think there is something wrong in the car

i got what you mean but this is not the best way

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[rabieart]

hmmmm
actually i never try to use the bg shader
but i heard 7azem sabry recommend teh surface shader alot and i ask a li8er from rain maker studio he also said wt 7azem said here before


good luck dude

[rabieart]

u may also scaling ur 3d mesh to avoid this edge