#===========================================================
# Script: multipassSetup.cmd
# Author: Gavin Harrison
# Abstract: This script wires multiple shader operators into
# a file SOP for multipass rendering
#===========================================================


# Change directory into the required geo operator
# 'geo1' should be replaced with the relevant name
opcf /obj/geo1/

# Set counter
set i = 1

# Add a merge SOP
opadd -n merge output

	# Get the contents of the geo operator
	foreach name(`execute("opls")`)

		# Get the type
		set type = `execute("optype -t $name")`

		# Add shaders if the type is a file SOP
		if ($type == file)

			# Add a reverse SOP and wire it to the file SOP
			opadd -n reverse reverse$i
			opwire $name -0 reverse$i

			# Add a texture shader and wire it to the reverse SOP
			opadd -n shop texture$i
			opwire reverse$i -0 texture$i

			# Add a diffuse shader, set its surface parameter and wire it to the reverse SOP
			opadd -n shop diffuse$i
			opparm diffuse$i quicksurface ( /shop/diffuse )
			opwire reverse$i -0 diffuse$i

			# Add a specular shader, set its surface parameter and wire it to the reverse SOP
			opadd -n shop specular$i
			opparm specular$i quicksurface ( /shop/specular )
			opwire reverse$i -0 specular$i

			# Add a shadow shader, set its surface parameter and wire it to the reverse SOP
			opadd -n shop shadow$i
			opparm shadow$i quicksurface ( /shop/shadow )
			opwire reverse$i -0 shadow$i

			# Wire all the shaders into a switch
			opadd -n switch switch$i
			opwire texture$i -0 switch$i
			opwire diffuse$i -1 switch$i
			opwire specular$i -2 switch$i
			opwire shadow$i -3 switch$i

			# Set counter
			set j = `$i - 1`

			# Wire the switches into the merge SOP
			opwire switch$i -$j output

			# Set counter
			set i = `$i + 1`

		endif

	end

# Set the display and render flag for the merge SOP
opset -d on -r on output