Upload 44 files

.gitattributes

@@ -1024,3 +1024,11 @@ vae/cm3d/GameData/voice_personal_om001.arc filter=lfs diff=lfs merge=lfs -text
 vae/cm3d/GameData/voice_personal_om002.arc filter=lfs diff=lfs merge=lfs -text
 vae/cm3d/GameData/voice.arc filter=lfs diff=lfs merge=lfs -text
 vae/cm3d/GameData/voice2.arc filter=lfs diff=lfs merge=lfs -text
+vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiA.obj filter=lfs diff=lfs merge=lfs -text
+vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiB.obj filter=lfs diff=lfs merge=lfs -text
+vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiC.obj filter=lfs diff=lfs merge=lfs -text
+vae/Irand/island/obj/isBayCedarA1/isBayCedarA1.obj filter=lfs diff=lfs merge=lfs -text
+vae/Irand/island/textures/isPalmDead/Color/rootball0001_geo.ptx filter=lfs diff=lfs merge=lfs -text
+vae/Irand/island/textures/isPalmDead/Color/trunk0001_geo.ptx filter=lfs diff=lfs merge=lfs -text
+vae/Irand/island/textures/isPalmDead/Displacement/rootball0001_geo.ptx filter=lfs diff=lfs merge=lfs -text
+vae/Irand/island/textures/isPalmDead/Displacement/trunk0001_geo.ptx filter=lfs diff=lfs merge=lfs -text

vae/Irand/island/json/cameras/beachCam.json

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vae/Irand/island/json/cameras/birdseyeCam.json

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vae/Irand/island/json/cameras/dunesACam.json

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vae/Irand/island/json/cameras/grassCam.json

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vae/Irand/island/json/cameras/palmsCam.json

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vae/Irand/island/json/cameras/rootsCam.json

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vae/Irand/island/json/cameras/shotCam.json

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vae/Irand/island/obj/isBayCedarA1/archives/archivebaycedar0001_mod.hier

@@ -0,0 +1,3 @@
+{
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+}

vae/Irand/island/obj/isBayCedarA1/archives/archivebaycedar0001_mod.mtl

@@ -0,0 +1,4 @@
+newmtl petiole
+newmtl leaves
+newmtl barkSimple
+newmtl bark

vae/Irand/island/obj/isBayCedarA1/archives/archivebaycedar0001_mod.obj

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+
+mtllib archivebaycedar0001_mod.mtl
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vae/Irand/island/obj/isBayCedarA1/isBayCedarA1.mtl

@@ -0,0 +1,3 @@
+newmtl leaves
+newmtl barkSimple
+newmtl bark

vae/Irand/island/obj/isBayCedarA1/isBayCedarA1.obj

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:da68baa86c373fa25b8216841a38dcb10d50054f467ef004ac8af0902c228cce
+size 125931183

vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiA.mtl

@@ -0,0 +1,3 @@
+newmtl leaves
+newmtl barkSimple
+newmtl bark

vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiA.obj

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:865d9dd9b5bde8c1de02c382e8c9e6fa5be5523807ceb7afabddb0d30011baa3
+size 136106985

vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiB.mtl

@@ -0,0 +1,3 @@
+newmtl leaves
+newmtl barkSimple
+newmtl bark

vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiB.obj

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c130c615b6c104ff95b38e24b969d9239408999e6d9909ae7cc7db925e533b78
+size 47593478

vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiC.mtl

@@ -0,0 +1,3 @@
+newmtl leaves
+newmtl barkSimple
+newmtl bark

vae/Irand/island/obj/isBayCedarA1/isBayCedarA1_bonsaiC.obj

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e2503b424c3f073a3b7e40b51f0008798396c6950b6f4feee41658456d460b4e
+size 39661755

vae/Irand/island/scripts/embree/README.txt

@@ -0,0 +1,25 @@
+This folder contains scripts to convert the Moana Island scene into
+the Embree XML format.
+
+For the scripts to work you need to install the Embree Ray Tracing
+Kernels v3.1.0, which can be downloaded from
+https://github.com/embree/embree/releases/tag/v3.1.0. Make
+sure that the folder containing the `convert` application that comes
+with Embree is inside your PATH.
+
+Now you can invoke the conversion from the root folder of the Moana
+Island scene:
+
+
+    cd island
+    ./scripts/embree/embreeConvertAll.sh
+
+The conversion will take a couple of hours and will require 60GB of
+system memory. When the conversion finished you can render the model,
+e.g. using the Embree tutorial pathtracer:
+
+    path_to_embree/bin/pathtracer -c island/embree/island.ecs
+
+The Embree pathtracer does not support the PTEX textures nor advanced
+materials of the model, this all materials will get rendered with simple
+diffuse colors provided with the model only.

vae/Irand/island/scripts/embree/embreeConvert.py

@@ -0,0 +1,201 @@
+#!/usr/bin/env python
+"""
+give a json element file, create pbrt scenes and objects. This should create the main element/element.xml,
+element/geometry.xml and element/materials.xml. In addition, if the element has instanced primitives, then
+for each primitive, a primitive subdirectory is created, along with a primitive.xml file and an archive_geometry
+pbrt file for each archive referenced by that primitive description:
+
+element/element.xml
+element/element_geometry.xml
+element/material.xml
+element/objects.xml
+
+element/primitive/primitive.xml
+element/primitive/archive_geometry.xml
+
+"""
+import sys
+import os
+import argparse
+import json
+import embreeutils as pu
+
+ISLANDDIR = os.getcwd()
+
+
+def parseArgs():
+
+    parser = argparse.ArgumentParser(
+        description="Takes an element and creates pbrt element version of the geometry and scene.")
+
+    parser.add_argument('element', metavar='ELEM', help="Element to load.")
+    parser.add_argument('--frameRange', type=str, default="1", help="Frame range to export, i.e. 1 or 1-3 or 1-5:2")
+    parser.add_argument('-o', '--outdir', default=ISLANDDIR, help="Where to write out the pbrt files(s).")
+    parser.add_argument('--skipObj', action='store_true', default=False, help="Skip Obj Conversion")
+    parser.add_argument('--skipCopies', action='store_true', default=False, help="Skip Instanced Copies Obj Generation")
+    parser.add_argument('--skipArchives', action='store_true', default=False, help="Skip Archive Conversion")
+    parser.add_argument('--skipMat', action='store_true', default=False, help="Skip Material Generation")
+    parser.add_argument('--skipPrims', action='store_true', default=False, help="Skip Primitive(s) PBRT Generation")
+    parser.add_argument('--skipMain', action='store_true', default=False, help="Skip Main PBRT Generation")
+    parser.add_argument('--prim', default="", help="Specific json primitive file to load, i.e. xgGrass")
+
+    return parser.parse_args()
+
+
+def main():
+    args = parseArgs()
+
+    if args.element == "island":
+        # create the main island file.
+        pu.writeMainPbrtFile()
+        pu.writeEmbreeEcsFile()
+        return
+
+    jsonFile = os.path.join("json", args.element, args.element + ".json")
+    with open(jsonFile, "r") as jf:
+        jsonDict = json.load(jf)
+
+    # pull data from dict
+    element = jsonDict["name"]
+    objFile = jsonDict["geomObjFile"]
+    matFile = jsonDict["matFile"] if "matFile" in jsonDict else ""
+    instancedPrimitives = jsonDict["instancedPrimitiveJsonFiles"] if "instancedPrimitiveJsonFiles" in jsonDict else {}
+    instancedCopies = jsonDict["instancedCopies"] if "instancedCopies" in jsonDict else {}
+    primDesc = args.prim
+
+    archiveFiles = {}
+    primitiveFiles = []
+
+    print "Preparing embree export for element: ", element
+    elementDir = os.path.join(args.outdir, "embree", element)
+
+    # make all the directories we're going to need
+    for outDir in [elementDir] + [os.path.join(args.outdir, "embree", element, x) for x in instancedPrimitives]:
+        if not os.path.exists(outDir):
+            os.makedirs(outDir)
+
+    # relative path and full path names of the output files for embree.
+    pbrtRelOutElement = os.path.join(element, element + ".xml")
+    pbrtRelOutGeometry = os.path.join(element, element + "_geometry.xml")
+    pbrtRelOutMaterials = os.path.join(element, "materials.xml")
+    pbrtOutElement = os.path.join(elementDir, element + ".xml")
+    pbrtOutGeometry = os.path.join(elementDir, element + "_geometry.xml")
+    pbrtOutMaterials = os.path.join(elementDir, "materials.xml")
+
+    ##############################################
+    # Convert materials for the element --> element/materials.xml
+    # -- we convert these first because we need the information to insert it into the OBJs.
+    if not args.skipMat:
+        print "################################################# Converting Materials: "
+        pu.matToPbrt(element, matFile, pbrtOutMaterials)
+
+    ##############################################
+    # Convert geometry -- main file--> element/element_geometry.xml  (to be consistent w/ instances)
+    if not args.skipObj:
+        print "################################################# Converting main element OBJ file: "
+        print "Exporting: ", pbrtOutGeometry
+        pu.geomToPbrt(objFile, pbrtOutGeometry, "", "../../")
+
+        ##############################################
+        # Convert geometry #2 -- instanced copies with their own geometry (isPalmRig special case code....)
+        if instancedCopies:
+            print "################################################# Converting Instanced copies OBJ files: "
+            for instance, icDict in instancedCopies.iteritems():
+                if "geomObjFile" in icDict:
+                    pbrtOutInstGeometry = os.path.join(elementDir, instance + "_geometry.xml")
+                    print "Exporting: ", pbrtOutInstGeometry
+                    pu.geomToPbrt(icDict['geomObjFile'], pbrtOutInstGeometry , "", "../../")
+
+    ##############################################
+    # convert geometry #3 - primitives json files and associated archives --> element/primitive/archive_geometry.xml
+    # note: we don't need to run this for instanced copies -- we're assuming they use the same primitives.
+    if not args.skipArchives or not instancedPrimitives:
+        print "################################################# Converting Instanced JSON files and OBJ archives: "
+        for primitiveName, ipDict in instancedPrimitives.iteritems():
+            # this file is the instance name and transforms of each archive, keyed by archive (obj)
+            if "archives" in ipDict:
+                print "Create geometry data for all archives associated with ", primitiveName
+                archiveFiles[primitiveName] = []
+                for archive in ipDict["archives"]:
+                    # this is a list of all the archives referenced above.
+                    base = os.path.basename(archive)[:-4]
+                    pbrtOutArchiveGeometry = os.path.join(elementDir, primitiveName, base + "_geometry.xml")
+                    if not os.path.exists(pbrtOutArchiveGeometry):
+                        print "Exporting: ", pbrtOutArchiveGeometry
+                        if ipDict["type"] == "archive":
+                            pu.geomToPbrt(archive, pbrtOutArchiveGeometry, "", "../../../")
+                        else:
+                            #variantMatFile = os.path.join(args.outdir, "json", ipDict["element"],"materials.json" )
+                            variantMatFile = os.path.join("embree", ipDict["element"],"materials.xml" )
+                            print "...Exporting variant with alternate material file: %s" % variantMatFile
+                            pu.geomToPbrt(archive, pbrtOutArchiveGeometry, variantMatFile,"../../../")
+                        archiveFiles[primitiveName].append(pbrtOutArchiveGeometry)
+
+    else:
+        # If we skipped creating archives, re-build the list here here.
+        if instancedPrimitives:
+            for primitiveName, iDict in instancedPrimitives.iteritems():
+                archiveFiles[primitiveName] = [os.path.join(element, primitiveName, x)
+                                               for x in os.listdir(os.path.join(elementDir, primitiveName))
+                                               if x.endswith("geometry.xml")]
+
+    if not args.skipPrims:
+        ##############################################
+        # Create primitives #1: element/primitive/instance_primitive.xml. This creates either
+        # an archive type or curve type of file. All created files are added to a list for later
+        # referencing in the main element pbrt file.
+        print "################################################# Creating Primitive reference files: "
+        for primitiveName, ipDict in instancedPrimitives.iteritems():
+            if primDesc and primDesc != primitiveName:
+                continue
+            # this file is the instance name and transforms of each archive, keyed by archive (obj)
+            print "Create main primitive file for:", primitiveName, "using", ipDict["jsonFile"]
+            primitiveFiles.append(pu.jsonPrimitiveToPbrt(ipDict["type"] if "type" in ipDict else "", element, primitiveName, ipDict))
+
+            #############################################
+            # Create primitve #3 -- for all 'element' archive types, create any included primitives associated with
+            # them, i.e. - isBayCedarA1_bonsaiA_xgBonsai
+            if "type" in ipDict and ipDict["type"] == "element":
+                sourceDict = pu.readJsonFile(os.path.join("json", ipDict["element"], ipDict["element"]+".json"))
+                for variant, vDict in sourceDict["variants"].iteritems():
+                    if "instancedPrimitiveJsonFiles" not in vDict:
+                        continue
+                    for primitiveName, vipDict in vDict["instancedPrimitiveJsonFiles"].iteritems():
+                        primitiveFiles.append(pu.jsonPrimitiveToPbrt(vipDict["type"], ipDict["element"], primitiveName, vipDict))
+
+            ##############################################
+            # Create primitives #3 -- instanced copies with their own primitives (i,e, - isPalmRig3 w xgFronds3)
+            if instancedCopies:
+                print "################################################# Creating instanced copies primitives files: "
+                for instance, icDict in instancedCopies.iteritems():
+                    if "instancedPrimitiveJsonFiles" in icDict:
+                        for primitiveName, ipDict in icDict["instancedPrimitiveJsonFiles"].iteritems():
+                            print "Create primitive file for:", primitiveName, "using", ipDict["jsonFile"]
+                            primitiveFiles.append(pu.jsonPrimitiveToPbrt(ipDict["type"] if "type" in ipDict else "", element, primitiveName, ipDict))
+
+    else:
+        # If we skipped the conversion, build primitiveFiles list here.
+        for primitiveName in instancedPrimitives:
+            primitiveFiles += [os.path.join(element, primitiveName, x)
+                                           for x in os.listdir(os.path.join(elementDir, primitiveName))
+                                           if x.endswith(".xml") and
+                                              not x.endswith("geometry.xml")]
+
+    if not args.skipMain:
+        ##############################################
+        # Create the main pbrt reference file with builds the hierarchy via includes and transform.
+        # --> element/element.xml
+        print "################################################# Creating main element reference: "
+        print "Exporting:", pbrtOutElement
+        pu.writeMainElement(pbrtOutElement, pbrtRelOutMaterials, pbrtRelOutGeometry, primitiveFiles,
+                            sourceJsonFile=jsonFile)
+
+
+if __name__ == "__main__":
+    if main():
+        sys.exit(0)
+    sys.exit(1)
+
+
+
+

vae/Irand/island/scripts/embree/embreeConvertAll.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+CONVERT=convert
+
+./scripts/embree/embreeConvert.py isHibiscus
+./scripts/embree/embreeConvert.py isIronwoodA1
+./scripts/embree/embreeConvert.py isKava
+./scripts/embree/embreeConvert.py isNaupakaA
+./scripts/embree/embreeConvert.py isBayCedarA1
+./scripts/embree/embreeConvert.py isGardeniaA
+./scripts/embree/embreeConvert.py isHibiscusYoung
+./scripts/embree/embreeConvert.py isIronwoodB
+./scripts/embree/embreeConvert.py isLavaRocks
+./scripts/embree/embreeConvert.py isPalmDead
+./scripts/embree/embreeConvert.py isPalmRig
+./scripts/embree/embreeConvert.py isPandanusA
+./scripts/embree/embreeConvert.py osOcean
+./scripts/embree/embreeConvert.py isCoral
+./scripts/embree/embreeConvert.py isBeach
+./scripts/embree/embreeConvert.py isCoastline
+./scripts/embree/embreeConvert.py isDunesA
+./scripts/embree/embreeConvert.py isDunesB
+./scripts/embree/embreeConvert.py isMountainA
+./scripts/embree/embreeConvert.py isMountainB
+./scripts/embree/embreeConvert.py island
+
+for f in `find obj -type d`; do echo $f; mkdir xml${f:3}; done
+for f in `find obj/ -type f -name "*.obj" `; do echo $f; $CONVERT -reference-materials -i $f -o xml${f:3:-3}xml; done
+
+$CONVERT -i embree/isHibiscus/isHibiscus.xml -o embree/isHibiscus.xml
+$CONVERT -i embree/isIronwoodA1/isIronwoodA1.xml -o embree/isIronwoodA1.xml
+$CONVERT -i embree/isKava/isKava.xml -o embree/isKava.xml
+$CONVERT -i embree/isNaupakaA/isNaupakaA.xml -o embree/isNaupakaA.xml
+$CONVERT -i embree/isBayCedarA1/isBayCedarA1.xml -o embree/isBayCedarA1.xml
+$CONVERT -i embree/isGardeniaA/isGardeniaA.xml -o embree/isGardeniaA.xml
+$CONVERT -i embree/isHibiscusYoung/isHibiscusYoung.xml -o embree/isHibiscusYoung.xml
+$CONVERT -i embree/isIronwoodB/isIronwoodB.xml -o embree/isIronwoodB.xml
+$CONVERT -i embree/isLavaRocks/isLavaRocks.xml -o embree/isLavaRocks.xml
+$CONVERT -i embree/isPalmDead/isPalmDead.xml -o embree/isPalmDead.xml
+$CONVERT -i embree/isPalmRig/isPalmRig.xml -o embree/isPalmRig.xml
+$CONVERT -i embree/isPandanusA/isPandanusA.xml -o embree/isPandanusA.xml
+$CONVERT -i embree/osOcean/osOcean.xml -o embree/osOcean.xml
+$CONVERT -i embree/isCoral/isCoral.xml -o embree/isCoral.xml
+$CONVERT -i embree/isBeach/isBeach.xml -o embree/isBeach.xml
+$CONVERT -i embree/isCoastline/isCoastline.xml -o embree/isCoastline.xml
+$CONVERT -i embree/isDunesA/isDunesA.xml -o embree/isDunesA.xml
+$CONVERT -i embree/isDunesB/isDunesB.xml -o embree/isDunesB.xml
+$CONVERT -i embree/isMountainA/isMountainA.xml -o embree/isMountainA.xml
+$CONVERT -i embree/isMountainB/isMountainB.xml -o embree/isMountainB.xml
+
+$CONVERT -i embree/island.xml -flatten-group -o embree/island_flattened.xml
+
+

vae/Irand/island/scripts/embree/embreeutils.py

@@ -0,0 +1,896 @@
+import os
+import sys
+import fcntl
+import stat
+import json
+import math
+import subprocess
+import fnmatch
+import re
+import tempfile
+import shutil
+
+OUTDIR = os.getcwd()
+CAMFILE = OUTDIR + "/json/cameras/shotCam.json"
+LIGHTFILE = OUTDIR + "/json/lights/lights.json"
+
+#OBJ2PBRT = shutil.which("obj2pbrt")
+#OCEAN2PBRT = shutil.which("obj2pbrt")
+TMPDIR = '/tmp'
+IDENTITY = [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]
+
+# DISNEY: Solids has scattrDistR,G and B; Thin has flatness and diffTrans
+# PBRT: difftrans and flatness are specific to the BSDF, enabled by the thin parameter
+DIS2PBRT = {
+    "metallic": "float metallic",
+    "roughness": "float roughness",
+    "anisotropic": "float anisotropic",
+    "specularTint": "float speculartint",
+    "sheen": "float sheen",
+    "sheenTint": "float sheentint",
+    "clearcoat" : "float clearcoat",
+    "clearcoatGloss": "float clearcoatgloss",
+    "specTrans" : "float spectrans",
+    "ior" : "float eta"
+}
+
+
+def mon2lin(color):
+    return [math.pow(color[0], 2.2), math.pow(color[1], 2.2), math.pow(color[2], 2.2)]
+
+
+def readJsonFile(jsonFile):
+    """
+    Wrapper script to import json file as dict.
+    :param jsonFile: file as string
+    :return: dict
+    """
+    with open(os.path.abspath(jsonFile), "r") as jf:
+        jsonDict = json.load(jf)
+    return jsonDict if jsonDict else {}
+
+
+def writeEmbreeEcsFile():
+    ecsFilePath = os.path.abspath("embree/island.ecs")
+    ecsFile = os.open(ecsFilePath, os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+    fcntl.flock(ecsFile, fcntl.LOCK_EX)
+    try:
+        f = os.fdopen(ecsFile,'w')
+    except IOError as (errno, strerror):
+        print "Couldn't open %s for write: %s" % (ecsFilePath, strerror)
+        return False
+
+    f.writelines('-i island_flattened.xml --instancing flattened --verbose 1\n')
+
+    os.fsync(ecsFile)
+    fcntl.flock(ecsFile, fcntl.LOCK_UN)
+    f.close()
+    os.chmod(ecsFilePath, stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IWGRP|stat.S_IROTH|stat.S_IWOTH)
+    print "Writing main ECS file: ", ecsFilePath
+    
+    return True
+
+def writeMainPbrtFile(outPbrtFile="embree/island.xml"):
+    """
+    Create the main XML file with has all the camera, lights and geometry includes and WorldBegin/End
+    :param outPbrtFile: file to create
+    :return: success
+    """
+    pbrtFile = os.path.abspath(outPbrtFile)
+    pbrtFileObj = os.open(pbrtFile, os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_EX)
+
+    try:
+        f = os.fdopen(pbrtFileObj,'w')
+    except IOError as (errno, strerror):
+        print "Couldn't open %s for write: %s" % (pbrtFile, strerror)
+        return False
+
+    f.writelines('<?xml version="1.0"?>\n\n')
+    f.writelines('<scene>\n')
+    #f.writelines(createDefaultHeader())
+
+    with open(CAMFILE, "r") as cf:
+      cameraDict = json.load(cf)
+
+    f.writelines('  <PerspectiveCamera name="default"\n')
+    f.writelines('    from="%f %f %f"\n' % (cameraDict["eye"][0], cameraDict["eye"][1], cameraDict["eye"][2]))
+    f.writelines('    to="%f %f %f"\n' % (cameraDict["look"][0], cameraDict["look"][1], cameraDict["look"][2]))
+    f.writelines('    up="%f %f %f"\n' % (cameraDict["up"][0], cameraDict["up"][1], cameraDict["up"][2]))
+    f.writelines('    fov="%f"\n' % cameraDict["fov"])
+    f.writelines('  />\n')
+    f.writelines('\n')
+    
+    f.writelines('  <DirectionalLight>\n')
+    f.writelines('    <AffineSpace>\n')
+    f.writelines('      1 0 -1 0\n')
+    f.writelines('      0 0 -1 0\n')
+    f.writelines('      0 1  0 0\n')
+    f.writelines('    </AffineSpace>\n')
+    f.writelines('    <E>10 10 10</E>\n')
+    f.writelines('  </DirectionalLight>\n')
+    f.writelines('\n')
+
+    f.writelines('  <AmbientLight>\n')
+    f.writelines('    <AffineSpace>\n')
+    f.writelines('      1 0 0 0\n')
+    f.writelines('      0 1 0 0\n')
+    f.writelines('      0 0 1 0\n')
+    f.writelines('    </AffineSpace>\n')
+    f.writelines('    <L>0.5 0.5 0.5</L>\n')
+    f.writelines('  </AmbientLight>\n')
+    f.writelines('\n')
+
+    # recommended after much testing...
+    #f.writelines('Sampler "sobol" "integer pixelsamples" 1024\n')  # went up to 8192
+    #f.writelines('Integrator "volpath" "integer maxdepth" [10]\n')
+
+    #f.writelines(createLights(LIGHTFILE))
+    f.writelines(insertElements())
+    f.writelines('</scene>\n\n')
+
+    os.fsync(pbrtFileObj)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_UN)
+    f.close()
+    os.chmod(pbrtFile, stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IWGRP|stat.S_IROTH|stat.S_IWOTH)
+    print "Writing main XML file: ", pbrtFile
+    return True
+
+
+def createDefaultHeader():
+    header = 'Scale -1 1 1\n'
+    header += 'Film "image" "string filename" ["island.png"]\n'
+    header += '     "integer xresolution" [1024] "integer yresolution" [429]\n'
+    header += '     "float maxsampleluminance" 10\n\n'
+    return header
+
+
+def createCamera(f,jsonCamFile):
+    """
+    :param: camFile: Json file with raw camera data from maya.
+    :return:
+    """
+                
+    #cameraTxt = "LookAt %f %f %f" % (cameraDict["eye"][0], cameraDict["eye"][1], cameraDict["eye"][2])
+    #cameraTxt += " %f %f %f" % (cameraDict["look"][0], cameraDict["look"][1], cameraDict["look"][2])
+    #cameraTxt += " %f %f %f\n" % (cameraDict["up"][0], cameraDict["up"][1], cameraDict["up"][2])
+    #cameraTxt += """Camera "perspective" "float fov" [%f]\n""" % cameraDict["fov"]
+    #cameraTxt += """                     "float screenwindow" [%f %f %f %f]\n""" % (cameraDict["screenwindow"][0], cameraDict["screenwindow"][1], cameraDict["screenwindow"][2], cameraDict["screenwindow"][3])
+    #cameraTxt += """                     "float frameaspectratio" [%f]\n""" % cameraDict["ratio"]
+    #cameraTxt += """                     "float lensradius" [%f]\n""" % cameraDict["lensRadius"]
+    #cameraTxt += """                     "float focaldistance" [%f]\n""" % cameraDict["centerOfInterest"]
+    #return cameraTxt
+
+
+def createLights(jsonLightsFile):
+    lightText = ""
+
+    with open(os.path.abspath(jsonLightsFile), "r") as lf:
+        lightsDict = json.load(lf)
+
+    for lightName, lightDict in lightsDict.iteritems():
+        # common values
+        lc = mon2lin(lightDict["color"])
+        le = math.pow(2, lightDict["exposure"])
+        rot = lightDict["rotation"]
+        loc = lightDict["location"]
+        tm = lightDict["translationMatrix"]
+
+        if lightDict["type"] == "dome":
+            #mapname = lightDict["map"]
+            mapname = os.path.basename(lightDict["envmapCamera"])
+            lightText += "# skydome: %s\n" % lightName
+            lightText += "AttributeBegin\n"
+            #lightText += "    Translate %f %f %f\n" % (loc[0], loc[1], loc[2])
+            #lightText += "    Rotate %f %f %f 1\n" % (rot[0], rot[1], rot[2])
+            # This is what it took to line up our HDR image. YMMV
+            lightText += "    Scale -1 1 1\n"
+            lightText += "    Rotate 90 -1 0 0\n"
+            lightText += "    Rotate 65 0 0 1\n"
+            lightText += """    LightSource "infinite" "string mapname" "%s"\n""" % os.path.join("..","textures",mapname)
+            lightText += "AttributeEnd\n\n"
+
+        elif lightDict["type"] == "distant":
+            lightText += "# distant light: %s\n" % lightName
+            lightText += "AttributeBegin\n"
+            lightText += "    Translate %f %f %f\n" % (loc[0], loc[1], loc[2])
+            lightText += "    Rotate %f %f %f 1\n" % (rot[0], rot[1], rot[2])
+            lightText += """    LightSource "distant" "point from" [ 0.0 0.0 0.0]\n"""
+            lightText += """    "point to" [ 0.0 0.0 -1.0 ]\n"""
+            lightText += """    "rgb L" [ %f %f %f ]\n""" % (lc[0], lc[1], lc[2])
+            lightText += "AttributeEnd\n\n"
+
+        elif lightDict["type"] == "quad":
+            hw = float(lightDict["width"]) / 2
+            hh = float(lightDict["height"]) / 2
+            lightText += "# quad light w/ simple triangle mesh: %s\n" % lightName
+            lightText += "AttributeBegin\n"
+            lightText += """    AreaLightSource "diffuse" "rgb L" [%f %f %f]\n""" % (lc[0]*le, lc[1]*le, lc[2]*le)
+            lightText += "    Transform [%f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f]\n" % tuple(tm)
+            lightText += """    Shape "trianglemesh"  "integer indices" [0 2 1 0 3 2] "float alpha" 0\n"""
+            lightText += """    "point P"[%f  %f 0    %f  %f 0    %f %f 0     %f %f 0]\n""" % (hw, hh, -hw, hh, -hw, -hh, hw, -hh)
+            lightText += "AttributeEnd\n\n"
+
+        else:
+            print "Light type not supported:", lightName, lightDict["type"]
+
+    return lightText
+
+
+def createDefaultTail():
+    return "\nWorldEnd\n"
+
+
+def createGeometryHeader(gp, jsonFile, materialsName):
+    gp.write("<!--Created from %s-->\n" % jsonFile)
+    gp.write("AttributeBegin\n")
+    gp.write("    Include \"%s\"\n\n" % materialsName)
+
+
+def createGeometryTail(gp):
+    gp.write("AttributeEnd\n")
+
+
+def insertElements():
+    elementText = ''
+    for element in os.listdir(os.path.abspath("obj")):
+        elementText += '  <xml src="%s"/>\n'% (element + ".xml")
+    return elementText
+
+
+def geomToPbrt(objFile, pbrtFile, matFile, root_folder):
+    """
+    That's an obj file and converts it to pbrt using 'obj2pbrt'. In addition, to support a binding hack, it comments
+    out the MakeNamedMaterial lines left by 'obj2pbrt'. We are just using the bindings, since OBJ format does not
+    support our materials.
+    [NEW] Added hardcoded materials where a mesh-specific texture is required.
+    :param objFile:
+    :param pbrtFile:
+    :param bakeTextures:
+    :return:
+    """
+    # Make sure we have absolute path to both files.
+    fpObjFile = os.path.abspath(objFile)
+    fpPbrtFile = os.path.abspath(pbrtFile)
+    # in order to find the mtl file, we need to be >in< the obj directory.
+    dwd = os.getcwd()
+    os.chdir(os.path.dirname(fpObjFile))
+    print "Creating pbrt geometry from", objFile
+
+    xmlFile = "xml/"+objFile[4:-4]+".xml"
+    
+    f = open(pbrtFile,'w')
+    f.writelines('<?xml version="1.0"?>\n\n')
+    f.writelines('<scene>\n');
+    if matFile != "": f.writelines('  <xml src="'+root_folder+'%s"/>\n' % matFile);
+    f.writelines('  <xml src="'+root_folder+'%s"/>\n' % xmlFile);
+    f.writelines('</scene>\n');
+    f.close()
+
+    os.chdir(dwd)
+
+    # if we're using textures, we need to insert the texture overrides directly into the geom.
+    #insertTextureOverrides(fpPbrtFile, matFile)
+
+def writeMaterial(f, matName, valueDict):
+
+    f.writelines('<assign type="material" id="%s">\n'%matName)
+    f.writelines('  <material>\n')
+    f.writelines('    <code>"OBJ"</code>\n')
+    f.writelines('    <parameters>\n')
+
+    if 'baseColor' in valueDict:
+        color = mon2lin(valueDict['baseColor'])
+        f.writelines('      <float3 name="Kd">%1.2f %1.2f %1.2f</float3>\n'% (color[0], color[1],color[2]))
+    else:
+        print "WARNING WARNING WARNING: Can not find 'baseColor' in", element, matName
+        f.writelines('      <float3 name="Kd">1 0 0</float3>\n')
+
+    #for val in valueDict:
+    #    if val in DIS2PBRT:
+    #        # common parameters
+    #        f.writelines('    "%s" [%1.2f]\n' % (DIS2PBRT[val], valueDict[val]))
+
+    #if "type" in valueDict and valueDict["type"] == "thin":
+    #    f.writelines('    "bool thin" ["true"]\n')
+    #    f.writelines('    "float difftrans" [%1.2f]\n' % valueDict["diffTrans"])
+    #    f.writelines('    "float flatness" [%1.2f]\n\n' % valueDict['flatness'])
+    #else: # solid
+    #    f.writelines('    "rgb scatterdistance" [%1.2f %1.2f %1.2f]\n\n' % (valueDict["scatterDistance"][0],
+    #                                                                 valueDict["scatterDistance"][1],
+    #                                                                 valueDict["scatterDistance"][2]))
+
+    f.writelines('    </parameters>\n')
+    f.writelines('  </material>\n\n')
+    f.writelines('</assign>\n\n')
+        
+def matToPbrt(element, matFile, pbrtFile):
+    """
+    Take a json file and convert it into a pbrt "Named" material file which will be used for reference.
+    :param element: Element name -- Used for error codes and top-of-file comments.
+    :param matFile: Json material file to be parsed.
+    :param pbrtFile: Pbrt material file to be output.
+    :return: None
+    """
+    with open(matFile, "r") as jf:
+        matDict = json.load(jf)
+
+    if not matDict:
+        print "ERROR: Unable to parse matfile: ", matFile
+        return
+    print "Converting ", matFile
+
+    pbrtFileObj = os.open(pbrtFile, os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_EX)
+
+    try:
+        f = os.fdopen(pbrtFileObj,'w')
+    except IOError as (errno, strerror):
+        print "Couldn't open %s for write: %s" % (pbrtFile, strerror)
+        return
+
+    f.writelines('<?xml version="1.0"?>\n\n')
+    f.writelines("<!--Materials for %s-->\n"%element)
+    f.writelines("<!--Converted from %s-->\n\n"%matFile)
+
+    f.writelines('<scene>\n\n')
+
+    f.writelines('<assign type="material" id="default">\n')
+    f.writelines('  <material>\n')
+    f.writelines('    <code>"OBJ"</code>\n')
+    f.writelines('    <parameters>\n')
+    f.writelines('      <float3 name="Kd">1 0 0</float3>\n')
+    f.writelines('    </parameters>\n')
+    f.writelines('  </material>\n\n')
+    f.writelines('</assign>\n\n')
+
+    for matName, valueDict in matDict.iteritems():
+
+        if matName == "hidden":
+            f.writelines('<assign type="material" id="%s">\n'%matName)
+            f.writelines('  <material>\n')
+            f.writelines('    <code>"OBJ"</code>\n')
+            f.writelines('    <parameters>\n')
+            f.writelines('      <float3 name="Kd">1 0 0</float3>\n')
+            f.writelines('    </parameters>\n')
+            f.writelines('  </material>\n')
+            f.writelines('</assign>\n\n')
+            continue
+
+        writeMaterial(f,matName,valueDict)
+        
+    f.writelines('</scene>\n\n')
+        
+    os.fsync(pbrtFileObj)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_UN)
+    f.close()
+    os.chmod(pbrtFile, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP | stat.S_IROTH | stat.S_IWOTH)
+    print "Writing XML file: ", pbrtFile
+
+
+def jsonPrimitiveToPbrt(primType, element, primitiveName, iDict):
+    if primType == "curve":
+        return jsonPrimitiveCurveToPbrt(element, primitiveName, iDict)
+    elif primType == "element":
+        return jsonPrimitiveElementToPbrt(element, primitiveName, iDict)
+    else:
+        return jsonPrimitiveArchiveToPbrt(element, primitiveName, primitiveJsonFile=iDict["jsonFile"])
+
+
+def jsonPrimitiveArchiveToPbrt(element, primitiveName, primitiveJsonFile):
+    """
+    Create the pbrt reference file for a particular primitive instance. This will be a raw list
+    of all the instances that make up this particular primitive with the transformations.
+    :param element: The name of the element (used the build paths)
+    :param primitiveName: The name of the primitive description we're converting.
+    :param primitiveJsonFile: Json file containing the archives and all instances of them.
+    :return: The 'short' path name, which is the partial path without the pbrt directory in front
+    """
+    fileName = os.path.basename(primitiveJsonFile)[:-4] + "xml" if primitiveJsonFile else primitiveName + ".xml"
+    pbrtPrimitiveFile = os.path.join("embree", element, primitiveName, fileName)
+    root = "../../"
+    shortFileName = os.path.join(element, primitiveName, fileName)
+    iDict = readJsonFile(primitiveJsonFile)
+
+    pbrtFileObj = os.open(pbrtPrimitiveFile, os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_EX)
+
+    try:
+        f = os.fdopen(pbrtFileObj,'w')
+    except IOError as (errno, strerror):
+        print "Couldn't open %s for write: %s" % (pbrtPrimitiveFile, strerror)
+        return
+
+    f.writelines('<?xml version="1.0"?>\n\n')
+    f.writelines("<!--Converted from %s-->\n\n" % primitiveJsonFile)
+    f.writelines('<scene>\n\n')
+
+    for archive, primitiveDict in iDict.iteritems():
+        # Create one file per archive xgen Description
+        archiveName = os.path.basename(archive)[:-4]
+        for instanceName, transform in primitiveDict.iteritems():
+            writeInstance(f, root, archiveName, instanceName, transform, concat=True)
+
+    f.writelines('</scene>\n\n')
+    os.fsync(pbrtFileObj)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_UN)
+    f.close()
+    os.chmod(pbrtPrimitiveFile, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP | stat.S_IROTH | stat.S_IWOTH)
+    print "Writing primitive archive XML file: ", pbrtPrimitiveFile
+    return shortFileName
+
+
+def jsonPrimitiveCurveToPbrt(element, primitiveName, cDict):
+    """
+    Convert json primitive curve to pbrt curve
+    :param element: used to find json files
+    :param primitiveName: used to find json files
+    :param cDict: dictionary of all curves
+    :return:
+    """
+    primitiveJsonFile = cDict["jsonFile"]
+    matFile = os.path.join("json", element, "materials.json")
+    fileName = os.path.basename(primitiveJsonFile)[:-4] + "xml" if primitiveJsonFile else primitiveName + ".xml"
+    pbrtPrimitiveFile = os.path.join("embree", element, primitiveName, fileName)
+    shortFileName = os.path.join(element, primitiveName, fileName)
+    curveList = readJsonFile(primitiveJsonFile)
+
+    pbrtFileObj = os.open(pbrtPrimitiveFile, os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_EX)
+
+    try:
+        f = os.fdopen(pbrtFileObj,'w')
+    except IOError as (errno, strerror):
+        print "Couldn't open %s for write: %s" % (pbrtPrimitiveFile, strerror)
+        return
+
+    f.writelines('<?xml version="1.0"?>\n\n')
+    f.writelines("<!--Converted from %s-->\n\n" % primitiveJsonFile)
+    f.writelines('<scene>\n\n')
+
+    f.writelines('  <Curves type="round" basis="bspline">\n\n')
+
+    # Curves don't inherit materials like the OBJs so, so we need to insert the material at the top.
+    mat = findMaterial(primitiveName, readJsonFile(matFile))
+    if mat:
+      f.writelines('    <material id="%s"/>\n'%mat)
+    else:
+      f.writelines('    <material id="default"/>\n')
+      print "WARNING: curve has no material"
+    f.writelines('\n')
+    
+    i=0
+    f.writelines('    <indices>\n')
+    for curve in curveList:
+      i=writeCurveIndices(f, i, curve, cDict)
+      f.writelines('\n')
+    f.writelines('    </indices>\n')
+    f.writelines('\n')
+
+    f.writelines('    <positions>\n')
+    for curve in curveList:
+      writeCurveVertices(f, curve, cDict)
+      f.writelines('\n')
+    f.writelines('    </positions>\n')
+
+    f.writelines('  </Curves>\n\n')
+
+    f.writelines('</scene>\n\n')
+    os.fsync(pbrtFileObj)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_UN)
+    f.close()
+    os.chmod(pbrtPrimitiveFile, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP | stat.S_IROTH | stat.S_IWOTH)
+    print "Writing primitive curve XML file: ", pbrtPrimitiveFile
+    return shortFileName
+
+
+def jsonPrimitiveElementToPbrt(element, primitiveName, eDict):
+    """
+    The primitive being instanced around is a copy of another element, which could include its own primitive data.
+    :param element: The name of the element (used the build paths)
+    :param primitiveName: The name of the primitive description we're converting.
+    :param eDict: Dictionary includes reference element, possible variant and the source json file with the transforms
+    by variant. "base" variant is assumed to the the top level element definition.
+    :return: The 'short' path name, which is the partial path without the pbrt directory in front
+    """
+    primitiveJsonFile = eDict["jsonFile"]
+    fileName = os.path.basename(primitiveJsonFile)[:-4] + "xml" if primitiveJsonFile else primitiveName + ".xml"
+    pbrtPrimitiveFile = os.path.join("embree", element, primitiveName, fileName)
+    root = "../../"
+    shortFileName = os.path.join(element, primitiveName, fileName)
+    iDict = readJsonFile(primitiveJsonFile)
+
+    # we also need to load the source element json file so we can access it's information for inclusion.
+    sourceJsonFile = os.path.abspath(os.path.join("json", eDict["element"],  eDict["element"] + ".json"))
+    sourceDict = readJsonFile(sourceJsonFile)
+
+    pbrtFileObj = os.open(pbrtPrimitiveFile, os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_EX)
+
+    try:
+        f = os.fdopen(pbrtFileObj,'w')
+    except IOError as (errno, strerror):
+        print "Couldn't open %s for write: %s" % (pbrtPrimitiveFile, strerror)
+        return
+
+    f.writelines('<?xml version="1.0"?>\n\n')
+    f.writelines("<!--Converted from %s-->\n\n" % primitiveJsonFile)
+    f.writelines('<scene>\n\n')
+
+    for variant, primitiveDict in iDict.iteritems(): # each variant is the key to a dictionary of instance name/transforms
+        inclFileList = []  # TODO:
+        if variant == "base":
+            instanceRef = os.path.basename(sourceDict["geomObjFile"])[:-4]
+            if "instancedPrimitiveJsonFiles" in sourceDict:
+                for primitiveName, ipDict in sourceDict["instancedPrimitiveJsonFiles"].iteritems():
+                    fileName = os.path.basename(ipDict["jsonFile"])[:-4] + "xml"
+                    inclFileList.append(os.path.join(eDict["element"], primitiveName, fileName))
+
+        elif variant in sourceDict["variants"]:
+            instanceRef = os.path.basename(sourceDict["variants"][variant]["geomObjFile"])[:-4]
+            if "instancedPrimitiveJsonFiles" in sourceDict["variants"][variant]:
+                for primitiveName, ipDict in sourceDict["variants"][variant]["instancedPrimitiveJsonFiles"].iteritems():
+                    fileName = os.path.basename(ipDict["jsonFile"])[:-4] + "xml"
+                    inclFileList.append(os.path.join(eDict["element"], primitiveName, fileName))
+
+        else:
+            print "Error: Problems finding variant %s for element %s\n" %(variant, eDict["element"])
+            sys.exit()
+
+        for instanceName, transform in primitiveDict.iteritems():
+            writeInstance(f, root, instanceRef, instanceName, transform, inclFileList=inclFileList, concat=True)
+
+    f.writelines('</scene>\n\n')
+    os.fsync(pbrtFileObj)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_UN)
+    f.close()
+    os.chmod(pbrtPrimitiveFile, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP | stat.S_IROTH | stat.S_IWOTH)
+    print "Writing primitive archive embree file: ", pbrtPrimitiveFile
+    return shortFileName
+
+
+def writeObject(f, objectName, pbrtGeometryFile, matFile=None):
+    """
+    Create named object definition around single geometry file.
+    :param f:
+    :param objectName: What to call the object
+    :param pbrtGeometryFile: The file being referenced
+    :param matFile: Some variants need a separate matFile, include override for that here.
+    :return:
+    """
+    f.writelines('    <assign type="scene" id="%s">\n' % objectName)
+    f.writelines('        <xml src="../%s"/>\n' % pbrtGeometryFile)
+    f.writelines('    </assign>\n')
+
+def writeInstance(f, root, objectName, instanceName, xfm, inclFileList=[], concat=False):
+    """
+    Create instances of previously named object
+    :param f:
+    :param objectName: Name of object
+    :param instanceName: Name of instance (for reference back to json file)
+    :param transform: Transform
+    :param inclFileList: For primitive files that need to be referenced after object
+    :param concat: Use ConcatTransform to properly inherit final instance position of copies of elements.
+    :return:
+    """
+    f.writelines('<!-- %s -->\n' % instanceName)
+    f.writelines('<Transform>\n')
+    if concat:
+        f.writelines('  <AffineSpace>%f %f %f %f %f %f %f %f %f %f %f %f</AffineSpace>\n' % (xfm[0],xfm[4],xfm[8],xfm[12],xfm[1],xfm[5],xfm[9],xfm[13],xfm[2],xfm[6],xfm[10],xfm[14]) ) 
+    else:
+        f.writelines('  <AffineSpace>%f %f %f %f %f %f %f %f %f %f %f %f</AffineSpace>\n' % (xfm[0],xfm[4],xfm[8],xfm[12],xfm[1],xfm[5],xfm[9],xfm[13],xfm[2],xfm[6],xfm[10],xfm[14]) ) 
+    f.writelines('  <ref id="%s"/>\n' % objectName)
+    for inclFile in inclFileList:
+        f.writelines('  <xml src="' + root + '%s"/>\n' % inclFile)
+    f.writelines('</Transform>\n\n')
+
+
+def writeCurveIndices(f, i, curve, cDict):
+    for j in range(0, len(curve)-1):
+      f.writelines('      %i\n'%i)
+      i = i+1
+    i = i+3
+    return i
+
+def writeCurveVertices(f, curve, cDict):
+    """
+    Updated to work with new pbrt bspline format.
+    :param f:
+    :return:
+    """
+    w0 = cDict["widthRoot"]
+    w1 = cDict["widthTip"]
+    # TODO: Should be change cylinder to flat?
+    # ctype = "cylinder" if cDict["faceCamera"] else "flat"
+
+    i=0
+    f.writelines('      %f %f %f %f\n' % (curve[0][0], curve[0][1], curve[0][2], w0))  # stack
+    for p in curve:
+      x=i/float(len(curve)-1)
+      w=(1-x)*w0 + x*w1
+      f.writelines('      %f %f %f %f\n' % (p[0], p[1], p[2], w))
+      i=i+1
+    f.writelines('      %f %f %f %f\n' % (curve[-1][0], curve[-1][1], curve[-1][2], w1))  # stack
+
+def writeObjectFile(element, pbrtOutGeometry, instCopies = None, primDict = None):
+    """
+    Keep all the object references in a single file to keep the main element file readable. Because we can't embed
+    instances in pbrt, we need to include all references here, both the main element and all primitives or variants
+    it might be referring too.
+    :param element: main element
+    :param pbrtOutGeometry: main element geometry file
+    :param instCopies: if an instanced copy has its own geometry, we need to reference that as well.
+    :param primDict: And all primitives used by the geometry.
+    :return:
+    """
+    # put all the primitive objects at the top of the file since we can embed objects within objects.
+    if not pbrtOutGeometry and not primDict and not instCopies:
+        return ""
+
+    shortName = os.path.join(element, "objects.xml")
+    pbrtOutObjects = os.path.abspath(os.path.join("embree", shortName))
+
+    pbrtFileObj = os.open(pbrtOutObjects, os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_EX)
+
+    try:
+        f = os.fdopen(pbrtFileObj,'w')
+    except IOError as (errno, strerror):
+        print "Couldn't open %s for write: %s" % (pbrtOutObjects, strerror)
+        return
+
+    f.writelines('<?xml version="1.0"?>\n\n')
+    f.writelines('<scene>\n\n')
+    
+    # there are all the archives used by the primitive description
+    if primDict:
+        for primName, primInstanceDict in primDict.iteritems(): # for each xgen description
+            f.writelines("\n<!-- archives used by %s -->\n" % primName)
+            # for each archives used by this description
+            if "archives" in primInstanceDict:
+                for archive in primInstanceDict["archives"]:
+                    # the object reference is the archive or geo file base name
+                    archiveName = os.path.basename(archive)[:-4]
+                    # the object file is the archive or geo file base name + _geometry
+                    pbrtArchiveFile = os.path.join(element, primName, archiveName + "_geometry.xml")
+                    # if this is type 'element', we need to drop in the element's material file #HACKY
+                    matFile = os.path.join(primInstanceDict["element"], "materials.xml")\
+                        if primInstanceDict["type"] == "element" else ""
+                    writeObject(f, archiveName, pbrtArchiveFile, matFile=matFile)
+
+    # This is the main element object
+    if pbrtOutGeometry:
+        f.writelines("\n<!-- main object for the element: %s -->\n" % element)
+        writeObject(f, element, pbrtOutGeometry)
+
+    # Instanced copies here.
+    if instCopies:
+        f.writelines("\n<!-- instanced copies of the element with their own geometry -->\n")
+        for instanceName, icDict in instCopies.iteritems():
+            if "geomObjFile" in icDict and icDict["geomObjFile"]:
+                # convert obj name to pbrt location
+                pbrtOutFile =icDict["geomObjFile"][4:-4] + "_geometry.xml"
+                writeObject(f, icDict["name"], pbrtOutFile)
+
+    f.writelines('</scene>\n\n')
+    os.fsync(pbrtFileObj)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_UN)
+    f.close()
+    os.chmod(pbrtOutObjects, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP | stat.S_IROTH | stat.S_IWOTH)
+    print "Writing XML file: ", pbrtOutObjects
+    return shortName
+
+
+def writeMainElement(pbrtOutElement, pbrtOutMaterials, pbrtOutGeometry, primitiveFiles, sourceJsonFile=""):
+
+    jDict = readJsonFile(sourceJsonFile)
+    element = jDict["name"]
+    transform = jDict["transformMatrix"]
+
+    pbrtFileObj = os.open(pbrtOutElement, os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_EX)
+
+    try:
+        f = os.fdopen(pbrtFileObj,'w')
+    except IOError as (errno, strerror):
+        print "Couldn't open %s for write: %s" % (pbrtOutElement, strerror)
+        return
+
+    f.writelines('<?xml version="1.0"?>\n\n')
+    f.writelines('<scene>\n\n')
+    
+    if sourceJsonFile:
+        f.writelines("<!-- Converted from %s -->\n\n" % sourceJsonFile)
+
+    ################################## Materials
+
+    #f.writelines("AttributeBegin\n\n")
+    f.writelines("<xml src=\"../%s\"/>\n" % pbrtOutMaterials)
+
+    ################################## Objects
+    # Notes about objects: Since pbrt can instance within an instance, only _geometry files should be defined as objects.
+    # For simplicity, lets defines all _geometry files as objects.
+
+    primitiveDict = jDict["instancedPrimitiveJsonFiles"] if "instancedPrimitiveJsonFiles" in jDict else {}
+    instancedCopiesDict = jDict["instancedCopies"] if "instancedCopies" in jDict else {}
+
+    objectsFile = writeObjectFile(element, pbrtOutGeometry, instCopies=instancedCopiesDict, primDict=primitiveDict)
+    if objectsFile:
+        f.writelines("<xml src=\"../%s\"/>\n" % objectsFile)
+
+    ############################ Main elements
+
+    f.writelines("\n<!-- Main element -->\n\n")
+
+    primList = []  # a list of all the primitive names associated with this element, i.e. xgBonsai, xgGrass, xgShells
+    primFileList = []  # a list of the primitive files, i.e. isBayCedarA1/xgBonsai/isBayCedarA1_xgBonsai.xml
+    if primitiveDict:
+        for primName, primInstanceDict in primitiveDict.iteritems():
+            primList.append(primName)
+            primFileList.append(os.path.join(element, primName, element + "_" + primName + ".xml"))
+
+    # create the default instance (we have at least once instance of every element)
+    writeInstance(f, "../", element, element, transform, primFileList)
+
+    if instancedCopiesDict:
+        f.writelines("\n<!-- Instanced copies of main element -->\n\n")
+
+        # all the other instances of the element and all primitive files used by element
+        # Note: we can't instance the primitive files themsevles, because they contain references to instanced archives.
+        for instance, icDict in instancedCopiesDict.iteritems():
+            primOverrides = icDict["instancedPrimitiveJsonFiles"].keys() if "instancedPrimitiveJsonFiles" in icDict else []
+            includedPrimFileList = []
+            for prim in primList: # For each primitive associated with this element,
+                # is the primName the instance or element? Depends on is the instancedCopies instance
+                if prim in primOverrides:
+                    primName = instance + '_' + prim + ".xml"
+                else:
+                    primName = element + '_' + prim + ".xml"
+                includedPrimFileList.append(os.path.join(element, prim, primName)) # isBayCedarA2/xgBonsai/isBayCedarA2_xgBonsai.xml
+            if "geomObjFile" in icDict and icDict["geomObjFile"]:
+                # print "This instance has its own geometry."
+                writeInstance(f, "../", instance, instance, icDict["transformMatrix"], includedPrimFileList)
+            else:
+                writeInstance(f, "../", element, instance, icDict["transformMatrix"], includedPrimFileList)
+
+    #f.writelines("AttributeEnd\n")
+
+    f.writelines('</scene>\n\n')
+    os.fsync(pbrtFileObj)
+    fcntl.flock(pbrtFileObj, fcntl.LOCK_UN)
+    f.close()
+    os.chmod(pbrtOutElement, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP | stat.S_IROTH | stat.S_IWOTH)
+    print "Writing XML file: ", pbrtOutElement
+    return pbrtOutElement
+
+
+def findMaterial(mesh, matDict, hierDict="", quiet=False):
+    """
+    Given a patch, a materials dictionary and an optional hierarchy dictionary, this finds the correct
+    material for that patch.
+    :param mesh: The name of the mesh
+    :param matDict: A dictionary of materials, created from the json materials file.
+    :param hierDict: A dictionary of hierarchy expansions, created from the json .hier file.
+    :param quiet: Suppress the no bindings error message
+    :return: Matching material as string
+    """
+    longNameMesh = hierDict[mesh] + '|' + mesh if mesh in hierDict else mesh
+
+    found = []
+    for k, v in matDict.iteritems():
+        # find an assignment that matches
+        bindings = v['assignment']
+        for binding in bindings:
+            if fnmatch.fnmatchcase(longNameMesh, "*" + binding + "*"):
+                found.append(k)
+    if found:
+        # if there's only one match, we found the binding.
+        if len(found) == 1:
+            return found[0]
+        else:
+            # if one is an exact string match, return that one (or the first
+            # occurrence of an exact string match)
+            for f in found:
+                if mesh in matDict[f]['assignment']:
+                    return f
+            # if there's not an exact string match, go for the match furthest up the hierarchy chain (this will solve
+            # a problem with the bonsai matching for trunks vs branches vs tips.
+            for f in found:
+                print "f"
+            sys.exit()
+            # otherwise, return the last match. #makingshitup
+            return found[-1]
+    else:
+        if not quiet:
+            print "ERROR: Unable to find binding for mesh: ", mesh
+        return ""
+
+
+def insertTextureOverrides(pbrtGeomFile, matFile):
+    """
+    Find a mesh that's using a material with a texture and insert the texture override that includes the specific
+    mesh name. i.e. textures/isGardeniaA/Color/archiveflowerbud0001_geo.ptx
+    :param pbrtGeomFile: The pbrt geometry file created with obj2pbrt
+    :param matFile: The json material file
+    :param hierFile: The file containing the full hierarchy of the meshes (stripped out to create the obj files)
+    :return: None
+    """
+    COMMENT = "# Inserted materials directly above Shape for custom texture per mesh. v2.\n"
+    handle, tempPbrtFile = tempfile.mkstemp(prefix='IS', suffix='.xml', dir=TMPDIR)
+    tof = open(tempPbrtFile,"w")
+    print "Inserting pbrt materials into: ", tempPbrtFile
+
+    # Create a sub-dictionary of just the materials with textures.
+    mDict = readJsonFile(matFile) # keys are primitive description name, i.e. xgGrass.
+    textureMats = [key for key in mDict if "colorMap" in mDict[key] and mDict[key]["colorMap"]] # keys with materials
+    matDict = {mat: mDict[mat] for mat in textureMats}
+
+    # warning. these can be big files!
+    with open(os.path.abspath(pbrtGeomFile), "r") as pgf:
+        tof.write(COMMENT)
+        meshName = ""
+        colorName = ""
+        dispName = ""
+        colorMap = ""
+        dispMap = ""
+        material = ""
+        for line in pgf.xreadlines():  # use generator
+            if line.startswith(COMMENT[:20]):
+                # Don't duplicate the comment.
+                continue
+
+            if line.startswith("# Name"):
+                m = re.search('# Name "(.+?)"$', line)
+                if not m:
+                    tof.write(line)
+                    continue
+                meshName = m.group(1)
+                tof.write(line)
+                continue
+
+            if line.startswith("NamedMaterial"):
+                m = re.search('^NamedMaterial "(.+?)"$', line)
+                if not m:
+                    tof.write(line)
+                    continue
+                material = m.group(1)
+                if material not in matDict:
+                    material = ""
+                    tof.write(line)
+                    continue
+                colorMap = matDict[material]["colorMap"] if "colorMap" in matDict[material] else ""
+                dispMap = matDict[material]["displacementMap"]if "displacementMap" in matDict[material] else ""
+                if colorMap:
+                    colorName = material + "_Color"
+                    texPath = os.path.join("..", os.path.dirname(colorMap),meshName + ".ptx")
+                    tof.write('Texture "%s" "color" "ptex"\n' % colorName)
+                    tof.write('         "string filename" ["%s"]\n\n'%texPath)
+                if dispMap:
+                    dispName = material + "_Disp"
+                    texPath = os.path.join("..", os.path.dirname(dispMap),meshName + ".ptx")
+                    tof.write('Texture "%s" "float" "ptex"\n' % dispName)
+                    tof.write('         "string filename" ["%s"]\n\n'%texPath)
+                # write back the original NamedMaterial line
+                tof.write(line)
+                continue
+
+            if line.startswith("Shape") and meshName and material:
+                tof.write(line)
+                m = re.search('^Shape "trianglemesh"$', line)
+                if not m: continue
+                if colorMap:
+                    tof.write('  "texture color" "%s"\n' % colorName)
+                    colorMap = ""
+                if dispMap:
+                    tof.write('  "texture bumpmap" "%s"\n' % dispName)
+                    dispMap = ""
+                continue
+
+            # everything else just goes into the tempfile
+            tof.write(line)
+
+    tof.close()
+
+    # copy temp file over old one
+    print "Replacing ", pbrtGeomFile
+    shutil.copy2(tempPbrtFile, os.path.abspath(pbrtGeomFile))

vae/Irand/island/textures/isPalmDead/Color/rootball0001_geo.ptx

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vae/Irand/island/textures/isPalmDead/Displacement/rootball0001_geo.ptx

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