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diff --git a/Geometry/boombox.glb b/Geometry/boombox.glb
diff --git a/Geometry/chess_set.glb b/Geometry/chess_set.glb
diff --git a/Geometry/shaderball.glb b/Geometry/shaderball.glb
diff --git a/Images/brass_color.jpg b/Images/brass_color.jpg
diff --git a/Images/brass_roughness.jpg b/Images/brass_roughness.jpg
diff --git a/Images/brick_base_gray.jpg b/Images/brick_base_gray.jpg
diff --git a/Images/brick_dirt_mask.jpg b/Images/brick_dirt_mask.jpg
diff --git a/Images/brick_mask.jpg b/Images/brick_mask.jpg
diff --git a/Images/brick_normal.jpg b/Images/brick_normal.jpg
diff --git a/Images/brick_roughness.jpg b/Images/brick_roughness.jpg
diff --git a/Images/brick_variation_mask.jpg b/Images/brick_variation_mask.jpg
diff --git a/Images/cloth.bmp b/Images/cloth.bmp
diff --git a/Images/cloth.gif b/Images/cloth.gif
diff --git a/Images/cloth.jpg b/Images/cloth.jpg
diff --git a/Images/cloth.png b/Images/cloth.png
diff --git a/Images/cloth.tga b/Images/cloth.tga
diff --git a/Images/greysphere_calibration.png b/Images/greysphere_calibration.png
diff --git a/Images/grid.png b/Images/grid.png
diff --git a/Images/marble.png b/Images/marble.png
diff --git a/Images/mesh_wire_norm.png b/Images/mesh_wire_norm.png
diff --git a/Images/plain_heightmap.png b/Images/plain_heightmap.png
diff --git a/Images/wood_color.jpg b/Images/wood_color.jpg
diff --git a/Images/wood_roughness.jpg b/Images/wood_roughness.jpg
diff --git a/JsMaterialXCore.js b/JsMaterialXCore.js
diff --git a/JsMaterialXCore.wasm b/JsMaterialXCore.wasm
diff --git a/JsMaterialXGenShader.data b/JsMaterialXGenShader.data
diff --git a/JsMaterialXGenShader.js b/JsMaterialXGenShader.js
diff --git a/JsMaterialXGenShader.wasm b/JsMaterialXGenShader.wasm
diff --git a/Lights/environment_map.mtlx b/Lights/environment_map.mtlx
@@ -0,0 +1,60 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+
+  <nodegraph name="envMap">
+
+    <!-- Get view direction -->
+    <viewdirection name="viewDir" type="vector3" />
+
+    <!-- Compute longitude coordinate -->
+    <separate3 name="viewDirChannels" type="multioutput">
+      <input name="in" type="vector3" nodename="viewDir" />
+    </separate3>
+    <atan2 name="angleXZ" type="float">
+      <input name="iny" type="float" nodename="viewDirChannels" output="outx" />
+      <input name="inx" type="float" nodename="viewDirChannels" output="outz" />
+    </atan2>
+    <multiply name="scaleXZ" type="float">
+      <input name="in1" type="float" nodename="angleXZ" />
+      <input name="in2" type="float" value="-0.15915494" />
+    </multiply>
+    <add name="longitude" type="float">
+      <input name="in1" type="float" nodename="scaleXZ" />
+      <input name="in2" type="float" value="0.5" />
+    </add>
+
+    <!-- Compute latitude coordinate -->
+    <asin name="angleY" type="float">
+      <input name="in" type="float" nodename="viewDirChannels" output="outy" />
+    </asin>
+    <multiply name="scaleY" type="float">
+      <input name="in1" type="float" nodename="angleY" />
+      <input name="in2" type="float" value="0.31830989" />
+    </multiply>
+    <add name="latitude" type="float">
+      <input name="in1" type="float" nodename="scaleY" />
+      <input name="in2" type="float" value="0.5" />
+    </add>
+
+    <!-- Sample the latitude-longitude map -->
+    <combine2 name="mapUvs" type="vector2">
+      <input name="in1" type="float" nodename="longitude" />
+      <input name="in2" type="float" nodename="latitude" />
+    </combine2>
+    <image name="envImage" type="color3">
+      <input name="file" type="filename" value="resources/Lights/san_giuseppe_bridge.hdr" />
+      <input name="texcoord" type="vector2" nodename="mapUvs" />
+      <input name="uaddressmode" type="string" value="periodic" />
+      <input name="vaddressmode" type="string" value="clamp" />
+      <input name="filtertype" type="string" value="linear" />
+    </image>
+
+    <multiply name="envImageAdjusted" type="color3">
+      <input name="in1" type="color3" nodename="envImage" />
+      <input name="in2" type="float" value="1.0" />
+    </multiply>
+
+    <!-- Return the resulting color -->
+    <output name="out" type="color3" nodename="envImageAdjusted" />
+  </nodegraph>
+</materialx>
diff --git a/Lights/goegap.hdr b/Lights/goegap.hdr
diff --git a/Lights/goegap_split.hdr b/Lights/goegap_split.hdr
diff --git a/Lights/goegap_split.mtlx b/Lights/goegap_split.mtlx
@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<materialx version="1.39">
+  <directional_light name="dir_light" type="lightshader">
+    <input name="direction" type="vector3" value="0.43277, -0.725547, -0.535062" />
+    <input name="color" type="color3" value="0.993688, 1, 0.993529" />
+    <input name="intensity" type="float" value="5.93724" />
+  </directional_light>
+</materialx>
diff --git a/Lights/irradiance/goegap.hdr b/Lights/irradiance/goegap.hdr
diff --git a/Lights/irradiance/goegap_split.hdr b/Lights/irradiance/goegap_split.hdr
diff --git a/Lights/irradiance/san_giuseppe_bridge.hdr b/Lights/irradiance/san_giuseppe_bridge.hdr
diff --git a/Lights/irradiance/san_giuseppe_bridge_split.hdr b/Lights/irradiance/san_giuseppe_bridge_split.hdr
diff --git a/Lights/irradiance/table_mountain.hdr b/Lights/irradiance/table_mountain.hdr
diff --git a/Lights/irradiance/table_mountain_split.hdr b/Lights/irradiance/table_mountain_split.hdr
diff --git a/Lights/san_giuseppe_bridge.hdr b/Lights/san_giuseppe_bridge.hdr
diff --git a/Lights/san_giuseppe_bridge_split.hdr b/Lights/san_giuseppe_bridge_split.hdr
diff --git a/Lights/san_giuseppe_bridge_split.mtlx b/Lights/san_giuseppe_bridge_split.mtlx
@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<materialx version="1.39">
+  <directional_light name="dir_light" type="lightshader">
+    <input name="direction" type="vector3" value="0.514434, -0.479014, -0.711269" />
+    <input name="color" type="color3" value="1, 0.894474, 0.567234" />
+    <input name="intensity" type="float" value="2.52776" />
+  </directional_light>
+</materialx>
diff --git a/Lights/table_mountain.hdr b/Lights/table_mountain.hdr
diff --git a/Lights/table_mountain_split.hdr b/Lights/table_mountain_split.hdr
diff --git a/Lights/table_mountain_split.mtlx b/Lights/table_mountain_split.mtlx
@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<materialx version="1.39">
+  <directional_light name="dir_light" type="lightshader">
+    <input name="direction" type="vector3" value="0.757663, -0.126589, -0.640251" />
+    <input name="color" type="color3" value="1, 0.844753, 0.418417" />
+    <input name="intensity" type="float" value="4.19121" />
+  </directional_light>
+</materialx>
diff --git a/Materials/Examples/GltfPbr/boombox/BoomBox_baseColor.png b/Materials/Examples/GltfPbr/boombox/BoomBox_baseColor.png
diff --git a/Materials/Examples/GltfPbr/boombox/BoomBox_emissive.png b/Materials/Examples/GltfPbr/boombox/BoomBox_emissive.png
diff --git a/Materials/Examples/GltfPbr/boombox/BoomBox_normal.png b/Materials/Examples/GltfPbr/boombox/BoomBox_normal.png
diff --git a/Materials/Examples/GltfPbr/boombox/BoomBox_occlusionRoughnessMetallic.png b/Materials/Examples/GltfPbr/boombox/BoomBox_occlusionRoughnessMetallic.png
diff --git a/Materials/Examples/GltfPbr/gltf_pbr_boombox.mtlx b/Materials/Examples/GltfPbr/gltf_pbr_boombox.mtlx
@@ -0,0 +1,30 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709" fileprefix="boombox/">
+  <gltf_colorimage name="image_basecolor" type="multioutput">
+    <input name="file" type="filename" value="BoomBox_baseColor.png" colorspace="srgb_texture" />
+  </gltf_colorimage>
+  <gltf_image name="image_orm" type="vector3">
+    <input name="file" type="filename" value="BoomBox_occlusionRoughnessMetallic.png" />
+  </gltf_image>
+  <gltf_normalmap name="image_normal" type="vector3">
+    <input name="file" type="filename" value="BoomBox_normal.png" />
+  </gltf_normalmap>
+  <gltf_image name="image_emission" type="color3">
+    <input name="file" type="filename" value="BoomBox_emissive.png" colorspace="srgb_texture" />
+  </gltf_image>
+  <separate3 name="image_orm_channels" type="multioutput">
+    <input name="in" type="vector3" nodename="image_orm" />
+  </separate3>
+  <gltf_pbr name="SR_boombox" type="surfaceshader">
+    <input name="base_color" type="color3" nodename="image_basecolor" output="outcolor" />
+    <input name="alpha" type="float" nodename="image_basecolor" output="outa" />
+    <input name="metallic" type="float" nodename="image_orm_channels" output="outz" />
+    <input name="roughness" type="float" nodename="image_orm_channels" output="outy" />
+    <input name="occlusion" type="float" nodename="image_orm_channels" output="outx" />
+    <input name="normal" type="vector3" nodename="image_normal" />
+    <input name="emissive" type="color3" nodename="image_emission" />
+  </gltf_pbr>
+  <surfacematerial name="Material_boombox" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="SR_boombox" />
+  </surfacematerial>
+</materialx>
diff --git a/Materials/Examples/GltfPbr/gltf_pbr_carpaint.mtlx b/Materials/Examples/GltfPbr/gltf_pbr_carpaint.mtlx
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <gltf_pbr name="SR_carpaint" type="surfaceshader">
+    <input name="base_color" type="color3" value="0.0518895, 0.29606, 0.425324" />
+    <input name="metallic" type="float" value="0" />
+    <input name="roughness" type="float" value="0.4" />
+    <input name="clearcoat" type="float" value="1" />
+  </gltf_pbr>
+  <surfacematerial name="PBR_Car_Paint" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="SR_carpaint" />
+  </surfacematerial>
+</materialx>
diff --git a/Materials/Examples/GltfPbr/gltf_pbr_default.mtlx b/Materials/Examples/GltfPbr/gltf_pbr_default.mtlx
@@ -0,0 +1,33 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <gltf_pbr name="SR_default" type="surfaceshader">
+    <input name="base_color" type="color3" value="1.0, 1.0, 1.0" />
+    <input name="metallic" type="float" value="1" />
+    <input name="roughness" type="float" value="1" />
+    <input name="normal" type="vector3" value="0, 0, 1" />
+    <input name="occlusion" type="float" value="0" />
+    <input name="transmission" type="float" value="0" />
+    <input name="specular" type="float" value="1" />
+    <input name="specular_color" type="color3" value="1, 1, 1" />
+    <input name="ior" type="float" value="1.5" />
+    <input name="alpha" type="float" value="1" />
+    <input name="alpha_mode" type="integer" value="0" />
+    <input name="alpha_cutoff" type="float" value="0.5" />
+    <input name="iridescence" type="float" value="0" />
+    <input name="iridescence_ior" type="float" value="1.3" />
+    <input name="iridescence_thickness" type="float" value="300" />
+    <input name="sheen_color" type="color3" value="0, 0, 0" />
+    <input name="sheen_roughness" type="float" value="0" />
+    <input name="clearcoat" type="float" value="0" />
+    <input name="clearcoat_roughness" type="float" value="0" />
+    <input name="clearcoat_normal" type="vector3" value="0, 0, 1" />
+    <input name="emissive" type="color3" value="0, 0, 0" />
+    <input name="emissive_strength" type="float" value="1" />
+    <input name="thickness" type="float" value="0" />
+    <input name="attenuation_distance" type="float" value="100000" />
+    <input name="attenuation_color" type="color3" value="0, 0, 0" />
+  </gltf_pbr>
+  <surfacematerial name="Default" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="SR_default" />
+  </surfacematerial>
+</materialx>
diff --git a/Materials/Examples/GltfPbr/gltf_pbr_glass.mtlx b/Materials/Examples/GltfPbr/gltf_pbr_glass.mtlx
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <gltf_pbr name="SR_glass" type="surfaceshader">
+    <input name="metallic" type="float" value="0" />
+    <input name="roughness" type="float" value="0.01" />
+    <input name="transmission" type="float" value="1" />
+    <input name="ior" type="float" value="1.52" />
+  </gltf_pbr>
+  <surfacematerial name="PBR_Glass" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="SR_glass" />
+  </surfacematerial>
+</materialx>
diff --git a/Materials/Examples/GltfPbr/gltf_pbr_gold.mtlx b/Materials/Examples/GltfPbr/gltf_pbr_gold.mtlx
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <gltf_pbr name="SR_gold" type="surfaceshader">
+    <input name="base_color" type="color3" value="0.944, 0.776, 0.373" />
+    <input name="roughness" type="float" value="0.02" />
+  </gltf_pbr>
+  <surfacematerial name="PBR_Gold" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="SR_gold" />
+  </surfacematerial>
+</materialx>
diff --git a/Materials/Examples/GltfPbr/gltf_pbr_plastic.mtlx b/Materials/Examples/GltfPbr/gltf_pbr_plastic.mtlx
@@ -0,0 +1,11 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <gltf_pbr name="SR_plastic" type="surfaceshader">
+    <input name="base_color" type="color3" value="0.104704, 0.241883, 0.818" />
+    <input name="metallic" type="float" value="0" />
+    <input name="roughness" type="float" value="0.324675" />
+  </gltf_pbr>
+  <surfacematerial name="PBR_Plastic" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="SR_plastic" />
+  </surfacematerial>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_aluminum_brushed.mtlx b/Materials/Examples/OpenPbr/open_pbr_aluminum_brushed.mtlx
@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Aluminum_Brushed" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="base_color" type="color3" value="0.912, 0.914, 0.920" />
+    <input name="base_metalness" type="float" value="1.0" />
+    <input name="specular_color" type="color3" value="0.970, 0.979, 0.988" />
+    <input name="specular_roughness" type="float" value="0.2" />
+    <input name="specular_roughness_anisotropy" type="float" value="0.9" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_carpaint.mtlx b/Materials/Examples/OpenPbr/open_pbr_carpaint.mtlx
@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Car_Paint" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="base_color" type="color3" value="0.1, 0.6, 0.9" />
+    <input name="specular_ior" type="float" value="1.6" />
+    <input name="specular_roughness" type="float" value="0.3" />
+    <input name="coat_weight" type="float" value="1" />
+    <input name="coat_roughness" type="float" value="0.02" />
+    <input name="coat_ior" type="float" value="1.6" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_default.mtlx b/Materials/Examples/OpenPbr/open_pbr_default.mtlx
@@ -0,0 +1,46 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Default" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+    <input name="displacementshader" type="displacementshader" value="" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="base_weight" type="float" value="1.0" />
+    <input name="base_color" type="color3" value="0.8, 0.8, 0.8" />
+    <input name="base_diffuse_roughness" type="float" value="0.0" />
+    <input name="base_metalness" type="float" value="0.0" />
+    <input name="specular_weight" type="float" value="1.0" />
+    <input name="specular_color" type="color3" value="1, 1, 1" />
+    <input name="specular_roughness" type="float" value="0.3" />
+    <input name="specular_ior" type="float" value="1.5" />
+    <input name="specular_roughness_anisotropy" type="float" value="0.0" />
+    <input name="transmission_weight" type="float" value="0.0" />
+    <input name="transmission_color" type="color3" value="1, 1, 1" />
+    <input name="transmission_depth" type="float" value="0.0" />
+    <input name="transmission_scatter" type="color3" value="0, 0, 0" />
+    <input name="transmission_scatter_anisotropy" type="float" value="0.0" />
+    <input name="transmission_dispersion_scale" type="float" value="0.0" />
+    <input name="transmission_dispersion_abbe_number" type="float" value="20.0" />
+    <input name="subsurface_weight" type="float" value="0" />
+    <input name="subsurface_color" type="color3" value="0.8, 0.8, 0.8" />
+    <input name="subsurface_radius" type="float" value="1.0" />
+    <input name="subsurface_radius_scale" type="color3" value="1.0, 0.5, 0.25" />
+    <input name="subsurface_scatter_anisotropy" type="float" value="0.0" />
+    <input name="fuzz_weight" type="float" value="0.0" />
+    <input name="fuzz_color" type="color3" value="1, 1, 1" />
+    <input name="fuzz_roughness" type="float" value="0.5" />
+    <input name="coat_weight" type="float" value="0.0" />
+    <input name="coat_color" type="color3" value="1, 1, 1" />
+    <input name="coat_roughness" type="float" value="0.0" />
+    <input name="coat_roughness_anisotropy" type="float" value="0.0" />
+    <input name="coat_ior" type="float" value="1.6" />
+    <input name="coat_darkening" type="float" value="1.0" />
+    <input name="thin_film_weight" type="float" value="0" />
+    <input name="thin_film_thickness" type="float" value="0.5" />
+    <input name="thin_film_ior" type="float" value="1.4" />
+    <input name="emission_luminance" type="float" value="0.0" />
+    <input name="emission_color" type="color3" value="1, 1, 1" />
+    <input name="geometry_opacity" type="float" value="1" />
+    <input name="geometry_thin_walled" type="boolean" value="false" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_glass.mtlx b/Materials/Examples/OpenPbr/open_pbr_glass.mtlx
@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Glass" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="specular_roughness" type="float" value="0.0" />
+    <input name="specular_ior" type="float" value="1.52" />
+    <input name="transmission_weight" type="float" value="1.0" />
+    <input name="transmission_dispersion_abbe_number" type="float" value="64" />
+    <input name="transmission_dispersion_scale" type="float" value="1.0" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_honey.mtlx b/Materials/Examples/OpenPbr/open_pbr_honey.mtlx
@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Honey" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="specular_roughness" type="float" value="0.0" />
+    <input name="specular_ior" type="float" value="1.504" />
+    <input name="transmission_weight" type="float" value="1.0" />
+    <input name="transmission_color" type="color3" value="0.83, 0.4, 0.04" />
+    <input name="transmission_depth" type="float" value="2" />
+    <input name="transmission_scatter" type="color3" value="0.9, 0.9, 0.9" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_ketchup.mtlx b/Materials/Examples/OpenPbr/open_pbr_ketchup.mtlx
@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Ketchup" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="base_color" type="color3" value="0.164, 0.006, 0.002" />
+    <input name="specular_roughness" type="float" value="0" />
+    <input name="specular_ior" type="float" value="1.3" />
+    <input name="subsurface_weight" type="float" value="1.0" />
+    <input name="subsurface_color" type="color3" value="0.164, 0.006, 0.002" />
+    <input name="subsurface_radius_scale" type="color3" value="0.476, 0.058, 0.039" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_lightbulb.mtlx b/Materials/Examples/OpenPbr/open_pbr_lightbulb.mtlx
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Light_Bulb" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="emission_color" type="color3" value="1.000, 0.415, 0.099" />
+    <input name="emission_luminance" type="float" value="10000" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_pearl.mtlx b/Materials/Examples/OpenPbr/open_pbr_pearl.mtlx
@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Pearl" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="base_color" type="color3" value="0.8, 0.75, 0.7" />
+    <input name="specular_roughness" type="float" value="0.35" />
+    <input name="specular_ior" type="float" value="1.5" />
+    <input name="subsurface_weight" type="float" value="1.0" />
+    <input name="subsurface_color" type="color3" value="0.8, 0.75, 0.7" />
+    <input name="subsurface_radius_scale" type="color3" value="0.3, 0.5, 0.3" />
+    <input name="coat_weight" type="float" value="1" />
+    <input name="coat_roughness" type="float" value="0.15" />
+    <input name="coat_ior" type="float" value="1.68" />
+    <input name="thin_film_weight" type="float" value="1.0" />
+    <input name="thin_film_thickness" type="float" value="0.420" />
+    <input name="thin_film_ior" type="float" value="2" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_soapbubble.mtlx b/Materials/Examples/OpenPbr/open_pbr_soapbubble.mtlx
@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Soap_Bubble" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="specular_roughness" type="float" value="0" />
+    <input name="specular_ior" type="float" value="1.0" />
+    <input name="transmission_weight" type="float" value="1.0" />
+    <input name="thin_film_weight" type="float" value="1.0" />
+    <input name="thin_film_thickness" type="float" value="0.5" />
+    <input name="thin_film_ior" type="float" value="1.4" />
+    <input name="geometry_thin_walled" type="boolean" value="true" />
+  </open_pbr_surface>
+</materialx>
diff --git a/Materials/Examples/OpenPbr/open_pbr_velvet.mtlx b/Materials/Examples/OpenPbr/open_pbr_velvet.mtlx
@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<materialx version="1.39" colorspace="lin_rec709">
+  <surfacematerial name="Velvet" type="material">
+    <input name="surfaceshader" type="surfaceshader" nodename="open_pbr_surface_surfaceshader" />
+  </surfacematerial>
+  <open_pbr_surface name="open_pbr_surface_surfaceshader" type="surfaceshader">
+    <input name="base_color" type="color3" value="0.02, 0.02, 0.02" />
+    <input name="specular_roughness" type="float" value="0.8" />
+    <input name="fuzz_weight" type="float" value="1" />
+    <input name="fuzz_color" type="color3" value="0.4, 0.4, 0.4" />
+    <input name="fuzz_roughness" type="float" value="0.5" />
+  </open_pbr_surface>
+</materialx>