Merge pull request #79 from KhronosGroup/DiffuseTransmissionPlant

DiffuseTransmissionPlant

Models/DiffuseTransmissionPlant/README.body.md

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+## Screenshot
+
+![Screenshot from UX3D glTF Sample Viewer](screenshot/screenshot_Large.jpg)
+<br/>_Screenshot from [UX3D glTF Sample Viewer](http://gltf.ux3d.io/) with the environment Wide Street, and environment rotation set to -X._
+
+## Description
+
+This asset demonstrates the use of KHR_materials_diffuse_transmission to represent thin-surface light transmission of green plant leaves with red backscatter. 

Models/DiffuseTransmissionPlant/glTF/DiffuseTransmissionPlant.gltf

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+{
+  "asset": {
+    "generator": "glTF-Transform v$npm_package_version",
+    "copyright": "CC0, model sourced from https://polyhaven.com/a/potted_plant_02",
+    "version": "2.0"
+  },
+  "extensionsUsed": [
+    "KHR_materials_diffuse_transmission"
+  ],
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+  ],
+  "samplers": [
+    {
+      "magFilter": 9729,
+      "minFilter": 9987,
+      "wrapS": 10497,
+      "wrapT": 10497
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+  ],
+  "textures": [
+    {
+      "source": 1,
+      "sampler": 0
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+    {
+      "source": 0,
+      "sampler": 0
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+    {
+      "source": 2,
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+    {
+      "source": 4,
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+    {
+      "source": 3,
+      "sampler": 0
+    },
+    {
+      "source": 5,
+      "sampler": 0
+    }
+  ],
+  "images": [
+    {
+      "name": "potted_plant_02_pot_nor_gl",
+      "uri": "potted_plant_1k_img0.jpg"
+    },
+    {
+      "name": "potted_plant_02_pot_diff",
+      "uri": "potted_plant_1k_img1.jpg"
+    },
+    {
+      "name": "potted_plant_02_pot_rough",
+      "uri": "potted_plant_1k_img2.jpg"
+    },
+    {
+      "name": "potted_plant_02_leaves_nor_gl",
+      "uri": "potted_plant_1k_img3.jpg"
+    },
+    {
+      "name": "potted_plant_02_leaves_diff",
+      "uri": "potted_plant_1k_img4.png"
+    },
+    {
+      "name": "potted_plant_02_leaves_rough",
+      "uri": "potted_plant_1k_img5.jpg"
+    }
+  ],
+  "buffers": [
+    {
+      "uri": "DiffuseTransmissionPlant.bin",
+      "byteLength": 1852244
+    }
+  ],
+  "materials": [
+    {
+      "name": "potted_plant_02_pot",
+      "pbrMetallicRoughness": {
+        "metallicFactor": 0,
+        "baseColorTexture": {
+          "index": 0
+        },
+        "metallicRoughnessTexture": {
+          "index": 2
+        }
+      },
+      "normalTexture": {
+        "index": 1
+      }
+    },
+    {
+      "name": "potted_plant_02_leaves",
+      "alphaMode": "MASK",
+      "alphaCutoff": 0.5,
+      "doubleSided": true,
+      "pbrMetallicRoughness": {
+        "metallicFactor": 0,
+        "baseColorTexture": {
+          "index": 3
+        },
+        "metallicRoughnessTexture": {
+          "index": 5
+        }
+      },
+      "normalTexture": {
+        "index": 4,
+        "scale": 1
+      },
+      "extensions": {
+        "KHR_materials_diffuse_transmission": {
+          "diffuseTransmissionFactor": 0.4,
+          "diffuseTransmissionColorFactor": [
+            1,
+            0,
+            0
+          ]
+        }
+      }
+    }
+  ],
+  "meshes": [
+    {
+      "name": "Circle",
+      "primitives": [
+        {
+          "attributes": {
+            "POSITION": 0,
+            "NORMAL": 1,
+            "TEXCOORD_0": 2
+          },
+          "mode": 4,
+          "material": 0,
+          "indices": 9
+        }
+      ]
+    },
+    {
+      "name": "Circle.001",
+      "primitives": [
+        {
+          "attributes": {
+            "POSITION": 3,
+            "NORMAL": 4,
+            "TEXCOORD_0": 5
+          },
+          "mode": 4,
+          "material": 1,
+          "indices": 10
+        }
+      ]
+    },
+    {
+      "name": "low.008",
+      "primitives": [
+        {
+          "attributes": {
+            "POSITION": 6,
+            "NORMAL": 7,
+            "TEXCOORD_0": 8
+          },
+          "mode": 4,
+          "material": 0,
+          "indices": 11
+        }
+      ]
+    }
+  ],
+  "nodes": [
+    {
+      "name": "potted_plant_02_pot",
+      "mesh": 0
+    },
+    {
+      "name": "potted_plant_02_leaves",
+      "translation": [
+        -0.0029038283973932266,
+        0.30528968572616577,
+        0.0006859108689241111
+      ],
+      "mesh": 1
+    },
+    {
+      "name": "potted_plant_02_dirt",
+      "translation": [
+        -0.12862031161785126,
+        0.31752803921699524,
+        -0.13355804979801178
+      ],
+      "mesh": 2
+    }
+  ],
+  "scenes": [
+    {
+      "name": "Scene",
+      "nodes": [
+        0,
+        1,
+        2
+      ]
+    }
+  ],
+  "scene": 0
+}

Models/DiffuseTransmissionPlant/metadata.json

@@ -0,0 +1,25 @@
+{
+    "version": 2,
+    "legal": [
+        {
+            "license": "CC0",
+            "licenseUrl": "https://creativecommons.org/share-your-work/public-domain/cc0",
+            "artist": "Polyhaven.com",
+            "year": "2023",
+            "owner": "Public domain",
+            "what": "Everything",
+            "text": "CC0 No Rights Reserved",
+            "spdx": "CC0",
+            "icon": "https://licensebuttons.net/p/zero/1.0/88x31.png"
+        }
+    ],
+    "tags": [
+        "showcase",
+        "extension"
+    ],
+    "screenshot": "screenshot/screenshot.jpg",
+    "name": "DiffuseTransmissionPlant",
+    "path": "./Models/DiffuseTransmissionPlant",
+    "summary": "Potted plant asset using Diffuse Transmission extension.",
+    "createReadme": true
+}