Merge pull request #17923 from zeux/mesh-quantization

Implement support for KHR_mesh_quantization

docs/examples/en/loaders/GLTFLoader.html

@@ -32,6 +32,7 @@
 			<li>KHR_draco_mesh_compression</li>
 			<li>KHR_materials_pbrSpecularGlossiness</li>
 			<li>KHR_materials_unlit</li>
+			<li>KHR_mesh_quantization</li>
 			<li>KHR_lights_punctual<sup>1</sup></li>
 			<li>KHR_texture_transform<sup>2</sup></li>
 			<li>MSFT_texture_dds</li>

docs/examples/zh/loaders/GLTFLoader.html

@@ -30,6 +30,7 @@
 			<li>KHR_draco_mesh_compression</li>
 			<li>KHR_materials_pbrSpecularGlossiness</li>
 			<li>KHR_materials_unlit</li>
+			<li>KHR_mesh_quantization</li>
 			<li>KHR_lights_punctual<sup>1</sup></li>
 			<li>KHR_texture_transform<sup>2</sup></li>
 			<li>MSFT_texture_dds</li>

examples/js/loaders/GLTFLoader.js

@@ -188,6 +188,10 @@ THREE.GLTFLoader = ( function () {
 							extensions[ extensionName ] = new GLTFTextureTransformExtension();
 							break;
 
+						case EXTENSIONS.KHR_MESH_QUANTIZATION:
+							extensions[ extensionName ] = new GLTFMeshQuantizationExtension();
+							break;
+
 						default:
 
 							if ( extensionsRequired.indexOf( extensionName ) >= 0 ) {
@@ -263,6 +267,7 @@ THREE.GLTFLoader = ( function () {
 		KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS: 'KHR_materials_pbrSpecularGlossiness',
 		KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
 		KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
+		KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
 		MSFT_TEXTURE_DDS: 'MSFT_texture_dds'
 	};
 
@@ -981,6 +986,17 @@ THREE.GLTFLoader = ( function () {
 
 	}
 
+	/**
+	 * Mesh Quantization Extension
+	 *
+	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization
+	 */
+	function GLTFMeshQuantizationExtension() {
+
+		this.name = EXTENSIONS.KHR_MESH_QUANTIZATION;
+
+	}
+
 	/*********************************/
 	/********** INTERPOLATION ********/
 	/*********************************/

examples/jsm/loaders/GLTFLoader.js

@@ -252,6 +252,10 @@ var GLTFLoader = ( function () {
 							extensions[ extensionName ] = new GLTFTextureTransformExtension();
 							break;
 
+						case EXTENSIONS.KHR_MESH_QUANTIZATION:
+							extensions[ extensionName ] = new GLTFMeshQuantizationExtension();
+							break;
+
 						default:
 
 							if ( extensionsRequired.indexOf( extensionName ) >= 0 ) {
@@ -327,6 +331,7 @@ var GLTFLoader = ( function () {
 		KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS: 'KHR_materials_pbrSpecularGlossiness',
 		KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
 		KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
+		KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
 		MSFT_TEXTURE_DDS: 'MSFT_texture_dds'
 	};
 
@@ -1045,6 +1050,17 @@ var GLTFLoader = ( function () {
 
 	}
 
+	/**
+	 * Mesh Quantization Extension
+	 *
+	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization
+	 */
+	function GLTFMeshQuantizationExtension() {
+
+		this.name = EXTENSIONS.KHR_MESH_QUANTIZATION;
+
+	}
+
 	/*********************************/
 	/********** INTERPOLATION ********/
 	/*********************************/