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GLTFLoader: Revert usage of computeTangents(). #21186

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Feb 3, 2021
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GLTFLoader: Revert usage of computeTangents(). #21186

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15 changes: 0 additions & 15 deletions examples/js/loaders/GLTFLoader.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3243,21 +3243,6 @@ THREE.GLTFLoader = ( function () {
? new THREE.SkinnedMesh( geometry, material )
: new THREE.Mesh( geometry, material );

// Fix double sided rendered models on certain mobile devices, see https://github.com/mrdoob/three.js/issues/20997#issuecomment-756082184

if ( material.isMeshStandardMaterial === true &&
material.side === THREE.DoubleSide &&
geometry.getIndex() !== null &&
geometry.hasAttribute( 'position' ) === true &&
geometry.hasAttribute( 'normal' ) === true &&
geometry.hasAttribute( 'uv' ) === true &&
geometry.hasAttribute( 'tangent' ) === false ) {

geometry.computeTangents();
material.vertexTangents = true;

}

if ( mesh.isSkinnedMesh === true && ! mesh.geometry.attributes.skinWeight.normalized ) {

// we normalize floating point skin weight array to fix malformed assets (see #15319)
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15 changes: 0 additions & 15 deletions examples/jsm/loaders/GLTFLoader.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3308,21 +3308,6 @@ var GLTFLoader = ( function () {
? new SkinnedMesh( geometry, material )
: new Mesh( geometry, material );

// Fix double sided rendered models on certain mobile devices, see https://github.com/mrdoob/three.js/issues/20997#issuecomment-756082184

if ( material.isMeshStandardMaterial === true &&
material.side === DoubleSide &&
geometry.getIndex() !== null &&
geometry.hasAttribute( 'position' ) === true &&
geometry.hasAttribute( 'normal' ) === true &&
geometry.hasAttribute( 'uv' ) === true &&
geometry.hasAttribute( 'tangent' ) === false ) {

geometry.computeTangents();
material.vertexTangents = true;

}

if ( mesh.isSkinnedMesh === true && ! mesh.geometry.attributes.skinWeight.normalized ) {

// we normalize floating point skin weight array to fix malformed assets (see #15319)
Expand Down