ShaderMaterial: Fix copy method to include missing properties #32219
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The copy method was missing several properties that are defined in the constructor: - linewidth - forceSinglePass - defaultAttributeValues - index0AttributeName - uniformsNeedUpdate This fix ensures all ShaderMaterial properties are properly copied when cloning materials.
📦 Bundle sizeFull ESM build, minified and gzipped.
🌳 Bundle size after tree-shakingMinimal build including a renderer, camera, empty scene, and dependencies.
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Mugen87
reviewed
Nov 8, 2025
Mugen87
approved these changes
Nov 8, 2025
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Related issue: N/A
Description
The
copymethod inShaderMaterialwas missing several properties that are defined in the constructor. When cloning aShaderMaterialinstance, these properties were not copied to the new material, causing incorrect behavior.The missing properties are:
linewidthforceSinglePassdefaultAttributeValuesindex0AttributeNameuniformsNeedUpdateFixed by ensuring all
ShaderMaterialproperties are properly copied in thecopymethod.