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</style><div class="default-font-1757439329361" dir="ltr"><p>There are contradictions in the V4.0 specification.</p><p><a href="https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/components/shape.html#X3DOneSidedMaterialNode" target="_blank" title="原始URL: https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/components/shape.html#X3DOneSidedMaterialNode
按住Ctrl并单击可访问链接">12.3.4 X3DOneSidedMaterialNode</a> says "The emissiveColor field is defined in implementing nodes".</p><p>But <a href="https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/components/shape.html#UnlitMaterial" target="_blank" title="原始URL: https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/components/shape.html#UnlitMaterial
按住Ctrl并单击可访问链接">12.4.10 UnlitMaterial</a> says "This node inherits the emissiveColor field from the X3DOneSidedMaterialNode ancestor, but the default value of this field changes: only for UnlitMaterial, the default emissiveColor is 1 1 1 (white), instead of 0 0 0 (black, default of X3DOneSidedMaterialNode.emissiveColor)".</p><p>Should the emissiveColor field be defined in X3DOneSidedMaterialNode and default to black?</p></div>