forked from Rowland/EG
30 lines
964 B
JavaScript
30 lines
964 B
JavaScript
import numberOfComponentsForType from "./numberOfComponentsForType.js";
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import ComponentDatatype from "../../Core/ComponentDatatype.js";
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import defined from "../../Core/defined.js";
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/**
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* Returns the byte stride of the provided accessor.
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* If the byteStride is 0, it is calculated based on type and componentType
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*
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* @param {object} gltf A javascript object containing a glTF asset.
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* @param {object} accessor The accessor.
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* @returns {number} The byte stride of the accessor.
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*
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* @private
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*/
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function getAccessorByteStride(gltf, accessor) {
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const bufferViewId = accessor.bufferView;
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if (defined(bufferViewId)) {
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const bufferView = gltf.bufferViews[bufferViewId];
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if (defined(bufferView.byteStride) && bufferView.byteStride > 0) {
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return bufferView.byteStride;
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}
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}
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return (
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ComponentDatatype.getSizeInBytes(accessor.componentType) *
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numberOfComponentsForType(accessor.type)
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);
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}
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export default getAccessorByteStride;
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