34 lines
665 B
JavaScript
34 lines
665 B
JavaScript
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import { GPUChunkSize } from './constants.js';
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function getFloatLength( floatLength ) {
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// ensure chunk size alignment (STD140 layout)
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return floatLength + ( ( GPUChunkSize - ( floatLength % GPUChunkSize ) ) % GPUChunkSize );
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}
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function getVectorLength( count, vectorLength = 4 ) {
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const strideLength = getStrideLength( vectorLength );
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const floatLength = strideLength * count;
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return getFloatLength( floatLength );
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}
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function getStrideLength( vectorLength ) {
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const strideLength = 4;
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return vectorLength + ( ( strideLength - ( vectorLength % strideLength ) ) % strideLength );
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}
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export {
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getFloatLength,
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getVectorLength,
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getStrideLength
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};
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