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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | 1x 1x | import * as macro from 'vtk.js/Sources/macros'; import vtkWebGPUTypes from 'vtk.js/Sources/Rendering/WebGPU/Types'; function arraysEqual(a, b) { if (a === b) return true; if (a == null || b == null) return false; if (a.length !== b.length) return false; for (let i = 0; i < a.length; ++i) { if (!b.includes(a[i])) return false; } return true; } // ---------------------------------------------------------------------------- // vtkWebGPUVertexInput methods // ---------------------------------------------------------------------------- function vtkWebGPUVertexInput(publicAPI, model) { // Set our className model.classHierarchy.push('vtkWebGPUVertexInput'); publicAPI.addBuffer = (buffer, inames, stepMode = 'vertex') => { let names = inames; if (!Array.isArray(names)) { names = [names]; } // only add if it is a new setting for (let i = 0; i < model.inputs.length; i++) { if (arraysEqual(model.inputs[i].names, names)) { if (model.inputs[i].buffer === buffer) { return; } model.inputs[i].buffer = buffer; return; } } // when adding a new entry, make sure we sort the array // as the order is important to the shader and must always // be the same, so alphabetical is an easy option model.inputs.push({ buffer, stepMode, names }); model.inputs = model.inputs.sort((v1, v2) => { if (v1.names[0] < v2.names[0]) { return -1; } if (v1.names[0] > v2.names[0]) { return 1; } return 0; }); }; publicAPI.removeBufferIfPresent = (name) => { for (let i = 0; i < model.inputs.length; i++) { if (model.inputs[i].names.includes(name)) { model.inputs.splice(i, 1); } } }; publicAPI.getBuffer = (name) => { for (let i = 0; i < model.inputs.length; i++) { if (model.inputs[i].names.includes(name)) { return model.inputs[i].buffer; } } return null; }; publicAPI.hasAttribute = (name) => { for (let i = 0; i < model.inputs.length; i++) { if (model.inputs[i].names.includes(name)) { return true; } } return false; }; publicAPI.getAttributeTime = (name) => { for (let i = 0; i < model.inputs.length; i++) { if (model.inputs[i].names.includes(name)) { return model.inputs[i].buffer.getSourceTime(); } } return 0; }; publicAPI.getShaderCode = () => { let result = ''; let nameCount = 0; for (let i = 0; i < model.inputs.length; i++) { for (let nm = 0; nm < model.inputs[i].names.length; nm++) { const arrayInfo = model.inputs[i].buffer.getArrayInformation()[nm]; const type = vtkWebGPUTypes.getShaderTypeFromBufferFormat( arrayInfo.format ); if (nameCount > 0) { result += ',\n'; } result = `${result} @location(${nameCount}) ${model.inputs[i].names[nm]} : ${type}`; nameCount++; } } return result; }; publicAPI.getVertexInputInformation = () => { const info = {}; if (model.inputs.length) { const vertexBuffers = []; let nameCount = 0; for (let i = 0; i < model.inputs.length; i++) { const buf = model.inputs[i].buffer; const buffer = { arrayStride: buf.getStrideInBytes(), stepMode: model.inputs[i].stepMode, attributes: [], }; const arrayInfo = buf.getArrayInformation(); for (let nm = 0; nm < model.inputs[i].names.length; nm++) { buffer.attributes.push({ shaderLocation: nameCount, offset: arrayInfo[nm].offset, format: arrayInfo[nm].format, }); nameCount++; } vertexBuffers.push(buffer); } info.buffers = vertexBuffers; } return info; }; publicAPI.bindBuffers = (renderEncoder) => { for (let i = 0; i < model.inputs.length; i++) { renderEncoder.setVertexBuffer(i, model.inputs[i].buffer.getHandle()); } if (model.indexBuffer) { renderEncoder.setIndexBuffer( model.indexBuffer.getHandle(), model.indexBuffer.getArrayInformation()[0].format ); } }; publicAPI.getReady = () => {}; publicAPI.releaseGraphicsResources = () => { if (model.created) { model.inputs = []; model.bindingDescriptions = []; model.attributeDescriptions = []; } }; } // ---------------------------------------------------------------------------- // Object factory // ---------------------------------------------------------------------------- const DEFAULT_VALUES = { inputs: null, bindingDescriptions: false, attributeDescriptions: null, indexBuffer: null, }; // ---------------------------------------------------------------------------- export function extend(publicAPI, model, initialValues = {}) { Object.assign(model, DEFAULT_VALUES, initialValues); // Build VTK API macro.obj(publicAPI, model); model.bindingDescriptions = []; model.attributeDescriptions = []; model.inputs = []; macro.setGet(publicAPI, model, [ 'created', 'device', 'handle', 'indexBuffer', ]); // For more macro methods, see "Sources/macros.js" // Object specific methods vtkWebGPUVertexInput(publicAPI, model); } // ---------------------------------------------------------------------------- export const newInstance = macro.newInstance(extend, 'vtkWebGPUVertexInput'); // ---------------------------------------------------------------------------- export default { newInstance, extend }; |