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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 | 1x 1x 1x 1x 1x 1x | import * as macro from 'vtk.js/Sources/macros';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
import vtkDataArray from 'vtk.js/Sources/Common/Core/DataArray';
import vtkWebGPUBuffer from 'vtk.js/Sources/Rendering/WebGPU/Buffer';
import vtkWebGPUIndexBuffer from 'vtk.js/Sources/Rendering/WebGPU/IndexBuffer';
import vtkWebGPUTypes from 'vtk.js/Sources/Rendering/WebGPU/Types';
import Constants from './Constants';
const { BufferUsage } = Constants;
const { vtkErrorMacro } = macro;
const { VtkDataTypes } = vtkDataArray;
// the webgpu constants all show up as undefined
/* eslint-disable no-undef */
// ----------------------------------------------------------------------------
// Static API
// ----------------------------------------------------------------------------
export const STATIC = {};
function _getFormatForDataArray(dataArray) {
let format;
switch (dataArray.getDataType()) {
case VtkDataTypes.UNSIGNED_CHAR:
format = 'uint8';
break;
case VtkDataTypes.FLOAT:
format = 'float32';
break;
case VtkDataTypes.UNSIGNED_INT:
format = 'uint32';
break;
case VtkDataTypes.INT:
format = 'sint32';
break;
case VtkDataTypes.DOUBLE:
format = 'float32';
break;
case VtkDataTypes.UNSIGNED_SHORT:
format = 'uint16';
break;
case VtkDataTypes.SHORT:
format = 'sin16';
break;
default:
format = 'float32';
break;
}
switch (dataArray.getNumberOfComponents()) {
case 2:
format += 'x2';
break;
case 3:
// only 32bit types support x3
if (!format.includes('32')) {
vtkErrorMacro(`unsupported x3 type for ${format}`);
}
format += 'x3';
break;
case 4:
format += 'x4';
break;
default:
break;
}
return format;
}
function packArray(indexBuffer, inArrayData, numComp, outputType, options) {
const result = {};
const flatSize = indexBuffer.getFlatSize();
if (!flatSize) {
return result;
}
// setup shift and scale
let shift = [0.0, 0.0, 0.0, 0.0];
if (options.shift) {
if (options.shift.length) {
shift = options.shift;
} else {
shift.fill(options.shift);
}
}
let scale = [1.0, 1.0, 1.0, 1.0];
if (options.scale) {
if (options.scale.length) {
scale = options.scale;
} else {
scale.fill(options.scale);
}
}
const packExtra = Object.prototype.hasOwnProperty.call(options, 'packExtra')
? options.packExtra
: false;
let addAPoint;
let vboidx = 0;
const stride = numComp + (packExtra ? 1 : 0);
const packedVBO = macro.newTypedArray(outputType, flatSize * stride);
// pick the right function based on point versus cell data
let flatIdMap = indexBuffer.getFlatIdToPointId();
if (options.cellData) {
flatIdMap = indexBuffer.getFlatIdToCellId();
}
// add data based on number of components
if (numComp === 1) {
addAPoint = function addAPointFunc(i) {
packedVBO[vboidx++] = scale[0] * inArrayData[i] + shift[0];
};
} else if (numComp === 2) {
addAPoint = function addAPointFunc(i) {
packedVBO[vboidx++] = scale[0] * inArrayData[i] + shift[0];
packedVBO[vboidx++] = scale[1] * inArrayData[i + 1] + shift[1];
};
} else if (numComp === 3 && !packExtra) {
addAPoint = function addAPointFunc(i) {
packedVBO[vboidx++] = scale[0] * inArrayData[i] + shift[0];
packedVBO[vboidx++] = scale[1] * inArrayData[i + 1] + shift[1];
packedVBO[vboidx++] = scale[2] * inArrayData[i + 2] + shift[2];
};
} else if (numComp === 3 && packExtra) {
addAPoint = function addAPointFunc(i) {
packedVBO[vboidx++] = scale[0] * inArrayData[i] + shift[0];
packedVBO[vboidx++] = scale[1] * inArrayData[i + 1] + shift[1];
packedVBO[vboidx++] = scale[2] * inArrayData[i + 2] + shift[2];
packedVBO[vboidx++] = scale[3] * 1.0 + shift[3];
};
} else if (numComp === 4) {
addAPoint = function addAPointFunc(i) {
packedVBO[vboidx++] = scale[0] * inArrayData[i] + shift[0];
packedVBO[vboidx++] = scale[1] * inArrayData[i + 1] + shift[1];
packedVBO[vboidx++] = scale[2] * inArrayData[i + 2] + shift[2];
packedVBO[vboidx++] = scale[3] * inArrayData[i + 3] + shift[3];
};
}
// for each entry in the flat array process it
for (let index = 0; index < flatSize; index++) {
const inArrayId = numComp * flatIdMap[index];
addAPoint(inArrayId);
}
result.nativeArray = packedVBO;
return result;
}
function getNormal(pointData, i0, i1, i2) {
const v1 = [
pointData[i2 * 3] - pointData[i1 * 3],
pointData[i2 * 3 + 1] - pointData[i1 * 3 + 1],
pointData[i2 * 3 + 2] - pointData[i1 * 3 + 2],
];
const v2 = [
pointData[i0 * 3] - pointData[i1 * 3],
pointData[i0 * 3 + 1] - pointData[i1 * 3 + 1],
pointData[i0 * 3 + 2] - pointData[i1 * 3 + 2],
];
const result = [];
vtkMath.cross(v1, v2, result);
vtkMath.normalize(result);
return result;
}
function generateNormals(cellArray, pointArray) {
const pointData = pointArray.getData();
const cellArrayData = cellArray.getData();
if (!cellArrayData || !pointData) {
return null;
}
// return a cellArray of normals
const packedVBO = new Int8Array(cellArray.getNumberOfCells() * 4);
const size = cellArrayData.length;
let vboidx = 0;
for (let index = 0; index < size; ) {
const normal = getNormal(
pointData,
cellArrayData[index + 1],
cellArrayData[index + 2],
cellArrayData[index + 3]
);
packedVBO[vboidx++] = 127 * normal[0];
packedVBO[vboidx++] = 127 * normal[1];
packedVBO[vboidx++] = 127 * normal[2];
packedVBO[vboidx++] = 127;
index += cellArrayData[index] + 1;
}
return packedVBO;
}
// ----------------------------------------------------------------------------
// vtkWebGPUBufferManager methods
// ----------------------------------------------------------------------------
function vtkWebGPUBufferManager(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkWebGPUBufferManager');
function _createBuffer(req) {
// if a dataArray is provided set the nativeArray
if (req.dataArray && !req.nativeArray) {
req.nativeArray = req.dataArray.getData();
}
let buffer;
let gpuUsage;
// handle index buffers
if (req.usage === BufferUsage.Index) {
// todo change to FlattenedIndex to be more clear
buffer = vtkWebGPUIndexBuffer.newInstance({ label: req.label });
buffer.setDevice(model.device);
/* eslint-disable no-bitwise */
gpuUsage = GPUBufferUsage.INDEX | GPUBufferUsage.COPY_DST;
/* eslint-enable no-bitwise */
buffer.buildIndexBuffer(req);
buffer.createAndWrite(req.nativeArray, gpuUsage);
buffer.setArrayInformation([{ format: req.format }]);
}
// create one if not done already
if (!buffer) {
buffer = vtkWebGPUBuffer.newInstance({ label: req.label });
buffer.setDevice(model.device);
}
// handle uniform buffers
if (req.usage === BufferUsage.UniformArray) {
/* eslint-disable no-bitwise */
gpuUsage = GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST;
/* eslint-enable no-bitwise */
buffer.createAndWrite(req.nativeArray, gpuUsage);
}
// handle storage buffers
if (req.usage === BufferUsage.Storage) {
/* eslint-disable no-bitwise */
gpuUsage = GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_DST;
/* eslint-enable no-bitwise */
buffer.createAndWrite(req.nativeArray, gpuUsage);
}
// handle textures
if (req.usage === BufferUsage.Texture) {
/* eslint-disable no-bitwise */
gpuUsage = GPUBufferUsage.COPY_SRC;
/* eslint-enable no-bitwise */
buffer.createAndWrite(req.nativeArray, gpuUsage);
}
// all of the below types that have gpuUsage = VERTEX require format
// to be provided.
// handle point data
if (req.usage === BufferUsage.PointArray) {
gpuUsage = GPUBufferUsage.VERTEX;
const arrayType = vtkWebGPUTypes.getNativeTypeFromBufferFormat(
req.format
);
const result = packArray(
req.indexBuffer,
req.dataArray.getData(),
req.dataArray.getNumberOfComponents(),
arrayType,
{
packExtra: req.packExtra,
shift: req.shift,
scale: req.scale,
cellData: req.cellData,
cellOffset: req.cellOffset,
}
);
buffer.createAndWrite(result.nativeArray, gpuUsage);
buffer.setStrideInBytes(
vtkWebGPUTypes.getByteStrideFromBufferFormat(req.format)
);
buffer.setArrayInformation([
{
offset: 0,
format: req.format,
interpolation: req.cellData ? 'flat' : 'perspective',
},
]);
}
// handle normals from points, snorm8x4
if (req.usage === BufferUsage.NormalsFromPoints) {
gpuUsage = GPUBufferUsage.VERTEX;
const arrayType = vtkWebGPUTypes.getNativeTypeFromBufferFormat(
req.format
);
const normals = generateNormals(req.cells, req.dataArray);
const result = packArray(req.indexBuffer, normals, 4, arrayType, {
cellData: true,
});
buffer.createAndWrite(result.nativeArray, gpuUsage);
buffer.setStrideInBytes(
vtkWebGPUTypes.getByteStrideFromBufferFormat(req.format)
);
buffer.setArrayInformation([
{ offset: 0, format: req.format, interpolation: 'flat' },
]);
}
if (req.usage === BufferUsage.RawVertex) {
gpuUsage = GPUBufferUsage.VERTEX;
buffer.createAndWrite(req.nativeArray, gpuUsage);
buffer.setStrideInBytes(
vtkWebGPUTypes.getByteStrideFromBufferFormat(req.format)
);
buffer.setArrayInformation([{ offset: 0, format: req.format }]);
}
buffer.setSourceTime(req.time);
return buffer;
}
// is the buffer already present?
publicAPI.hasBuffer = (hash) => model.device.hasCachedObject(hash);
publicAPI.getBuffer = (req) => {
// if we have a source the get/create/cache the buffer
if (req.hash) {
return model.device.getCachedObject(req.hash, _createBuffer, req);
}
return _createBuffer(req);
};
publicAPI.getBufferForPointArray = (dataArray, indexBuffer) => {
const format = _getFormatForDataArray(dataArray);
const buffRequest = {
hash: `${dataArray.getMTime()}I${indexBuffer.getMTime()}${format}`,
usage: BufferUsage.PointArray,
format,
dataArray,
indexBuffer,
};
return publicAPI.getBuffer(buffRequest);
};
publicAPI.getFullScreenQuadBuffer = () => {
if (model.fullScreenQuadBuffer) {
return model.fullScreenQuadBuffer;
}
model.fullScreenQuadBuffer = vtkWebGPUBuffer.newInstance();
model.fullScreenQuadBuffer.setDevice(model.device);
// prettier-ignore
const array = new Float32Array([
-1.0, -1.0, 0.0,
1.0, -1.0, 0.0,
1.0, 1.0, 0.0,
-1.0, -1.0, 0.0,
1.0, 1.0, 0.0,
-1.0, 1.0, 0.0,
]);
model.fullScreenQuadBuffer.createAndWrite(array, GPUBufferUsage.VERTEX);
model.fullScreenQuadBuffer.setStrideInBytes(12);
model.fullScreenQuadBuffer.setArrayInformation([
{ offset: 0, format: 'float32x3' },
]);
return model.fullScreenQuadBuffer;
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
device: null,
fullScreenQuadBuffer: null,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Object methods
macro.obj(publicAPI, model);
macro.setGet(publicAPI, model, ['device']);
vtkWebGPUBufferManager(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend);
// ----------------------------------------------------------------------------
export default { newInstance, extend, ...STATIC, ...Constants };
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