Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 1x 1x | import * as macro from 'vtk.js/Sources/macros';
import vtkWebGPUBufferManager from 'vtk.js/Sources/Rendering/WebGPU/BufferManager';
import vtkWebGPUShaderCache from 'vtk.js/Sources/Rendering/WebGPU/ShaderCache';
import vtkWebGPUTextureManager from 'vtk.js/Sources/Rendering/WebGPU/TextureManager';
/**
* provide a simple WeakRefMap class to share device objects based on
* hash values so that buffers/textures etc can be shared betwen mappers.
* This is roughly based on WeakLRUCache but without the actual caching
* behavior. This is just a map of key -> WeakRef(value)
*/
/* eslint-disable no-undef */
export class WeakRefMap extends Map {
constructor() {
super();
this.registry = new FinalizationRegistry((key) => {
const entry = super.get(key);
if (entry && entry.deref && entry.deref() === undefined)
super.delete(key);
});
}
getValue(key) {
const entry = super.get(key);
if (entry) {
const value = entry.deref();
if (value !== undefined) return value;
super.delete(key);
}
return undefined;
}
setValue(key, value) {
let entry;
if (value && typeof value === 'object') {
entry = new WeakRef(value);
this.registry.register(value, key);
super.set(key, entry);
}
// else entry is undefined
return entry;
}
}
/* eslint-enable no-undef */
// ----------------------------------------------------------------------------
// vtkWebGPUDevice methods
// ----------------------------------------------------------------------------
function vtkWebGPUDevice(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkWebGPUDevice');
publicAPI.initialize = (handle) => {
model.handle = handle;
};
publicAPI.createCommandEncoder = () => model.handle.createCommandEncoder();
publicAPI.submitCommandEncoder = (commandEncoder) => {
model.handle.queue.submit([commandEncoder.finish()]);
};
publicAPI.getShaderModule = (sd) => model.shaderCache.getShaderModule(sd);
/* eslint-disable no-bitwise */
/* eslint-disable no-undef */
publicAPI.getBindGroupLayout = (val) => {
if (!val.entries) {
return null;
}
// add in basic required values if missing
for (let i = 0; i < val.entries.length; i++) {
const ent = val.entries[i];
ent.binding = ent.binding || 0;
ent.visibility =
ent.visibility || GPUShaderStage.VERTEX | GPUShaderStage.FRAGMENT;
}
// do we already have one?
const sval = JSON.stringify(val);
for (let i = 0; i < model.bindGroupLayouts.length; i++) {
if (model.bindGroupLayouts[i].sval === sval) {
return model.bindGroupLayouts[i].layout;
}
}
// create one and store it
const layout = model.handle.createBindGroupLayout(val);
// we actually only store the stringified version
// as that is what we always compare against
model.bindGroupLayouts.push({ sval, layout });
return layout;
};
publicAPI.getBindGroupLayoutDescription = (layout) => {
for (let i = 0; i < model.bindGroupLayouts.length; i++) {
if (model.bindGroupLayouts[i].layout === layout) {
return model.bindGroupLayouts[i].sval;
}
}
vtkErrorMacro('layout not found');
console.trace();
return null;
};
publicAPI.getPipeline = (hash) => {
if (hash in model.pipelines) {
return model.pipelines[hash];
}
return null;
};
publicAPI.createPipeline = (hash, pipeline) => {
pipeline.initialize(publicAPI, hash);
model.pipelines[hash] = pipeline;
};
publicAPI.onSubmittedWorkDone = () =>
model.handle.queue.onSubmittedWorkDone();
// The Device has an object cache that can be used to cache buffers,
// textures and other objects that can be shared. The basic approach is to
// call getCachedObject with a request and a create function. The request
// is based on a hash. The cache lookup just returns any entry that has a
// matching hash. If a match isn't found then the create function is
// called with any extra arguments.
// is the object already cached?
publicAPI.hasCachedObject = (hash) => model.objectCache.getValue(hash);
publicAPI.getCachedObject = (hash, creator, ...args) => {
if (!hash) {
vtkErrorMacro('attempt to cache an object without a hash');
return null;
}
const existingValue = model.objectCache.getValue(hash);
if (existingValue) {
return existingValue;
}
const createdObject = creator(...args);
model.objectCache.setValue(hash, createdObject);
return createdObject;
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
handle: null,
pipelines: null,
shaderCache: null,
bindGroupLayouts: null,
bufferManager: null,
textureManager: null,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Build VTK API
macro.obj(publicAPI, model);
macro.setGet(publicAPI, model, ['handle']);
macro.get(publicAPI, model, [
'bufferManager',
'shaderCache',
'textureManager',
]);
// this is a weak ref cache implementation, we create it without
// an expirer (so it is strictly based on garbage collection and
// objects are not held if there are no external references)
// model.objectCache = new WeakLRUCache({ expirer: false });
model.objectCache = new WeakRefMap();
model.shaderCache = vtkWebGPUShaderCache.newInstance();
model.shaderCache.setDevice(publicAPI);
model.bindGroupLayouts = [];
model.bufferManager = vtkWebGPUBufferManager.newInstance();
model.bufferManager.setDevice(publicAPI);
model.textureManager = vtkWebGPUTextureManager.newInstance();
model.textureManager.setDevice(publicAPI);
model.pipelines = {};
// For more macro methods, see "Sources/macros.js"
// Object specific methods
vtkWebGPUDevice(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkWebGPUDevice');
// ----------------------------------------------------------------------------
export default {
newInstance,
extend,
};
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