mirror of https://github.com/vladmandic/human
73 lines
2.1 KiB
TypeScript
73 lines
2.1 KiB
TypeScript
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import { log } from '../log';
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import * as tf from '../../dist/tfjs.esm.js';
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export const config = {
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name: 'humangl',
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priority: 99,
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canvas: null,
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gl: null,
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width: 1024,
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height: 1024,
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webGLattr: { // https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.2
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alpha: false,
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antialias: false,
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premultipliedAlpha: false,
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preserveDrawingBuffer: false,
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depth: false,
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stencil: false,
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failIfMajorPerformanceCaveat: false,
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desynchronized: true,
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},
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};
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export function register() {
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if (!tf.findBackend(config.name)) {
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log('backend registration:', config.name);
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try {
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config.canvas = (typeof OffscreenCanvas !== 'undefined') ? new OffscreenCanvas(config.width, config.height) : document.createElement('canvas');
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} catch (err) {
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log('error: cannot create canvas:', err);
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return;
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}
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try {
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config.gl = config.canvas.getContext('webgl2', config.webGLattr);
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} catch (err) {
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log('error: cannot get WebGL2 context:', err);
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return;
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}
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try {
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tf.setWebGLContext(2, config.gl);
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} catch (err) {
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log('error: cannot set WebGL2 context:', err);
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return;
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}
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try {
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const ctx = new tf.GPGPUContext(config.gl);
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tf.registerBackend(config.name, () => new tf.MathBackendWebGL(ctx), config.priority);
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} catch (err) {
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log('error: cannot register WebGL backend:', err);
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return;
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}
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try {
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const kernels = tf.getKernelsForBackend('webgl');
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kernels.forEach((kernelConfig) => {
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const newKernelConfig = { ...kernelConfig, backendName: config.name };
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tf.registerKernel(newKernelConfig);
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});
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} catch (err) {
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log('error: cannot update WebGL backend registration:', err);
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return;
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}
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try {
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tf.ENV.set('WEBGL_VERSION', 2);
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tf.ENV.set('WEBGL_MAX_TEXTURE_SIZE', config.gl.getParameter(config.gl.MAX_TEXTURE_SIZE));
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tf.ENV.set('WEBGL_FORCE_F16_TEXTURES', true);
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tf.ENV.set('WEBGL_PACK_DEPTHWISECONV', true);
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} catch (err) {
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log('error: cannot set WebGL backend flags:', err);
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return;
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}
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log('backend registered:', config.name);
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}
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}
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