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