Nick Porcino meshula

USD Build Club

Environment Setup

Before building USD, set up your environment variables according to your platform. You can customize these paths to match your specific setup.

Environment Variables Overview

USD_SOURCE_DIR: Location of the USD source code
USD_DEPS_DIR: Directory for building and installing dependencies
USD_BUILD_DIR: Directory for building USD

I've tried various things through the years. Starting with paper notebooks, until the early 2000s. I still flip through them from time to time to refresh my memory.

From then until about 2012, I used Twitter and a blog. http://nickporcino.com/meshula-net-archive/archive.html Forgive the terrible early web-look. From the cloud on the side, you can see that I tagged posts, and this tagging system served me very well. Of all the things I have tried, this archive is the most useful. I wish I still use it, but the scaffolding I wrote for it is very old, and I don't have time to upgrade it.

Until a couple of years ago, I used gists as a notebook. eg.

developing a new version of Landru scripting system: https://gist.github.com/meshula/48a62b20b3db57fdd7e70b78567fa316

exploring static initialization in USD:

ARCH_CONSTRUCTOR is used by pxr/base/arch/initConfig.cpp:ARCH_CONSTRUCTOR(Arch_InitConfig, 2, void) pxr/base/tf/initConfig.cpp:ARCH_CONSTRUCTOR(Tf_InitConfig, 2, void) pxr/base/tf/initConfig.cpp:ARCH_CONSTRUCTOR(Tf_InitConfigPost, 202, void) pxr/base/plug/initConfig.cpp:ARCH_CONSTRUCTOR(Plug_InitConfig, 2, void) pxr/base/vt/value.cpp:ARCH_CONSTRUCTOR(Vt_CastRegistryInit, 255)

and by the macros TF_REGISTRY_DEFINE TF_REGISTRY_DEFINE_WITH_TYPE

Hark! To shoot down a balloon without inquiry, Is a careless deed, unwise and lacking prudence. Ere the shaft be loosed, one must seek to know, Whose airy vessel 'tis that floats aloft. For in this age of great strife and conflict, The skies above are fraught with hidden foes. So let no man act with haste or rashness, Lest he draw down upon himself a dire retribution. Let wisdom guide our deeds and steer our course, And let our arrows fly with aim true and sure,

	#usda 1.0
	(
	endTimeCode = 241
	framesPerSecond = 24
	metersPerUnit = 1
	startTimeCode = 101
	timeCodesPerSecond = 24
	upAxis = "Y"
	)

	// 1. demonstrate writing OpenEXR using Hio, then reading the file back in.

	// 2. read a two channel exr file using Hio, then creata HioTexture with it

	do {
	float* data4 = (float) malloc(wh*4);
	float* amplify = data4;
	for (int i = 0; i < h; ++i) {
	for (int j = 0; j < w; ++j) {
	if (i&1) {

	source https://twitter.com/thatroblennon/status/1717312851281654173

	NASA open-sourced a monster of a megaprompt.

	I deconstructed it to see what I could learn.

	7 lessons from a genius-level AI prompt:

	The prompt (which I give in full at the bottom of this post) is designed to guide a user through the biomimicry design process.

	#usda 1.0
	(
	defaultPrim = "World"
	metersPerUnit = 0.01
	upAxis = "Y"
	)

	def Xform "World"
	{
	def Scope "Looks"



	#define LABTEXT_ODR
	#include "include/LabText/LabText.h"
	#include <stdio.h>

	#include <map>
	using std::map;
	#include <string>
	using std::string;

	Pixar's Universal Scene Description Logo, except the Logo is floating in space, like a planet, and has little USD logos whizzing around it as if they are 1950's satellites from an old Disney Man In Space film. centered subject filling half the frame, (high detailed skin:1.2), 35mm,, soft focus, soft lighting, high quality, film grain, kodachrome, chromatic aberration, slight radial distortion, NASA film footage, television scanlines, lomography, clouds that look like amoebas


	Steps: 21, Sampler: Euler a, CFG scale: 6.5, Seed: 2189048835, Size: 512x512, Model hash: 6ce0161689, Model: v1-5-pruned-emaonly
	Time taken: 2.55sTorch active/reserved: 2616/3160 MiB, Sys VRAM: 4431/32511 MiB (13.63%)