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@munrocket
munrocket / wgsl_3d_sdf.md
Last active November 3, 2025 09:27
WGSL 3D SDF Primitives

WGSL 3D SDF Primitives

Revision: 06.08.2023, https://compute.toys/view/407

Sphere - exact

fn sdSphere(p: vec3f, r: f32) -> f32 {
  return length(p) - r;
}
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#!/bin/bash
#
# Container source: https://github.com/OpenAccess-AI-Collective/axolotl/blob/main/docker/Dockerfile-runpod
#
#
# To run this in RunPod with `winglian/axolotl-runpod:main-cu118-2.0.0`, set
# Expose HTTP Ports (Max 10): 7860,8888
# docker command: `bash -c "curl -H 'Cache-Control: no-cache' https://raw.githubusercontent.com/utensil/llm-playground/main/scripts/entry/prepare_ax.sh -sSf | bash"`
# JUPYTER_PASSWORD change to your secret
# HUGGINGFACE_TOKEN change to your token from https://huggingface.co/settings/tokens
@fpvandoorn
fpvandoorn / MessyCode.lean
Last active October 9, 2023 17:45
Some experiments using type class graphs in Lean 4
import Mathlib
open Lean Meta Elab Command
-- generalized
/-- Write an import graph, represented as a an array of `NameMap`s to the ".dot" graph format.
If `("style1", graph1)` is in `graphs`, then the edges in `graph1` will be labeled with `[style1]`.
Example: `asStyledDotGraph #[("", graph1), ("style=dashed", graph2)]` -/
def asStyledDotGraph [ForIn Id α Name] (graphs : Array (String × NameMap α))
(header := "import_graph") : String := Id.run do
@rao107
rao107 / Ch1-5Q1.lean
Created November 17, 2023 05:47
Chapter 1 Section 5 Q1 of Introduction to Topology by Mendelson
/-
The original problem is incorrect. Instead, we prove that the statement is true
if and only if either A or B is the universe
-/
example (h0 : X ⊆ A) (h1 : Y ⊆ B) :
A = Set.univ ∨ B = Set.univ ↔ (X ×ˢ Y)ᶜ = A ×ˢ Yᶜ ∪ Xᶜ ×ˢ B := by
apply Iff.intro
{
intro h2
rw [Set.compl_prod_eq_union, Set.union_comm]
@eric-wieser
eric-wieser / GeometricGrades.lean
Created November 21, 2023 13:28
Grade selection with Mathlib
import Mathlib.LinearAlgebra.CliffordAlgebra.Contraction
import Mathlib.LinearAlgebra.ExteriorAlgebra.Grading
set_option pp.proofs.withType false
variable {R M} [CommRing R] [Invertible (2 : R)] [AddCommGroup M] [Module R M] (Q : QuadraticForm R M)
abbrev ExteriorAlgebra.rMultivector (r : ℕ) : Submodule R (ExteriorAlgebra R M) :=
(LinearMap.range (ExteriorAlgebra.ι R : M →ₗ[R] _) ^ r)
@nurpax
nurpax / test_runner.zig
Last active July 21, 2025 06:54
zig test runner
// Modded from from https://gist.github.com/karlseguin/c6bea5b35e4e8d26af6f81c22cb5d76b
// in your build.zig, you can specify a custom test runner:
// const tests = b.addTest(.{
// .target = target,
// .optimize = optimize,
// .test_runner = .{ .path = b.path("test_runner.zig"), .mode = .simple }, // add this line
// .root_source_file = b.path("src/main.zig"),
// });
//
#!/usr/bin/env python
"""Get images from PhotoPrism and label them."""
import json
import logging
import tempfile
import time
from pprint import pformat
import boto3
@runevision
runevision / BurstSDFGenerator.cs
Created September 11, 2024 07:48
Signed Distance Field generator for Unity with Burst support
/*
Based on the Anti-aliased Euclidean distance transform described by Stefan Gustavson and
Robin Strand. For further information, see https://contourtextures.wikidot.com/ and
https://web.archive.org/web/20220503051209/https://weber.itn.liu.se/~stegu/edtaa/
The algorithm is an adapted version of Stefan Gustavson's code, it inherits the copyright
statement below, which applies to this file only.
The rewrite with Unity Burst support makes the execution 40 times faster by default,
and 75 times faster if the passed in textures are both of type TextureFormat.RGBAFloat.
@nihalpasham
nihalpasham / CubeCL_Architecture_Overview.md
Last active September 29, 2025 17:47
CubeCL Architecture Overview - Running Rust on your GPU (WebGPU, CUDA)

CubeCL

#gpu #kernel #rust

High Level Overview:

  • GPU kernels in Rust
  • Comptime
    • Automatic vectorization
    • Instruction and shape specialization
  • Loop unrolling