beesandbombs

float[][] result;
float t, c;

float ease(float p) {
  p = c01(p);
  return 3*p*p - 2*p*p*p;
}

float ease(float p, float g) {
  p = c01(p);

codepo8

Cheating like a pro – a few tools to get you pixeling and converting for C64

• Slides as PDF

Demos

• The Trooper by Carrion/Bonzai
• The Tropper making of on YouTube
• Project Argon 3 colour logo by rexbeng (amazing dithering example)
• Digital Talk Logo

kovetskiy

#!/bin/bash
###
### my-script — does one thing well
###
### Usage:
###   my-script <input> <output>
###
### Options:
###   <input>   Input file to read.
###   <output>  Output file to write. Use '-' for stdout.

emmabostian

Seven different types of CSS attribute selectors

// This attribute exists on the element
[value]

// This attribute has a specific value of cool
[value='cool'] 

// This attribute value contains the word cool somewhere in it
[value*='cool'] 

kiley0

const mdColors = [
  '#F44336',
  '#FFEBEE',
  '#FFCDD2',
  '#EF9A9A',
  '#E57373',
  '#EF5350',
  '#F44336',
  '#E53935',
  '#D32F2F',

CuriouserThing

For the clock times within this section, if a single value is given, it represents the number of clock cycles in single-speed (4.194304 MHz) mode (e.g. a nop is 4 clocks), while the number of clocks in double-speed mode is both unknown and unassumed. If two values are given, they represent first the clocks in single-speed mode and second the clocks in double-speed (8.388608 MHz) mode (e.g. a nop is 4/4 clocks; an HDMA transfer is 32/64 clocks).

Scanline Timing

A single scanline is 456/908 clocks.

By AntonioND's tests in section 8, Mode 2 (OAM search) consistently takes 80/160 clocks.

By Kevtris' tests, Mode 3 (data transfer) takes 173.5 clocks at a minimum (clocks in double-speed mode unknown since this involves non-CPU communication).

djspiewak

Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.

This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea

jblang

; A Mind is Born by Linus Akesson
; https://linusakesson.net/scene/a-mind-is-born/index.php
; transcribed to 64tass and further commented by J.B. Langston

; important locations after program is copied to zero page

vmptr      = $cb        ; video matrix
clock      = $13        ; global clock lsb - indicates position within bar
clock_msb  = $20        ; global clock msb - indicates bar of song
script     = $21        ; poke table

SciresM

Retail NAND FIRM:

Perfect Signature:
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

Exponentiated Message:
0002B31331C710412333A587890F9CF0B6A86E71C8A78F96B76082903B3E54EA9AB935978BBF2493BB829E9A5A6060B0C7811881176BCF9FE8B1C5C5E0A95327DB8B52EC178A884AD9CF28DB8BBF2922C05FD034AC81BD231AEB0CBEF6F7DE6F3A30812B9F9A83BF33251891BFA18FA38A64C6FF5F77DBE11C3780C23EA9F6D00F9C01D6FC8A878591D36C4F64ACA6B8D11BBEB21476103C6E86FF2196D465BA4DB78F81F1D3BCCA186BDDD56739A12DD36122F3F5B3DD518DDAC4FA29395EA4CD9DFD80AF8A399990F4FDD3CD6B07EC2122437CCFC3B62B1D1493A7DBB442003

Bananattack

; Variable Width Font Library
;
; by Andrew G. Crowell (@eggboycolor)
;
; --
;
; Copyright (c) 2016 Andrew G. Crowell
; 
; Permission is hereby granted, free of charge, to any person obtaining a copy of
; this software and associated documentation files (the "Software"), to deal in