penk

How to work with x86_64 binaries in the ARM64 Linux VM on top of M1 macOS Host

Let's take Qt online installer and Qt Creator as an example.

Requirements

At the time of this writing:

vorg

//MIT License
//Copyright (c) 2021 Felix Westin
//Source: https://github.com/Fewes/MinimalAtmosphere

//Ported to GLSL by Marcin Ignac

#ifndef ATMOSPHERE_INCLUDED
#define ATMOSPHERE_INCLUDED

// -------------------------------------

bgolus

Shader "WorldNormalFromDepthTexture"
{
    Properties {
        [KeywordEnum(3 Tap, 4 Tap, Improved, Accurate)] _ReconstructionMethod ("Normal Reconstruction Method", Float) = 0
    }

    SubShader
    {
        Tags { "RenderType"="Transparent" "Queue"="Transparent" }
        LOD 100

jvcleave

Nightly required - get link from the bottom of this page (e.g. https://openframeworks.cc/ci_server/versions/nightly/of_v20190324_linuxarmv7l_nightly.tar.gz)
https://openframeworks.cc/download/


Download OF and unpack:

wget https://openframeworks.cc/ci_server/versions/nightly/of_v20190324_linuxarmv7l_nightly.tar.gz
tar -zxvf of_v20190324_linuxarmv7l_nightly.tar.gz
mv of_v20190324_linuxarmv7l_nightly openFrameworks

lxe

Receive GOES-16 and GOES-17 Images with a Raspberry Pi and RTL-SDR dongle

Also see the original Pieter Noordhuis's guide

Hardware

You need:

1. Raspberry Pi Model B (or B+) with a MicroSD Card $35-40
2. An RTL-SDR dongle:

mattatz

#ifndef __MATRIX_INCLUDED__
#define __MATRIX_INCLUDED__

#define IDENTITY_MATRIX float4x4(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)

float4x4 inverse(float4x4 m) {
    float n11 = m[0][0], n12 = m[1][0], n13 = m[2][0], n14 = m[3][0];
    float n21 = m[0][1], n22 = m[1][1], n23 = m[2][1], n24 = m[3][1];
    float n31 = m[0][2], n32 = m[1][2], n33 = m[2][2], n34 = m[3][2];
    float n41 = m[0][3], n42 = m[1][3], n43 = m[2][3], n44 = m[3][3];

mattatz

#ifndef __QUATERNION_INCLUDED__
#define __QUATERNION_INCLUDED__

#define QUATERNION_IDENTITY float4(0, 0, 0, 1)

#ifndef PI
#define PI 3.14159265359f
#endif 

// Quaternion multiplication

mattatz

#ifndef _LOOK_AT_MATRIX_
#define _LOOK_AT_MATRIX_

float4x4 look_at_matrix(float3 at, float3 eye, float3 up) {
	float3 zaxis = normalize(at - eye);
	float3 xaxis = normalize(cross(up, zaxis));
	float3 yaxis = cross(zaxis, xaxis);
	return float4x4(
		xaxis.x, yaxis.x, zaxis.x, 0,
		xaxis.y, yaxis.y, zaxis.y, 0,

drmpeg

High Quality Spectrum Painting

A quick tutorial on how to get high quality images from gr-paint and Gqrx.

Setup

• Use a newer version of Gqrx with Ref. level and dB range sliders.
• Set the FFT size in Gqrx to 32768

bkaradzic

Orthodox C++

What is Orthodox C++?

Orthodox C++ (sometimes referred as C+) is minimal subset of C++ that improves C, but avoids all unnecessary things from so called Modern C++. It's exactly opposite of what Modern C++ suppose to be.

Why not Modern C++?