Tim Gfrerer tgfrerer

Setup

Copy 99-u2f_lock_screen.rules to /etc/udev/rules.d.
Copy gnome_lock_all_sessions to /usr/local/bin.
Mark gnome_lock_all_sessions as executable: chmod +x /usr/local/bin/gnome_lock_all_sessions
Reload udev: udevadm control -R

Note

You might have to update the ENV{ID_MODEL_FROM_DATABASE} value in 99-u2f_lock_screen.rules to match the type of Yubikey that you are using. You can query it by issuing:

This command-line utility generates a bitonic merge sort network based on number of sortable items n, and workgroup size.

Choose workgroup size to be ==n for an ideal sorting network. Number of sortable elements n must be power of two.

In-depth discussion, GPU implementation, and context for this code: https://poniesandlight.co.uk/reflect/bitonic_merge_sort/

Keybase proof

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I am tgfrerer on github.
I am tgfrerer (https://keybase.io/tgfrerer) on keybase.
I have a public key ASCROk4gEgu9DxcKrfoJ5u3A0OOIhkRcZ7Z2hncyv4_l7go

To claim this, I am signing this object:

	#include <iostream>

	using namespace std;

	#define COMPONENT( x ) \
	struct x { \
	static constexpr auto type_id = #x; \
	}

	COMPONENT( ComponentA );

	// Generate mipmap from input data
	// adapted from https://github.com/ValveSoftware/openvr/blob/1fb1030f2ac238456dca7615a4408fb2bb42afb6/samples/hellovr_vulkan/hellovr_vulkan_main.cpp#L2271
	template <typename PixelType, const size_t numChannels>
	static void generate_mipmap( const PixelType pSrc, PixelType pDst, uint32_t const nSrcWidth, uint32_t const nSrcHeight, uint32_t pDstWidthOut, uint32_t pDstHeightOut ) {

	*pDstWidthOut = nSrcWidth / 2;
	if ( *pDstWidthOut <= 0 ) {
	*pDstWidthOut = 1;
	}
	*pDstHeightOut = nSrcHeight / 2;

	void ofCamera::drawFrustum(const ofRectangle & viewport) const {
	ofPushMatrix();

	// In World Space, the camera frustum is the "capped pyramid" which
	// contains everything which can be seen from a camera.
	//
	// In Clip Space, the frustum is defined as a box with dimensions: -1, -1, -1 to +1, +1, +1.
	//
	// Much simpler.
	//

	#include "ofMain.h"

	class ofApp: public ofBaseApp {

	ofEasyCam cam[2];
	size_t activeCam = 1;

	public:
	void ofApp::setup() {
	cam[0].setupPerspective( false, 30, 20.f, 500.f );

	#include "ofMain.h"

	ofPolyline polyline;
	uint64_t pointFlags = -1;


	class ofApp : public ofBaseApp
	{

	public:

	#include "ofMain.h"



	class ofApp : public ofBaseApp {

	ofVboMesh mSphere;
	ofNode mNode;
	ofNode mNode1;
	ofNode mNode2;

	#include "ofMain.h"
	#include "ofApp.h"

	class ofApp : public ofBaseApp {
	ofEventListener listener;

	ofParameter<float> param;

	public:
	void setup() {