wwwtyro / gist:beecc31d65d1004f5a9d

Created March 16, 2015 05:54

GLSL ray-sphere intersection

	float raySphereIntersect(vec3 r0, vec3 rd, vec3 s0, float sr) {
	// - r0: ray origin
	// - rd: normalized ray direction
	// - s0: sphere center
	// - sr: sphere radius
	// - Returns distance from r0 to first intersecion with sphere,
	// or -1.0 if no intersection.
	float a = dot(rd, rd);
	vec3 s0_r0 = r0 - s0;
	float b = 2.0 * dot(rd, s0_r0);

dwilliamson / Out.cpp

Last active February 28, 2026 09:54

Can you force C++ call sites to prefix "out" for all mutate-via-reference parameters?

	#define out OutCatcher() <<

	template <typename TYPE> struct Out
	{
	explicit Out(TYPE& ref) : ref(ref) { }
	TYPE& ref;
	};

	struct OutCatcher
	{

ar-pa / BigInt.cpp

Last active June 16, 2026 04:52

bignum class for C++

	// In the name of Allah.
	// We're nothing and you're everything.
	// Ya Ali!

	#include <bits/stdc++.h>
	using namespace std;

	typedef long long ll;
	const int maxn = 1e2 + 14, lg = 15;

aqiank / gist:efa6eefcc81157982acc

Last active March 9, 2019 15:43

SDL2 DropEvent minimal example

	#include <SDL2/SDL.h>

	int main() {
	SDL_Init(SDL_INIT_EVERYTHING);
	SDL_Window *window = SDL_CreateWindow("Drag-and-Drop", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 800, 600, SDL_WINDOW_SHOWN);
	int running = 1;

	while (running) {
	SDL_Event event;
	while (SDL_PollEvent(&event)) {

sheredom / VkComputeSample

Created May 29, 2016 19:14

A simple Vulkan compute sample

	// This is free and unencumbered software released into the public domain.
	//
	// Anyone is free to copy, modify, publish, use, compile, sell, or
	// distribute this software, either in source code form or as a compiled
	// binary, for any purpose, commercial or non-commercial, and by any
	// means.
	//
	// In jurisdictions that recognize copyright laws, the author or authors
	// of this software dedicate any and all copyright interest in the
	// software to the public domain. We make this dedication for the benefit

henriquemenezes / android-generate-keystores.md

Last active May 5, 2026 07:14

Android: Generate Release/Debug Keystores

Generate Keystores

Debug Keystore

$ keytool -genkey -v -keystore debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000 -dname "C=US, O=Android, CN=Android Debug"

danielfbm / git2go-checkout-branch.go

Last active June 8, 2023 07:43

How to do a git checkout branch using git2go

	package main

	import (
	"errors"
	"log"
	"github.com/libgit2/git2go"
	)

	func checkoutBranch(repo *git.Repository, branchName string) error {
	checkoutOpts := &git.CheckoutOpts{

harold-b / dear imgui, selectable popup example

Created August 6, 2016 18:39

A functional selectable pseudo-popup window example using dear imgui, for use with autocomplete or input history.

shcherbakaite / CMakeLists.txt

Created August 8, 2016 21:00

Compiling GLSL to SPIR-V from CMake

	if (${CMAKE_HOST_SYSTEM_PROCESSOR} STREQUAL "AMD64")
	set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin/glslangValidator.exe")
	else()
	set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin32/glslangValidator.exe")
	endif()

	file(GLOB_RECURSE GLSL_SOURCE_FILES
	"shaders/*.frag"
	"shaders/*.vert"
	)

doppioslash / gpu_arch_resources.md

Last active August 20, 2024 16:12 — forked from jhaberstro/gpu_arch_resources

GPU Architecture Learning Resources


	const int ENTRY_COUNT = 10;
	const char* ENTRIES[ENTRY_COUNT] =
	{
	"Entry 0",
	"Entry 1",
	"Entry 2",
	"Entry 3",
	"Entry 4",
	"Entry 5",

Alejandro Juan Pérez tuket

Android: Generate Release/Debug Keystores

Generate Keystores

Debug Keystore