Charlie Shenton cshenton

cshenton / fxhash.c

Created November 24, 2025 11:10

	#include <stdint.h>

	// Firefox hash or "fxhash". Prefer len to be a compile-time multiple of 8. Zero pad input if necessary.
	// This is a rubbish hash function. I just wanted to implement it.
	uint64_t fxhash(const uint8_t* s, uint64_t len)
	{
	const uint32_t ROTATE = 5;
	const uint64_t SEED = 0x517CC1B727220A95ULL;

	uint64_t state = 0;

cshenton / tri.c

Last active November 23, 2024 10:49

Seeing how fast a d3d11 swapchain can go.

cshenton / d3d11_triangle.c

Last active May 14, 2024 16:09

D3D11 Triangle in C99

cshenton / block_allocator.odin

Last active September 25, 2025 09:04

Allocator based on Sebastian Aaltonen's Offset Allocator, for suballocating GPU heaps

	package block_allocator

	// Allocator based on Sebastian Aaltonen's Offset Allocator:
	// https://github.com/sebbbi/OffsetAllocator/blob/main/offsetAllocator.cpp

	import "core:fmt"
	import "core:math/bits"
	import "core:math/rand"

	assert_allocator_layout_good :: proc(allocator: ^Block_Allocator) {

cshenton / client.c

Created August 8, 2021 10:45

Enet Simple Example

	#include <stdio.h>

	#define _WINSOCK_DEPRECATED_NO_WARNINGS
	#define ENET_IMPLEMENTATION
	#include "enet.h"

	int main()
	{
	if (enet_initialize() != 0)
	{

cshenton / array_info.zig

Last active December 23, 2019 05:08

arrayInfo programming

	const std = @import("std");

	const ArrayInfo = struct {
	rank: usize,
	child: type,
	};

	fn arrayInfo(comptime artype: type) ArrayInfo {
	var rank: usize = 0;
	var currentType: type = artype;

cshenton / ones_zeros.zig

Created December 19, 2019 05:03

Ones, Zeros in Zig

	const expect = @import("std").testing.expect;

	/// The additive identity for this scalar type.
	inline fn zero(comptime T: type) T {
	return 0;
	}

	/// The multiplicative identity for this scalar type.
	inline fn one(comptime T: type) T {
	return 1;

cshenton / vector_ternary_if.zig

Last active December 19, 2019 01:30

Zig Vector Ternary If

	const assert = @import("std").debug.assert;

	fn make_mask_3_f32(cond: [3]bool) [3]f32 {
	var mask: [3]f32 = undefined;
	const ar_cond: [3]bool = cond;

	comptime var i = 0;
	inline while (i < 3) : (i += 1) {
	mask[i] = if (ar_cond[i]) 1.0 else 0.0;
	}

cshenton / unwoops.go

Last active September 4, 2018 15:34

	package main

	import (
	"fmt"
	"math/rand"
	"time"
	)

	// This program starts numProcs goroutines which each generate numSteps random
	// numbers and prints the amount of time it takes.

cshenton / woops.go

Last active September 4, 2018 14:59

	// This program starts N goroutines which each generate numSteps random
	// numbers and prints the amount of time it takes.
	//
	// See if you can you figure out why it doesn't parallelise properly.
	package main

	import (
	"fmt"
	"math/rand"
	"time"