Jeremie St-Amand jesta88

Effective Modern CMake

Getting Started

For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.

After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft

Linux: Compile C++ to WebAssembly and JavaScript using Emscripten and CMake

Download and Install Emscripten

My preferred installation location is /home/user
Get the latest sdk: git clone https://github.com/emscripten-core/emsdk.git
Enter the cloned directory: cd emsdk
Checkout main: git checkout main
Install the lastest sdk tools: ./emsdk install latest
Activate the latest sdk tools: ./emsdk activate latest
Activate path variables: source ./emsdk_env.sh

GPU Optimization for GameDev

Graphics Pipeline / GPU Architecture Overview

2011 - A trip through the Graphics Pipeline 2011
2015 - Life of a triangle - NVIDIA's logical pipeline
2015 - Render Hell 2.0
2016 - How bad are small triangles on GPU and why?
2017 - GPU Performance for Game Artists
2019 - Understanding the anatomy of GPUs using Pokémon
2020 - GPU ARCHITECTURE RESOURCES

Intro

The below is a breakdown / bird's eye view of how a sparse-array backed ECS like EnTT or Shipyard works.

Please see the thanks and references at the bottom - without their help I would not have been able to share this breakdown with you... everything here is really just notes and rephrasing of what they've written already :)

Also, these notes do not cover archetype systems (like unity) nor adaptations of archetypes (like in Flecs). Though there's a couple comparative footnotes at the end.

Here we go!

	#include <stdio.h>
	#include <errno.h>
	#include <stdlib.h>
	#include <stdint.h>
	#include <assert.h>
	#include <string.h>
	#define streq(a, b) (!strcmp((a), (b)))

	#ifndef __USE_GNU
	#define __USE_GNU

	// The following code is licensed under the MIT license: https://gist.github.com/TheRealMJP/bc503b0b87b643d3505d41eab8b332ae

	// Samples a texture with Catmull-Rom filtering, using 9 texture fetches instead of 16.
	// See http://vec3.ca/bicubic-filtering-in-fewer-taps/ for more details
	float4 SampleTextureCatmullRom(in Texture2D<float4> tex, in SamplerState linearSampler, in float2 uv, in float2 texSize)
	{
	// We're going to sample a a 4x4 grid of texels surrounding the target UV coordinate. We'll do this by rounding
	// down the sample location to get the exact center of our "starting" texel. The starting texel will be at
	// location [1, 1] in the grid, where [0, 0] is the top left corner.
	float2 samplePos = uv * texSize;

	using UnityEngine;

	public class Colors
	{
	// NOTE: The follwing color names come from the CSS3 specification, Section 4.3 Extended Color Keywords
	// http://www.w3.org/TR/css3-color/#svg-color

	public static readonly Color AliceBlue = new Color32(240,248,255,255);
	public static readonly Color AntiqueWhite = new Color32(250,235,215,255);
	public static readonly Color Aqua= new Color32(0,255,255,255);

	// Baseline version without prefetch
	static const LRMEntry * lrm_search_one_basic(const LRM * lrm, const U8 * ptr)
	{
	LRM_hash_t hash = lrm_hash8(ptr);

	// Jump-in: narrow down the search interval using the jump table
	LRM_hash_t ji = hash >> lrm->jumpInShift;
	S32 jump1 = lrm->jumpIn[ji];
	S32 jump2 = lrm->jumpIn[ji + 1];

	//
	// Author: Jonathan Blow
	// Version: 1
	// Date: 31 August, 2018
	//
	// This code is released under the MIT license, which you can find at
	//
	// https://opensource.org/licenses/MIT
	//
	//