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HDS Concept AVT-APL+ Keyboard

A Keytronics foam and foil keyboard for an APL capable terminal from 1984.

Protocol

The keyboard just sends idle low, 9600 baud ASCII, with special codes for function keys. It is therefore rather impractical to have it implement a USB keyboard.

1. What does the Rendering Engine Need?

Rendering Engine
- Support for Multiple Graphics APIs : OpenGL | Vulkan | DirectX12 | DirectX11 | Metal
- Content Export Pipeline : Create Maya/Max Plugins to export meshes based on Renderers needs. (Assimp Commercial Licence -> Pay)
- Texture Compression Libraries
- Material System : Artists Configure shaders, textures, parameters to import in game
- Game-side Manager of Models/Materials/Lights
- Good Visibility System (Frustum/Occlusion) (VisibilityBuffers?)
- Multi-Threded Submission System to reduce cost of submission to GPU
Lighting/Shadow Rendering System

GPU Optimization for GameDev

Graphics Pipeline / GPU Architecture Overview

2011 - A trip through the Graphics Pipeline 2011
2013 - Performance Optimization Guidelines and the GPU Architecture behind them
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

Writing a modern rendering engine

Designing a Modern GPU Interface by @BrookeHodgman
Optimizing the Graphics Pipeline with Compute by @gwihlidal
GPU Driven Rendering Pipelines by @SebAaltonen
Destiny’s Multi-threaded Renderer Architecture by @Mirror2Mask
Stingray Renderer Walkthrough by @tobias_persson

Memory Optimization (Christer Ericson, GDC 2003)
http://realtimecollisiondetection.net/pubs/GDC03_Ericson_Memory_Optimization.ppt

Cache coherency primer (Fabian Giesen)
https://fgiesen.wordpress.com/2014/07/07/cache-coherency/

Code Clinic 2015: How to Write Code the Compiler Can Actually Optimize (Mike Acton)
http://gdcvault.com/play/1021866/Code-Clinic-2015-How-to

	float D_GGX_Anisotropic(float at, float ab, float ToH, float BoH, float NoH) {
	// Burley 2012, "Physically-Based Shading at Disney"
	float a2 = at * ab;
	vec3 d = vec3(ab * ToH, at * BoH, a2 * NoH);
	return saturateMediump(a2 * sq(a2 / dot(d, d)) * (1.0 / PI));
	}

	float V_SmithGGXCorrelated_Anisotropic(float at, float ab, float ToV, float BoV,
	float ToL, float BoL, float NoV, float NoL) {
	// Heitz 2014, "Understanding the Masking-Shadowing Function in Microfacet-Based BRDFs"

	// From https://github.com/google/filament
	float D_GGX(float linearRoughness, float NoH, const vec3 h) {
	// Walter et al. 2007, "Microfacet Models for Refraction through Rough Surfaces"

	// In mediump, there are two problems computing 1.0 - NoH^2
	// 1) 1.0 - NoH^2 suffers floating point cancellation when NoH^2 is close to 1 (highlights)
	// 2) NoH doesn't have enough precision around 1.0
	// Both problem can be fixed by computing 1-NoH^2 in highp and providing NoH in highp as well

	// However, we can do better using Lagrange's identity:

	./API,SDK & Consoles
	Architecture.pdf
	Beginning_Cpp_Through_Game_Programming.pdf
	Game Engine and Game Design
	Game coding complete 4th edition.pdf

	./Others
	a-whirlwind-tour-of-python.pdf

	./AI:

	Coppied from here: http://apple2.info/wiki/index.php?title=Pinouts#Apple_.2F.2Fe_Motherboard_keyboard_connector

	J16 (Numeric Pad) J17 (Keyboard)
	11 X5 X6 26 25 Y7
	10 X6 SHFT* 24 23 Y6
	9 X4 Y9 22 21 X4
	8 X7 X3 20 19 X5
	7 n/c X1 18 17 X7
	6 Y5 X2 16 15 RESET*
	5 Y2 XO 14 13 GND