Erfan-Ahmadi

This is aimed at new hires or anyone encountering floating-point issues. It doesn't go into much details and is a high-level overview of floating point concepts:

1. A floating-point number = mantissa × 2^exponent, where the mantissa (sometimes called significand) holds the significant digits and the exponent sets the scale. In fp32, exponent takes 8 bits and mantissa 23 bits (+1 sign bit)

2. Between [2^p, 2^(p+1)), floating point numbers are equally spaced (smallest difference between two consecutive floats). For example: fp32 numbers between 2.0 and 4.0 have spacing of 2^-22 Numbers between 1024.0 and 2048have spacing of 2^-13. that's what we call the ULP/error in that range.

• It's actually a fact that smallest difference between two consecutive floats (ULP) with the same exponent is: 2^−23 * 2^p
• notice how the larger the number gets, the spacing becomes wider, that means the rounding error of the operations get larger. (but the relative error stays the same)
• Exerci

Erfan-Ahmadi

#include "lib.h"

#include "../3rd/minhook/include/MinHook.h"
#include "../3rd/minhook/src/buffer.c"
#include "../3rd/minhook/src/hook.c"
#include "../3rd/minhook/src/trampoline.c"
#include "../3rd/minhook/src/hde/hde64.c"

typedef void* (*fn_malloc)(size_t size);
typedef void  (*fn_free)(void* ptr);

Erfan-Ahmadi

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

Erfan-Ahmadi

Find:     (\w*).Sample\((\w*)
Replace:  texture(sampler2D($1, $2)

Erfan-Ahmadi

GPU Gems 1 - Chapter 23. Depth of Field: A Survey of Techniques
GPU Gems 2  
GPU Gems 3 - Chapter 28. Practical Post-Process Depth of Field

GPU Pro 1 - Realistic Depth of Field in Post-Production
GPU Pro 2 - Post-Proccessing Effects on Mobile Devices
GPU Pro 3 - 
GPU Pro 4 - Images Space -> First Two Chapters
GPU Pro 5 - 241 - Bokeh Effects on The SPU
GPU Pro 6 - 

Erfan-Ahmadi

//		   .4------5     4------5     4------5     4------5     4------5.
//		 .' |    .'|    /|     /|     |      |     |\     |\    |`.    | `.
//		0---+--1'  |   0-+----1 |     0------1     | 0----+-1   |  `0--+---1
//		|   |  |   |   | |    | |     |      |     | |    | |   |   |  |   |
//		|  ,6--+---7   | 6----+-7     6------7     6-+----7 |   6---+--7   |
//		|.'    | .'    |/     |/      |      |      \|     \|    `. |   `. |
//		2------3'      2------3       2------3       2------3      `2------3

Erfan-Ahmadi

find . -mindepth 1 -maxdepth 2 -type d -print -exec git -C {} pull \;
pause