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Konstantstromquelle

Konstantstromquelle fuer Power LED

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Transistoren/MOSFETs als Schalter

Add C and C++ code to your project

Get started with the NDK

- Maxwell’s equation
- Geometrical optics
- Interference
- Diffraction
- Fresnel’s equation
- Group velocity
- Group index
- Quantum mechanical concepts

- Vectors
- Complex numbers
- Partial differentiation
- Fourier transforms

- Wave theory
- Particle theory

- light
- Wave theory: wave => interference, diffraction
- Particle theory: photon

- Electric field Ex
- Magnetic field By
- Electromagnetic wave
- traveling wave
- time varying
- perpendicular to each other and the direction of propagation: z
- position z
- time t
- propagation constant, wave number k (2*pi/lambda)
- wavelength lambda
- angular frequency omega
- wave amplitude E0
- Phase constant phi0
- Argument (omega*t – k*z + phi0) => phase phi
- Monochromatic plane wave
- wavefront
- Faraday’s law: time varying magnetic field results in time varying electric fields and vice versa
- optical field

raytracing.github.io/

github.com/RayTracing/raytracing.github.io

Ray Tracing in One Weekend

Ray Tracing: The Next Week

Ray Tracing: The Rest of Your Life

- eye / camera
- image
- 16:9 aspect ratio
- viewport =
- viewport’s aspect ratio == rendered image aspect ratio
- viewport: 2 units in height
- projection plane
- projection point
- distance between plane and point: 1 unit = focal length

difference between global operator and member operator

Ray-triangle intersection (PDF)

Fast Minimum Storage Ray-Triangle Intersection

How to get the intersection point? Ray Triangle Intersection C++

WebGL 2.0 : 044 : Ray to Triangle Intersection

github.com/nothings/stb, stb single-file public domain libraries for C/C++

Markdeep

OpenGL Loading Library

An OpenGL Loading Library is a library that loads pointers to OpenGL functions at runtime, core as well as extensions. This is required to access functions from OpenGL versions above 1.1 on most platforms.

- GLEW (OpenGL Extension Wrangler)
- GL3W
- Galogen
- glad (Multi-Language GL/GLES/EGL/GLX/WGL Loader-Generator)
- Glatter
- glsdk (Unofficial OpenGL SDK)
- glbinding (C++)
- libepoxy
- GLee

GLFW, GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan development on the desktop

GLUT (GL Utility Toolkit)

What is the difference between FreeGLUT vs GLFW?

WGSL, WebGPU Shading Language

The OpenGL Utility Toolkit (GLUT) Programming Interface API Version 3

7 Callback Registration

Learn Computer Graphics From Scratch!

The Perspective and Orthographic Projection Matrix

Ray Tracing: Rendering a Triangle – Why Are Triangles Useful?

Ray Tracing: Rendering a Triangle – Ray-Triangle Intersection: Geometric Solution

A Minimal Ray-Tracer: Rendering Simple Shapes – Ray-Sphere Intersection

Rasterization: a Practical Implementation

- The Rasterization Algorithm
- Optimizing: 2D Triangles Bounding Box
- When Two Triangles Overlap the Same Pixel: The Depth Buffer (or Z-Buffer)

Chapter 1: Getting Started

github.com/openglbook/openglbook.com

HTML Canvas Graphics

HTML Canvas Reference

Einführung in WebGL

HTMLCanvasElement.getContext()

CanvasRenderingContext2D

Canvas tutorial

Evaluating Different Spatial Anti Aliasing Techniques

Kantenglättung Anti-Aliasing erklärt – Guide: Wie funktionieren MSAA, TXAA und Co.?

Best Anti-Aliasing | Different Techniques to Get Clear Images

What is Anti-Aliasing: A definitive guide

PC Graphics Settings Explained: MLAA vs MSAA vs FXAA vs TAA vs SMAA

github.com/GPSnoopy/RayTracingInVulkan, Implementation of Peter Shirley’s Ray Tracing In One Weekend book using Vulkan and NVIDIA’s RTX extension.

nvpro-samples.github.io/vk_mini_path_tracer/

nvpro-samples.github.io/vk_raytracing_tutorial_KHR/

github.com/nvpro-samples/vk_denoise, Denoising a Vulkan ray traced image using OptiX denoiser

github.com/nvpro-samples/vk_raytrace, Ray tracing glTF scene with Vulkan

github.com/nvpro-samples/vk_raytracing_tutorial_NV, Vulkan ray tracing examples and tutorials using VK_NV_ray_tracing

github.com/andrejnau/FlyCube, Graphics API wrapper is written in C++ on top of Directx 12 and Vulkan. Provides main features including ray tracing.

github.com/cg-tuwien/Gears-Vk, Powerful low-level C++20 rendering framework for Vulkan 1.2, including Real-Time Ray Tracing (RTX) support, built atop Auto-Vk.

github.com/cg-tuwien/Auto-Vk, Low-level convenience and productivity layer atop Vulkan-Hpp

Qt Graphics

github.com/KhronosGroup/Vulkan-Guide/blob/master/chapters/wsi.md

Introducing the Vulkan WSI Layer (PDF)

github.com/carl-vbn/pure-java-raytracer

github.com/carl-vbn/opengl-raytracing

Making a 3D Gravity Simulator with OpenGL (Part 1)

Adding Camera movement and User Interface to my 3D Gravity Simulator

github.com/carl-vbn/opengl-gravity-simulator

carl-vbn.dev

LinkedIn: Carl von Bonin

The First 3 Months Developing My VOXEL RAYTRACING Engine

github.com/frozein/DoonEngine

Anton’s OpenGL 4 Tutorials

github.com/capnramses/antons_opengl_tutorials_book/

github.com/capnramses/antons_opengl_tutorials_book/tree/master/06_vcam_with_quaternion

github.com/AidanDelaney/antons_opengl_tutorials_book/tree/sdl2-port/

Foundations of Game Engine Development

Foundations of Game Engine Development: Figures

Vulkan (c++) Game Engine Tutorials

GDC 2018 – Getting explicit: How Hard is Vulkan really?

What Is Vulkan & Why Should Gamers CARE?

DirectX 12 & Vulkan as Fast As Possible

DCS: What is Vulkan API?

Vulkan vs OpenGL | Getting into Computer Graphics | OpenGL CUDA Interop | Cuda Education

What is Vulkan?

Should you learn Vulkan(C++)? Can beginners learn it?

Vulkan Tutorials [Deutsch]

OpenGL vs Vulkan

Open GL (Default) VS Open GL (Skia) VS Vulkan (Skia) Antutu Benchmark

XDC 2019 | Introducing the Vulkan WSI Layer – Rosen Zhelev

Intro To Modern OpenGL Tutorial (2014)

What is a Graphics Pipeline? Featuring DirectX 11

hat is a Shader? | Pixel and Vertex Shaders

What Are Shaders?

Writing a Shader in OpenGL

How Shaders Work in OpenGL

Vertex and Fragment Shaders – Interactive 3D Graphics

What Is A Shader? UE4 Materials 101 – Episode 1

1. What is a shader? What is GLSL? Why are they useful in games – Shader Course

Shaders 101 – Intro to Shaders

Shader Basics, Blending & Textures • Shaders for Game Devs [Part 1] (Unity)

Computer Graphics 2.7: Aliasing and Anti aliasing Techniques

Antialiasing – Interactive 3D Graphics

Fun With WebGL 2.0

WebGL 2.0 : 044 : Ray to Triangle Intersection

RuhrJS 2018 – Martin Splitt – Creative experiments with WebGL shaders in JavaScript

Intro To Modern OpenGL Tutorial (Playlist)

Building Collision Simulations: An Introduction to Computer Graphics

OpenGL (Playlist), last update 2020

Welcome to OpenGL

Vertex Buffers and Drawing a Triangle in OpenGL

ImGui in OpenGL

OpenGL Course – Create 3D and 2D Graphics With C++

Planet Vulkan (Playlist)

Episode 7.5 – Graphics Pipeline Overview

I created my own Ray Tracing Engine from scratch

Building a Ray Tracer in Python – Part 1 (Points in 3D Space)

Radiometry and Reflectance | Photometric Stereo | Shape from Shading (Playlist)

Introduction to OpenGLES and GLSL programming

NOT in this talk:

- Clipping
- Vendor Extensions
- Geometry Shaders
- Lightning
- Stencils
- Framebuffer Objects
- Culling
- Framerate
- Tesselation Shaders
- Quaternions
- Shading
- Blending

OpenGL

- API for rendering 2D and 3D Computer Graphics
- Developed by SGI in 1992
- Open Standard, now maintained by Khronos Group consortium
- Used in CAD, Games, VR/AR, etc…

OpenGL ES

- OpenGL for Embedded Systems
- Implementations by nvidia, AMD, etc.
- Available on Windows, MacOSX, Linux, iOS, Android, etc.
- Bindings for C, C++, Java, C#, Python, Ruby, Go, etc.
- Latest version OpenGL ES 3.2 (2019)
- … but anything from OpenGL ES 2.0 onwards is cool!

EGL

- Native Platform Interface
- Creates & Configures OpenGL ES Context (view/window/fullscreen)
- Your platform might come with something else (Mesa, WGL, CGL, GLX, etc.)

Rasterizer

- Describe our geomentry in world coordinates (3D)
- Rasterizer projects it onto a projection plane (2D) => your screen
- Geometry in projection plane are now called fragments
- For each of the triangles, we figure out how we wan to color them
- If we have a triangle on that surface with 3 colors, the rasterizer will interpolate the values between the colors (pixel by pixel)
- Vertex- and Fragment-Shader go the projection and the texture mapping
- When you render a scene, the vertex shader is responsible for taking all your geometry and transforms/moves/scales it. Then it’s passed to the Rasterizer stage that does the real projection, figuring out which vertices end up on the 2D surface (plane) => output: fragments.

GLSL Shader Language

- C-like syntax
- Vector and Matrix types (float, vec2, vec3, vec4, mat4, etc.)
- Built-in math functions (sin, cos, exp, sqrt, dot, cross, etc.)
- No recursion
- Limited loops

Vertex Shader

- Runs once for each vertex of each triangle of the geometry
- Get per-vertex input from
`attribute`

- Global parameters: get parameters from
`uniform`

: projection from camera - Pass output to fragment shader in
`varying`

- Pass position vector to rasierizer pipeline in
`gl_Position`

(magic variable)

Fragment Shader

- Runs once for each fragment of each rasterized triangle
- Sets the final color for each fragment
- Get per-vertex input from
`varying`

- Get parameters from
`uniform`

: get texture data from`uniform sample2D`

- Pass color vector to fragment pipeline in
`gl_FragColor`

Math

- Vectors describe coordinates
- Matrices describe transformations

Vector Operations

- Scalar Multiplication / dot-product:
`alpha = acos(dot(u,v))`

- Vector Multiplication / cross-product: n = cross(u,v)

Transformation Matrices

- Translate
- Rotate
- Scale

Projection Matrix (perspective vs. orthographic)

Matrix Operations

- Multiplication of a vector with a matrix: transformed vector
- Multiplication of a matric with a matrix: chained transformation

github.com/neiser/PiGLET, Raspberry PI OpenGL Epics Toolkit

Experimental Physics and

Industrial Control System, EPICS Home at Argonne

EPICS – Experimental Physics and Industrial Control System

github.com/amengede/getIntoGameDev

OpenGL with C++ (Playlist)

Vulkan with C++ (Playlist)

OpenGL with Python (Playlist)

OpenGL with Python – Vertex Buffer Objects and Vertex Array Objects

OGLdev – Modern OpenGL Tutorials

- World Coordinate System
- Local Coordinate System
- Object Coordinate System
- Object Space

- View Transformation
- Camera Transformation
- Eye Transformation

- Camera Coordinate System
- View Coordinate System
- Camera Space
- View Space
- Eye Space

- Perspective Projection
- Perspective Projection Matrix
- = Clip Coordinate System
- = Clip Space

- Perspective Division
- Range -1 ro +1 on all axes
- = Normalized Device Coordinates (NDC)

- Viewport Transformation
- = Window coordinates (ex. 1920 x 1080)

- Multiply all matrices to a single matrix
- = WVP / MVP

- UVN camera
- Location / Position (x, y, z)
- Orientation in UVN axis system
- N vector = eye to world
- V vector = up-vector/li>
- U vector = right-vector/li>

OpenGL Screencasts and Tutorials

How to Code Minecraft (GLFW & Glad)

github.com/codingminecraft/MinecraftCloneForYoutube

github.com/codingminecraft/StreamMinecraftClone

Quaternion Camera Demo – (C++, OpenGL)

Shadow Mapping Demo

GPU Smoke Simulations

LinkedIn Dustin Biser

github.com/dustin-biser/Rigid3D (Arcball)

OpenGL Tutorials, 13.08.2021 (Playlist)

LinkedIn Victor Gordan

github.com/VictorGordan/opengl-tutorials

C++ OpenGL Tutorial (Playlist)

2D Pong (C++ OpenGL) (Playlist)

michaelg29.github.io

github.com/michaelg29/glpong

github.com/michaelg29/yt-tutorials

github.com/michaelg29/yt-tutorials/tree/master/CPP/OpenGL/OpenGLTutorial

LinkedIn Michael Grieco

Introduction to perspective projection

github.com/BuildSucceeded/3D-Game-Engine

Math for Game Developers: Perspective Projection Matrix

Projection in Computer Graphics

How to make a 3D projection in Python | Rendering a cube in 2D! (No OpenGL)

github.com/Magoninho/3D-projection-tutorial

Parallelizing GPU-intensive Workloads via Multi-Queue Operations using Kompute & Vulkan

GPU computing in Vulkan, The ultimate way to parallel computing using Vulkan API.

Learn the Vulkan API with C++, Learn the fundamentals of the popular Vulkan API for modern graphics rendering using C++!

TBN matrix

- Tangent,
- Bitangent and
- Normal vector

1>OpenGLBook_Chapter1.obj : error LNK2001: unresolved external symbol __imp__glewGetErrorString@4 1>OpenGLBook_Chapter1.obj : error LNK2001: unresolved external symbol __imp__glewInit@0 1>C:\Users\bacr\source\repos\FreeGLUT_example2\Release\FreeGLUT_example2.exe : fatal error LNK1120: 2 unresolved externals #define GLEW_STATIC 1>OpenGLBook_Chapter1.obj : error LNK2001: unresolved external symbol _glewGetErrorString@4 1>OpenGLBook_Chapter1.obj : error LNK2001: unresolved external symbol _glewInit@0 1>C:\Users\bacr\source\repos\FreeGLUT_example2\Release\FreeGLUT_example2.exe : fatal error LNK1120: 2 unresolved externals >dumpbin -headers glew-2.1.0\lib\Release\Win32\glew32.lib | findstr /c:" Symbol name : _glewInit" Symbol name : _glewInit@0

Tools for inspecting .lib files?

Problems with glew library and glewinit() function

About the use of glew library (unresolved external symbol __imp__glewInit @ 0)

Glew in VS 2010: unresolved external symbol __imp__glewInit

OpenGL: How to compile glew32.dll from source file

Build started... 1>------ Build started: Project: FreeGLUT_example2, Configuration: Release Win32 ------ 1>main.cpp 1>OpenGLBook_Chapter1.cpp 1>tutorial01.cpp 1>Generating code 1>Previous IPDB not found, fall back to full compilation. 1>All 16 functions were compiled because no usable IPDB/IOBJ from previous compilation was found. 1>Finished generating code 1>FreeGLUT_example2.vcxproj -> C:\Users\bacr\source\repos\FreeGLUT_example2\Release\FreeGLUT_example2.exe 1> 1 Datei(en) kopiert. 1> 1 Datei(en) kopiert. ========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

io7m-r1 0.10.0 Documentation

Normal Mapping

github.com/io7m/r1

com.io7m.r2 0.3.0-SNAPSHOT Documentation

github.com/io7m/r2, Aggressively minimalist deferred renderer

Kategorie:Bildsynthese

Framebuffer Object (FBO)

Vertex Buffer Object (VBO)

Immediate Mode

Retained Mode

Z-Buffering (auch Depth Buffering, Tiefenpuffer)

Rasterung von Polygonen

Retained Mode Versus Immediate Mode

gluPerspective — set up a perspective projection matrix

gluLookAt — define a viewing transformation

docs.GL (only OpenGL, no utility functions!)

OpenGL Programming/Modern OpenGL Tutorial Arcball

How to implement a simple Arcball Camera

Arcball Controller

User controlled rotation with arcBall

arcball controls with Qt, and OpenGL

OpenGL: Tutorial 8 – ArcBall

Tutorial: OpenGL

github.com/mariokonrad/qtnavigator

github.com/Jokymon/qtnavigator

github.com/mariokonrad/glua

C# vs. OpenGL (Tao.Framework) – Arcball Rotation with zoom and pan

OpenGL Arcball Test

Arcball Test in C++ and OpenGL with a custom math library

FocalLength to Fov formula in OpenGl

How to set focal length in OpenGL^_^

is focal length equal to the distance from the optical center to the near clipping plane- openGL

P2 vs projection plane

Dyson V11/V10 – How to fix trigger problem (trigger broken, gâchette cassé)

How to replace a Dyson V11 Trigger! 3d Printed Trigger is BETTER than the original?

Dyson V11 Absolute – Broken again! Trigger Problems.

Dyson V11 Pro broken Schalterwechsel Drücker defekt Dyson V11 häufigster Defekt

Fujitsu LIFEBOOK U7511 i5 16/512GB NB

Lenovo ThinkPad T15 i5 16/256 GB

HP EliteBook 850 G8 i5 16/512 GB

Dell Preci 3561/i9-11950H/16GB/512GB

Lenovo ThinkPad P15s Gen 2

Notebook ThinkPad P15s Gen. 2 (Intel) LTE

Notebook ThinkPad P15s Gen. 2 (Intel)

ThinkPad P1 Gen 3

EliteBook 840 G8 358R5EA

Notebook Latitude 9420-1R1VD

Notebook Latitude 5420-FXD04

Lenovo ThinkPad P15s G2 i7 16/512GB Top

Lenovo ThinkPad P15s G2 i7 1TB 4K Top

C++ OpenCV 2.4.11: List all cameras

Add API to enumerate cameras #4269

github.com/andreaschiavinato/python_grabber

Capturing Images from Camera using Python and DirectShow

List Capture Devices for Python OpenCV on Windows

What ctypes types to use with WORD and DWORD definitions

import numpy as np import cv2 def show_pic(): i: int = 0 while True: cap = cv2.VideoCapture(i) if not cap.isOpened(): print(f"Cannot open camera {i}") else: while True: ret, frame = cap.read() if not ret: print(f"Can't receive frame (stream end?) from camera {i}. Exiting ...") break else: print(f"Frame receive from camera {i}") break cap.release() i += 1 if i > 20: break if __name__ == '__main__': show_pic()

Cannot open camera 0 Cannot open camera 1 Cannot open camera 2 Cannot open camera 3 Cannot open camera 4 Cannot open camera 5 Cannot open camera 6 Cannot open camera 7 Cannot open camera 8 Frame receive from camera 9 Cannot open camera 10 Cannot open camera 11 Cannot open camera 12 Cannot open camera 13 Frame receive from camera 14 Cannot open camera 15 Cannot open camera 16 Cannot open camera 17 Cannot open camera 18 Cannot open camera 19 Cannot open camera 20

[ 0: 'ScopeTek DCM130BW', 1: 'ScopeTek DCM130E', 2: 'ScopeTek DCM200', 3: 'ScopeTek DCM310', 4: 'ScopeTek DCM35E', 5: 'ScopeTek DCM500', 6: 'ScopeTek DCM500BW', 7: 'ScopeTek DCM510', 8: 'ScopeTek DCM800', 9: 'ScopeTek DCM900', 10: 'ScopeTek MDC140BW', 11: 'ScopeTek MDC200', 12: 'ScopeTek MDC320', 13: 'ScopeTek MDC560', 14: 'OBS Virtual Camera' ]

idVendor=0547 idProduct=4d90 0547 Anchor Chips, Inc. 4d90 AmScope MD1900 camera

usb.ids

microscope:start

AmScope/TopuTek/ScopeTek does provide libusb drivers though, so you could make a custom application.

github.com/JohnDMcMaster/uvscada/

python v4l2 webcam capture test

Linux Video4Linux2 API (v4l2)

How to get a list of video capture devices (web cameras) on linux ( ubuntu )? (C/C++)

How to Capture Frames from Camera with OpenCV in Python

conda install -c conda-forge keyboard

anaconda.org/cogsci/pygame

anaconda.org/jiayi_anaconda/pygame

Installation of pygame with Anaconda

Conda Support for 1.9.6 and 2.0.0.dev10 #1953

python -m pip install -U pygame --user python -m pip uninstall pygame

What is vpopmail?

Wikipedia: vpopmail

VPopMail

Dovecot vpopmail-auth driver removal. Migrating to the SQL driver

# make clean && make rmconfig ===> Cleaning for dovecot-2.3.15 ===> No user-specified options configured for dovecot-2.3.15