timer1

Fullscreen mode

Just press »F« on your keyboard to show your presentation in fullscreen mode. Press the »ESC« key to exit fullscreen mode.

Overview mode

Press "Esc" or "o" keys to toggle the overview mode on and off. While you're in this mode, you can still navigate between slides, as if you were at 1,000 feet above your presentation.


OpenGL


Lesson 1

Author: Egoshkin Danila Igorevich

History

1980

Silicon Graphics (SGI)

Silicon Graphics (SGI)

Its initial market was 3D graphics computer workstations

1993 - Jurassic Park

IRIS GL

IRIS GL (Integrated Raster Imaging System Graphics Library) is a proprietary graphics API created by Silicon Graphics (SGI) in the early 1980s

IRIS GL

Which company has been starting to grow from 1985-1990 - and till now?

1992

IRIS GL -> OpenGL + OpenSource + Best Manual - Лучшая Документация

SGI Massive growth

Ed McCracken was CEO of Silicon Graphics from 1992 to 1997. During those years, SGI grew from annual revenues of $80.4 million to $3.7 billion.
$250.000
SGI Octane 1997...

DirectX VS OpenGL


CPU & GPU

CPU Vs GPU

CPU

f(f(f(f(f(x)))))
( ((1+1)*10)+(10+100) )*1000
tg(cos(sin(x)))

GPU

pixel(x,y) = mesh(x,y) + mesh(x,y).texture(x,y) + ...(x,y);

GPU

pixel(x,y) = mesh(x,y) + mesh(x,y).texture(x,y) + ...(x,y);

CPU & GPU


ALU - arithmetic and logic unit. (h264)
CU - control unit - how to respond to the instructions that have been sent to the processor.

GPU

OpenGL

Interface interaction API

GLUT, FreeGLUT, GLFW

OpenGL Loading Library

GLEW, GLAD, glLoadGen, GLXW, libepoxy
Кодекс - это просто свод указаний, а не жёстких законов.

GLUT, FreeGLUT, GLFW

GLUT - 1998
GLFW - for now

It provides a simple API for:
Creating windows, contexts, reading input, handling events, events of mouse, keyboard, touch and etc.

OpenGL Loading Library

GLEW, GLAD, glLoadGen, GLXW, libepoxy

GLEW - OpenGL Extension Wrangler Library
GLAD - Multi-Language GL/GLES/EGL/GLX/WGL Loader-Generator based on the official specs.

This is a library that loads pointers to OpenGL functions at runtime.
Дело в том, что доступ к функциям OpenGL осуществляется через подгрузку динамических библиотек. На разных платформах эти динамические библиотеки загружаются по-разному, да и находятся в разных местах. Собственно, лоадеры предназначены для того, чтобы скрыть эти различия от программиста.

Windows, Linux, MacOS, Android
PlayStation, XBox, Nintendo, Sega Mega Drive
NVIDIA (ASUS, MSI, ...), AMD Radeon (ASUS, MSI, ...), PowerVR, Mali GPU
https://www.khronos.org/opengl/wiki/OpenGL_Loading_Library 

                            // define the function's prototype
                            typedef void (*GL_GENBUFFERS) (GLsizei, GLuint*);
                            // find the function and assign it to a function pointer
                            GL_GENBUFFERS glGenBuffers  = (GL_GENBUFFERS)wglGetProcAddress("glGenBuffers");
                            // function can now be called as normal
                            unsigned int buffer;
                            glGenBuffers(1, &buffer);

Benefits & Advantages

Benefits & Advantages

1. Base OpenGL knowledge

2. GLSL - high-level shading language

3. Base 3D vfx methods

What for???

AMC Bridge

Black Wing Foundation (REBRANDING - now Pingle Studio)

Pingle Studio (old Black Wing Foundation)

Playtika

Farom Studio


https://faromstudio.com/
Games: Lost Region, ...

Lab Work 1


                            glfwWindowHint(GLFW_SAMPLES, 4); // 4x Сглаживание
                            glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); // Мы хотим использовать OpenGL 3.3
                            glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint - имеет очень простую сигнатуру, первым аргументом необходимо передать идентификатор параметра, который подвергается изменению, а вторым параметром передается значение, которое устанавливается соответствующему параметру. 

                            GLFWwindow * glfwCreateWindow (int width, int height, const char *title, GLFWmonitor *monitor, GLFWwindow *share)
                        

                            GLFWwindow* window; // (В сопроводительном исходном коде эта переменная является глобальной)
                            window = glfwCreateWindow( 640, 480, "Lesson 01", NULL, NULL);
                        

                            glfwTerminate();
Thanks for your attention :)