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Physically Based Rendering // OpenGL Tutorial #43

This video is (hopefully) a gentle introduction to Physically Based Rendering (PBR) using OpenGL. The topic itself is complex and relies on many years of research (by other people ;-) ). I tried to explain the mechanics and give some intuition into why they work this way. Resources: * 'OpenGL Shading Language Cookbook - 3rd Ed' by David Wolff * https://learnopengl.com/PBR/Lighting Timecodes: 0:00 Intro 0:49 What is PBR? 1:56 Simplified PBR equation 2:58 The BRDF 4:25 The Diffuse BRDF 6:47 The Specular BRDF 8:03 The Normal Distribution Function (GGX) 10:26 The Geometry Function (Schlick GGX) 12:11 The Fresnel Function (Schlick approximation) 14:23 Last two pieces of the PBR equation 14:44 Fragment shader code review 17:00 Outro Make sure to watch all the previous tutorials in the "OpenGL For Beginners" playlist at    • OpenGL for Beginners   Please visit https://ogldev.org to see more of my tutorials on modern OpenGL. Link to source: https://github.com/emeiri/ogldev/blob... If you want to get the same version that was used in the video checkout the tag TUT_43_PBR. OpenGL 4.6 specification: https://www.khronos.org/registry/Open... Credits: Images: * kordula vahle from Pixabay (lago federa) * Pau Llopart Cervello from Pixabay (ring) * http://www.codinglabs.net/article_phy... * Clker-Free-Vector-Images from Pixabay * OpenClipart-Vectors from Pixabay * https://blog.selfshadow.com/publicati... * http://www.codinglabs.net/article_phy... * Anja-#pray for ukraine# #helping hands# stop the war from Pixabay Videos: *    • Sansar : Phong Material setup for Ble...   *    • • CryEngine - Physically-Based Render...   *    • PBR texture in Blender | Blender 2.8 ...   *    • Turning Images into PBR materials in ...   Music: "Sweet Heat" from https://tunetank.com/ Feel free to comment below. Email: [email protected] Instagram: @ogldev1 Github: https://github.com/emeiri/ogldev.git Twitter: @ogldev One time donations (Paypal): https://ogldev.org/donate.html Patreon:   / ogldev   Enjoy, Etay Meiri #opengl #ogldev #opengtutorials