Introduction To Tessellation // OpenGL Tutorial #47

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In this video we use the Tessellation feature in OpenGL 4.0 in order to render a Cubic Bezier Curve.
This video is based on the "OpenGL 4 Shading Language Cookbook" 3rd edition by David Wolff (pages: 299-305).
Timecodes:
00:00 Intro
01:03 Overview
02:30 The Patch
03:58 The role of the Vertex Shader
04:39 Tessellation Control Shader
06:30 The Tessellator (TPG)
08:07 Tessellation Evaluation Shader
09:15 Creating a Bezier Curve
12:27 Code review
16:14 Outro
Make sure to watch all the previous tutorials in the "OpenGL For Beginners" playlist at • OpenGL for Beginners
Please visit ogldev.org to see more of my tutorials on modern OpenGL.
Link to source: github.com/emeiri/ogldev/blob...
If you want to get the same version of the code that was used in the video checkout the tag 'TUT_47_BEZIER_CURVE'
OpenGL 4.6 specification: www.khronos.org/registry/Open...
Feel free to comment below.
Email: ogldev1@gmail.com
Instagram: @ogldev1
Github: github.com/emeiri/ogldev.git
Twitter: @ogldev
One time donations (Paypal): ogldev.org/donate.html
Patreon: / ogldev
Credits:
Images:
* By Maurizio Pesce from Milan, Italia - Elon Musk, Tesla Factory, Fremont (CA, USA), CC BY 2.0, commons.wikimedia.org/w/index...
* Mr Beast - en.wikipedia.org/wiki/MrBeast...
* The Terminator by Gerhard Janson from Pixabay
* NVIDIA by Nana Dua from Pixabay
* Smartphone by 巻（Maki) from Pixabay
* Renault Logos from logowik.com
* Renault by Günther Schneider from Pixabay
* Renault by Emslichter from Pixabay
Videos:
* Circuit board by Tomislav Jakupec from Pixabay
* Blending functions by William McDonald from Pixabay
Music:
* Track: Calypso - Next Route [Audio Library Release]
Music provided by Audio Library Plus
Watch: bit.ly/3RSDTNI
Free Download / Stream: alplus.io/calypso
* Sound effects from zapsplat.com
Enjoy,
Etay Meiri
#opengl #ogldev #opengtutorials

Опубликовано:

23 июл 2024

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Комментарии : 13

@OGLDEV 8 месяцев назад

Clone the sources: git clone --recurse-submodules github.com/emeiri/ogldev.git If you want to get the same version that was used in the video you can checkout the tag 'TUT_47_BEZIER_CURVE'. Build on Windows: Open the Visual Studio solution: ogldev\Windows\ogldev_vs_2022\ogldev_vs_2022.sln Build the project 'OpenGL Tutorials\Tutorial47_2DTess'

@ph4nt0m33 9 месяцев назад

I really love that you care to turn these topics into easily digestible video format. looking forward to next videos!

@OGLDEV 9 месяцев назад

Thanks! Please send me your email to get a supporter perk (my email is in the vid desc).

@ph4nt0m33 9 месяцев назад

Thanks I sent it :)

@kgnet8831 9 месяцев назад

TOP Video 👏👍 (as was to expected^^). Please do more Tessalation (especially with tries / quads). In the meantime I will try to add this to my vulkan playground 🙂.

@OGLDEV 9 месяцев назад

Thanks! Will do! They will probably be interleaved with other material as well.

@kepcukhusamettin9400 9 месяцев назад

Thanks!

@OGLDEV 9 месяцев назад

Welcome!

@topg3067 8 месяцев назад

your videos are great. I would love a tutorial on lighting that looks good. Some kind of global illumination.

@OGLDEV 8 месяцев назад

I hope to do a video on that sometime in the future. Please note that global illumination is kind of an umbrella term for a group of algorithms. I do have an article on my website about ambient occlusion.

@topg3067 8 месяцев назад

@@OGLDEV I think its a good tutorial to make as there are not many resources on the internet for it. Especially compute shaders and tracing etc. Hope you will do it one day!

@Test-iv4pm 28 дней назад

Is the idea with terrain that the entire terrain is a quad of just 4 vertices, and then the tessellation shader will add new subdivisions to the quad depending on the camera's position?

@OGLDEV 27 дней назад

A single quad for the entire terrain might be a bit limiting and if the terrain is large it may not be enough, even on a high tessellation level. So you should tune the size of the patch and the number of patches to get a nice resolution decline from the position of the camera down to the horizon.