Introduction to Phong Lighting

In this GLSL shader tutorial, we will go over the basics of Phong lighting. We start off by understanding the importance of lighting in computer graphics. Then we will look at the intuition behind the Phong lighting equation. Finally, we add ambient, diffuse, and specular lighting to our GLSL fragment shader.

== [ Resources ] ==

== [ Timestamps ] ==
00:00 Intro to GLSL Shaders
01:12 What is Phong Lighting?
01:45 Ambient vs Diffuse vs Specular
03:02 Ambient Lighting
04:16 Diffuse Lighting
05:57 Specular Lighting
08:26 Phong Lighting Demos

== [ Tags ] ==
#suboptimal #glsl #shaders

[justanotherhotguy]

Tomorrow exam in real time computer graphics, thank you very much!

[AstrusHD]

Honestly, i think your teaching style is awesome, everything was so clear and understandable. This is awesome man!

[Byynx]

It seems the best lightning tutorial so far.

[Iridium.]

You can use a halfway vector instead of reflect for better performance

[stoup]

dude i have not been able to process the learnopengl tutorials on this topic, this made it so much easier to understand!

[JackLeiLing]

Liked and subscribed! The most clearer explanation for this difficult topic. Super helpful. Many thanks

[glebaltfromrovia]

insanely simple and straight to the point! thanks

[pingwinek_]

your voice is so soothing oh my gawddd

[ksalarang]

Exactly what I was looking for, thanks. Keep up the good work

[online.python.dersim]

Thank you very clear simple but enough detailed explanation especially graphics of the calculations are very useful thank you again for this great video

[thesituation]

Hi. I've been trying to learn how lighting works, and I'm having a really hard time with this. I understand the base of the whole idea, but the part I'm having a hard time with is how to make it work in 2D. I was wondering if you know how to port it to two dimensions? I can't really find anything online specifically regarding 2D phong shading.

[janreinsch]

So, what I found confusing is that the vector is named lightSource... Isn't this actually the lightDirection and the lightSource is at a point infinitely far away, so that all light rays hit the scene at the same angle?

[irice]

awesome video. also, what theme did you use for vscode?

[EliasWolfy]

kind of off topic, but what theme do you use?

[MrMariozzz]

i use opegl in dev c++ gl library i guess it pre 2.0 so it dont use GLSL ...can i use phong light with 2.0 pre.version?

[MichaelPohoreski]

1:23 Phong lighting _hasn’t_ been common for the past decade. The problem with Phong is that it isn’t energy preserving.

Using a physically correct BRDF replaced it.

[nexusplus]

Hi when I import model in three js. model load with light what should I do??

[diddy_dante]

If fragment shaders work on a pixel by pixel basis, does the rasterizer also give eye-direction vector values for each pixel? I can't understand how else you could pull off specular lighting.

[javifontalva]

Wonderful vid!! Can you make more vida on shaders?

[kevinto]

Yes more shaders! Curious, what was your roadmap for learning all this? I'm reading through the book of shaders, but once I'm off it, I feel totally lost :(