Shader Case Study - Glowing Object Outlines

[roelzwakman]

I've been dissecting your videos piece-by-piece to learn how to program shaders for school. One of the objectives I set for myself was writing an outline shader. This will help me so, so much! Obviously won't just copy it one-on-one, but your videos are so, SO helpful to me that this will make my life a lot easier! Thanks a lot!

[marshallparsons]

This is one of my favorite channels on YouTube right now, so glad to see you back.
As someone else who works in games as a contractor (and also has a Unity-centric tutorial channel), totally understand the hiatus. Keep up the great work dude. = )

[TheBirdBag]

Probably the best resource for writing shaders out there. Thank you for making these.

[BastienGIAFFERI]

Excellent content, as always. Glad you're back !

[ryanfranks]

Wow amazing, a whole new dimension of programming to explore. The past 2 years I've been working in C#, never really dove deep into shaders, dude great video.

[amarinofranca]

Good to know you're back! Amazing videos man.

[joshuastein]

Thank you so much. This is a really usefull tutorial! The technique solves so many problems i had, like outlines etc.

[poalman]

Awesome good to see you back, I was getting the junkie itch :) This was the missing step in the Xray video- happy to see it get covered!

[cookiec]

YAY! excited to have more in this series

[slimabob]

Yesss! Was hoping you'd make a video on this!

[mkowalik]

God damn! I hit the shader tutorial jackpot!!! You should start naming your tutorials with the keywords: Unity, Tutorial. Because when I look for shader tutorials I search, and probably many others also, along the lines of "Unity Shader Tutorial." Your videos for some reason never come up in a search. The only reason I found out about your channel was from someone I am working along side with. Anyways...Great videos!

[gokunorris]

omg thank you so much. I have been wondering how to do this for weeks!

[CobaltHex]

It seems like this could be simplified a bit. You could probably render your blurred geometry to a separate buffer as normal. Draw the rest of the scene as normal and then render the glowing objects as a blurred effect on top of that. Then finally render the that buffer again (non-blurred) on top of that a third time. This eliminates a buffer and a shader step. You could probably also use the depth buffer to handle the overglow effects (4:30) -- also if you still wanted the cutouts you could use a stencil buffer on that first glow-object render (but you probably won't be able to get that inner shadow effect).

[rodolforubens]

I'm loving this channel! Btw, can you make a video about objects getting transparent when too close to the camera using a dithering effect?

[timbarrett]

Wow, this is awesome! Thank you so much!

[Eudaimonium]

Wow, thanks so much for the video and a free example project!

This is exactly what I was looking for, I was about to use the stencil buffer for masking out the object silhouette, didn't even think to use the original rendered color!

I hate stencil buffer in Unity's shader syntax. It's beyond incomprehensible.

[Tommyhillpicker]

Hey! Really awesome video, it has been helping me a ton with some of the custom shaders I have been writing for my own game.

I wanted to ask how you think you would change the project if you wanted the Intensity factor to be object-specific, rather than being a global multiplier attached to the Main Camera.

Thanks for your effort, anxiously looking forward to the next video!

[CodyD]

awesome video dude! you should do one on subsurface scattering. i dont know if unity has it yet tho. but im always fascinated by it when you can see it with glowing metal.

[andrea_benedetti]

Have you a suggestion on how to achieve the occlusion of the outline if an object is in front of the outlined one?

[psinjo]

I would really like to see a detailed look into cell shading and how that can be done/used please ^_^