Green screen shader

[TEDERIs]

What about the post-processing? It is possible to color some object with world-shader and then just cut off all the rest by post-processing. Or use the depth buffer to remove a background.

[Dzsozi (h03)]

14 hours ago, TEDERIs said:

What about the post-processing? It is possible to color some object with world-shader and then just cut off all the rest by post-processing. Or use the depth buffer to remove a background.

And how do I do that? I don't know.

[TEDERIs]

15 hours ago, Dzsozi (h03) said:

And how do I do that? I don't know.

Just use the code above to render your object with any contrast color. Then write simple post-processing shader, that finds the contrast color, converts it to black-n-white and delimits your object from a background. In case of the depth buffer, you might use the example from wiki . It probably also will require hiding of all world objects. For this is possible to use vertex shader that moves all vertices far away.

By the way, a sample of the second approach you can watch here

Edited May 26, 2018 by TEDERIs
Additional info

[Dzsozi (h03)]

17 hours ago, TEDERIs said:

Just use the code above to render your object with any contrast color. Then write simple post-processing shader, that finds the contrast color, converts it to black-n-white and delimits your object from a background. In case of the depth buffer, you might use the example from wiki . It probably also will require hiding of all world objects. For this is possible to use vertex shader that moves all vertices far away.

By the way, a sample of the second approach you can watch here

I do not know how to write shader files.

[TEDERIs]

On 27.05.2018 at 06:13, Dzsozi (h03) said:

I do not know how to write shader files.

So, I have released the resource from the video. There is a complex login system that includes the logo, rain rendering, and custom UI example. I hope it helps you.

https://github.com/tederis/mta-resources/tree/master/sp_login

[Ren_712]

On 25.05.2018 at 01:50, TEDERIs said:

What about the post-processing? It is possible to color some object with world-shader and then just cut off all the rest by post-processing. Or use the depth buffer to remove a background.

You can render the object to render target and the modify output as you want. Example in the link: 
https://bugs.mtasa.com/view.php?id=8769