Doesn't work Creating a Custom Shader for Post-Processing

[boltut]

SDK version: 2.10.0.2

I try to use code from this article: https://developer.unigine.com/ru/docs/2.10/code/uusl/create_post?rlang=cpp

Shader console output from editor:

Quote

Shaders compile: 0 (0s)
Render::getMaterial(): can't find "custo" material
Failed to compile fragment shader: shaders/fragment/post.frag
Compilation log:
  0(3273) : error C1503: undefined variable "FLOAT3"
  glsl 3273: vec3 gray_scene_color = FLOAT3(dot(vec3(0.3, 0.59, 0.11), scene_color.rgb));
  0(3274) : error C1503: undefined variable "FLOAT3"
  glsl 3274: scene_color.rgb = mix(scene_color.rgb, gray_scene_color, FLOAT3(grayscale_power));

Material::create_shader(): can't compile pass:"post" material:"custom_post"

I change FLOAT3 to float3, but it doesn't help. Error disappears, but shader still don't work.

What should I do to use code from this tutorial?

Also, where can I see working samples with post-processing shaders for sdk 2.10.0.2?

My final goal - adapt material "compass_mat.basement" from demo "mars" from sdk version 2.16 to using in project with sdk version 2.10.0.2

Thanks!

Edited November 26, 2022 by boltut

[fox]

Hi, boltut!

Seems like code snippets in this article had a couple of problems during the migration process. To make this example work simply make the following changes:

1. In the custom_post material source code

   Replace this line:

   <parameter name="grayscale_power" type="slider" shared="1" min="0.0" max="1.0" flags="max_expand">0.5</parameter>

   With this one:

   <slider name="grayscale_power" shared="1" min="0.0" max="1.0" flags="max_expand">0.5</slider>

    

2. In the post.frag fragment shader code 

   Replace these lines:

   float3 gray_scene_color = FLOAT3(dot(float3(0.3f, 0.59f, 0.11f), scene_color.rgb));
   scene_color.rgb = lerp(scene_color.rgb,gray_scene_color,FLOAT3(grayscale_power));

   With the following ones:

   float3 gray_scene_color = dot(float3(0.3f, 0.59f, 0.11f), scene_color.rgb);
   scene_color.rgb = lerp(scene_color.rgb,gray_scene_color,grayscale_power);

    

This should make the sample work.

We've also fixed these samples in the Docs, the updated versions are available in Docs 2.10,

We're sorry for the inconvenience caused. Hope this helps.

[boltut]

Thanks, I will try!