- Qt 6.7
- Qt Quick 3D
- Qt Quick 3D Examples and Tutorials
- Qt Quick 3D - Custom Materials Example
- Qt Quick 3D | Commercial or GPLv3

# Qt Quick 3D - Custom Materials Example

     void MAIN()
     {
         vec2 size = vec2(textureSize(SCREEN_TEXTURE, 0));
         vec2 uv = FRAGCOORD.xy / size;

         vec2 d = vec2(1.0 / size.x, 1.0 / size.y);
         vec4 diff = texture(SCREEN_TEXTURE, uv + d) - texture(SCREEN_TEXTURE, uv - d);
         float c = (diff.x + diff.y + diff.z) + 0.5;

         float alpha = 1.0;
         if (uKeepAlpha)
             alpha = texture(SCREEN_TEXTURE, uv).a;

         BASE_COLOR = vec4(vec3(c), alpha);
     }