GLSL and Irrlicht Ambient color lighting.

[arras]

I don't know but by running this simple shader I have found that it is some value close but not equal to 0.0 on my system. So it probably can't serve purpose of determining if fog is on or off.

Code: Select all

void main()
{
   gl_Position = ftransform();

   gl_FrontColor = vec4(1,1,1,1);
   if(gl_Fog.scale < 0.0) gl_FrontColor = vec4(0,0,1,1);
   if(gl_Fog.scale == 0.0) gl_FrontColor = vec4(1,0,0,1);
   if(gl_Fog.scale < 0.03) gl_FrontColor = vec4(0,1,0,1);
}

[dlangdev]

I took a screenie of the spotlight program.