View Full Version : directional light specular

04-30-2010, 09:42 PM
I have suspect that there might be something wrong with my perpixel/normal map specular implementation .

Is it normal to not see any specular highlight on the floor when light is behind the camera (both directional and point) ?

I only saw specular on the floor when camera is facing the light.

The thing is I tr

05-01-2010, 04:00 AM
You message was cut short, but if your normal map is too flat, it is possible. If your normal map is very dented though, it probably means there is a indeed problem with you implementation.

05-01-2010, 07:38 AM
What about standard per pixel lighting (not using normal map/totally flat floor) ?

May be I should try to compare the result with fixed function but I already forgot most of the fixed function programming.

Actually I am implementing water surface (still only freshnel and specular) and can only get specular on the water surface when light is in front of the camera only.

Rosario Leonardi
05-05-2010, 01:48 PM
When the light is behind the camera you don't see the specular.
And when you are facing the light you can see the specular.
It looks ok to me...

05-05-2010, 02:20 PM
Rosario, unless I am mistaken, somboon added a normalmap, so the perturbed normals may indeed reflect a light which is behind the camera, if the normal is bent enough.