Hi
You should normalize it unless this is directional light and modelview matrix has no scale
05.03.2012, 19:00, "Peterakos" <[email protected]>:
Hello.I found this shader line in the book:float intensity = dot(vec3(gl_LightSource[0].position), normal );i was wondering why he doesnt normalize the light source position.He loads the cow.osg.The normal vector is normalized using:normal = normalize(gl_NormalMatrix * gl_Normal);Thank you for your time._______________________________________________
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