Is the coordinate system in camera space left-handed ?!

[GabZach]

I have a very simple shader that uses one light source, defined as a uniform.
I am interpreting its coordinates in camera space (or so I think).
The funny thing is, that light source appears to be in a let-handed coordinate system.
At least, when I change its coordinates live, it looks like those coordinates are in a left-handed coord system.

Could that be? Is there a mistake on my part?

Best regards, Gabriel

Encl.:
Code of the vertex shader (just the relevant parts):

uniform mat4 matModelToWorld;
uniform mat4 matCamera;
uniform vec3 LightPos;

out vec3 fNormal;
out vec3 fLightVec;

void main()
{
vec4 vpos_cam_space = matCamera * matModelToWorld * vec4(vPosition, 1.0);
gl_Position = matProjection * vpos_cam_space;
vec3 vpos3 = vpos_cam_space.xyz / vpos_cam_space.w;
fLightVec = vec3( LightPos - vpos3 );
fNormal = ( matCamera * matModelToWorld * vec4(vNormal, 0.0) ).xyz;
}

[luoli830]

Yes, camera coordinate system is left-handed. so you need to transform