Make light position uniform 3d

shader/lighting/occlude.geom

@@ -2,11 +2,10 @@
 layout (points) in;
 layout (triangle_strip, max_vertices = 11) out;
 layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
-uniform vec2 lightPos;
-vec2 lightPosa = ( theMat * vec4(lightPos,0.1,1) ).xy;
+uniform vec3 lightPos;
 
 vec4 shift (vec4 p)
-{ return vec4 (p.xy + (200 * (p.xy-lightPos)), 0.1 , 1);
+{ return vec4 (p.xy + (200 * (p.xy-lightPos.xy)), 0.1 , 1);
 }
 float isLHS (vec2 startV, vec2 testV)
 {
@@ -17,7 +16,7 @@ void main()
 {
 vec4 p1 = vec4 (gl_in[0].gl_Position.xy,0.1,1);
 vec4 p2 = vec4 (gl_in[0].gl_Position.zw,0.1,1);
-if (isLHS (p1.xy - lightPos, p2.xy - lightPos) < 0)
+if (isLHS (p1.xy - lightPos.xy, p2.xy - lightPos.xy) < 0)
 {
 vec4 p3 = vec4 (p1.xy,-0.5,1);
 vec4 p4 = vec4 (p2.xy,-0.5,1);