Blender Internal: Fix shader node "Camera Data" that doesn't consider orthographic view.

Note that Cycles still needs to fix.

source/blender/gpu/shaders/gpu_shader_material.glsl

@@ -163,7 +163,7 @@ void camera(vec3 co, out vec3 outview, out float outdepth, out float outdist)
 {
 	outdepth = abs(co.z);
 	outdist = length(co);
-	outview = normalize(co);
+	outview = (gl_ProjectionMatrix[3][3] == 0.0)? normalize(co): vec3(0.0, 0.0, -1.0);
 }
 
 void math_add(float val1, float val2, out float outval)

source/blender/nodes/shader/nodes/node_shader_camera.c

@@ -46,9 +46,9 @@ static void node_shader_exec_camera(void *data, int UNUSED(thread), bNode *UNUSE
 	if (data) {
 		ShadeInput *shi = ((ShaderCallData *)data)->shi;  /* Data we need for shading. */
 		
-		copy_v3_v3(out[0]->vec, shi->co);       /* get view vector */
+		copy_v3_v3(out[0]->vec, shi->view);     /* get view vector */
 		out[1]->vec[0] = fabs(shi->co[2]);      /* get view z-depth */
-		out[2]->vec[0] = normalize_v3(out[0]->vec); /* get view distance */
+		out[2]->vec[0] = len_v3(shi->co);       /* get view distance */
 	}
 }