Orange; another node update for reviewing.

Material Nodes now have input sockets, to override the actual Material
settings. If socket has no input, you can also edit Material settings here.
(Color picker, number slider).

Of course a load of options will become available here, first bugfixing!
(Oh, and enable fix thread render)

source/blender/src/previewrender.c

@@ -849,11 +849,6 @@ static void shade_lamp_loop_preview(ShadeInput *shi, ShadeResult *shr)
 	float lv[3], *la, *vn, vnor[3];
 	int a;
 	
-	// copy all relevant material vars, note, keep this synced with render_types.h
-	memcpy(&shi->r, &mat->r, 23*sizeof(float));
-	// set special cases:
-	shi->har= mat->har;
-	
 	if((mat->mode & MA_RAYMIRROR)==0) shi->ray_mirror= 0.0f;
 	memset(shr, 0, sizeof(ShadeResult));
 	
@@ -1111,6 +1106,10 @@ static void shade_preview_pixel(ShadeInput *shi, float *vec, int x, int y, char
 		ntreeShaderExecTree(mat->nodetree, shi, &shr);
 	}
 	else {
+		/* copy all relevant material vars, note, keep this synced with render_types.h */
+		memcpy(&shi->r, &mat->r, 23*sizeof(float));
+		shi->har= mat->har;
+		
 		shade_lamp_loop_preview(shi, &shr);
 	}