added some stuff for level select 3d menu

Shaders/wireframe.gdshader

@@ -0,0 +1,43 @@
+shader_type spatial;
+
+render_mode unshaded;
+
+uniform vec4 modelColor : source_color;
+uniform vec4 wireframeColor : source_color;
+
+uniform float width : hint_range(0.0, 15.) = 1.;
+uniform float modelOpacity : hint_range(0.0, 1.0) = 1.;
+
+uniform bool filtered = false;
+
+const vec3 vectors[3] = {
+	vec3(1.0, 0.0 ,0.0),
+	vec3(0.0, 1.0 ,0.0),
+	vec3(0.0, 0.0 ,1.0)
+};
+
+varying vec3 baryCoord;
+
+void vertex()
+{
+	baryCoord = vectors[VERTEX_ID % 3];
+}
+
+void fragment() {
+	vec3 dBaryCoordX = dFdx(baryCoord);
+	vec3 dBaryCoordY = dFdy(baryCoord);
+	vec3 dBaryCoord  = sqrt(dBaryCoordX*dBaryCoordX + dBaryCoordY*dBaryCoordY);
+
+	vec3 remap = smoothstep(
+		vec3(0.0),
+		dBaryCoord * width,
+		baryCoord
+	);
+	
+	remap = filtered ? remap : step(.5, remap);
+
+	float closestEdge = min(min(remap.x, remap.y), remap.z);
+
+	ALBEDO = mix(wireframeColor, modelColor, closestEdge).xyz;
+	ALPHA = mix(1., modelOpacity, closestEdge);
+}