Updated hologram shader to use instanced albedo

scripts/building_components/building.gd

@@ -161,10 +161,17 @@ func set_visual_build_progress(ratio: float) -> void:
 	var geometries: Array[Node] = find_children("", "GeometryInstance3D", true)
 	for node in geometries:
 		var geometry: GeometryInstance3D = node as GeometryInstance3D
+		var mesh_instance: MeshInstance3D = node as MeshInstance3D
 		if geometry != null:
 			if ratio >= 1.0:
 				geometry.material_override = null
 			else:
+				if mesh_instance:
+					var mesh_material: StandardMaterial3D = mesh_instance.mesh.surface_get_material(0)
+					if mesh_material != null:
+						var mesh_colour: Color = mesh_material.albedo_color
+						geometry.set_instance_shader_parameter("albedo_color", mesh_colour)
+					
 				geometry.material_override = hologram_material
 				var built_amount: float = remap(ratio, 0, 1, hologram_build_min, hologram_build_max)
 				geometry.set_instance_shader_parameter("built_amount", built_amount)

shaders/hologram.gdshader

@@ -1,7 +1,7 @@
 shader_type spatial;
-render_mode blend_mix, depth_prepass_alpha, cull_disabled; // blend_add
+render_mode blend_add, depth_prepass_alpha, cull_disabled; // blend_add
 
-uniform vec4 albedo_color : source_color;
+uniform float base_opacity: hint_range(0.0, 1.0) = 0.2;
 
 group_uniforms warp;
 uniform bool enable_warp = false;
@@ -9,30 +9,45 @@ uniform vec3 warp_vector = vec3(1.0, 1.0, 1.0);
 uniform float warp_strength : hint_range(0.0, 1.0) = 0.5;
 uniform float warp_rate : hint_range(0.0, 200.0) = 0.5;
 
+group_uniforms glow;
+uniform bool glow_enabled;
+uniform float glow_amount = 4.0;
+uniform float glow_intensity = 4.5;
+uniform vec3 glow_colour: source_color;
+
 instance uniform float built_amount = 2.0;
+instance uniform vec4 albedo_color : source_color = vec4(1, 1, 1, 1);
+instance uniform vec4 hologram_colour : source_color = vec4(1.0, 0.54, 0.0, 1.0);
 
 varying float model_y;
 
+vec3 fresnel_glow(float amount, float intensity, vec3 color, vec3 normal, vec3 view) {
+	return pow((1.0 - dot(normalize(normal), normalize(view))), amount) * color * intensity;
+}
+
 // Called for every vertex the material is visible on.
 void vertex() {
 	model_y = VERTEX.y;
 	if (enable_warp && VERTEX.y > built_amount) {
-        float offset = sin(pow(VERTEX.y, 2) * warp_rate * TIME) * pow(warp_strength, 2);
+        float offset = sin(warp_rate * TIME) * pow(warp_strength, 2);
 		VERTEX += offset * warp_vector;
 	}
 }
 
 // Called for every pixel the material is visible on.
 void fragment() {
-	float base_opacity = 0.2;
-	
 	if (model_y > built_amount) {
+		vec3 fresnel = vec3(0, 0, 0);
+		if (glow_enabled) {
+			fresnel = fresnel_glow(glow_amount, glow_intensity, glow_colour, NORMAL, VIEW);
+		}
+		ALBEDO.rgb = (hologram_colour
+	).rgb + fresnel;
 		ALPHA = base_opacity;
 	} else {
 		ALPHA = 1.0;
+		ALBEDO.rgb = albedo_color.rgb;
 	}
-
-	ALBEDO.rgb = albedo_color.rgb;
 }
 
 // Called for every pixel for every light affecting the material.

shaders/hologram_material.tres

@@ -5,8 +5,12 @@
 [resource]
 render_priority = 0
 shader = ExtResource("1_p0wwg")
-shader_parameter/albedo_color = Color(1, 1, 1, 1)
+shader_parameter/base_opacity = 0.2
 shader_parameter/enable_warp = true
 shader_parameter/warp_vector = Vector3(0.1, 0, 0.1)
 shader_parameter/warp_strength = 0.576
 shader_parameter/warp_rate = 29.667
+shader_parameter/glow_enabled = true
+shader_parameter/glow_amount = 4.0
+shader_parameter/glow_intensity = 4.5
+shader_parameter/glow_colour = Color(1, 0.470588, 1, 1)