Many Many Updates

Materials/Chica.gdshader

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+shader_type spatial;
+render_mode blend_mix, depth_draw_opaque, cull_back, diffuse_burley, specular_schlick_ggx;
+
+uniform sampler2D diffuse_texture;
+uniform sampler2D normal_map: hint_normal;
+uniform float normal_scale : hint_range(-16.0, 16.0);
+uniform sampler2D mask_map;
+uniform sampler2D paint_map;
+
+uniform vec3 paint_color_r : source_color;
+uniform vec3 paint_color_g: source_color;
+uniform vec3 paint_color_b: source_color;
+uniform vec3 paint_color_a: source_color;
+
+
+
+void fragment() {
+    vec2 uv = UV;
+
+    vec4 base_color = texture(diffuse_texture, uv);
+    vec4 paint = texture(paint_map, uv);
+    vec4 masks = texture(mask_map, uv);
+
+    // Mix base with paint colors by channels
+    vec3 paint_result = base_color.rgb;
+    paint_result = mix(paint_result, paint_color_r, paint.r);
+    paint_result = mix(paint_result, paint_color_g, paint.g);
+    paint_result = mix(paint_result, paint_color_b, paint.b);
+    paint_result = mix(paint_result, paint_color_a, paint.a);
+
+    ALBEDO = paint_result;
+
+    EMISSION = paint_result * masks.b;
+    ROUGHNESS = masks.g;
+    METALLIC = masks.r;
+
+	NORMAL_MAP = texture(normal_map, uv).rgb;
+	NORMAL_MAP_DEPTH = normal_scale;
+}