object transparency slider script

Question

I'm working on an anatomical application of a human hand. Surrounding all the muscles/bones etc we've included a model of the skin, linked to a slider to change the transparency.

Short impression: link text

the transparency/opacity changes when you drag town the slider, however between 90%-100% there is a big "gap"

The script for the slider:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class SliderFunctionatlity : MonoBehaviour {
 
     public Transform target;
 //    GameObject VolumeSliderGet;
     public Slider slider;
     public float VolumeSliderGet;
     // Use this for initialization
 
     void Start () {
        }
     
     // Update is called once per frame
     void Update () {
     
 //        setAlpha();
         VolumeSliderGet = GameObject.Find ("Main Menu/Panel/Slider").GetComponent<Slider>().value;
     }
 
     public void setAlpha()
     {
         MeshRenderer elemRenderer,elemRenderer2;
         Shader shader = Shader.Find("Marmoset/Beta/HairSKIN IBL");
         Shader shader1 = Shader.Find ("Marmoset/Bumped Specular IBL");
         Color mycolor = new Color();
         ColorUtility.TryParseHtmlString ("#c0c0c0", out mycolor);
 
         if(VolumeSliderGet != 1)
         {
             elemRenderer = target.GetComponentInChildren<MeshRenderer>();
             Color originalColor = elemRenderer.material.color;
             elemRenderer.material.shader = shader;
             elemRenderer.material.color = new Color(originalColor.r, originalColor.g, originalColor.b, VolumeSliderGet);
 
             if(VolumeSliderGet > 0.95){
 //            Debug.Log ("Using shader without transparency");
                 elemRenderer = target.GetComponentInChildren<MeshRenderer>();
                 elemRenderer.material.shader = shader1;
                 elemRenderer.material.color = mycolor;
             }
 
 //            Camera.main.GetComponent<camerahandling>().enabled = false;
             }
         }
 }

I'm too unexperienced to start adjusting the 2 shaders linked in this script (both from the Marmoset), but I figured out that the "HairSKIN IBL" shader still remains at about 90% and basically never hit 100%, the other shader ("Bumped Specular IBL") doesnt have an alpha channel I think, so not sure how to change that.

Does anybody know a possible solution for this? Basically I'm looking for a diffuse bumped specular shader with the possiblity to change the alpha/opacity or another solution to change the alpha/opacity from the skin. Thanks in advance!

Answer 1

I fixed the difference between the 2 different shaders, the transition is very smooth now (the alpha channel wasnt having the (255,255.255.255) color as default...

howevery, the transparency shaders gives me quite some "artifacts now when the alpha is somewhere between 0.8 and 1.0. I'm using the Marmoset/Beta/Hair IBL for the purpose: link text

 // Marmoset Skyshop
 // Copyright 2013 Marmoset LLC
 // http://marmoset.co
 
 Shader "Marmoset/Beta/Hair IBL" {
     Properties {
         _Color   ("Diffuse Color", Color) = (1,1,1,1)
         _SpecColor ("Specular Color", Color) = (1,1,1,1)
         _SpecInt ("Specular Intensity", Float) = 1.0
         _Shininess ("Specular Sharpness", Range(2.0,8.0)) = 4.0
         _Fresnel ("Specular Fresnel", Range(0.0,1.0)) = 0.0        
         _MainTex ("Diffuse(RGB) Alpha(A)", 2D) = "white" {}
         _SpecTex ("Specular(RGB) Gloss(A)", 2D) = "white" {}
         _BumpMap ("Normalmap", 2D)     = "bump" {}
         
         _SubdermisColor ("Subdermis Color", Color) = (1,1,1,1)
         _Subdermis ("Subdermis", Range(0.0,1.0)) = 1.0
         _SubdermisTex("Subdermis(RGB) Skin Mask(A)", 2D) = "white" {}
 
         _TranslucencyColor ("Translucency Color", Color) = (1,0.5,0.4,1)
         _Translucency ("Translucency", Range(0.0,1.0)) = 0.0
         _TranslucencySky ("Sky Translucency", Range(0.0,1.0)) = 0.0
         _TranslucencyMap ("Translucency Map", 2D) = "white" {}
 
         _FuzzColor    ("Fuzz Color", Color) = (1,1,1,1)
         _Fuzz        ("Fuzz", Range(0.0,1.0)) = 0.0
         _FuzzScatter ("Fuzz Scatter", Range(0.0,1.0)) = 1.0
         _FuzzOcc     ("Fuzz Occlusion", Range(0.5,1.0)) = 0.5
         
         _Aniso        ("Anisotropy", Range(0.0,1.0)) = 0.0
         _AnisoDir    ("Anisotropy Direction", Range(0.0,180.0)) = 0.0
         
         _Cutoff        ("Shadow Cutoff", Range(0.0,1.0)) = 0.3
         
         //slots for custom lighting cubemaps
         
     }
     
     SubShader {
         
         Ztest Less
             Blend SrcAlpha OneMinusSrcAlpha
         Tags {
             "Queue"="Transparent"
             "RenderType"="Transparent"
             "IgnoreProjector"="True"
         }
         LOD 400
         //diffuse LOD 200
         //diffuse-spec LOD 250
         //bumped-diffuse, spec 350
         //bumped-spec 400
         
         //mac stuff
         CGPROGRAM
         #ifdef SHADER_API_OPENGL
             #pragma glsl
         #endif
                 
         #pragma target 3.0
         #pragma exclude_renderers flash
         #pragma surface MarmosetSkinSurf MarmosetSkinDirect vertex:MarmosetSkinVert noambient alpha:fade
                 
         #pragma multi_compile MARMO_BOX_PROJECTION_OFF MARMO_BOX_PROJECTION_ON
         #if MARMO_BOX_PROJECTION_ON    
             #define MARMO_BOX_PROJECTION
         #endif
         
         #pragma multi_compile MARMO_SKY_BLEND_OFF MARMO_SKY_BLEND_ON
         
         #if MARMO_SKY_BLEND_ON
             #define MARMO_SKY_BLEND
         #endif
         
         #define MARMO_HQ
         #define MARMO_SKY_ROTATION
         #define MARMO_DIFFUSE_IBL
         #define MARMO_SPECULAR_IBL
         #define MARMO_DIFFUSE_DIRECT
         #define MARMO_SPECULAR_DIRECT        
         #define MARMO_NORMALMAP
         #define MARMO_MIP_GLOSS
         
         #define MARMO_SUBDERMIS_MAP
         #define MARMO_TRANSLUCENCY_MAP
         #define MARMO_SPECULAR_ANISO
         #define MARMO_TRANSLUCENCY_DIRECT
         #define MARMO_TRANSLUCENCY_IBL
         
         #define MARMO_SKIN_IBL
         #define MARMO_SKIN_DIRECT
         //#define MARMO_SPECULAR_FILTER
         //#define MARMO_DIFFUSE_SPECULAR_COMBINED
                 
         #define MARMO_ALPHA
         //#define MARMO_GLOW
         //#define MARMO_PREMULT_ALPHA
         //#define MARMO_OCCLUSION
         //#define MARMO_VERTEX_OCCLUSION
         //#define MARMO_VERTEX_COLOR        
                         
         #include "../../MarmosetCore.cginc"
         #include "MarmosetSkinInput.cginc"
         #include "MarmosetSkin.cginc"
 
         ENDCG
     }
     
     SubShader {
         Blend SrcAlpha OneMinusSrcAlpha
         Tags {
             "Queue"="Transparent"
             "RenderType"="Transparent"
             "IgnoreProjector"="True"
         }
         LOD 400
         //diffuse LOD 200
         //diffuse-spec LOD 250
         //bumped-diffuse, spec 350
         //bumped-spec 400
         
         //mac stuff
         CGPROGRAM
         #ifdef SHADER_API_OPENGL
             #pragma glsl
         #endif
                 
         #pragma target 3.0
         #pragma only_renderers gles gles3 metal d3d11_9x
         #pragma surface MarmosetSkinSurf MarmosetSkinDirect vertex:MarmosetSkinVert noambient alpha:fade
                 
         #pragma multi_compile MARMO_BOX_PROJECTION_OFF MARMO_BOX_PROJECTION_ON
         #if MARMO_BOX_PROJECTION_ON    
             #define MARMO_BOX_PROJECTION
         #endif
         
         #pragma multi_compile MARMO_SKY_BLEND_OFF MARMO_SKY_BLEND_ON
         
         #if MARMO_SKY_BLEND_ON
             #define MARMO_SKY_BLEND
         #endif
         
         #define MARMO_HQ
         #define MARMO_SKY_ROTATION
         #define MARMO_DIFFUSE_IBL
         #define MARMO_SPECULAR_IBL
         #define MARMO_DIFFUSE_DIRECT
         #define MARMO_SPECULAR_DIRECT        
         #define MARMO_NORMALMAP
         //#define MARMO_MIP_GLOSS
         
         #define MARMO_SUBDERMIS_MAP
         #define MARMO_TRANSLUCENCY_MAP
         #define MARMO_SPECULAR_ANISO
         #define MARMO_TRANSLUCENCY_DIRECT
         #define MARMO_TRANSLUCENCY_IBL
         
         #define MARMO_SKIN_IBL
         #define MARMO_SKIN_DIRECT
         //#define MARMO_SPECULAR_FILTER
         //#define MARMO_DIFFUSE_SPECULAR_COMBINED
                 
         #define MARMO_ALPHA
         //#define MARMO_GLOW
         //#define MARMO_PREMULT_ALPHA
         //#define MARMO_OCCLUSION
         //#define MARMO_VERTEX_OCCLUSION
         //#define MARMO_VERTEX_COLOR        
                         
         #include "../../MarmosetCore.cginc"
         #include "MarmosetSkinInput.cginc"
         #include "MarmosetSkin.cginc"
 
         ENDCG
     }
     
     FallBack "Transparent/Cutout/Bumped Specular"
 }

I checked some other objects (the skin is a high-polygon model compared to some smaller bones), but they all give the same strange "artifacts". Is this issue due to bad structures/textures or something I can change in the script?

object transparency slider script

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