c# – Unity 5中的运行时法线贴图导入

我检查的链接：

http://answers.unity3d.com/questions/801670/runtime-loading-normal-texture.html
http://answers.unity3d.com/questions/47121/runtime-normal-map-import.html

P.S：奇怪的是当我切换到Unity内部的“场景视图”时,如果我从“检查器”展开材质选项卡,则将法线贴图应用于对象.

我的代码：

....
Material mat = new Material(Shader.Find("Standard (Specular setup)"));
mat.SetTexture("_MainTex",colortex);

normaltex = getNormalTexture(Texture2D source);
mat.SetTexture("_BumpMap",normaltex);
mat.SetFloat("_Glossiness",0.1f);
mat.SetFloat("_BumpScale",1.0f);

            ....             

public static Texture2D getNormalTexture(Texture2D source)
{
    Texture2D normalTexture = new Texture2D(source.width,source.height,TextureFormat.ARGB32,true);
    Color theColour = new Color();
    for (int x = 0; x < source.width; x++)
    {
        for (int y = 0; y < source.height; y++)
        {
            theColour.r = 0;
            theColour.g = source.GetPixel(x,y).g;
            theColour.b = 0;
            theColour.a = source.GetPixel(x,y).r;
            normalTexture.SetPixel(x,y,theColour);
        }
    }
    normalTexture.Apply();
    return normalTexture;
 }