Material.SetMatrix 设置矩阵

var rotateSpeed = 30;
var texture : Texture ;

function Start() {
	// Create a new material with a shader
	//使用shader创建 一个新的材质
	// that rotates the texture. Texture rotation
	//旋转纹理
	// is performed with a _Rotation matrix.
	//执行_Rotation 矩阵


	var m : Material = new Material (
	" Shader \"Rotating Texture \" {" +
	"Properties { _MainTex (\"Base\", 2D) = \"white\" {} }" +
	"SubShader {" +
	"    Pass {" +
	"      Material { Diffuse (1,1,1,0) Ambient (1,1,1,0) }" +
	"      Lighting On" +
	"      SetTexture [_MainTex] {" +
	"         matrix [_Rotation]" +
	"         combine texture * primary double, texture" +
	"      }" +
	"    }" +
	"}" +
	"}"
	);
	m.mainTexture = texture;
	renderer.material = m;
}

function Update() {
	// Construct a rotation matrix and set it for the shader
	// 构建旋转矩阵，并将其设置为着色器
	
	var rot = Quaternion.Euler (0, 0, Time.time * rotateSpeed);
	var m = Matrix4x4.TRS ( Vector3.zero , rot, Vector3 (1,1,1) );
	renderer.material.SetMatrix ("_Rotation", m);
}