var vertexShader = 
"varying vec3 P;\n" +
"varying vec3 N;\n" +
"varying vec3 I;\n" +
"void main()\n" +
"{\n" +
"//Transform vertex by modelview and projection matrices\n" +
"gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n" +
"// Position in clip space\n" +
"P = vec3(gl_ModelViewMatrix * gl_Vertex);\n" +
"// Normal transform (transposed model-view inverse)\n" +
"N = gl_NormalMatrix * gl_Normal;\n" +
"// Incident vector\n" +
"I = P;\n" +
"// Forward current color and texture coordinates after applying texture matrix\n" +
"gl_FrontColor = gl_BackColor = vec4(1.0, 1.0, 1.0, 1.0);\n" + 
"gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;\n" +
"}";

var fragmentShader = 
"uniform sampler2D myTexture;		\n" +
"uniform vec4 callback;			\n" +
"varying vec3 P;\n" +
"varying vec3 N;\n" +
"varying vec3 I;\n" +
"float EdgeFalloff;\n" +
"void main()\n" +
"{\n" +
 "vec4 col = texture2D(myTexture, vec2(gl_TexCoord[0]));\n" +
"float opacity = dot(normalize(N), normalize(-I));\n" +
"opacity = abs(opacity);\n" +
"EdgeFalloff =  length(N);\n" +
"opacity = 1.0 - pow(opacity, EdgeFalloff);\n" +
"col *= gl_Color; 	\n" +
"//gl_FragColor = callback * opacity* (gl_Color.r+gl_Color.g+gl_Color.b);\n" +
"//gl_FragColor = callback * opacity* col;\n" +
"gl_FragColor = callback * opacity* (col.r + col.g + col.b + col.a);\n" +
"}";

 

myShaderCallBack1 = function()
{ 
                  var time = new Date().getTime();
	//var pulse = (time % 500) / 500.0;
	var color1 = Math.random()*1+0.5;
                   var color2 =Math.random()*1+0.1;
                  	var color3 =  Math.random()*1+0.2;
                  	var color4 =  Math.random()*1+0.5;

	ccbSetShaderConstant(2, 'callback', color1, color2, color3, color4);
}



var newMaterial1 = ccbCreateMaterial(vertexShader, fragmentShader, 0, myShaderCallBack1);
 

var soldier = ccbGetSceneNodeFromName('soldier');
ccbSetSceneNodeMaterialProperty(soldier, 0, 'Type', newMaterial1);