tests/RenderScriptTests/SceneGraph/res/raw/metal.glsl

varying vec3 varWorldPos;
varying vec3 varWorldNormal;
varying vec2 varTex0;

void main() {

   vec3 V = normalize(UNI_cameraPos.xyz - varWorldPos.xyz);
   vec3 worldNorm = normalize(varWorldNormal);

   vec3 light0Vec = V;
   vec3 light0R = reflect(light0Vec, worldNorm);
   float light0_Diffuse = clamp(dot(worldNorm, light0Vec), 0.0, 1.0);
   float light0Spec = clamp(dot(-light0R, V), 0.001, 1.0);
   float light0_Specular = pow(light0Spec, 15.0) * 0.5;

   vec2 t0 = varTex0.xy;
   lowp vec4 col = texture2D(UNI_Tex0, t0).rgba;
   col.xyz = col.xyz * (textureCube(UNI_Tex1, worldNorm).rgb * 0.5 + vec3(light0_Diffuse));
   col.xyz += light0_Specular * vec3(0.8, 0.8, 1.0);

   gl_FragColor = col;
}