aras-p

// world, view, projection matrices
var world = obj.transform.localToWorldMatrix;
var view = cam.worldToCameraMatrix;
var proj = cam.projectionMatrix;

// the actual projection matrix used in shaders
// is actually massaged a bit to work across all platforms
// (different Z value ranges etc.)
var gpuProj = GL.GetGPUProjectionMatrix (proj, false);
var gpuMV = view * world; // UNITY_MATRIX_MV