1. A method for real-time depth modification of stereo images of a virtual reality environment comprising obtaining or creating a three-dimensional model of a virtual reality environment; generating a spherical translation map from said three-dimensional model, wherein said spherical translation map assigns translation values to points on a spherical surface in said three-dimensional model with a user located at a center of said spherical surface; each of said translation values is a function of a distance of a closest object in said three-dimensional model from said user along a ray between said user and each of said points on said spherical surface; obtaining a pose of said user relative to said virtual reality environment; rendering a left viewpoint image of said three-dimensional model from said pose of said user; rendering a right viewpoint image of said three-dimensional model from said pose of said user; applying one or more translation modifications to said spherical translation map to adjust a depth of one or more objects in said three-dimensional model relative to said user; modifying said left viewpoint image and said right viewpoint image to reflect said translation modifications without re-rendering said left viewpoint image and said right viewpoint image from said three-dimensional model.