Shader and material layers for rendering three-dimensional (3D) object data models

A non-transitory computer-readable medium having stored therein instructions, that when executed by a computing device, cause the computing device to perform functions comprising:

• rendering a view of a portion of a three-dimensional (3D) object data model of an object based on material properties associated with the portion, wherein the 3D object data model comprises material properties associated with geometry of the 3D object data model;
• determining a first appearance metric between an appearance of the portion in the rendered view and an appearance of the portion in a two-dimensional (2D) image by comparing the appearance of the portion in the rendered view with the appearance of the portion in the 2D image;
• for one or more iterations:
• based on the first appearance metric, determining a modification to one or more of the material properties associated with the portion;
• rendering another view of the portion of the 3D object data model based on the modification to the material properties associated with the portion;
• and
• determining another appearance metric between an appearance of the portion in the 2D image and an appearance of the portion in the rendered another view;
• and
• storing the 3D object data model of the object having modified material properties for the portion, wherein the modified material properties are associated with a minimum appearance metric of the one or more iterations.

A system, comprising:

• a rendering component, the rendering component configured to render a view of a portion of a three-dimensional (3D) object data model of an object based on material properties associated with geometry of the 3D object data model;
• a refinement component, the refinement component configured to perform the following functions for one or more iterations:
• determine an appearance metric between an appearance of the portion in a view that is rendered by the rendering component and an appearance of the portion in a two-dimensional (2D) image by comparing the appearance of the portion in the view that is rendered with the appearance of the portion in the 2D image;
• determine a modification to one or more of the material properties associated with portion based on the appearance metric;
• and
• provide the modification to the rendering component;
• and
• a material component, the material component configured to store the 3D object data model of the object having modified material properties for the portion, wherein the modified material properties are associated with a minimum appearance metric of the one or more iterations.