Rendering is the process of generating an image from a model, by means of computer programs. It would contain geometry, viewpoint,texture, lighting, and shading information. The image is a digital image or raster graphics image. In the graphics pipeline, it is the last major step, giving the final appearance to the models and animation.
Rendering has uses in architecture, video games, simulators, movie or TV special effects, and design visualization, each employing a different balance of features and techniques.
In the case of 3D graphics, rendering may be done slowly, as in pre-rendering, or in real time. When the pre-image (a wireframe sketch usually) is complete, rendering is used, which adds in bitmap textures or procedural textures, lights, bump mapping, and relative position to other objects.
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