![]() The beauty pass or buffer is the main image created by the renderer-the one you see in the render window. You can "render out" an image sequence on the "render farm" (a network of computers dedicated to the task of rendering) to produce a "final render"-the image which, although it might have been called final, is actually only an ingredient in your composite. ![]() Render can be a noun or a verb, or even an adjective. ![]() If a facility is divided into 2d and 3d departments, the 3d side is sometimes referred to as the CG department. Technically, any image generated by a computer, Fusion's Fast Noise, an animated character, or a particle system, is "computer graphics." Usually, though, when someone refers to CG or CGI, they mean the output of a 3d renderer. Let's start with that phrase: Computer Graphics. It is sometimes difficult to know what someone means when they use certain computer graphics jargon because the words change meanings depending on context, and sometimes on who's using them. Terminologyįirst let's define some terms. In this chapter, we'll look at render buffers created by Houdini's Mantra render engine and learn how to use them to control the look of a CGI character. While this may seem like a lot of extra work, it gives you a great deal of flexibility to exactly control the look of a Computer Generated Image (CGI). Unlike photography, which can only record the combined light all at once, a renderer can record the surface color ( diffuse), reflections, bounce light, shadows, and other properties of the light in separate images, which can then be combined in the compositor to construct the final image. In addition to the finished image, the renderer can split the output into a variety of different buffers, or passes. Most 3d programs have their own built-in renderers, but most can also use add-on renderers like V-Ray and Redshift. A render engine transforms information about 3D objects into images of those objects. These programs offer not just better modeling and animation tools, but much more powerful rendering engines. Computer animated characters, sophisticated fluid and particle simulations, spacecraft, and detailed environments are more commonly created in separate, dedicated 3d software such as Maya, Houdini, or Modo, among others. Sometimes the effect demanded for a shot is more complex that what can be created in the compositor. ![]()
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