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A normal shader (left) and an NPR shader using cel-shading (right). Non-photorealistic rendering (NPR) is an area of computer graphics that focuses on enabling a wide variety of expressive styles for digital art, in contrast to traditional computer graphics, which focuses on photorealism.
A cel shader is often used to mimic the style of a comic book or cartoon and/or give the render a characteristic paper-like texture. [1] There are similar techniques that can make an image look like a sketch , an oil painting or an ink painting .
However assuming these shaders are available to mental ray, any .mi file can be rendered, regardless of the software that generated it. Mental Ray is fully programmable and infinitely variable, supporting linked subroutines also called shaders written in C or C++. This feature can be used to create geometric elements at runtime of the renderer ...
This shader works by replacing all light areas of the image with white, and all dark areas with a brightly colored texture. In computer graphics, a shader is a computer program that calculates the appropriate levels of light, darkness, and color during the rendering of a 3D scene—a process known as shading.
Open Shading Language (OSL) is a shading language developed by Sony Pictures Imageworks, a Canadian visual effects and computer animation studio headquartered in Vancouver, British Columbia and Montreal, Quebec, with an additional office on the Sony Pictures Studios lot in Culver City, California, a unit of Sony Pictures Entertainment's Motion Picture Group, which through an intermediate ...
GLSL shaders themselves are simply a set of strings that are passed to the hardware vendor's driver for compilation from within an application using the OpenGL API's entry points. Shaders can be created on the fly from within an application, or read-in as text files, but must be sent to the driver in the form of a string.
An example of bloom in a computer-generated image (from Elephants Dream).The light on the bright background bleeds on the darker areas, such as the walls and the characters.
A photorealistic 3D render of 6 computer fans using radiosity rendering, DOF and procedural materials. Rendering is the final process of creating the actual 2D image or animation from the prepared scene.