Texture Sampling Parameters
The Texture Sampling parameters can be accessed anywhere a TOP is being sampled for use in a material or shader. To open these parameters, click the "+" button to the right of the parameter. The parameter portion of the internal names depends on what map parameter these parameters are related to. For example for the colormap parameter, extendu would be colormapextendu.
/parameterextendu - Sets the extend mode for the U coordiate/direction. Refer to Texture Extend Modes for more information.
/parameterextendv - Sets the extend mode for the V coordiate/direction. Refer to Texture Extend Modes for more information.
/parameterfilter - Controls how this TOP is filtered when it's gets used. See Texture Filtering for more information.
/parameteranisotropy - Controls the level of anisotropic filtering used on the TOP when it's sampled. This results in more samples when sampling a TOP, increasing the texturing quality. Refer to Anisotropic Filtering for more information.
/parametercoord - Determines which set of texture coordinates to use (which texture layer).
/parametercoordinterp - Adjusts the interpolation of the texture coordinated between Perspective Correct and Linear(no perspective).
Operators that have 1 or more input, like a Math CHOP, are called filters. See .
An that creates, composites and modifies images, and reads/writes images and movies to/from files and the network. TOPs run on the graphics card's GPU.