Texture VEX node

Computes a filtered sample of the texture map specified and returns an RGB or RGBA color.

See also: Color Map, Environment Map, Shading Layer Parameter, Texture 3D

This operator computes a filtered sample of the texture map specified and returns an RGB or RGBA color. If the image does not have an alpha channel (e.g. a JPEG image) and the operator returns RGBA, the alpha will be set to 1.

With no texture coordinates given, the values of the global s and t variables are used to index the texture. If both derivative inputs (ds and dt) are connected, s and t will represent the center of a square whose bottom-left and upper-right corners are (s-ds,t-dt) and (s+ds, t+dt) respectively .

To layer a texture on top of another using layered texture attributes already assigned to geometry, pipe the output of the Shading Layer Parameter into Vector To Float, then connect fval1 and fval2 to this operator’s s and t inputs, choosing the RGBA signature and Decal wrapping. Then connect the color output to a Vector4 To Vector operator to separate the RGB from the alpha. Put down a Mix operator and connect the RGB color to input2, the alpha to the bias and any previous Texture’s color to input1. Repeat this procedure as needed.