This operator sets the environment map (on an infinite sphere) and returns its color. If the image does not have an alpha channel associated with it (e.g. a JPEG image) and the operator returns RGBA, the alpha component will be set to 1.
RGB or RGBA values.
Image file to use as environment map.
Determines how the image is evaluated when the texture coordinates are outside the range 0 to 1. The options are:
repeat). The image map repeats outside the
range 0 the range 0 to 1. Basically, the integer component
of the texture coordinate is ignored.
streak). Texture coordinates are clamped to
the 0 to 1 range.
decal). Coordinates outside the range 0 to 1
will evaluate to the border color rather than an image
type of anti-aliasing filter to be used for evaluation. The options are:
Blurs the environment map based on derivatives in shading contexts. For contexts that do not provide derivatives, such as the sop context, this parameter will have no effect and you should instead use Texture Blur or Pixel Blur. In shading contexts, filtering will be proportional to the micropolygon size, with a filter width of 1 filtering one micropolygon.
Half angle in degrees over which the environment map should be blurred.
Border color when Decal wrapping is used.
Specifies whether derivative extrapolation should be used when computing anti-aliasing information.
Interpolate MIP Levels
Specifies whether RAT files should interpolate between different MIP levels. If enabled, it will help remove discontinuities when different MIP levels of a RAT file are accessed. However, the results of texture evaluation will be slightly softer (i.e. blurrier) and will take twice as long to compute.