Color Space – Specifies the color space used. Gamma Corrected – The bitmap data is gamma corrected with the specified gamma value specified by the Texture input gamma attribute, so V-Ray needs to remove this gamma correction for rendering. Linear – The bitmap data is already in physical linear space, so no correction required and none is performed. sRGB – The bitmap data is in the sRGB color space, so V-Ray needs to convert it to linear physical space for rendering. Gamma – Specifies the gamma value used to control the luminance of the image when the color space is set to Gamma Corrected. Gain – Color corrects the texture by multiplying the RGB color values specified here to the RGB color values in the texture. Offset – Color corrects the texture by adding the RGB color values specified here to the RGB color values in the texture. Auto Select Color Channels – A PTex may have an arbitrary number of channels and there is no sure way to determine which channel contains which information. When this option is enabled, V-Ray tries to select the correct channel for Red, Blue and Green. When disabled, the user manually specifies which channel contains which information. R Channel – The index of the channel that is used as a red channel. G Channel – The index of the channel that is used as a green channel. B Channel – The index of the channel that is used as a blue channel. Auto Select Alpha Channels – When enabled, V-Ray automatically selects the alpha channel from the PTex file. A Channel – The index of the channel that is used as an Alpha channel. Alpha Type – Specifies where to take alpha from. |