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Parameters

Color Gain - a multiplier for the colors in the texture

Color Offset - an offset for the colors in the texture

A Channel - manually specify which channel of the Ptex file is the alpha channel

Alpha Type - specifies the mode in which alpha is applied

  •  0 - all alpha information is ignored;
  •  1 - the information for the alpha is taken from the specified Alpha channel in the texture;
  • -1 - the alpha information is taken from the Luminance of the RGB channels.

Auto Alpha - when on V-Ray automatically selects the alpha channel from the PTex file.

R Channel/G Channel/B Channel - manually specify the channel numbers for Red Green and Blue

Blur - applies additional blur to the texture

Cache Size - the information in a PTex file is compressed for storage. In order to be used, it has to be uncompressed and stored in the RAM. This parameter controls how much memory (in MB) is available for the current texture. If the value is large enough for the whole texture, the information is extracted only once and is stored during the entire rendering. Otherwise the information is constantly read from the hard drive, extracted, and used when necessary. Low value for this parameter may cause large PTex files to render slowly.

Color Space - specifies the color space of the image when the gamma type option is set to Specify or when the 3ds Max global gamma corrections are disabled:

  • Linear - specifies that the color data in the file is in linear physical space and no additional correction is necessary for rendering;
  • Gamma - specifies that the color data is gamma-encoded in the file; an inverse gamma correction is applied to the color data to convert it to linear physical space for rendering, based on the gamma value;
  • sRGB - specifies that the color data in the file is encoded in the sRGB color space; the standard inverse sRGB correction is applied to the colors to convert them to linear physical space for rendering. Note that sRGB color space is similar to the gamma 2.2 color space, but there are slight differences for dark colors.

Filter Type - specifies the type of filtering that is going to be applied to the texture.

Gamma - manually specifies the gamma of the loaded texture when the gamma type is Specify and the color space is Gamma.

 

Ifl End Condition - specifies what happens when the final frame of an animated texture is reached

 

  • Loop - if this mode is selected, the animation of the will jump back to the start frame
  • Ping-pong - if this mode is selected, once the final frame is reached the animation will be played backwards towards the start and continue looping in a Ping-pong manner
  • Hold - if this mode is selected, the animation will stop at the final frame

Ifl Playback Rate - a coefficient for the playback rate of the animated texture. It allows you to slow down or speed up the playback rate of the texture.

Image Number - allows you to use a certain frame out of an animated texture

Image Offset - specifies a starting frame for the animated texture

Ptex File - specifies the .ptx file to be used for the texture.

Reverse Vertices - a ptex is generated for a specific mesh. Sometimes the program generating the ptex numbers the vertices of the mesh in the reverse order. When this happens the object is not properly textured and enabling this option fixes the issue.

Sharpness - this option is only available when the Filter Type is set to Bicubic and controls the amount of sharpening applied by the filter.

Use Image Sequence - enables the usage of animated textures.

Width - the width of the filter.