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  1. Home
  2. Attribute POP

    Attribute POP

    Summary

    The Attribute POP lets you:

    • Create new attributes
    • Rename attributes
    • Duplicate attributes
    • Delete attributes
    • Create matrix attributes

    Refer to Attribute.

    When you create a new attribute, you specify:

    • the name (choose from built-in pre-defined names, or create your own)
    • the type (float, double, int, uint)
    • the number of components in the attribute (1, 2, 3 or 4 only). Examples:
      • A float type with 3 components is therefore a float3.
      • A double with 2 components is a double2.
      • An int with 4 components is an ivec4.
      • A uint with 3 components is a uint3.
    • arrays of the above, for example create a array of 8 float3, appearing as float3[8]. The array length can be anything.
    • the default value for each component of the attribute

    New attributes can also be matrices (done on the Matrix page), like creating a mat4x4.

    PythonIcon.pngattributePOP_Class


    Parameters - Create Page

    Attribute Class attrclass - ⊞ - Makes the POP operate on point attributes, vertex attributes or primitive attributes where applicable.
    • Point point -
    • Vertex vertex -
    • Primitive primitive -

    Group group - If there are input groups, specifying a group name in this field will cause this POP to act only upon the group specified.

    Notification if Attribute Exists notificationifexists - ⊞ - Whether to display a notification if the attribute already exists on the input.
    • Ignore ignore -
    • Warning warning -
    • Error error -

    Override if Attribute Exists overrideifexists - When on, overrides an input attribute if a new attribute created by this POP has the same name.

    Pre-Multiply RGB by Alpha premultcolor - Enable RGB values pre-multiplication with the Alpha.

    New Attribute attr - Start of Sequential Parameter Blocks to create new attributes.
    Name attr0name - ⊞ - Choose to create a predefined attribute or a custom attribute.
    • Custom custom -
    • N n -
    • Color color -
    • Tex tex -
    • PointScale pointscale -
    • LineWidth linewidth -
    • Name attr0name -
    • Custom Name attr0customname - The name of the new custom attribute.

    Custom Name attr0customname - The name of the new custom attribute.

    Type attr0type - ⊞ - Determines the type.
    • float float -
    • double double -
    • int int -
    • uint uint -
    • dir dir -
    • dbl dir ddir -
    • Type attr0type -
    • Number of Components attr0numcomps - Number of components of the new attribute.

    Number of Components attr0numcomps - ⊞ -
    • 1 1 -
    • 2 2 -
    • 3 3 -
    • 4 4 -

    Array attr0isarray - Attribute is an array, for example 5 float3 values is an array of size 5.

    Array Size attr0arraysize - Nunber of elements in the array.

    Value attr0value - ⊞ - Attribute value.
    • Value attr0value0 - Attribute value(s).
    • Value attr0value1 - Attribute value(s).
    • Value attr0value2 - Attribute value(s).
    • Value attr0value3 - Attribute value(s).


    Parameters - Matrix Page

    Matrix Attribute matattr - Start of Sequential Parameter Blocks to create new matrix attributes.
    Matrix Name matattr0name - The name of the matrix attribute.

    Rows matattr0numrows - Number of rows in the matrix - 2, 3 or 4.

    Columns matattr0numcols - Number of columns in the matrix - 2, 3 or 4.

    Array matattr0isarray - ⊞ - Attribute is an array, for example 5 float3 values is an array of size 5.
    • Array matattr0isarray -
    • Array Size matattr0arraysize - Nunber of elements in the array of matrices.

    Qualifier matattr0qualifier - ⊞ - Additional detail on how the attribute should be interpreted.
    • None none -
    • Transform Matrix transformMatrix -


    Parameters - Rename Page

    Rename Attribute ren - Start of Sequential Parameter Blocks to rename attributes.
    From Attribute ren0from - The attribute to rename.

    To Attribute ren0to - Sets the new attribute name.


    Parameters - Duplicate Page

    Duplicate Attribute dup - Start of Sequential Parameter Blocks to duplicate attributes.
    Duplicate Attribute dup0name - Name of attribute to duplicate.

    New Attribute Name dup0new - Name of new attribute being duplicated.


    Parameters - Delete Page

    Delete Point Attributes deletepoint - ⊞ - List of Point attributes to delete.
    • * * -

    Delete Vertex Attributes deletevert - ⊞ - List of Vertex attributes to delete.
    • * * -

    Delete Primitive Attributes deleteprim - ⊞ - List of Primitive attributes to delete.
    • * * -


    Parameters - Common Page

    Bypass bypass - Pass through the first input to the output unchanged.

    Free Extra GPU Memory freeextragpumem - Free memory that has accumulated when output memory has grown and shrunk.

    Delete Input Attributes delinputattrs - Only output which attributes you specify in this POP - helps isolate attributes into a separate branch.

    Parameter Color Space parmcolorspace - ⊞ - Controls how all color parameters on this node are interpreted. The color values as treated as being in the selected color space, and are converted to the Working Color Space before they are used as part of the node's operation. Note that this does not change the color space of the node itself, as that is always in the Working Color Space.
    • sRGB srgb - sRGB color space, with sRGB transfer function. Considered an SDR color space with respect to Reference White.


    • sRGB - Linear srgblinear - sRGB color space, with linear transfer function. Considered an SDR color space with respect to Reference White.


    • Rec.601 (NTSC) rec601ntsc - Rec.601 with NTSC primaries color space, with Rec.601 transfer function. Considered an SDR color space with respect to Reference White.


    • Rec.709 rec709 - Rec.709 color space, with Rec.709 (same as Rec.2020) transfer function. Considered an SDR color space with respect to Reference White.


    • Rec.2020 rec2020 - Rec.2020 color space, with Rec.2020 (same as Rec.709) transfer function. Considered an HDR color space with respect to Reference White.


    • DCI-P3 dcip3 - DCI-P3 color space, with D65 white point and 2.6 gamma transfer function. Considered an HDR color space with respect to Reference White.


    • DCI-P3 (D60) dcip3d60 - DCI-P3 "D60 sim" color space, with D60 white point, and 2.6 gamma transfer function. Considered an HDR color space with respect to Reference White.


    • Display-P3 (D65) displayp3d65 - Display-P3 color space, with D65 white point, and sRGB gamma transfer function. Considered an HDR color space with respect to Reference White.


    • ACES2065-1 aces2065-1 - ACES 2065-1 (also known as ACES AP0) color space, with a linear gamma transfer function. Considered an HDR color space with respect to Reference White.


    • ACEScg acescg - ACEScg (also known as ACES AP1) color space, with a linear gamma transfer function. Considered an HDR color space with respect to Reference White.


    • Passthrough passthrough - When selected, the color values will be used as-is in the operation, without any modification or attempt to convert them into the Working Color Space.

    Parameter Reference White parmreferencewhite - ⊞ - When converting a parameter color value to the Working Color Space, this controls how it should be treated with respect to Reference White. If the Working Color Space is the same Reference White, then no adjustment is done. If they are different, then the Reference White level (brightness) of this color will be adjusted to the range expected by the Working Color Space. For example if the project is set to have a SDR Reference White of 120 nits, and the HDR Reference White is 80 nits, then a color of (1, 1, 1), which is 120 nits in the SDR color space, will be converted to be (1.5, 1.5, 1.5), which is 120 nits still in the HDR Working Color Space.
    • Default For Color Space default - Will use either the SDR or the HDR Reference White, based on the color space selected.


    • Use Parent Panel useparent - Will use the Reference White that the parent panel has selected. If the top-level panel also has 'Use Parent' selected, then 'UI Reference White' will be used.


    • Standard (SDR) sdr - Will treat the Parameter Color Space as SDR for it's reference white value.


    • High (HDR) hdr - Will treat the Parameter Color Space as HDR for it's reference white value.


    • UI ui - Will treat the Parameter Color Space as UI for it's reference white value. This uses the 'UI Reference White Nits' value for it's brightness.


    Operator Inputs

    • Input 0: -


    Info CHOP Channels

    Extra Information for the Attribute POP can be accessed via an Info CHOP.

    Common POP Info Channels

    Common Operator Info Channels

    • total_cooks - Number of times the operator has cooked since the process started.
    • cook_time - Duration of the last cook in milliseconds.
    • cook_frame - Frame number when this operator was last cooked relative to the component timeline.
    • cook_abs_frame - Frame number when this operator was last cooked relative to the absolute time.
    • cook_start_time - Time in milliseconds at which the operator started cooking in the frame it was cooked.
    • cook_end_time - Time in milliseconds at which the operator finished cooking in the frame it was cooked.
    • cooked_this_frame - 1 if operator was cooked this frame.
    • warnings - Number of warnings in this operator if any.
    • errors - Number of errors in this operator if any.


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