Experimental:GLSL Copy POP

Summary

The GLSL Copy POP lets you make copies of the geometry of the first input POP, and apply custom GLSL code to each copy.

If the template input (second input) is not connected, the "number of copies" parameter determines the number of copies.

If the template input is connected, the number of copies is determined by the number of points in the template. A copy is created at each point.

One compute compute shader is run for each element type (points, vertices, primitives) of a copy. Attributes to output are specified in the Output Attributes parameter. A valid points compute shader is required.

For vertices, a custom compute shader is optional, the default compute shader updates the index buffer and copies the input vertex attributes to the output.

For primitives, a custom compute shader is optional, the default compute shader updates extra buffers required for line strips, primitive groups, and copies the input primitive attributes to the output.

See default commented shader DATs for available helper functions and example usage.

Refer to the Write GLSL POPs article for more info on using this POP.

glslcopyPOP_Class

Parameters - GLSL Page

Number of Copies ncy -

Points Compute Shader ptcomputedat -

Point Output Attributes ptoutputattrs - ⊞ -

* * -

Verts Compute Method vertcomputemethod - ⊞ -

Default default -

Custom Shader custom -

Verts Compute Shader vertcomputedat -

Vert Output Attributes vertoutputattrs - ⊞ -

* * -

Prim Compute Method primcomputemethod - ⊞ -

Default default -

Custom Shader custom -

Prim Compute Shader primcomputedat -

Prim Output Attributes primoutputattrs - ⊞ -

* * -

Append Dimension dimension - ⊞ -

When Template Points / Copies > 1 morethanone -

Always always -

TDSimplexNoise() simplexnoise - ⊞ - Pick between Performance vs Quality Simplex noise. Performance mode picks the existing TDSimplexNoise(). Quality noise reduces certain artifacts and axis alignment issues with the existing simplex noise at the cost of speed.

Performance performance - Performant noise.

Quality quality - Quality noise.

Parameters - Create Attributes Page

New Attribute attr -

New Attribute Class attr0class - ⊞ -

Point point -

Vertex vertex -

Primitive primitive -

New Attribute Name attr0name - ⊞ -

Custom custom -

N n -

Color color -

Tex tex -

PointScale pointscale -

LineWidth linewidth -

Custom Name attr0customname -

New Attribute Type attr0type - ⊞ -

float float -

double double -

int int -

uint uint -

dir dir -

dbl dir ddir -

New Attribute Number of Components attr0numcomps - ⊞ -

1 1 -

2 2 -

3 3 -

4 4 -

Array attr0isarray -

New Attribute Array Size attr0arraysize -

Matrix Attribute matattr -

Matrix Attribute Class matattr0class - ⊞ -

Point point -

Vertex vertex -

Primitive primitive -

Custom Matrix Name matattr0name -

Rows matattr0numrows -

Columns matattr0numcols -

Array matattr0isarray -

Array Size matattr0arraysize -

Qualifier matattr0qualifier - ⊞ -

None none -

Transform Matrix transformMatrix -

Parameters - Vectors Page

Vector vec -

Name vec0name -

Type vec0type - ⊞ -

float float -

vec2 vec2 -

vec3 vec3 -

vec4 vec4 -

double double -

dvec2 dvec2 -

dvec3 dvec3 -

dvec4 dvec4 -

int int -

ivec2 ivec2 -

ivec3 ivec3 -

ivec4 ivec4 -

uint uint -

uvec2 uvec2 -

uvec3 uvec3 -

uvec4 uvec4 -

Value vec0value - ⊞ -

Value vec0valuex -

Value vec0valuey -

Value vec0valuez -

Value vec0valuew -

Parameters - Samplers Page

Sampler sampler -

Name sampler0name -

TOP sampler0top - ⊞ -

Extend U sampler0extendu - ⊞ -

Hold hold -

Zero zero -

Repeat repeat -

Mirror mirror -

Extend V sampler0extendv - ⊞ -

Hold hold -

Zero zero -

Repeat repeat -

Mirror mirror -

Extend W sampler0extendw - ⊞ -

Hold hold -

Zero zero -

Repeat repeat -

Mirror mirror -

Filter sampler0filter - ⊞ -

Nearest Pixel nearest -

Interpolate Pixels linear -

Parameters - Arrays Page

Array array -

Name array0name -

Type array0type - ⊞ -

float float -

vec2 vec2 -

vec3 vec3 -

vec4 vec4 -

CHOP array0chop -

Parameters - Matrices Page

Matrix matrix -

Name matrix0name -

Matrix matrix0value -

Parameters - Temp Buffers Page

Temp Buffer tempbuffer -

Name tempbuffer0name -

Initial Value tempbuffer0initval -

Parameters - Constants Page

Constant const -

Name const0name -

Value const0value -

Parameters - POP Buffers Page

Buffer buffer -

POP buffer0pop -

Attribute Class buffer0attrclass - ⊞ -

Point point -

Vertex vertex -

Primitive primitive -

Attribute buffer0attr -

Name buffer0name -

Parameters - Common Page

Bypass bypass -

Delete Input Attributes delinputattrs -

Operator Inputs

Input 0: -
Input 1: -

Info CHOP Channels

Extra Information for the GLSL Copy 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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