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jit.gl.pix Reference

Generates pixel processing shaders from a gen patcher

jit.gl.pix

Description

The jit.gl.pix object generates new pixel processing shaders from a patcher. jit.gl.pix is essentially a jit.gl.slab object whose shader files are generated from gen patchers.

Examples

Generates pixel processing shaders from a patcher

Attributes

activeinput [int]

The current input used for texture and matrix messages (default = 0). Useful when calling input messages from Java or JavaScript.

adapt [int] (default: 1)

Enable adapt to input (default = 1). When enabled the texture output dimensions will match the input dimensions.

colormode [symbol]

Texture color mode (default = argb)

Possible values:

'argb'
'uyvy'

dim [2 ints]

The texture output dimensions when adapt is disabled (default = 256 256)

dimscale [2 floats]

The output dimension scaling factor of the output (default = 1 1). Useful for upsampling or downsampling texture output.
output.dim = input.dim*dimscale

dirty [int]

g/s(get)

Gen patcher dirty flag

exportfolder [symbol]

Sets the folder to export gen patchers into when using the exportcode message.

gen [symbol] (default: )

The name of the gen patcher to use.

inputs [int]

Input count (default = 2)

out_name [symbol]

g/s(get)

Output texture name

outputs [int]7.0.0

Number of texture outputs (default = 1). Texture outputs correspond to gen patcher outs.

rect [4 floats]

Geometry rectangle (default = 0 0 1 1). The four values represent normalized coordinates for the left, bottom, right and top sides of the geometry rectangle. To flip the image horizontally use rect 1 0 0 1 or to flip vertically use rect 0 1 1 0 .

rectangle [int]

Enable texture rectangle mode on internal texture objects(default = 1). When enabled the internal GL texture is treated as a rectangular texture, and must be referenced using sampler2DRect and sampled using texture2DRect when sampled from a GLSL shader. When disabled the texture dimensions are upsampled to the nearest power of two value, and must be referenced and sampled using sampler2D and texture2D. Certain texture attributes and GLSL effects require rectangle mode disabled.

thru [int]

Enable thru mode (default = 1). When the flag is set, texture output is sent whenever input is received.

t [symbol]

Gen patcher title

texrect [128 floats]

Texture rectangle mapping values (default = 0 0 1 1...). The four values represent texture mapping coordinates for the left, bottom, right and top sides of the geometry rectangle, and can be used to easily crop the input image. There are four values for each texture input.

title [symbol]

Gen patcher title

type [symbol]

The output texture data type (default = auto). When type is auto the type is set by the input texture or matrix type.

Possible values:

'auto' ( Adapt to input data type )
'char' ( 8bit unsigned byte )
'long' ( 32bit integer )
'half' ( 16bit float )
'float' ( 32bit float )
'float16' ( 16bit float )
'float32' ( 32bit float )

Common Box Attributes

annotation [symbol]

Sets the text that will be displayed in the Clue window when the user moves the mouse over the object.

background [int] (default: 0)

Adds or removes the object from the patcher's background layer. background 1 adds the object to the background layer, background 0 removes it. Objects in the background layer are shown behind all objects in the default foreground layer.

color [4 floats]

Sets the color for the object box outline.

fontface [int]

Sets the type style used by the object. The options are:

plain
bold
italic
bold italic

Possible values:

0 = 'regular'
1 = 'bold'
2 = 'italic'
3 = 'bold italic'

fontname [symbol]

Sets the object's font.

fontsize [float]

Sets the object's font size (in points).

Possible values:

'8'
'9'
'10'
'11'
'12'
'13'
'14'
'16'
'18'
'20'
'24'
'30'
'36'
'48'
'64'
'72'

hidden [int] (default: 0)

Toggles whether an object is hidden when the patcher is locked.

hint [symbol]

Sets the text that will be displayed in as a pop-up hint when the user moves the mouse over the object in a locked patcher.

ignoreclick [int] (default: 0)

Toggles whether an object ignores mouse clicks in a locked patcher.

jspainterfile [symbol]

JS Painter File

patching_rect [4 floats] (default: 0. 0. 100. 0.)

Sets the position and size of the object in the patcher window.

position [2 floats]

g/s(set)

Sets the object's x and y position in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its size unchanged.

presentation [int] (default: 0)

Sets whether an object belongs to the patcher's presentation.

presentation_rect [4 floats] (default: 0. 0. 0. 0.)

Sets the x and y position and width and height of the object in the patcher's presentation, leaving its patching position unchanged.

rect [4 floats]

g/s(set)

Sets the x and y position and width and height of the object in both patching and presentation modes (if the object belongs to its patcher's presentation).

size [2 floats]

g/s(set)

Sets the object's width and height in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its position unchanged.

textcolor [4 floats]

Sets the color for the object's text in RGBA format.

textjustification [int]

Sets the justification for the object's text.

Possible values:

0 = 'left'
1 = 'center'
2 = 'right'

varname [symbol]

Sets the patcher's scripting name, which can be used to address the object by name in pattr, scripting messages to thispatcher, and the js object.

OB3D Attributes

antialias [int]

Antialiasing flag (default = 0) On some hardware, the blend_enable attribute must also be enabled for antialiasing to work.

automatic [int]

Automatic rendering flag (default = 1) When the flag is set, rendering occurs when the associated jit.gl.render object receives a bang message

aux_color [4 floats]

The auxiliary color in the form red green blue alpha (default = 0. 0. 0. 0.) The list elements should be in the range 0.-1.

blend [symbol]

The named blending mode. The possible values are:
add = blend_mode 1 1
multiply = blend_mode 2 1
screen = blend_mode 4 1
exclusion = blend_mode 4 5
colorblend = blend_mode 3 4
alphablend = blend_mode 6 7
coloradd = blend_mode 3 1
alphaadd = blend_mode 6 1

blend_enable [int]

Blending flag (default = 0) When the flag is set, blending is enabled for all rendered objects.

blend_mode [2 ints]

The source and destination planes associated with the blend mode (default = 6 7) Blend modes are specified in the form src_blend_mode dst_blend_mode. The supported modes are:
0 = zero
1 = one
2 = destination color
3 = source color
4 = one minus destination color
5 = one minus source color
6 = source alpha
7 = one minus source alpha
8 = destination alpha
9 = one minus destination alpha
10 = source alpha saturate

capture [symbol]

The name of a texture to be rendered to - e.g. jit.gl.nurbs @capture mytex will capture to jit.gl.texture @name mytex.

depth_clear [int]

Depth buffer clear flag (default = 0) When the flag is set, the depth buffer is cleared before rendering the object.

depth_enable [int]

Depth buffering flag (default = 1) When the flag is set, depth buffering is enabled.

depth_write [int]

Depth write flag (default = 1). When the flag is set, writing to the depth buffer is enabled. This will have no effect if depth_enable is turned off.

drawto [symbol]

The named drawing context in which to draw (default = none) A named drawing context is a named instance of a jit.window, jit.pwindow, or jit.matrix object that has an instance of the jit.gl.render object associated with it.

enable [int]

Enable flag (default = 1) When the flag is set, drawing is enabled.

layer [int]

Object layer number (default = 0) When in automatic mode, the layer number determines the rendering order (low to high). Objects in the same layer have no guarantee which will be rendered first.

name [symbol]

The instance name (default = UID)

smooth_shading [int]

Smooth shading flag (default = 0) When the flag is set, smooth shading is used when rendering.

tex_map [int]

Mode for automatic generation of texture coordinate controls (default = 0)
0 = no coordinates are generated.
1 = OpenGL's texture generation is used with mode GL_OBJECT_LINEAR. This applies the texture in a fixed orientation relative to the object.
2 = OpenGL's texture generation is used with mode GL_SPHERE_MAP. This can be used to create a reflection effect.
3 = OpenGL's texture generation is used with mode GL_EYE_LINEAR. This applies the texture in a fixed orientation relative to OpenGL's eye coordinates.
Modes 1 and 3 are affected by the value of the tex_plane_s and tex_plane_t attributes listed below.

tex_plane_s [4 floats]

The texture generation coefficients a b c d that apply to tex_map modes 1 and 3. (default = 1. 0. 0. 0.)
The four coefficients define a plane used to generate the s texture coordinate, which corresponds to the x axis of the texture image. If the tex_map mode is 1, s = ax + by + cz + dw, where x, y, z, and w are the homogeneous coordinates of the vertex.

tex_plane_t [4 floats]

The texture generation coefficients a b c d, which apply to tex_map modes 1 and 3. (default = 0. 1. 0. 0)
The four coefficients define a plane which is used to generate the t texture coordinate, which corresponds to the y axis of the texture image.

shader [symbol]

The name of the shader to be applied (default = none)

texture [8 symbols]

The name of the texture to be applied (default = none). If multiple textures are specified, uses multi-texturing.

Messages

anything

Set parameter values in the Gen patcher

(drag)

Drag and drop a .genjit Gen patcher

compile

Compile the Gen patcher

(mouse)

Double-click to open gen patcher window

exportcode

Arguments

target [symbol]
Export a gen patcher as shader code. With no arguments, jit.gl.pix will export a standard Jitter JXS shader file with GLSL code. The optional arguments can be either 'jxs' or 'webgl' or 'isf'.

In the 'webgl' case, jit.gl.pix will export an .html file suitable for loading in a WebGL context . The code uses TWGL as a helper library and requires the twgl-full.min.js file be in the same directory as the exported html file.

In the 'isf' case, jit.gl.pix will export a .fs fragment shader suitable for loading in a ISF (Interactive Shader Format) context

full_source_code

Opens an editor window with the generated source code formatted as a JXS file.

getparamdefault

Sends the default data values for the indicated shader parameter for the internal jit.gl.shader object out the right-most outlet.

getparamdescription

Get a parameter description

getparamlist

Sends the names of all the internal jit.gl.shader object shader parameters out the right-most outlet.

getparamtype

Sends the name of the datatype for the indicated shader parameter for the internal jit.gl.shader object out the right-most outlet.

getparamval

Sends the data values for the indicated shader parameter for the internal jit.gl.shader object out the right-most outlet.

open

Open the Gen patcher window

param

Sets the given shader parameter with the given atom values as defined in a JXS (Jitter shader) file.

sendinput

Arguments

index [int]
message [symbol]
values [list]
Sends an input jit.gl.texture a message. If the first arg is an int, it specifies the texture index to send the message, otherwise all input textures receive the message.

sendoutput

Arguments

message [symbol]
values [list]
Sends the output jit.gl.texture objects a message.

sendshader

Arguments

message [symbol]
values [list]
Sends the internal jit.gl.shader object a message

wclose

Close the Gen patcher

OB3D Messages

bang

Equivalent to the draw message.

draw

Draws the object in the named drawing destination. If the matrixoutput attribute is supported and set to 1, the geometry matrices are sent out the object's left outlet.

drawraw

Equivalent to draw with the inherit_all attribute set to 1.

drawimmediate

Equivalent to draw but ignoring any potential renderer setup

jit_gl_texture

Arguments

texture-name [symbol]
Binds the texture specified by texture-name to this object. Equivalent to setting the texture attribute to texture-name .

See Also

Name Description
GL3 Package Topics GL3 Package Topics
Working with OpenGL Working with OpenGL
Video and Graphics Programming Tutorials Video and Graphics Programming Tutorials
jit.gen Generate new Jitter MOP objects
jit.pix Generates Jitter mop pixel processing objects from a patcher.
jit.gl.slab Process texture data
jit.expr Evaluate an expression to fill a matrix
jit.matrix The Jitter Matrix!
gen~ Generate native audio signal processing routines
Gen Overview Gen Overview
GenExpr GenExpr
Gen Common Operators Gen Common Operators
Jitter Operators Jitter Operators