List of graph nodes

Output nodes

Output

This node is the default output node. It shows the result of the whole graph.

Inputs:

• an image or value that will be output by the whole graph.

Parameters:

• Size: the final image size in pixel.

Input nodes

Color

Outputs:

• a 3 components RGB color.

Parameters:

• Color: the color to output.

Value

Outputs:

• a value between 0 and 1.

Parameters:

• Value: the value to output.

Image

Outputs:

• an image.

Parameters:

• File: the image file path.

Noise

Outputs:

• a Perlin noise image.

Parameters:

• Iterations: number of frequency iterations of the noise.
• Roughness: bluriness / roughness of the resulting noise.
• Frequency: noise frequency changes the noise appearance.
• Seed: enter different values to change the random seed of the noise.

Operator nodes

Add

Inputs:

• a first image A.
• a second image B.

Outputs:

• the addition of the two inputs. A + B.

Subtract

Inputs:

• a first image A.
• a second image B.

Outputs:

• the subtraction of the two inputs. A - B.

Multiply

Inputs:

• a first image A.
• a second image B.

Outputs:

• the multiplication of the two inputs. A * B.

Invert

Inputs:

• an image A.

Outputs:

• the invert of the input. 1 - A.

Mix

Inputs:

• a first image A.
• a second image B.
• a third image C to weight the mix between A and B.

Outputs:

• a linear interpolation between the two first inputs. A * C + B * ( 1 - C ).

Sample image

Inputs:

• an image A.
• a second image B used as U coordinate.
• a third image C used as V coordinate.

Outputs:

• a sampling of the image A at uv coordinates (B,C). tex( A, vec2(B,C) ).

Split

Inputs:

• an image A.

Outputs:

• a specified channel of the input image.

Parameters:

• Channel: the channel index of the input image to output. 0 for red, 1 for green, 2 for blue.

Gather

Inputs:

• an image A.
• an image B.
• an image C.
• an image D.

Outputs:

• an image made of the 4 channels of the 4 inputs. Red is taken from image A, green is taken from image B, blue is taken from image C, alpha is taken from image D.

Min

Inputs:

• an image A.
• an image B.

Outputs:

• the minimum between the two inputs. min( A, B ).

Max

Inputs:

• an image A.
• an image B.

Outputs:

• the maximum between the two inputs. max( A, B ).

Adjustment nodes

Clamp

Inputs:

• an image.

Outputs:

• the input image clamped between two values.

Parameters:

• Min: the min value under which the input is clamped.
• Max: the max value over which the input is clamped.

Levels

Inputs:

• an image.

Outputs:

• the input image after levels adjustments. Levels remap the image values.

Parameters:

• Input min: the minimum value for the remapping of input.
• Input max: the maximum value for the remapping of input.
• Output min: the minimum value for the remapping of output.
• Output max: the maximum value for the remapping of output.

Threshold

Inputs:

• an image.

Outputs:

• the input image after a threshold has been done. Everything under the treshold becomes black, everything over becomes white.

Parameters:

• Threshold: the treshold value.
• Smoothness: how smooth the threshold cut is. Do we go from black to white smoothly or not.

Gamma

Inputs:

• an image.

Outputs:

• the input image after gamma adjustment.

Parameters:

• Gamme: the gamma value.

HSL

Inputs:

• an image.

Outputs:

• the input image after hue, saturation and lightness adjustments.

Parameters:

• Hue: shift of the hue.
• Saturation: from -1 to fully desaturate to 1 to over-saturate.
• Lightness: change the lightness from -1 for black to 1 for white.

Brightness / Contrast

Inputs:

• an image.

Outputs:

• the input image after brightness and contrast adjustments.

Parameters:

• Brightness: value to adjust the brightness between -1 and 1.
• Contrast: value to adjust the contrast between -1 and 1.

Filter nodes

Gaussian blur

Inputs:

• an image.

Outputs:

• the input image after the gaussian blur has been applied.

Parameters:

• Radius: radius of the gaussian kernel in pixels.
• Strength: how blurry is the blur.

UV offset

Inputs:

• an image.

Outputs:

• the input image after translating its pixels horizontally and vertically.

Parameters:

• U offset: horizontal offset in number of pixels.
• V offset: vertical offset in number of pixels.

Graph editor