» AddonPack.Effects
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AddonPack.Effects

Here is how you prepare effects for the addonpack:

Provide a Shader Info

To provide the nodelist with information about a shader that others find it easier, you should use the following keywords at the beginning of the shader code:

//@author: yourname
//@help: this shader does very nice things
//@tags: tag1, tag2, tag3 ...
//@credits: the other guys name

Creating Pins

Writing a variable in the toplevel of the shader creates an input pin for you. For simple pin names you do not have to do anything special, just start with a capital letter:

float Alpha;

Creates a pin named 'Alpha' with default value 0.
Or:

float Alpha = 1;

This will create a pin named 'Alpha' with default value 1.
In case you have a more complex name for your pin write it like this:

float Alpha <string uiname="Alpha of Gradient Center";> = 1;

This will create a pin named 'Alpha of Gradient Center' with default value 1.
You can also tell the vvvv GUI to constrain the value:

float Alpha <float uimin=0.0; float uimax=1.0; string uiname="Alpha of Gradient Center";> = 1;

Creating Color Pins

Especially when porting shader-code from public libraries you will often notice that a code like

float4 cAmb <String uiname="Color";>  = {1, 1, 1, 1};

creates only a float input with 4 slices.
Just insert the Semantic

 : COLOR 

to get a 'real' ColorInput.

float4 cAmb : COLOR <String uiname="Color";>  = {1, 1, 1, 1};

Texture Transformations

If you want to transform a texture on a regular shape you would intuitively expect the center of rotation and scaling in the middle of the texture. But the default center of transform is the texture coordinate (0, 0), which is the upper left corner of your texture.
To counteract this, we provide the convenience sematic 'TEXTUREMATRIX' for you:

float4x4 tTex: TEXTUREMATRIX <string uiname="Texture Transform";>;

You should use this semantic every time when you intend to use the transform matrix if this pin to transform texture coordinates.

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Shoutbox

~4d ago

fleg: This Tuesday, Cologne: exhibition opening of "interwoven", textile disinformation patterns created with vvvv. https://fleg.de/news/exhibition-interwoven

~18d ago

manuelgonzalvez: Assimp nodes all broken afted Win Update w/exception "COM object that has been separated from its underlying RCW(...)"

~18d ago

manuelgonzalvez: @levi thanks would love to! anyway managed to get something similar working based on forum search and anthokio's patches.

~18d ago

levi: @ravasquez thanks. 31.2 x86 verrion worked. @manuelgonzalvez i have a dx11 projectTexture if u a want.

~20d ago

manuelgonzalvez: Anyone has a dx11 port of "projectedTexture" dx9 fx for projection mapping?

~20d ago

manuelgonzalvez: Anyone has a dx11 port of "projectedTexture" dx9 fx for projection mapping?

~20d ago

ravazquez: @levi not sure bout the ImagePack, but I believe VL.OpenCV should give you the same tools and should work with beta just fine

~20d ago

levi: anyone knows of a VVVVpacks.image that works for elliot's projector calibration patches?x64,dx11. always crashes v4 on solve.

~27d ago

Lorenz: VJing with GIFS: https://lorenzpotthast.de/gifjockey/ A fun little side project, that I first prototyped in v4 and now turned web-based ;)

~2mth ago

schlonzo: finally fixed in 4.8 nice1