ofxVVISF

Introduction

This openFrameworks addon wraps the VVISF-GL cpp library from VIDVOX. It allows you to use ISF files inside openFrameworks with a simple setup.

VVISF

ISF stands for "Interactive Shader Format", and is a file format that describes a GLSL fragment shader, as well as how to execute and interact with it (the official specification can be found here). VVISF is a cross-platform c++ library that implements the ISF protocol with support for a number of common SDKs (OS X, iOS, GLFW, and Qt) and GL environments (most versions of GL- both ES and desktop- are supported).

VVGL

VVGL is a small library that performs rudimentary GL rendering, focusing mainly on texture generation/pooling and render-to-texture operations. Its primary purpose is to provide a simple consistent interface for performing these basic GL operations while obfuscating any platform-specific or environment-specific GL implementation details. VVISF is built on top of VVGL, but you don't need to be intimately familiar with VVGL to use VVISF.

License

See License

Installation

• clone the addon into the openFrameworks/addons/ folder
• setup the submodule by running

``git submodule init` `git submodule update

 - Create a project with the project generator or create a projects by copying the examples
When creating a project you need to add preprocessor defines to enable the VVGL_SDK_GLFW flag.

 
Edit the command line options to add /bigobj
 
ESnjoy!
Examples
example-grabber

This example shows you how to use a ofVideoGrabber as a input source for an ISFScene.

example-fft

This example shows you how to use audio as an input source for an ISFScene.  It uses ofxFft to generate the 

fftImage` and the raw waveform to generate the `waveImage``. See the comments in the code to follow along.

example-chain

This example shows you how to chain multiple ISFScenes together in a VFX chain.

example-mixer

This example shows you how to simply mix between two ISFScenes

example-generator

This example shows you how to use an ISFScene with a generator.

example-transitions

This example shows you how to use multiple ISFScenes to feed a transition.

Compatibility

tested with 0.10+ VS2017

Known issues

Project generator might not work on macOS. testers welcome!

Version history

0.0.1 initial release