ofxPostProcessing addon for openFrameworks

7th of January 2013

ARVE Error: Mode: lazyload not available (ARVE Pro not active?), switching to normal mode

I’ve recently been working on a tool for creating realtime visuals for music events. More details to follow soon about that, but for now I wanted to release the post processing framework that I created for it.

ofxPostProcessing is an openFrameworks addon that gives you an easy way of putting together a chain of GLSL shaders. At the moment, it comes with the following effects (some ported from other sources and some original) that I’ll gradually add to over time:

Bloom
Convolution (Blur)
Depth of field (with bokeh)
Depth of field alternative (more features but heavier)
Frei-Chen Edge Detector
FXAA anti-aliasing
Kaleidoscope
Noise warp
Pixelate
SSAO
Toon
Godrays
Tilt shift
Fake subsurface scattering
Many others, please see src directory

Usage instructions and source code can be found here: https://github.com/neilmendoza/ofxPostProcessing.git

Comments (8)

John
February 10, 2013 Reply
This is great, Neil. I’m looking at the example and it appears that the processing happens on rendered objects. Does this also work for videos?

neil
February 10, 2013 Reply
Hi John, thanks, glad it’s useful. It works fine for videos, the only thing to bear in mind is that the depth of field won’t work as it uses the depth buffer. It will just blur the video based on how far away from the camera you draw the video quad in 3D space.

felix
May 9, 2013 Reply
This looks perfect! Do you mind providing install instructions for those of us starting out in OFx land? Thanks!

neil
May 11, 2013 Reply
Hi Felix, you need to get the addon from here – https://github.com/neilmendoza/ofxPostProcessing – and put it in your addons folder. You can then use the OF project generator to create a project that you can use it in. There’s a tutorial about using the project generator here – http://www.openframeworks.cc/tutorials/introduction/002_projectGenerator.html.

Rick
August 30, 2013 Reply
I tried this on Windows 7 x64 with Code::Blocks 12.11 and OF 0.8.0 on a GeForce GTX 560 Ti with an ofVboMesh. Everything is rendered upside down and at least some of the shaders seem to be doing odd stuff. I also get the following errors:
[notice ] ofFbo: checkGLSupport(): maxColorAttachments: 8, maxDrawBuffers: 8, maxSamples: 32
[ error ] ofGLUtils: ofGetGlTypeFromInternal(): unknown internal format 34842, returning GL_UNSIGNED_BYTE
[ error ] ofGLUtils: ofGetGLFormatFromInternal(): unknown internal format 34842, returning GL_RGBA
[notice ] ofFbo: checkGLSupport(): maxColorAttachments: 8, maxDrawBuffers: 8, maxSamples: 32
[ error ] ofGLUtils: ofGetGlTypeFromInternal(): unknown internal format 34842, returning GL_UNSIGNED_BYTE
[ error ] ofGLUtils: ofGetGLFormatFromInternal(): unknown internal format 34842, returning GL_RGBA
[notice ] ofFbo: checkGLSupport(): maxColorAttachments: 8, maxDrawBuffers: 8, maxSamples: 32
[ error ] ofGLUtils: ofGetGlTypeFromInternal(): unknown internal format 34842, returning GL_UNSIGNED_BYTE
[ error ] ofGLUtils: ofGetGLFormatFromInternal(): unknown internal format 34842, returning GL_RGBA
Another note, I commented out an assert(…) in LUTPass.cpp (I believe) to get it to compile.

neil
September 23, 2013 Reply
Were you using my branch – https://github.com/neilmendoza/ofxPostProcessing – or a fork? There was some code in another fork that seemed to be causing similar errors.

Stefan Goodchild
September 13, 2013 Reply
Brilliant work, not had a chance to play yet but this is really exciting. I’ve always struggled with the GLSL side of things, particularly all the lighting stuff. Seen a fork as well with loads more fun things in it… https://github.com/satcy/ofxPostProcessing. I’d love to see shadow mapping, that would be amazing and probably complete the set of things most people would use day to day.

neil
September 23, 2013 Reply
Thanks! I just merged in the extra effects from satcy’s fork.

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ofxPostProcessing addon for openFrameworks