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Possible issue using filter() inside of PGraphics for Syphon in Processing? #41
Description
MacBook Pro Retina Mid-2015
OSX 11.5.1
Processing 3.5.4
I am using the Syphon Processing library and I have found a possible issue when it comes to using the filter() function inside of the PGraphics canvas for sending out frames via a Syphon Server.
I have noted that the filters used, BLUR & INVERT, do appear correctly in the Processing window however they do not appear to be sent out correctly in the Syphon output.
Is there a reason for this?
Possible solution or fix?
Or, should I try to apply the filters in a different manner altogether?
Thank you for any tips or help!
Please see code and screenshot below:
import codeanticode.syphon.*;
PGraphics canvas;
SyphonServer server;
void setup() {
size(400,400, P3D);
canvas = createGraphics(400, 400, P3D);
frameRate(30);
// Create syhpon server to send frames out.
server = new SyphonServer(this, "Processing Syphon");
}
void draw() {
canvas.beginDraw();
canvas.background(127);
canvas.lights();
canvas.translate(width/2, height/2);
canvas.rotateX(frameCount * 0.01);
canvas.rotateY(frameCount * 0.01);
canvas.box(150);
canvas.filter(INVERT);
canvas.filter(BLUR, 3);
canvas.endDraw();
image(canvas, 0, 0);
server.sendImage(canvas);
}
Activity
codeanticode commentedon Mar 12, 2022
It's actually the same as #32, since mask() just calls filter(). I think it's an upstream bug in the OpenGL renderer in Processing.
CaseyJNova commentedon Mar 13, 2022
Nice work I appreciate the follow up. I took a look at #32 and found that to be a helpful description of the problem with the ordering of the "server.sendImage(canvas);" in the beginning being rather helpful.
I did notice that if I put it at the very start the Syphon output was good but the Processing window would be null. So I put it just after beginDraw()
The code below works great now and is shown in the screenshot.