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Index › Programming Questions & Help › OpenGL and 3D Libraries › PGraphicsOpenGL image leak
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PGraphicsOpenGL image leak (Read 8028 times)
gabon
Re: PGraphicsOpenGL image leak
Reply #15 - Jun 12th, 2007, 12:57am  
mmm, it doesn't seem  to work Sad

chr
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{Christian Giordano's site and blog}
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V
Re: PGraphicsOpenGL image leak
Reply #16 - Jun 12th, 2007, 10:19am  
remember that you'll need to change the code so that '_id' becomes '_id[0]'

ill write a demo and put it online tonight when i get home
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Victor Martins | www.pixelnerve.com/v
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gabon
Re: PGraphicsOpenGL image leak
Reply #17 - Jun 12th, 2007, 10:29am  
I'm quite sure I tried replacing _id with 1 and didn't work. I look forward for the example Smiley

Thanks a lot! chr
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V
Re: PGraphicsOpenGL image leak
Reply #18 - Jun 14th, 2007, 11:53pm  
sorry gabon, i havent had the time to put the demo online..
i hope to have it on tomorrow.
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Victor Martins | www.pixelnerve.com/v
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V
Re: PGraphicsOpenGL image leak
Reply #19 - Jun 15th, 2007, 6:51pm  
www.nothing.scene.org/p5/p5data/heightmap_src.zip

here's an fx i created for an old visuals app i call performer.. using sonia and it includes rendertotexture class+sample.
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Victor Martins | www.pixelnerve.com/v
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gabon
Re: PGraphicsOpenGL image leak
Reply #20 - Jun 16th, 2007, 2:55pm  
wow, it seems to be definitely what I was looking for. Many OpenGL functions I should study but it will be very useful. Thanks a lot, chr
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janebeta7
Re: PGraphicsOpenGL image leak
Reply #21 - Mar 21st, 2010, 5:12pm  
V wrote on Jun 15th, 2007, 6:51pm:
www.nothing.scene.org/p5/p5data/heightmap_src.zip

here's an fx i created for an old visuals app i call performer.. using sonia and it includes rendertotexture class+sample.


Hi V
I download your example to use tenderTotexture, i need that to save a screenshot to a texture, transform this move one pixel of the screen to the left ( pixel shift ) and again put the texture in the screen , all with opengl

this

but your example does'nt work for me , the window appear white..

this is the code  i want to do that in OPENGL Smiley
Code:



void setup(){
  size(1024,768);
  smooth();
  background(0);
  noCursor();

}
void draw(){
  fill(255);
  ellipse(mouseX,mouseY,100,100);
  pixelShift(1,0);
}


void pixelShift(int xshift, int yshift) {
  loadPixels();
  for (int y=1; y < height; y++) {
    for (int x=1; x < width; x++){
	if ((x+xshift < width) && (x+xshift > 0)) {
	  if ((y+yshift < height) && (y+yshift > 0)) {
	    pixels[x + (y*width)] = pixels[(x+xshift)+ ((y+yshift)*width)];
	  }
	}

    }
  }
  updatePixels();
}


thank you!
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V
Re: PGraphicsOpenGL image leak
Reply #22 - Mar 22nd, 2010, 1:45am  
opengl is a bit different but you can get the picture..
here is an example on feedback using opengl

www.pixelnerve.com/_SANDBOX.zip

have fun
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Victor Martins | www.pixelnerve.com/v
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janebeta7
Re: PGraphicsOpenGL image leak
Reply #23 - Mar 22nd, 2010, 6:55am  
Victor! a lot of thanks! i'm going to study the code! GREAT!!!!!!!!!
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janebeta7
Vitamin library Sketch does't work in Windows
Reply #24 - Mar 22nd, 2010, 3:12pm  
V wrote on Mar 22nd, 2010, 1:45am:
opengl is a bit different but you can get the picture..
here is an example on feedback using opengl

www.pixelnerve.com/_SANDBOX.zip

have fun

Hi Victor, something strange.. Your sketch works for me in  MAC OS X Leopard, in an iMac, but not work in PC Windows ..

look the result...

http://goview.com/?id=dcba5229-42a6-4c18-96ed-076e6a6b414c
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V
Re: PGraphicsOpenGL image leak
Reply #25 - Mar 22nd, 2010, 4:01pm  
hmm probably because your videocard is not handling the texture. should use rectangle textures if available for NPOT dimensions

for a simple test try creating a texture with a power-of-two size.. say 512*512.

anyway, i have updated the file to check for rect textures. same link as posted above.

(also make sure you update the Vitamin lib. its included in the zip. same as before)
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Victor Martins | www.pixelnerve.com/v
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janebeta7
Re: PGraphicsOpenGL image leak
Reply #26 - Mar 22nd, 2010, 4:21pm  
Victor, perfect!  Now works in windows

! I'm going to make some things with your code with more graphics elements. the ellipse it was just a test Smiley


Thanks very much
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