oli larkin

i just tried my jitter js patch (made on my Mac) on my PC. I found that the drawing order in the sketch was reversed. Is there an easy way to remedy this? I am using ortho = 2 and the "painter's algorhythm"(no z depth). Reversing the camera doesn't work.

My mac is and ibook and I have an ATI radeon 9600 graphics card on my PC. Could this differ depending on what gfx card was used?

gl-draw-order-differences-on-xp-and-osx

Everytime you save your patch, object order in the patcher is 

reversed (for the curious reader, open as text and keep saving and 

reloading to see how this is the case). This is a long time Max 

In automatic mode, patcher order makes a difference without depth 

buffering. When not using depth buffering, I would recommend turning 

automatic off and draw each object explicitly using bangs. We might 

add a "layer" attribute to jit.gl.* objects in a future version to 

support ordering in automatic mode independent of patcher order, but 

for the meantime the technique suggested is what you'll need to do.

Everytime you save your patch, object order in the patcher is  
reversed (for the curious reader, open as text and keep saving and  
reloading to see how this is the case). This is a long time Max  
idiosyncrasy.

In automatic mode, patcher order makes a difference without depth  
buffering. When not using depth buffering, I would recommend turning  
automatic off and draw each object explicitly using bangs. We might  
add a "layer" attribute to jit.gl.* objects in a future version to  
support ordering in automatic mode independent of patcher order, but  
for the meantime the technique suggested is what you'll need to do.

thanks for your reply joshua. I'm doing all of this in javascript so i thought that the order would be the same on both systems. Unfortunately i have to use automatic = 0 to draw multiple text labels around the screen.

Well without seeing an example, I can't offer more feedback. I would 

like to encourage as often as possible that people present patch 

examples with steps to reproduce behavior. Otherwise, there is less 

of a chance that anyone will be able to offer insight.

Well without seeing an example, I can't offer more feedback. I would  
like to encourage as often as possible that people present patch  
examples with steps to reproduce behavior. Otherwise, there is less  
of a chance that anyone will be able to offer insight.

http://www.oli.adbe.org/downloads/intlib_05.zip

the file that contains the drawing code in question is 

on windows XP everything is drawn in exactly the opposite order to on OS X. I have tried reversing the camera but it didn't help.

sorry I can't provide a smaller example file.

the file that contains the drawing code in question is 
int.libsupporti_ispace.js 

i found that by reversing the order of the drawing commands the interface will draw correctly. I'd rather not have to make to seperate js files for mac and windows tho, i'm sure there must be an easier way.

I haven't had a problem drawing with OpenGL in jsui, using the same 

code on both Windows and Mac. Are you talking about jsui or js 

I haven't had a problem drawing with OpenGL in jsui, using the same  
code on both Windows and Mac.  Are you talking about jsui or js  
jitter objects?

>Are you talking about jsui or js jitter objects?

What is shown below draws the black circles on top of the red circles on OSX and vice-versa on XP. Also, on OSX the red circles are semi transparent, on XP they are opaque. Am I using automatic mode in the wrong way?

I suppose I could include two different sets of drawing functions in the js but this seems a bit messy (there is a lot of drawing code).

// Jitter Stuff ----------------------------

//-------------------------------------------

var mywindow = new JitterObject("jit.window","space");

var myrender = new JitterObject("jit.gl.render","space");

var mysketch = new JitterObject("jit.gl.sketch","space");

            moveto([-1+(i*0.5),0.,0.]);

            //draw red circle

            glcolor([1.,0.,0.,0.7]);

            //draw black inner circle

            glcolor([0.,0.,0.,1]);

What is shown below draws the black circles on top of the red circles on OSX and vice-versa on XP. Also, on OSX the red circles are semi transparent, on XP they are opaque. Am I using automatic mode in the wrong way?
I suppose I could include two different sets of drawing functions in the js but this seems a bit messy (there is a lot of drawing code).

// Jitter Stuff ----------------------------
//-------------------------------------------
var mywindow = new JitterObject("jit.window","space");
mywindow.depthbuffer = 0;
mywindow.fsmenubar = 0;

var myrender = new JitterObject("jit.gl.render","space");
myrender.ortho = 2;
myrender.erase_color = [1,1,1,1];

var mysketch = new JitterObject("jit.gl.sketch","space");
mysketch.blend_enable = 1;
mysketch.antialias = 1;
mysketch.automatic = 0;

function bang()
{
	myrender.erase();
	mysketch.reset();
	mysketch.shapeslice(30,1);

	for (i = 0;i < 5; i++)
	{       		
		with(mysketch)
		{
			moveto([-1+(i*0.5),0.,0.]);

			//draw red circle
			glcolor([1.,0.,0.,0.7]);
			circle(0.3);

			//draw black inner circle
			glcolor([0.,0.,0.,1]);
			circle(0.05);
		}
	}

	mysketch.draw();
	myrender.drawswap();
}


you(we actually) were lucky with this one: the problem seems to be in 

depth_enable beeing 1 by default, so adding mysketch.depth_enable = 0 solved 

you(we actually) were lucky with this one: the problem seems to be in 
depth_enable beeing 1 by default, so adding mysketch.depth_enable = 0 solved 
problems here.

GL draw order differences on XP and OSX