yes, i had checked that my card supported floats. I've just come across another issue with the '<span class="Apple-style-span" style="font-family: 'Lucida Grande'; font-size: 12px; ">jit.gl.slab.float.maxpat' patch which i guess is related to the float issue. i get these error messages when starting the patch:</span><div>
<span class="Apple-style-span" style="font-family: 'Lucida Grande'; font-size: 12px;"><br></span></div><div><span class="Apple-style-span" style="font-family: 'Lucida Grande'; font-size: 12px;"><br></span></div>
<div><span class="Apple-style-span" style="font-family: 'Lucida Grande'; font-size: 12px;"><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica">jit.gl.pbuffer: error binding invalid pbuffer!</p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica">jit.gl.texture: error binding readback mechanism for capture!</p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><br></p>
</span>then max crashes when i close the patch.</div><div><br></div><div>in relation to the fbo issue then, is it a good idea to be using fbo readback for each episode of jitter? my card does support fbos. .</div><div><br>
</div><div>pelado</div><div><br><div class="gmail_quote">On Thu, May 1, 2008 at 6:44 PM, Joshua Kit Clayton <<a href="mailto:jkc@musork.com">jkc@musork.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<br>
Sorry for jumping the trigger on that one. I double checked <a href="http://developer.apple.com/graphicsimaging/opengl/capabilities/" target="_blank">http://developer.apple.com/graphicsimaging/opengl/capabilities/</a> and your card *does* support float pixels. We'll try to reproduce your crash.<div class="Ih2E3d">
<br>
<br>
<br>
On May 1, 2008, at 5:43 AM, pelado wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8x;border-left:1px #ccc solid;padding-left:1ex">
<br>
presumably when a message is sent to jitter to use the fbo the set up for the object is injected into the rendering process. But, if this operation speeds up rendering why not use it all the time in place of other the other options? why does it need an explicit instruction? or are there occasions when using a fbo is pointless, eg when not using depth testing?<br>
</blockquote>
<br>
<br>
<br></div>
We don't use fbo as the default case as it has issues on certain graphics cards. We leave the various backends for advanced users to experiment with.<br><font color="#888888">
<br>
-Joshua</font><div><div></div><div class="Wj3C7c"><br>
_______________________________________________<br>
jitter mailing list<br>
<a href="mailto:jitter@cycling74.com" target="_blank">jitter@cycling74.com</a><br>
<a href="http://www.cycling74.com/mailman/listinfo/jitter" target="_blank">http://www.cycling74.com/mailman/listinfo/jitter</a><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br><a href="http://www.pelado.co.uk">http://www.pelado.co.uk</a>
</div>