<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Exchange Server"> <style></style> </head> <body> <meta content="text/html; charset=UTF-8"> <style type="text/css" style="">  </style> <div dir="ltr"> <div id="x_divtagdefaultwrapper" style="font-size:12pt; color:#000000; background-color:#FFFFFF; font-family:Calibri,Arial,Helvetica,sans-serif"> If you have an Nvidia card and are using a sufficiently new version of opengl you can debug shaders in Visual Studio, but those are some significant limitations. It would also be nice to have a reference driver to help distinguish buggy driver behavior.</div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> ibmirkin@gmail.com <ibmirkin@gmail.com> on behalf of Ilia Mirkin <imirkin@alum.mit.edu><br> <b>Sent:</b> Thursday, July 14, 2016 12:34:26 PM<br> <b>To:</b> Rob Conde<br> <b>Cc:</b> Roland Scheidegger; mesa-dev@lists.freedesktop.org<br> <b>Subject:</b> Re: [Mesa-dev] GLSL Debugging</font> <div> </div> </div> </div> <font size="2"><span style="font-size:10pt;"> <div class="PlainText">Note that various GPUs (definitely NVIDIA ones, but I think others<br> too) also include instruction stepping/breakpoints/etc functionality.<br> However it's never been clear to me how that sort of thing could be<br> effectively exposed to userspace.<br> <br> -ilia<br> <br> <br> On Thu, Jul 14, 2016 at 12:29 PM, Rob Conde <rob.conde@ai-solutions.com> wrote:<br> > I'll take a look at that. The idea would be to be able to step through a<br> > shader and watch values etc.<br> ><br> ><br> > Rob<br> ><br> > ________________________________<br> > From: Roland Scheidegger <sroland@vmware.com><br> > Sent: Thursday, July 14, 2016 12:26:58 PM<br> > To: Rob Conde; mesa-dev@lists.freedesktop.org<br> > Subject: Re: [Mesa-dev] GLSL Debugging<br> ><br> > Am 14.07.2016 um 15:25 schrieb Rob Conde:<br> >> Hello,<br> >><br> >> It occurred to me that the llvmpipe might be a good basis for a GLSL<br> >> debugger. Has anyone thought about this and how it might be approached?<br> >><br> >><br> >> Rob Conde<br> ><br> > I'm not entirely sure what exactly you want to debug, but if you just<br> > want to know what happens inside a shader softpipe is MUCH easier to<br> > follow with the interpreted shaders. Maybe llvmpipe is easier (at least<br> > for some things) than real hardware but investigating the jitted<br> > assembly is not that easy.<br> ><br> > Roland<br> ><br> ><br> > _______________________________________________<br> > mesa-dev mailing list<br> > mesa-dev@lists.freedesktop.org<br> > <a href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a><br> ><br> </div> </span></font> </body> </html>