Hi Jose,<div><br></div><div> Thanks for your reply. Tried that but it complains saying cannot find wrappers /egltrace.so . I have checked the wrappers folder and it doesn't have any egltrace.so <div><br></div><div>reg,</div> <div>kalyan<br><br><div class="gmail_quote">On Thu, Jan 12, 2012 at 12:56 PM, José Fonseca <span dir="ltr"><<a href="mailto:jose.r.fonseca@gmail.com">jose.r.fonseca@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="HOEnZb"><div class="h5">On Thu, Jan 12, 2012 at 9:40 AM, kalyan reddy <<a href="mailto:kalyanreddy2005@gmail.com">kalyanreddy2005@gmail.com</a>> wrote:<br> > Hi,<br> ><br> > I am a new user to api trace. I have been trying to get a trace out of<br> > chromium(when using webgl) on meego. I have used the following command :<br> ><br> > apitrace trace "..<apppath>/chromium-browser" --user-gl=egl<br> > --ignore-gpu-blacklist<br> > http:://<a href="http://webglsamples.googlecode.com/hg/field/field.html" target="_blank">webglsamples.googlecode.com/hg/field/field.html</a><br> ><br> > chromium is launched and I can see the fps and field page correctly. I close<br> > the browser and return to terminal. I cannot find any .trace file nor any<br> > errors are shown up. Any tips??<br> ><br> > reg,<br> > kalyan<br> ><br> </div></div>> _______________________________________________<br> > apitrace mailing list<br> > <a href="mailto:apitrace@lists.freedesktop.org">apitrace@lists.freedesktop.org</a><br> > <a href="http://lists.freedesktop.org/mailman/listinfo/apitrace" target="_blank">http://lists.freedesktop.org/mailman/listinfo/apitrace</a><br> ><br> <br> There are several things to keep in mind here:<br> - chrome does a lot of inter-process comunnication, so it is important<br> to ensure that the renderer process is forked from the right parent<br> and actually gets the LD_PRELOAD environment variable. There are some<br> chrome options that help (--temp-profile --user-data-dir<br> --single-process)<br> - when tracing EGL you need to run apitrace trace --api egl ....<br> <br> This works for me when using GL:<br> <br> $ ./apitrace trace --api gl chromium --temp-profile<br> --ignore-gpu-blacklist<br> <a href="http://webglsamples.googlecode.com/hg/field/field.html" target="_blank">http://webglsamples.googlecode.com/hg/field/field.html</a><br> apitrace: redirecting dlopen("libGL.so.1", 0x1)<br> apitrace: tracing to /home/jfonseca/projects/apitrace/chromium.2.trace<br> apitrace: warning: unknown function "glBindFragDataLocationIndexedARB"<br> apitrace: warning: unknown function "glBlitFramebufferANGLE"<br> apitrace: warning: unknown function "glEGLImageTargetTexture2DOES"<br> apitrace: warning: unknown function "glRenderbufferStorageMultisampleANGLE"<br> apitrace: redirecting dlopen("libGL.so.1", 0x102)<br> [3:3:555073509122:ERROR:nss_util.cc(394)] Error initializing NSS<br> without a persistent database: libsoftokn3.so: cannot open shared<br> object file: Permission denied<br> apitrace: redirecting dlopen("libGL.so.1", 0x1)<br> apitrace: tracing to /home/jfonseca/projects/apitrace/chromium.3.trace<br> apitrace: warning: unknown function "glBindFragDataLocationIndexedARB"<br> apitrace: warning: unknown function "glBlitFramebufferANGLE"<br> apitrace: warning: unknown function "glEGLImageTargetTexture2DOES"<br> apitrace: warning: unknown function "glRenderbufferStorageMultisampleANGLE"<br> apitrace: redirecting dlopen("libGL.so.1", 0x102)<br> <br> And this *should* work for EGL:<br> <br> $ ./apitrace trace --api egl chromium --temp-profile --user-gl=egl<br> --ignore-gpu-blacklist<br> <a href="http://webglsamples.googlecode.com/hg/field/field.html" target="_blank">http://webglsamples.googlecode.com/hg/field/field.html</a><br> <br> But by some reason chrome on my system refuses to use EGL, and always<br> uses GL, so it doesn't. But that's a chrome issue, and not apitrace's.<br> <br> Jose<br> </blockquote></div><br></div></div>