<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - The big SKQP bug" href="https://bugs.freedesktop.org/show_bug.cgi?id=105301#c37">Comment # 37</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - The big SKQP bug" href="https://bugs.freedesktop.org/show_bug.cgi?id=105301">bug 105301</a> from <a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> Kenneth Graunke</a> <pre>Created <a href="attachment.cgi?id=142291" name="attach_142291" title="apitrace of mixedtextblobs test">attachment 142291</a> <a href="attachment.cgi?id=142291&action=edit" title="apitrace of mixedtextblobs test">[details]</a> apitrace of mixedtextblobs test (In reply to Dongseong Hwang from <a href="show_bug.cgi?id=105301#c36">comment #36</a>) > Thank you for all quick response and fixing this issue. > > Kenneth, I carefully checked skqp. skia never do something wrong. I have attached an apitrace of mixedtextblobs. unxz then apitrace dump mixedtextblobs.trace to see the GL calls it's making. 3794 glBlendFunc(sfactor = GL_ONE, dfactor = GL_ONE_MINUS_SRC1_COLOR) ... 3804 glDrawRangeElements(mode = GL_TRIANGLES, start = 0, end = 47, count = 72, type = GL_UNSIGNED_SHORT, indices = NULL) ... 3808 glUseProgram(program = 4) ... 3836 glDrawRangeElements(mode = GL_TRIANGLES, start = 0, end = 33, count = 90, type = GL_UNSIGNED_SHORT, indices = 0xad4) 3838 glEnable(cap = GL_SAMPLE_SHADING) 3841 glUseProgram(program = 7) ... 3853 glDrawRangeElements(mode = GL_TRIANGLES, start = 0, end = 95, count = 96, type = GL_UNSIGNED_SHORT, indices = 0xba0) Call #3853 does a draw with GL_ONE_MINUS_SRC1_COLOR and program 7, which is the "discard" program, which only writes one color, triggering undefined behavior. I'm not making this up. :(</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>