<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - WebGL conformance2/reading/read-pixels-from-fbo-test.html fails" href="https://bugs.freedesktop.org/show_bug.cgi?id=94345#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - WebGL conformance2/reading/read-pixels-from-fbo-test.html fails" href="https://bugs.freedesktop.org/show_bug.cgi?id=94345">bug 94345</a> from <a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> Kenneth Graunke</a> <pre>I think there may be a bug in the test. The (RGB5_A1, RGBA, UNSIGNED_BYTE) case is giving this: FAIL Expected color = 127.5,0,178.5,255, was = 123,0,173,255 The first suspicious aspect is that these are 8-bit UNORM values, which are supposed to be integers between 0 and 255. But it's expecting 127.5 and 178.5...which are not integers. Reading the test, denormalizeColor() has a tolerance of 5 (tol = 5) for this case. 178.5 vs 173 would pass with a tolerance of 6. In other cases (unsigned short/int) it raises the tolerance to 40 to allow NVIDIA to pass. Also, with a 5-bit source value, being off by 1 results in a delta of 8. I think the tolerance should be raised.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>