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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] Many Piglit multisample tests fail"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90422#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] Many Piglit multisample tests fail"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90422">bug 90422</a>
from <span class="vcard"><a class="email" href="mailto:neil@linux.intel.com" title="Neil Roberts <neil@linux.intel.com>"> <span class="fn">Neil Roberts</span></a>
</span></b>
<pre>I can make the test pass by causing a flush in PatternRender::draw in between
where it renders to the texture and then calls glBlitFramebuffer to sample from
it with some gdb commands like this:
b formats.cpp:326
commands 1
call intel_batchbuffer_emit_mi_flush(_glapi_Context)
c
end
This is mysterious because Mesa does seem to do its own flush when a buffer is
switched from rendering to sampling in brw_render_cache_set_check_flush and
this does seem to successfully call intel_batchbuffer_emit_mi_flush. I thought
maybe it's something about needing to flush twice but I tried duplicating the
call to intel_batchbuffer_emit_mi_flush in that function and that doesn't solve
it.</pre>
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