System Environment: -------------------------- Platform: bdw Libdrm: (master)libdrm-2.4.56-10-g22b995d8cbf1059535c5de5ba1869c1623ae5b08 Mesa: (master)306e421887720b149be77c749108bcffcebe34f6 Xserver: (master)xorg-server-1.15.99.902-121-g2f5cf9ff9a0f713b7e038636484c77f113a5f10a Xf86_video_intel:(master)2.99.914-68-gd209b03915e4d12ce445d72ac09bb4fe664ba664 Libva: (master)acfcd5f0637a951d50c5112c7dfbd46f1d0dcdb3 Libva_intel_driver:(master)f3f49f2f0e6b3669d9b09341a11cf0b96e138674 Kernel: (drm-intel-nightly)257d90d13794c2eb545ab0d6c708f21e2a0378b6 ug detailed description: --------------------------- It fails on BDW with mesa master branch, works well on Mesa 10.3 branch. The latest known bad commit 306e421887720b149be77c749108bcffcebe34f6 The latest known good commit f80c6847e969016596b5ce3202236c15663cc61a (It has bug 82929, bisect is slow) output: FBO attachment = TEXTURE, result = pass Floating point exception (core dumped) (gdb) bt #0 0x00007ffff3d53344 in get_fast_clear_rect (irb=<optimized out>, rect=0x7fffffffdf50, fb=0x84c330, brw=0x7ffff39d7038) at brw_meta_fast_clear.c:310 #1 brw_meta_fast_clear (brw=brw@entry=0x7ffff39d7038, fb=fb@entry=0x84c330, buffers=buffers@entry=256, partial_clear=partial_clear@entry=false) at brw_meta_fast_clear.c:512 #2 0x00007ffff3d0dc00 in brw_clear (ctx=0x7ffff39d7038, mask=256) at brw_clear.c:246 #3 0x000000000040185f in test_builtin_sample_mask (ms_fbo=...) at /GFX/Test/Piglit/piglit/tests/spec/arb_sample_shading/execution/builtin-gl-sample-mask.cpp:191 #4 0x0000000000401ad7 in piglit_display () at /GFX/Test/Piglit/piglit/tests/spec/arb_sample_shading/execution/builtin-gl-sample-mask.cpp:228 #5 0x00007ffff7d84baa in run_test (gl_fw=0x604010, argc=2, argv=0x7fffffffe288) at /GFX/Test/Piglit/piglit/tests/util/piglit-framework-gl/piglit_winsys_framework.c:78 #6 0x00007ffff7d6a205 in piglit_gl_test_run (argc=2, argv=0x7fffffffe288, config=0x7fffffffe150) at /GFX/Test/Piglit/piglit/tests/util/piglit-framework-gl.c:151 #7 0x00000000004014cd in main (argc=2, argv=0x7fffffffe288) at /GFX/Test/Piglit/piglit/tests/spec/arb_sample_shading/execution/builtin-gl-sample-mask.cpp:44 Reproduce steps: ---------------------------- 1. xinit 2. bin/arb_sample_shading-builtin-gl-sample-mask 2 -auto
Bisect shows: 2f28a0dc23165123cf1e8b5942acad37878edd8a is the first bad commit commit 2f28a0dc23165123cf1e8b5942acad37878edd8a Author: Kristian Høgsberg <krh@bitplanet.net> AuthorDate: Mon Jul 7 16:44:58 2014 -0700 Commit: Kristian Høgsberg <krh@bitplanet.net> CommitDate: Fri Aug 15 11:25:47 2014 -0700 i965: Implement fast color clears using meta operations This patch uses the infrastructure put in place by previous patches to implement fast color clears and replicated color clears in terms of meta operations. This works all the way back to gen7 where fast clear was introduced and adds support for fast clear on gen8. It replaces the blorp path completely and improves on a few cases. Layered clears are now done using instanced rendering and multiple render-target clears use a MRT shader with rep16 writes. Signed-off-by: Kristian Høgsberg <krh@bitplanet.net> Acked-by: Kenneth Graunke <kenneth@whitecape.org>
*** Bug 83082 has been marked as a duplicate of this bug. ***
*** Bug 83083 has been marked as a duplicate of this bug. ***
It also happens on 10.3 branch.
Patch on mailing list: http://lists.freedesktop.org/archives/mesa-dev/2014-August/066917.html
Fixed by: commit e34a363a781a24b2cf6930c4d37f781ffec8a19a Author: Kenneth Graunke <kenneth@whitecape.org> Date: Fri Aug 29 15:15:43 2014 -0700 i965: Add 2x MSAA support to Broadwell fast clear code. According to the cited documentation section (but in the newer docs), x_scaledown is the same for 2x and 4x MSAA. +47 piglits. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83081 Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Matt Turner <mattst88@gmail.com> Cc: "10.3" <mesa-stable@lists.freedesktop.org>
Fixed on master branch.
And this has been picked to the 10.3 branch: commit 8ef3d4fe03de1b370e255a3c900719a8cce59599 Author: Kenneth Graunke <kenneth@whitecape.org> Date: Fri Aug 29 15:15:43 2014 -0700 i965: Add 2x MSAA support to Broadwell fast clear code. According to the cited documentation section (but in the newer docs), x_scaledown is the same for 2x and 4x MSAA. +47 piglits. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83081 Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Matt Turner <mattst88@gmail.com> Cc: "10.3" <mesa-stable@lists.freedesktop.org> (cherry picked from commit e34a363a781a24b2cf6930c4d37f781ffec8a19a)
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