http://bugs.freedesktop.org/show_bug.cgi?id=13834
Summary: [i915 TTM 64bit] Glean case blendFunc failed (sometimes
hangs system)
Product: Mesa
Version: unspecified
Platform: x8664 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/i915
AssignedTo: eric@...
ReportedBy: shuang.he@...
CC: dridevel@...
System Environment:

Platform: FC6
Xf86_video_intel:96246c27cb836bae8ee02c46c68a1f2102efd14b
Mesa:aac2d99dc316c069faa46dd43ff034155754c6b3
DRM:b9417f41418321d5081547a3a3386dcccae7541f
Kernel:2.6.23
Bug detailed description:

this issue doesn't happen when INTEL_NO_TTM is set
this issue doesn't happen on 965
Reproduce steps:

start X
run glean case blendFunc by:
./glean r log t +blendFunc
Current result:

get many FAILURE:
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 33
source factor = GL_DST_COLOR, dest factor = GL_ONE_MINUS_DST_ALPHA
Readback had 0 bits in error; blending had 7.83184 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 33
source factor = GL_ONE_MINUS_DST_COLOR, dest factor =
GL_ONE_MINUS_SRC_A LPHA
Readback had 0 bits in error; blending had 7.94538 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 33
source factor = GL_ONE_MINUS_SRC_ALPHA, dest factor = GL_ZERO
Readback had 7.32757 bits in error; blending had 0 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 33
source factor = GL_ONE_MINUS_SRC_ALPHA, dest factor =
GL_ONE_MINUS_SRC_C OLOR
Readback had 7.8322 bits in error; blending had 7.4847 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 33
source factor = GL_SRC_ALPHA_SATURATE, dest factor = GL_ZERO
Readback had 0 bits in error; blending had 7.78216 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 34
source factor = GL_ONE, dest factor = GL_SRC_COLOR
Readback had 7.94816 bits in error; blending had 6.38069 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 34
source factor = GL_DST_COLOR, dest factor = GL_ONE
Readback had 0 bits in error; blending had 5.57889 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 34
source factor = GL_ONE_MINUS_DST_COLOR, dest factor =
GL_ONE_MINUS_SRC_C OLOR
Readback had 0 bits in error; blending had 6.45012 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 34
source factor = GL_SRC_ALPHA, dest factor = GL_SRC_COLOR
Readback had 0 bits in error; blending had 6.11057 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 34
source factor = GL_ONE_MINUS_SRC_ALPHA, dest factor = GL_ZERO
Readback had 7.91854 bits in error; blending had 0 bits in error.
blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 34
source factor = GL_ONE_MINUS_SRC_ALPHA, dest factor = GL_SRC_ALPHA
Readback had 7.37197 bits in error; blending had 7.1102 bits in error.
blendFunc: FAIL rgba8, win+pmap, id 100
source factor = GL_ZERO, dest factor = GL_ZERO
Readback had 7.73357 bits in error; blending had 0 bits in error.
blendFunc: FAIL rgba8, win+pmap, id 100
source factor = GL_ZERO, dest factor = GL_ONE_MINUS_SRC_COLOR
Readback had 0 bits in error; blending had 7.88418 bits in error.
blendFunc: FAIL rgba8, win+pmap, id 100
source factor = GL_DST_COLOR, dest factor = GL_SRC_ALPHA
Readback had 0 bits in error; blending had 4.85111 bits in error.
blendFunc: FAIL rgba8, win+pmap, id 100
source factor = GL_DST_COLOR, dest factor = GL_ONE_MINUS_DST_ALPHA
Readback had 7.91254 bits in error; blending had 6.85438 bits in error.
Expected result:

Glean case blendFunc should pass

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