Bug 55444

System Environment:
--------------------------
Arch:             x86_64
Platform:         Ivybridge
Libdrm:	(master)libdrm-2.4.39-9-g2426a6a7112ae62755408a371831eddbe2d89d99
Mesa:	(master)92b3a99ce5f54f2c692c8db5a0c471aac0ff7c82
Xserver:(master)xorg-server-1.13.0-24-g0b02150c27e98f996e10d7489f9f67a30e4e3497
Xf86_video_intel:(master)2.20.8-36-g8bfd31e9bb13bcb7f12e4147bec0da87b8e87dde
Libva_intel_driver:(staging)f557dd6ad06c31bcf787468e804c948ecc4cf39b
Kernel:	(drm-intel-nightly) c1926436fc12f43d1b60741405b666cd980e9f6d

Bug detailed description:
-------------------------
It fails on ivybridge with mesa master branch.It dosen't happen on mesa 9.0 branch.
Following cases also fail and have same bisect commit:
fbo_fbo-generatemipmap-filtering
fbo_fbo-generatemipmap-formats
glean_texEnv
shaders_glsl-fs-color-matrix
shaders_glsl-lod-bias
shaders_trinity-fp1
spec_ARB_framebuffer_object_framebuffer-blit-levels_draw_rgba
spec_ARB_framebuffer_object_framebuffer-blit-levels_read_rgba
spec_ARB_sampler_objects_sampler-objects
spec_ARB_texture_storage_texture-storage
spec_EXT_transform_feedback_generatemipmap_buffer
spec_EXT_transform_feedback_generatemipmap_discard
spec_EXT_transform_feedback_generatemipmap_prims_generated
spec_EXT_transform_feedback_generatemipmap_prims_written
spec_NV_conditional_render_generatemipmap
spec_OpenGL_1.4_fdo25614-genmipmap
spec_glsl-1.30_execution_fs-texelFetch-2D
spec_glsl-1.30_execution_fs-texelFetchOffset-2D
texturing_1-1-linear-texture
texturing_gen-nonzero-unit
texturing_gen-teximage
texturing_gen-texsubimage
texturing_getteximage-formats
texturing_getteximage-simple
texturing_texsubimage

Bisect shows:b1d0fe022dc4826dadce014ab8fe062a82f75a16 is the first bad commit
commit b1d0fe022dc4826dadce014ab8fe062a82f75a16
Author:     Chad Versace <chad.versace@linux.intel.com>
AuthorDate: Wed Sep 26 11:05:12 2012 -0700
Commit:     Chad Versace <chad.versace@linux.intel.com>
CommitDate: Thu Sep 27 07:35:53 2012 -0700

    intel: Fix segfault in intel_texsubimage_tiled_memcpy

    The function segfaulted when a game called glTexSubImage2D on a texture
    with internalformat/format/type = GL_SLUMINANCE8/GL_BGRA/GL_UNSIGNED_BYTE.

    The function only supports MESA_FORMAT_ARGB8888 and returns early if it
    detects an unsupported format. Clearly, its detection condition was
    insufficient. This patch fixes it to explicity check for
    MESA_FORMAT_ARGB8888.

    Note: This is a candidate for the 9.0 branch (fixes 413c491).
    Reviewed-and-tested-by: Kenneth Graunke <kenneth@whitecape.org>
    Acked-by: Paul Berry <stereotype441@gmail.com>
    Signed-off-by: Chad Versace <chad.versace@linux.intel.com>

output:
Probe at (25,25)
  Expected: 1.000000 0.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
  Mipmap level 0
  Using glCopyPixels()
  Matching src/dest texture formats
Probe at (25,25)
  Expected: 1.000000 0.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
  Mipmap level 0
  Using glRead/DrawPixels()
  Matching src/dest texture formats
Probe at (25,25)
  Expected: 1.000000 0.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 0.000000 1.000000
  Mipmap level 0
  Using glCopyPixels()
  Matching src/dest texture formats
  With pixel transfer enabled
Probe at (25,25)
  Expected: 1.000000 0.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 0.000000 1.000000
  Mipmap level 0
  Using glRead/DrawPixels()
  Matching src/dest texture formats
  With pixel transfer enabled
Probe at (25,25)
  Expected: 1.000000 0.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
  Mipmap level 0
  Using glCopyPixels()
  Different src/dest texture formats
Probe at (25,25)
  Expected: 1.000000 0.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
  Mipmap level 0
  Using glRead/DrawPixels()
  Different src/dest texture formats
Probe at (25,25)
  Expected: 1.000000 0.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 0.000000 1.000000
  Mipmap level 0
  Using glCopyPixels()
  Different src/dest texture formats
  With pixel transfer enabled
Probe at (25,25)
  Expected: 1.000000 0.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 0.000000 1.000000
  Mipmap level 0
  Using glRead/DrawPixels()
  Different src/dest texture formats
  With pixel transfer enabled
PIGLIT: {'result': 'fail' }

Reproduce steps:
----------------
1. start X
2. ./bin/fbo-mipmap-copypix -auto -fbo