[Mesa-dev] [Bug 91314] The Witcher 2 (native) fails to start, throws "Assertion `img->_BaseFormat != -1' failed."

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91314

            Bug ID: 91314
           Summary: The Witcher 2 (native) fails to start, throws
                    "Assertion `img->_BaseFormat != -1' failed."
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Keywords: bisected, regression
          Severity: normal
          Priority: medium
         Component: Mesa core
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: gyebro69 at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

I was trying to reproduce bug #91310 on my NV92, but the game fails to start
for me, terminal shows:
witcher2: main/teximage.c:1320: init_teximage_fields_ms: Assertion
`img->_BaseFormat != -1' failed.

The game starts properly when using the llvmpipe driver.
The problem was introduced by

commit 3473a84fb2c2cdab0bcecb43fbf519d9b3fc0142
Author: Iago Toral Quiroga <itoral at igalia.com>
Date:   Fri Nov 28 10:03:56 2014 +0100

    mesa: Fix incorrect assertion in init_teximage_fields_ms

    _BaseFormat is a GLenum (unsigned int) so testing if its value is
    greater than 0 to detect the cases where _mesa_base_tex_format
    returns -1 doesn't work.

    Fixing the assertion breaks the arb_texture_view-lifetime-format
    piglit test on nouveau, since that test calls
    _mesa_base_tex_format with GL_R16F with a context that does not
    have ARB_texture_float, so it returns -1 for the BaseFormat, which
    was not being caught properly by the ASSERT in init_teximage_fields_ms
    until now.

Reverting the patch on Mesa 10.5.9 fixes the issue for me.

Fedora 22 32-bit
Kernel 4.1.2
VGA compatible controller: NVIDIA Corporation G92 [GeForce GTS 250] (rev a2)
(prog-if 00 [VGA controller])
libdrm, nouveau ddx, Mesa from git

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