[Bug 75253] New: Unigine engine regression (GM 45)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75253

          Priority: medium
            Bug ID: 75253
          Assignee: idr at freedesktop.org
           Summary: Unigine engine regression (GM 45)
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: imamdxl8805 at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/DRI/i965
           Product: Mesa

Unigine engine based applications failing to run in mesa master. They used to
run fine before with environment variable:

export MESA_EXTENSION_OVERRIDE="GL_EXT_framebuffer_multisample"

Tested applications:

Unigine Tropics-1.3
Unigine-Heaven-3.0
OilRush-1.12

console output after crashing of each application:

Tropics:
../../../../../../../src/mesa/drivers/dri/i965/brw_vec4_generator.cpp:1043:
void brw::vec4_generator::generate_vec4_instruction(brw::vec4_instruction*,
brw_reg, brw_reg*): Assertion `brw->gen >= 6' failed.
Aborted (core dumped)


My guess, it is due to the same bug,
https://bugs.freedesktop.org/show_bug.cgi?id=74911

The 74911 bug is resolved now fixing many applications but not unigine based
games on GM 45.


System:

Ubuntu 13.10
Linux: 3.12.0-031200-generic
xf86-video-intel 2.99.905
X.Org X Server 1.14.5
Mesa master: Mesa 10.2.0-devel (git-57405605a8c320f9d6ea389afd43ce6f013330a5)
Intel GMA 4500MHD (device id: 2a42)

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