[Nouveau] [Bug 91986] New: Artifacts in models rendering with GeForce 6150 (NV4x chipsets)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91986

            Bug ID: 91986
           Summary: Artifacts in models rendering with GeForce 6150 (NV4x
                    chipsets)
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: issor.oruam at gmail.com
        QA Contact: nouveau at lists.freedesktop.org

Created attachment 118224
  --> https://bugs.freedesktop.org/attachment.cgi?id=118224&action=edit
X-Wing model artifacts visible on with mesa 11.1git

X-Wing model and other models in FreeSpace2 with StarWars Original Trilogy mod
shows rendering artifacts.

Filing a separate bug from https://bugs.freedesktop.org/show_bug.cgi?id=91551
as requested for NV4C chipset,
also because the artifacts are different.

Here I see big black poligons filling the screen, like vertexes of the model
invading the whole screen. 

NOTE: using mesa 10.6 the artifacts are not covering the entire GUI,
but I see some kind of vertex/surfaces problem, but the shaders maps are fine
but the vertexes/surfaces are completely distorted.

Here is the link of the old trace that is able to produce the artifacs
described in the different mesa versions. (X-Wing is the model visible before
the Tie pilot)

http://www.mediafire.com/download/949r35rra31rpte/Tie_pilot_Nvidia_GT210_fs2_open_3.7.2.trace.7z

Attached pictures of the artifact for 11.1git and 10.6

Attached dmesg that show some nouveau errors, but most probably unrelated to
the bug.

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