[Bug 21445] New: radeon-rewrite R200 driver doesn't clip opengl context if there is overlapping window

[<bug...@fr...>]

http://bugs.freedesktop.org/show_bug.cgi?id=21445

           Summary: radeon-rewrite R200 driver doesn't clip opengl context
                    if there is overlapping window
           Product: Mesa
           Version: CVS
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r200
        AssignedTo: dri...@li...
        ReportedBy: su...@gm...


I'm running the the latest radeon-rewrite branch with modesetting-gem drm
modules using stock Ubuntu Jaunty xorg/kernel.

System is:
Mobile AMD Athlon(tm) XP 2800+
M9+ 5C61 [Radeon Mobility 9200 (AGP)]
VIA VT8378 [KM400/A] Chipset Host Bridge

Steps to reproduce bug:
1. start glxgears
2. move a window over gears window
3. gears will render over 2nd window

xorg.conf device section:
        Identifier      "Configured Video Device"
        Option          "AccelMethod" "EXA"
        Option          "MigrationHeuristic" "smart"
        Option          "EnablePageFlip" "on"
        Option          "ClockGating" "on"
        Option          "DynamicClocks" "on"
        Option          "ColorTiling" "on"

driconf settings:
            <option name="force_s3tc_enable" value="false" />
            <option name="no_rast" value="false" />
            <option name="fthrottle_mode" value="2" />
            <option name="tcl_mode" value="3" />
            <option name="texture_depth" value="0" />
            <option name="def_max_anisotropy" value="2.0" />
            <option name="no_neg_lod_bias" value="false" />
            <option name="command_buffer_size" value="32" />
            <option name="texture_units" value="6" />
            <option name="dither_mode" value="0" />
            <option name="hyperz" value="true" />
            <option name="round_mode" value="0" />
            <option name="allow_large_textures" value="2" />
            <option name="nv_vertex_program" value="false" />
            <option name="color_reduction" value="1" />
            <option name="vblank_mode" value="1" />
            <option name="texture_blend_quality" value="1.0" />

libraries compiled from the latest git:
libXxf86vm commit f2a1073b3027c508e01beca9ca34bbc6c90f5e6b
xf86vidmodeproto commit 7efd16a110ea4e8a7deab405fba7e1f5ceb4add2
drm commit 1edb70f1b909d06f1c0ee7c9c794aec99454e488
pthread-stubs commit ef2431f5bdef1da9f2f7701232def164910b191b
dri2proto commit 66c56ab10d917e3f47f93178d7eac6430970d3c4
libXmu commit 88bd2d387fbb068339b65506331136085082def6
macros commit 21a957428aa69b03f585378dc6e70ad9f5c513c6
mesa commit ce0d10dd6cd688d16e004c33ea4418cd7254a7f7
xf86-video-ati commit abd565ae71d9844d5afcd658628ca7778ce26ab1


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