[Bug 27570] New: r300g incorrectly claims npot support

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

https://bugs.freedesktop.org/show_bug.cgi?id=27570

           Summary: r300g incorrectly claims npot support
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri...@li...
        ReportedBy: wix...@gm...


Created an attachment (id=34853)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34853)
the test program (compile with -std=c99)

The r300g driver on rv515 claims GL_ARB_texture_non_power_of_two support.
Suprisingly, such textures actually work if texture coordinates are (0,0),
(1,0), (1,1), (0,1). However if that's not the case, garbage is rendered. This
bug makes Blender 2.50 ui unusable. 

Attached are: test program, correct rendering (obtained by
LIBGL_ALWAYS_SOFTWARE=1) and r300g's rendering (the garbage pattern varies,
sometimes just white/black, sometimes all pixels are random).

driver is from git version, commit edb5253dfa0...
hardware is radeon x1300 (rv515)
kernel is vanilla 2.6.33.

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