[Bug 40790] New: r600g readPixSanity failure on RS880 Radeon HD 4250

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=40790

           Summary: r600g readPixSanity failure on RS880 Radeon HD 4250
           Product: Mesa
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: nmiell at gmail.com


Created an attachment (id=51059)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51059)
Results for glean/readPixSanity

readPixSanity fails with both Mesa 7.11 and current git
(2154c672b3f2a0f3de7aaacd9260954b9310262a) on ATI Technologies Inc RS880
[Radeon HD 4250] using the Gallium R600 driver.

Test failure is:
readPixSanity:  FAIL rgba8, db, z24, s8, win+pmap, id 33
    Depth worst-case error was 8.39711 bits at (31, 31)
        expected 0.10967; got 0.10965.
    RGBA largest readback error was 0 bits
    Depth largest readback error was 8.39711 bits
readPixSanity:  FAIL rgba8, db, z24, s8, win+pmap, id 34
    Depth worst-case error was 8.39711 bits at (31, 31)
        expected 0.10967; got 0.10965.
    RGBA largest readback error was 0 bits
    Depth largest readback error was 8.39711 bits
readPixSanity:  FAIL rgba8, db, z24, s8, win+pmap, id 109
    Depth worst-case error was 8.39711 bits at (31, 31)
        expected 0.10967; got 0.10965.
    RGBA largest readback error was 0 bits
    Depth largest readback error was 8.39711 bits

In addition, the following X error is generated:
X Error of failed request:  BadDrawable (invalid Pixmap or Window parameter)
  Major opcode of failed request:  136 (DRI2)
  Minor opcode of failed request:  8 (DRI2SwapBuffers        )
  Resource id in failed request:  0x220000b
  Serial number of failed request:  1280
  Current serial number in output stream:  1280

Relevant packages:
xorg-x11-server-Xorg-1.10.4-1.fc15.x86_64
xorg-x11-drv-ati-6.14.1-2.20110525gitfe5c42f51.fc15.x86_64
kernel-2.6.40.4-5.fc15.x86_64 (that's 3.0.4 with a mangled version)

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