[Bug 89148] r300g: Kernel rejected CS in Wine d3d multisample test

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89148

            Bug ID: 89148
           Summary: r300g: Kernel rejected CS in Wine d3d multisample test
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r300
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: stefandoesinger at gmx.at
        QA Contact: dri-devel at lists.freedesktop.org

When running Wine's d3d8 and d3d9 tests in r300g an invalid command stream is
sent to the kernel:

[  916.508352] [drm:radeon_cs_packet_parse] *ERROR* Unknown packet type 1 at
2451 !
[  916.508358] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !
[  916.508902] [drm:radeon_cs_packet_parse] *ERROR* Unknown packet type 1 at 69
!
[  916.508905] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !

The user space driver notices the error and writes a message to stderr. The
test that triggered the invalid command subsequently fails.

The failing line in the tests is
http://source.winehq.org/git/wine.git/blob/f75d1b0c2f77d8c85f7c2a9bcc3545f14e271a86:/dlls/d3d8/tests/visual.c#l3704
. The test performs a copy from a multisampled color buffer to system memory.
Wined3d first resolves the multisampled renderbuffer to a non-multisampled
texture and calls glGetTexImage. Interestingly it is the glGetTexImage step
that fails. The texture has format GL_BGRA, type GL_UNSIGNED_INT_8_8_8_8_REV
and internal format GL_SRGB8_ALPHA8.

We call glGetTexImage in plenty of places in this configuration, and this is
the only case where this fails. I'll try to pin this down a bit further.

The bug can be reproduced by running make visual.ok in dlls/d3d8/tests in a
Wine build tree.

System information:
Wine commit ID: f75d1b0c2f77d8c85f7c2a9bcc3545f14e271a86
Mesa commit ID: e333035c47a6a4cc88f0f9ca2bced500538bebae
Kernel: 3.19
libdrm: 2.4.59
X server: 1.16.3
Distribution: Gentoo

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