[Bug 29116] New: [wine] Offscreen rendering with FBO results in GL_FRAMEBUFFER_UNSUPPORTED

[bugzilla-daemon@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29116

           Summary: [wine] Offscreen rendering with FBO results in
                    GL_FRAMEBUFFER_UNSUPPORTED
           Product: Mesa
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: sa@whiz.se


Created an attachment (id=37131)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37131)
Civ4 screenshot with fbo for offscreen rendering

Wine uses framebuffer objects to handle offscreen rendering by default, this
isn't working so well:

err:d3d:IWineD3DDeviceImpl_ClearSurface >>>>>>>>>>>>>>>>>
GL_INVALID_FRAMEBUFFER_OPERATION (0x506) from glClear @ device.c / 4563
fixme:d3d:context_check_fbo_status FBO status GL_FRAMEBUFFER_UNSUPPORTED
(0x8cdd)
fixme:d3d:context_check_fbo_status     Color attachment 0: (0x1c6c84e0)
WINED3DFMT_B8G8R8A8_UNORM 512x512
fixme:d3d:context_check_fbo_status     Depth attachment: (0x1c6c8648)
WINED3DFMT_D24_UNORM_S8_UINT 512x512
err:d3d_draw:drawStridedFast >>>>>>>>>>>>>>>>> GL_INVALID_FRAMEBUFFER_OPERATION
(0x506) from glDrawElements @ drawprim.c / 46
fixme:d3d:context_check_fbo_status FBO status GL_FRAMEBUFFER_UNSUPPORTED
(0x8cdd)
fixme:d3d:context_check_fbo_status     Color attachment 0: (0x1c6c84e0)
WINED3DFMT_B8G8R8A8_UNORM 512x512
fixme:d3d:context_check_fbo_status     Depth attachment: (0x1c6c8648)
WINED3DFMT_D24_UNORM_S8_UINT 512x512

For example, in Civilization IV it results in character portraits rendering
garbage (see attached screenshot).

For some games and apps, this can be worked around by using "backbuffer"
instead, as documented in http://wiki.winehq.org/UsefulRegistryKeys but it
isn't working everywhere, and I wouldn't be surprised if this option was
removed in the future.

This might be a more general problem with Mesa instead of something specific to
radeon.

System environment:
-- system architecture: 32-bit
-- Linux distribution: Debian unstable
-- GPU: RV570
-- Model: Asus EAX1950Pro 256MB
-- Display connector: DVI
-- xf86-video-ati: 6.13.1
-- xserver: 1.8.99.904 (1.9.0 RC 4)
-- mesa: 80e07c41907cc0ac43d68aeb3abf9de8435e70fd
-- drm: 6ea2bda5f5ec8f27359760ce580fdad3df0464df
-- kernel: 2.6.35-rc5

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