Comment 8 for bug 467474

I have patched the savage driver so it exposes modes with non-zero alpha depth. The patch only changes the modes which the driver exposes, I have not verified that all exposed modes are actually functional. Using the patched driver clutter applications are functional (within the constraints of the hardware of course) and the segfaults disappear.

The patch applies to mesa-7.7 as used in Lucid.

Again, this patch makes clutter apps work but I have not verified that all exposed modes are actually supported by the driver and the hardware. This is the mode table after applying the patch according to glxinfo on a 24 bit framebuffer:

24 GLX Visuals
   visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
 id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x21 24 tc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x22 24 dc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x92 24 tc 0 32 0 r . . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x93 24 tc 0 32 0 r . . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x94 24 tc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x95 24 tc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xa2 24 tc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xa3 24 tc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xa4 24 tc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xa5 24 tc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xa6 24 tc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xa7 24 tc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xb4 24 dc 0 32 0 r . . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0xb5 24 dc 0 32 0 r . . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xb6 24 dc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xb7 24 dc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0xb8 24 dc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xc5 24 dc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xc6 24 dc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xc7 24 dc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xc8 24 dc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xc9 24 dc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xca 24 dc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x43 32 tc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 Ncon

24 GLXFBConfigs:
   visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
 id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x4a 0 tc 0 32 0 r . . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x4b 0 tc 0 32 0 r . . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x4c 0 tc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x4d 0 tc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x4e 0 tc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x4f 0 tc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x5c 0 tc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x5d 0 tc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x5e 0 tc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x5f 0 tc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x60 0 tc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x61 0 tc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x6e 0 dc 0 32 0 r . . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x6f 0 dc 0 32 0 r . . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x70 0 dc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x71 0 dc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x72 0 dc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x73 0 dc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x80 0 dc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x81 0 dc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x82 0 dc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x83 0 dc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x84 0 dc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x85 0 dc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow