[Bug 20554] Populous 3 fails to start

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=20554





--- Comment #12 from Roderick Colenbrander <thunderbird2k at gmail.com>  2009-11-05 09:05:13 ---
I did some testing myself. WineD3D calls CreateDIBSection from
IWineD3DBaseSurfaceImpl_CreateDIBSection. In that function it asks
CreateDIBSection to allocate 640x481x16 (481 because it needs an extra line).
On my system the allocate memory is at 0x3110000. (+d3d_surface shows that)

The game crashes in a similar way as on your system:
First chance exception: page fault on write access to 0x03124000 in 32-bit code
(0x0057d7c9).
Register dump:
 CS:0023 SS:002b DS:002b ES:002b FS:0063 GS:006b
 EIP:0057d7c9 ESP:0033f0f0 EBP:03124000 EFLAGS:00010216(  R- --  I   -A-P- )
 EAX:00200840 EBX:00000800 ECX:00000000 EDX:000009fe
 ESI:2e023a72 EDI:0033f4f0
Stack dump:
0x0033f0f0:  0000000a 0000000b 0000000b 0000000b
0x0033f100:  0000000a 0000000a 0000000a 0000000b
0x0033f110:  0000000c 0000000a 0000000a 0000000a
0x0033f120:  00000009 00000008 00000008 00000009
0x0033f130:  0000000a 0000000b 0000000b 0000000b
0x0033f140:  0000000a 0000000a 0000000a 0000000b
Backtrace:
=>0 0x0057d7c9 in d3dpoptb (+0x17d7c9) (0x03124000)

The memory 0x03124000 is part of the range allocate for the DIBSection namely
0x03110000 - 0x035c2800 (0x03110000+640*481*16). So apparently something goes
wrong there.

The problem that it is VERY hard to debug. DIBSections can be modified by
directly poking with bits from a program and they can also be modified by GDI
calls (in that case a DIBSection is drawn to using X functions). Segmentation
faults are used to keep both copies in sync.

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