[Bug 19412] Red Alert 3: fails to render a character

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=19412





--- Comment #22 from Charles Davis <cdavis at mines.edu>  2009-07-29 16:40:42 ---
(In reply to comment #21)
> Created an attachment (id=22689)
 --> (http://bugs.winehq.org/attachment.cgi?id=22689) [details]
> Test case for the glCompressedTexImage2D bug
> 
> The glCompressedTexSubImage2D bug never occured on Macs with Nvidia cards. I
> only positively reproduced it on Intel GMA X3100 macs, and I think it also
> occurs on ATI cards, but I have to test there.
> 
> Attached is the test case I sent to Apple for this bug. If it runs properly, it
> should show one of Half Life 2's static backgrounds(pretty dark, because its
> sRGB'ed). If the driver has the bug, the app shows either a static color or
> random garbage.
> 
> Compile with gcc srgbtexture.c -o srgbtexture -framework opengl -framework
> glut. There might be a bunch of compile errors due to the way I include the
> glut headers(or rather, do not include them)

Funny... it crashes and burns on my system with a SIGBUS. When I debugged your
test program, I found that the stack was corrupted somehow, and the CPU had
jumped to some random address. Note the value in EAX:

(gdb) bt
#0  0xffff08ab in ?? ()
#1  0x00000001 in ?? ()
(gdb) info reg
eax            0xffff088b    -63349
ecx            0x0    0
edx            0xfffffc80    -896
ebx            0x11f07b7a    300972922
esp            0xbfffea90    0xbfffea90
ebp            0xbfffea98    0xbfffea98
esi            0x25360    152416
edi            0x15a56ca0    363162784
eip            0xffff08ab    0xffff08ab
eflags         0x10282    66178
cs             0x17    23
ss             0x1f    31
ds             0x1f    31
es             0x1f    31
fs             0x0    0
gs             0x37    55

Is this why you could never reproduce this with an nVidia card, or is something
else at work? (I think it's the latter; see below.)

The odd part is that Henri's patch works fine as far as I can tell. Maybe
wined3d does something that your test program isn't doing (or the other way
around).

(And personally, I'd never even consider gaming with Intel's integrated
graphics solutions.)

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