wined3d:context.c Check for a context is added

[Anatoly Lyutin]

Roderick Colenbrander wrote:
>
> Hi,
>
>   
Hi!
> I'm not sure if your patch is correct. The block of code in front of the if-statement you added should have found or else created a context. If afterwards there is no context it sounds like something went wrong. Returning NULL isn't correct then. When we just return we keep using the old context (if one was around) which might work for your program but it isn't guaranteed to work at all.
>
> So what is the real problem?
>   
I use  one application that falls after exit:

ixme:dbghelp_dwarf:dwarf2_parse_variable Unsupported form for const value
srgb_sub_high (a)
Register dump:
 CS:0073 SS:007b DS:007b ES:007b FS:0033 GS:003b
 EIP:7ebe66f5 ESP:0033faac EBP:0033fae4 EFLAGS:00210202(   - 00      - -RI1)
 EAX:00000000 EBX:7ec91428 ECX:00000000 EDX:0013c908
 ESI:00000014 EDI:0013b588
Stack dump:
0x0033faac:  00110000 00000000 0013ae78 00000000
0x0033fabc:  7ecbad04 02ff7de8 0033fae4 7ecb01ee
0x0033facc:  02ff7de8 0033fb08 00000405 7ec91428
0x0033fadc:  02ff6360 0013c908 0033fb14 7ebe32a0
0x0033faec:  0013c908 0013b588 00000001 00000007
0x0033fafc:  00000000 00110000 00000000 7ec91428
Backtrace:
=>1 0x7ebe66f5 ActivateContext+0x75(This=0x13c908, target=0x13b588, usage=0x1)
[/srv/vostok/Projects/wine/dlls/wined3d/context.c:867] in wined3d (0x0033fae4)
  2 0x7ebe32a0 IWineD3DBaseTextureImpl_CleanUp+0x50(iface=<register ESI not in
topmost frame>) [/srv/vostok/Projects/wine/dlls/wined3d/basetexture.c:75] in
wined3d (0x0033fb14)
  3 0x7ec4cce6 IWineD3DTextureImpl_Destroy+0xa6(iface=<register EDI not in
topmost frame>, D3DCB_DestroySurface=0x7eca75e0)
[/srv/vostok/Projects/wine/dlls/wined3d/texture.c:237] in wined3d (0x0033fb44)
  4 0x7ecb1147 IDirect3DTexture8Impl_Release+0x57(iface=0x2f0c8a0)
[/srv/vostok/Projects/wine/dlls/d3d8/texture.c:62] in d3d8 (0x0033fb84)
  5 0x005ef395 in mme (+0xaf395) (0x0033fba0)
  6 0x005ef44b in mme (+0xaf44b) (0x0033fbac)
  7 0x005ef69f in mme (+0xaf69f) (0x0033fbc8)
  8 0x005e4ad3 in mme (+0xa4ad3) (0x0033fbd4)
  9 0x0057fd3f in mme (+0x3fd3f) (0x0033fbe4)
  10 0x005a040f in mme (+0x6040f) (0x0033fbf0)
  11 0x0059a4aa in mme (+0x5a4aa) (0x0033fc08)
  12 0x0059a7bf in mme (+0x5a7bf) (0x0033fc14)
  13 0x00548ec4 in mme (+0x8ec4) (0x0033fc2c)
  14 0x0056e770 in mme (+0x2e770) (0x0033fc3c)
  15 0x005af139 in mme (+0x6f139) (0x0033fc4c)
  16 0x0054443d in mme (+0x443d) (0x0033fc6c)


> Regards,
> Roderick
>   


-- 
Best regards
	Anatoly Lyutin.