> Roderick Colenbrander wrote : > >> On 11/1/06, Bertrand Coconnier <[EMAIL PROTECTED]> wrote: > >>> Hi, > >>> > >>> The last release of Wine 0.9.24 contains an error in the code of > >> opengl32.dll.so > >>> under X11 : Wine tries to get the address of "wglGetIntegerv" (line > 608 > >> of > >>> dlls/opengl32/wgl.c) before the extensions of WGL have actually been > >> loaded > >>> (i.e. before X11DRV_WineGL_LoadExtensions() is called). The reading of > >> the > >>> wglGetIntegerv address fails and afterwards, whenever > >> internal_glGetIntegerv() > >>> is called, wine_wgl.p_wglGetIntegerv is NULL and a Fatal Exception is > >> raised. > >> > >> > >> This is probably already fixed in the git tree. See the commit: > >> winex11.drv: Fixed the prototype of many OpenGL functions. > >> > >> Jesse > > > > Else if the problem still happens something strange is going as the > extensions are registered at x11drv startup. > > > > Roderick > > Yes, the problem still happens because the function process_attach() (line > 582 > of dlls/opengl32/wgl.c) is called before the x11drv startup. The comment > of > process_attach is very clear : "/* This is for brain-dead applications > that use > OpenGL functions before even creating a rendering context.... */". It is > clear > that process_attach is a workaround for *brain-dead* apps :) and among > other > things it gets the address of wglGetIntegerv. This operation used to > succeed as > long as GetProcAddress() was used but now since x11drv is needed to upload > the > wglGetIntegerv address there is some kind of race condition and the > operation > fails hence the bug. > > Bertrand.
Compared to 0.9.23 I changed the way wglGetIntegerv is loaded before it was directly loaded using GetProcAddress from winex11.drv now it is still loaded from winex11.drv but then using wglGetProcAddress from gdi32. At wine startup (I'm not sure at which stage but I believe directly when you use gdi stuff or perhaps even earlier) winex11.drv is initialized and during this initialization my opengl code is initialized aswell. I wonder what causes the race as I haven't seen it happening for other users yet. I want to avoid a patch like yours as I plan to do similar things for some other functions. Perhaps something goes wrong in wglGetProcAddress itself. Try running wine using: WINEDEBUG=+wgl,+opengl wine wow.exe -opengl &> log. If it is correct you'll see some opengl information (gl version, loading of extensions) before stuff happens in opengl32.dll. Roderick -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer
