[Bug 17193] New: [PATCH] cope with missing wglGetExtensionsStringARB / wglGetPixelFormatAttribivARB

http://bugs.winehq.org/show_bug.cgi?id=17193

Summary: [PATCH] cope with missing wglGetExtensionsStringARB /
                    wglGetPixelFormatAttribivARB
           Product: Wine
           Version: unspecified
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: directx-d3d
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=19093)
 --> (http://bugs.winehq.org/attachment.cgi?id=19093)
patch

Currently, WineD3D assumes wglGetExtensionsStringARB and
wglGetPixelFormatAttribivARB are present, and if they're not, it will segfault
when attempting to call them.  This patch adds some checks so that:

- The pointers in GLINFO_LOCATION are set to NULL when a WGL function is not
present (this was only done for GL ones).
- Code paths exist to fail gracefully when either wglGetExtensionsStringARB or
wglGetPixelFormatAttribivARB are unimplemented, disabling the functionality
associated with them.

(This situation was found when using WineD3D with Chromium OpenGL as
implemented in VirtualBox OSE 2.1)