[Mesa-dev] [Bug 101326] gallium/wgl: Allow context creation without prior SetPixelFormat()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101326

            Bug ID: 101326
           Summary: gallium/wgl: Allow context creation without prior
                    SetPixelFormat()
           Product: Mesa
           Version: 17.1
          Hardware: Other
                OS: Windows (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Other
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: frank.richter at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 131764
  --> https://bugs.freedesktop.org/attachment.cgi?id=131764&action=edit
Patch: Allow context creation without prior SetPixelFormat()

Currently, when creating a context without having called SetPixelFormat() on
the DC earlier, context creation fails.
However, looking at stw_make_current(), the intention there is to support that
scenario; there, if the pixel format wasn't set, that function falls back to a
default.
So it looks like context creation should work as well.
Attached patch does that by using pretty much the same logic as
stw_make_current().

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