[quake3-bugzilla] [Bug 4965] New: support for IQM format

[bugzilla-daemon at icculus.org]

https://bugzilla.icculus.org/show_bug.cgi?id=4965

           Summary: support for IQM format
           Product: ioquake3
           Version: SVN HEAD
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: Video
        AssignedTo: zakk at icculus.org
        ReportedBy: matthias.bentrup at googlemail.com
         QAContact: quake3-bugzilla at icculus.org


Created attachment 2673
  --> https://bugzilla.icculus.org/attachment.cgi?id=2673
iqm.diff

This patch adds support for loading and rendering IQM models.

It has a few limitations though:

- It does not lift the 1000-vertex-per-surface limit of the Q3 engine, so
complex models may not work.

- The animations stored in the .iqm file are ignored, all animations have to be
defined as usual with animation.cfg files.

- The animation can only render the poses predefined in the iqm file,
overriding the position of individual bones is not supported.

- The iqm renderer uses a memory allocation in the renderer backend, so this
probably breaks when the renderer backend is run in a separate thread.

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