[Bug 3262] New: lightmaps cause texture data loss

bugzilla-daemon at icculus.org bugzilla-daemon at icculus.org
Thu Jul 12 02:14:44 EDT 2007


           Summary: lightmaps cause texture data loss
           Product: Quake 3
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P3
         Component: Video
        AssignedTo: zakk at icculus.org
        ReportedBy: kmcquillan at gmail.com
         QAContact: quake3-bugzilla at icculus.org

in quake 3's rendering process, lightmaps and the texture are blended together
then dlights and other lights come after, this cuases a problem because all
light that is applied after the texture is applied will not be able to properly
light the map since the lightmap has already been blended with the texture

this can be seen on nearly any quake map using nearly any graphic settings as
long as dlights are turned on, simply fire a rocket at a wall where a section
of the wall is shaded and notice how as the rocket passes this area, the shadow
remains despite the dlight's illuminating effects on the wall.

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