[Scummvm-tracker] [ScummVM :: Bugs] #15271: TINYGL: glPolygonStipple seems to work when looking at one side only

[ScummVM :: Bugs]

#15271: TINYGL: glPolygonStipple seems to work when looking at one side only
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Reporter:  neuromancer  |       Owner:  (none)
    Type:  defect       |      Status:  new
Priority:  normal       |   Component:  Graphics
 Version:               |  Resolution:
Keywords:  tinygl       |        Game:
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Comment (by neuromancer):

 Something else that was proposed for this issue in Discord:

 > do you think it could be because there is a missing statement that
 updates the zbuffer in FrameBuffer::fillTriangle ?
 > Perhaps in the update_right branch? There is an update to the zbuffer in
 update_left, but nothing in the other branch:
 https://github.com/scummvm/scummvm/blob/494ec37f20e3560d5e82829612086262401720e2/graphics/tinygl/ztriangle.cpp#L380-L444
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Ticket URL: <https://bugs.scummvm.org/ticket/15271#comment:1>
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