[Scummvm-tracker] [ScummVM :: Bugs] #15699: FREESCAPE: TinyGL stipple pattern emulation is somehow broken

[ScummVM :: Bugs]

#15699: FREESCAPE: TinyGL stipple pattern emulation is somehow broken
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Reporter:  neuromancer  |      Owner:  neuromancer
    Type:  defect       |     Status:  new
Priority:  high         |  Component:  Engine: Freescape
 Version:               |   Keywords:
    Game:               |
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 The TinyGL stipple pattern emulation was switched from using
 glPolygonOffset to use textures to avoid numerical issues (triangles were
 too close for software engine when drawing stipple in two passes).
 However, it doesn't work properly yet. While in some cases like the
 Driller DOS demo, it looks ok (but not entirely correct), some other
 stipple patterns like the ones in the Dark Side ZX demo
 (https://downloads.scummvm.org/frs/demos/freescape/darkside-zx-demo.zip)
 are completely broken. I have attached the different screenshots using
 OpenGL and TinyGL.
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Ticket URL: <https://bugs.scummvm.org/ticket/15699>
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