[Scummvm-tracker] [ScummVM :: Bugs] #15491: GRAPHICS: OPENGL: GRIM: Grim Fandango 60 > 12 FPS performance drop in ScummVM 2.9.0pre

[ScummVM :: Bugs]

#15491: GRAPHICS: OPENGL: GRIM: Grim Fandango 60 > 12 FPS performance drop in
ScummVM 2.9.0pre
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Reporter:  dwatteau  |       Owner:  (none)
    Type:  defect    |      Status:  new
Priority:  blocker   |   Component:  Graphics
 Version:            |  Resolution:
Keywords:            |        Game:  Grim Fandango
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Comment (by dwatteau):

 aquadran says on Discord:

 > ''it might be related to missing `GL_FRAGMENT_PROGRAM_ARB`, used in grim
 to write  to zbuffer
 > but its needed only for classic opengl
 > without extension access to zbuffer might be very slow
 > extension in glad needs to be restored''
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Ticket URL: <https://bugs.scummvm.org/ticket/15491#comment:2>
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