Globalflags

globalflags holds values that control certain aspects of the engine.

Exposed	Value	Label	Description
No	1	GLOBAL_NO_GL_TILESHADES	Disable tile shades (aka palette emulation) in OpenGL
No	2	GLOBAL_NO_GL_FULLBRIGHT	Disable fullbright colors in OpenGL
No	4	GLOBAL_NO_GL_FOGSHADE	Make visibility the same for all shades in OpenGL. With this, positive shades won't appear darker with visibility, and negative shades won't appear brighter (and negative shades will have virtually no difference from shade zero). Use HICTINT_NOFOGSHADE on tint to set individually for a palette.

define GLOBAL_NO_GL_TILESHADES          0x00000001
define GLOBAL_NO_GL_FULLBRIGHT          0x00000002
define GLOBAL_NO_GL_FOGSHADE            0x00000004

Can be set via def with the globalflags command.