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-
- guigfx environment variables
- ----------------------------
-
- guigfx/USESCALEPIXELARRAY
- internal default: 0
-
- use ScalePixelArray() / cybergraphics v41
-
- if you have cybergraphics v41 (or later) installed to
- your system, this flag tells guigfx.library to use
- ScalePixelArray() for scaling truecolor data to truecolor
- displays.
-
- ScalePixelArray() scales inside the graphics card's memory
- and can thereof be very fast. it is NOT used by default,
- due to accuracy problems. ScalePixelArray()
-
- - uses an incorrect bresenham algorithm
- - overwrites areas outside the specified rectangle
- - overwrites areas outside the specified rastport
- - flickers
-
- set this flag to 1 if you prefer higher performance
- instead of higher accuracy.
-
-
- guigfx/USEWPA8
- internal default: 0
-
- use WritePixelArray() on native Amiga screenmodes
-
- the OS functions WriteChunkyPixels(), WritePixelArray8() and
- WritePixelLine8() are awfully slow and almost unusable on
- native Amiga displays. therefore, guigfx.library uses an
- internal chunky-2-planar conversion for planar displays.
-
- there are very fast third-party patches available to
- improve the performance of WritePixelArray(). if you
- are using such a patch for WritePixelArray(), set this
- flag to 1.
-
- note: this flag is meaningless for graphics card displays.
-
-
- guigfx/AUTODITHERTHRESHOLD
- internal default: 250
-
- set global default autodither threshold
-
- this setting allows you to set a global default for
- guigfx.library's autodither feature. the lower, the earlier
- dithering is activated.
-
- note: applications may override this global default value.
-