diff --git a/doc/BuildOptions.md b/doc/BuildOptions.md index b2fbf03..d620d52 100644 --- a/doc/BuildOptions.md +++ b/doc/BuildOptions.md @@ -29,6 +29,7 @@ Or if using Arduino: 'Tools' menu > 'Core Debug Level' > Select 'Debug' | **NO_FAST_FUNCTIONS** | Do not build auxiliary speed-optimized functions. Those are used to speed-up operations like drawing straight lines or rectangles. Otherwise lines/shapes are drawn using drawPixel() method. The trade-off for speed is RAM/code-size, take it or leave it ;) | If you are not using AdafruitGFX than you probably do not need this either| |**NO_CIE1931**|Do not use LED brightness [compensation](https://ledshield.wordpress.com/2012/11/13/led-brightness-to-your-eye-gamma-correction-no/) described in [CIE 1931](https://en.wikipedia.org/wiki/CIE_1931_color_space). Normally library would adjust every pixel's RGB888 so that luminance (or brightness control) for the corresponding LED's would appear 'linear' to the human's eye. I.e. a white dot with rgb(128,128,128) would seem to be at 50% brightness between rgb(0,0,0) and rgb(255,255,255). Normally you would like to keep this enabled by default. Not only it makes brightness control "linear", it also makes colours more vivid, otherwise it looks brighter but 'bleached'.|You might want to turn it off in some special cases like: