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| -rw-r--r-- | info/blueshift.texinfo | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/info/blueshift.texinfo b/info/blueshift.texinfo index 0360956..8f7e92a 100644 --- a/info/blueshift.texinfo +++ b/info/blueshift.texinfo @@ -277,18 +277,24 @@ manipulate these curves: @table @code @item rgb_contrast(rgb) -Adjusts the contrast to @code{rgb}. +Adjusts the contrast to @code{rgb}. This +function assumes the black is 0, and white +is 1, so you should apply this before brightness. @item rgb_contrast(r, g, b) Adjusts the contrast to @code{r}, @code{g} and @code{b} on the red, green and blue curves, -respectively. +respectively. This function assumes the black is +0, and white is 1, so you should apply this +before brightness. @item cie_contrast(y) Adjusts the contrast to @code{y}. The function calculate the values by using the CIE xyY colour space instead of the sRGB -colour space. +colour space. This function assumes the black +is 0, and white is 1, so you should apply +this before brightness. @item rgb_brightness(rgb) Adjusts the brightness to @code{rgb}. |