Prg Mbox Designer User Manual v3.6.1 User Manual Page 92

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84 MBOX
®
MEDIA SERVER USER MANUAL
LAYER BLENDING
Layer Blending Modes
There are seven layer blending modes. Many of these layer blending modes have been chosen to best replicate
common modes found in commercial image editing software (e.g. PhotoShop®, After Effects®
). The modes and their
values are:
+ 32 - Additive: layer’s colors are added to underlying colors (blacks appear transparent).
+ 64 - Screen: similar to above, with less of underlying color (blacks appear transparent).
+ 96 - Multiply: multiplies a layer’s color with underlying color (blacks appear opaque).
+ 128 - Subtractive: layer’s colors are subtracted from underlying colors (blacks appear transparent).
+ 160 - Exclusion: underlying colors are inverted where layer color is lighter; layer’s colors are then added to
underlying colors (blacks appear transparent).
+ 192 - Invert Subtractive: underlying colors are subtracted from layer’s colors (blacks appear opaque).
+ 224 - Invert Additive: layer’s colors are inverted and are added to inverse of underlying colors (blacks appear
transparent).
The blending modes are accessed using the Drawmode control on each layer. Their discrete values have been
structured so that the pre-existing drawmode controls can still be used in combination with the new blend modes. As
noted in "Using Drawmodes" on page 79, the Drawmode control uses values between 1 and 31 to select
combinations of functionality. These original values can be added to the blend mode values noted above to in order to
combine the functions. For example, Drawmode "Draw thru stencil" has a value of 6. Blend Mode Exclusion has a
value of 128. To use these two items together, set the drawmode channel to a value of 6 + 128 = 134.
Training Video: Mbox Media Server Training Video Chapter 10: Media Server Concepts
Overlay (default) Additive Screen Multiply
Subtractive Exclusion Invert Subtractive Invert Additive
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