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# Combiner

UT2003 :: Object >> Material >> Combiner (Package: Engine)

Combines two materials possibly using a third material as mask.

## Properties

EAlphaOperation AlphaOperation
  Operation used to combine the alpha channels of the materials. See EAlphaOperation enum below.
EColorOperation CombineOperation
  Operation used to combine the RGB channels of the materials. See EColorOperation enum below.
bool InvertMask
  Inverts the mask's alpha channel?
Material Mask (editinlineuse)
  Material used as the mask.
Material Material1 (editinlineuse)
  First material.
Material Material2 (editinlineuse)
  Second material.
bool Modulate2X
bool Modulate4X

## Enums

### EAlphaOperation

AO_Use_Mask
  Use the mask material's alpha channel as the new alpha channel.
AO_Multiply
  Multiply the alpha channel values of the two materials.
AO_Add
  Add the alpha channel values of the two materials.
AO_Use_Alpha_From_Material1
  Use the first material's alpha channel as the new alpha channel.
AO_Use_Alpha_From_Material2
  Use the second material's alpha channel as the new alpha channel.

### EColorOperation

CO_Use_Color_From_Material1
  Use only the first material's RGB channels for the resulting material.
CO_Use_Color_From_Material2
  Use only the second material's RGB channels for the resulting material.
CO_Multiply
  Multiply the RGB values or the two materials.
CO_Add
  Add the RGB values of the two materials.
CO_Subtract
  Subtract the second material's RGB values from the first material's RGB values.
CO_AlphaBlend_With_Mask
  The mask's alpha channel determines, how much of each material is visible. Transparent parts of the mask mean use more of the first material and opaque parts of the mask mean use more of the second material. (I think)
CO_Add_With_Mask_Modulation
CO_Use_Color_From_Mask
  Use the mask material's RGB channels for the resulting material.

Category Class (UT2003)

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