Alpha Setter Effect
| Microsoft DirectShow 9.0 |
Alpha Setter Effect
The Alpha Setter effect sets the alpha bits on a video image.
Class ID (CLSID): {506D89AE-909A-44f7-9444-ABD575896E35}
CLSID Variable Name: CLSID_DxtAlphaSetter
Friendly Name: "DxtAlphaSetter"
Properties
| Property | Type | Default | Description |
| Alpha | BYTE | -1 | Sets the alpha for the entire image. |
| AlphaRamp | double | -1.0 | Sets the alpha as a percentage of the original alpha value. |
Remarks
A property with a negative value is ignored. Only one property can have a non-negative value. The Alpha property specifies a constant alpha value for every pixel in the image. This property overwrites the alpha values from the original image. The AlphaRamp property specifies each pixel's alpha value as a percentage of the pixel's original value, from 0.0 to 1.0.
See Also