| 摘要 |
A method and apparatus for chroma keying filtered textures are provided. Chroma keying is performed which replaces the input texel color with a new color if the input texel color matches the chrome color. Th e chroma key circuitry (149) keeps the input texel color and sets the alpha component to 1 if the input texel color does not match the chrome color. The chrome keyed texels are filtered using bilinear filtering (150). The color components of the filtered texels are fogged (152 ) using a fog factor, a fog color, and the alpha component of the filtered texel. The fogged and filtered signal is blinded (154) with a background color to produce an output color for the texels.
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