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2.13.6 Clamping or Masking


After lighting (whether enabled or not), RGBA colors are clamped to the range . For a color index, the index is first converted to fixed-point with an unspecified number of bits to the right of the binary point; the nearest fixed-point value is selected. Then, the bits to the right of the binary point are left alone while the integer portion is masked (bitwise ANDed) with , where n is the number of bits in a color in the color index buffer (buffers are discussed in chapter 4).

David Blythe
Sat Mar 29 02:23:21 PST 1997