diff options
Diffstat (limited to 'graphics/dither.cpp')
| -rw-r--r-- | graphics/dither.cpp | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/graphics/dither.cpp b/graphics/dither.cpp index ff58961a17..7a92441571 100644 --- a/graphics/dither.cpp +++ b/graphics/dither.cpp @@ -54,9 +54,13 @@ PaletteLUT::PaletteLUT(byte depth, PaletteFormat format) { memset(_gots, 1, _dim1); } -void PaletteLUT::setPalette(const byte *palette, PaletteFormat format, byte depth) { +void PaletteLUT::setPalette(const byte *palette, PaletteFormat format, + byte depth, int transp) { + assert((depth > 1) && (depth < 9)); + _transp = transp; + int shift = 8 - depth; // Checking for the table's and the palette's pixel format @@ -113,6 +117,10 @@ void PaletteLUT::build(int d1) { // Going over every palette entry, searching for the closest for (int c = 0; c < 256; c++, p += 3) { + // Ignore the transparent color + if (c == _transp) + continue; + uint32 di = SQR(d1 - p[0]) + SQR(j - p[1]) + SQR(k - p[2]); if (di < d) { d = di; @@ -165,7 +173,7 @@ bool PaletteLUT::save(Common::WriteStream &stream) { buildNext(); stream.writeUint32BE(MKID_BE('PLUT')); // Magic - stream.writeUint32BE(0); // Version + stream.writeUint32BE(kVersion); stream.writeByte(_depth1); if (stream.write(_realPal, 768) != 768) return false; @@ -193,8 +201,7 @@ bool PaletteLUT::load(Common::SeekableReadStream &stream) { if (stream.readUint32BE() != MKID_BE('PLUT')) return false; - // Version - if (stream.readUint32BE() != 0) + if (stream.readUint32BE() != kVersion) return false; byte depth1 = stream.readByte(); |