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Fix the way we quantize 16-bit pixel channels

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This commit is contained in:
Pavel Krajcevski 2014-05-15 22:02:03 -04:00
parent 2d52f1eabb
commit 374f5375d5
1 changed files with 6 additions and 1 deletions
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7
ASTCEncoder/src/Decompressor.cpp
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@ -975,7 +975,12 @@ namespace ASTCC {
uint32 weight = weights[plane][j * blockWidth + i];
uint32 C = (C0 * (64 - weight) + C1 * weight + 32) / 64;
p.Component(c) = C >> 8;
if(C == 65535) {
p.Component(c) = 255;
} else {
double Cf = static_cast<double>(C);
p.Component(c) = static_cast<uint16>(255.0 * (Cf / 65536.0) + 0.5);
}
}
outBuf[j * blockWidth + i] = p.Pack();