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When the translator map is enabled the colour values seem to use 4 bits, 0-16. Why not 0-31 I don't know. Anyway virtua on is overflowing these values for some of the smoke effects. For us the numbers were wrapping around. Clamping is enough to fix this. (Thanks model123)

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This commit is contained in:
Ian Curtis 2020-05-07 19:34:22 +00:00
parent 5b406059ce
commit e2ad593e88
1 changed files with 3 additions and 3 deletions
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6
Src/Graphics/New3D/New3D.cpp
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@ -1141,9 +1141,9 @@ void CNew3D::CacheModel(Model *m, const UINT32 *data)
p.faceColour[2] = ((ph.header[4] >> 8) & 0xFF);
if (ph.TranslatorMap()) {
p.faceColour[0] = (p.faceColour[0] * 255) / 16; // When the translator map is enabled, max colour seems
p.faceColour[1] = (p.faceColour[1] * 255) / 16; // to be 16. Scaling these up gives the correct colours.
p.faceColour[2] = (p.faceColour[2] * 255) / 16; // Not sure why didn't allow 32 colours with 4 bits?
p.faceColour[0] = std::min((p.faceColour[0] * 255) / 16, 255); // When the translator map is enabled, max colour seems to be 16. Why not 4 bits?
p.faceColour[1] = std::min((p.faceColour[1] * 255) / 16, 255); // We clamp the result because virtua on will overflow for only the smoke effects
p.faceColour[2] = std::min((p.faceColour[2] * 255) / 16, 255); // It's passing 33 instead of a max of 16.
}
}