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Fix bug when going from smaller to higher bit depth

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This commit is contained in:
Pavel Krajcevski 2013-08-31 16:04:58 -04:00
parent ad17404bf7
commit 9a0fbebac3
1 changed files with 2 additions and 1 deletions
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3
PVRTCEncoder/src/Pixel.cpp
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@ -54,6 +54,7 @@
#include <cstring> #include <cstring>
#include <cassert> #include <cassert>
#include <algorithm>
namespace PVRTCC { namespace PVRTCC {
@ -119,8 +120,8 @@ namespace PVRTCC {
uint8 ret = 0; uint8 ret = 0;
while(bitsLeft > oldDepth) { while(bitsLeft > oldDepth) {
ret |= val; ret |= val;
ret <<= oldDepth;
bitsLeft -= oldDepth; bitsLeft -= oldDepth;
ret <<= std::min(bitsLeft, oldDepth);
} }
return ret | (val >> (oldDepth - bitsLeft)); return ret | (val >> (oldDepth - bitsLeft));