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Make sure to handle 0 bit depth a bit more gracefully

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This commit is contained in:
Pavel Krajcevski 2013-08-31 16:05:28 -04:00
parent 9a0fbebac3
commit 1ffbdea2b8
1 changed files with 7 additions and 3 deletions
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6
PVRTCEncoder/src/Pixel.cpp
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@ -112,7 +112,7 @@ namespace PVRTCC {
assert(newDepth <= 8); assert(newDepth <= 8);
assert(oldDepth <= 8); assert(oldDepth <= 8);
if(oldDepth == newDepth) { if(oldDepth == newDepth || oldDepth == 0) {
// Do nothing // Do nothing
return val; return val;
} else if(newDepth > oldDepth) { } else if(newDepth > oldDepth) {
@ -128,9 +128,13 @@ namespace PVRTCC {
} else { } else {
// oldDepth > newDepth // oldDepth > newDepth
if(newDepth == 0) {
return 0xFF;
} else {
uint8 bitsWasted = oldDepth - newDepth; uint8 bitsWasted = oldDepth - newDepth;
return val >> bitsWasted; return val >> bitsWasted;
} }
}
assert(!"We shouldn't get here."); assert(!"We shouldn't get here.");
return 0; return 0;