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Refactor to FasTC::Replicate where appropriate

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This commit is contained in:
Pavel Krajcevski 2014-03-10 18:56:28 -04:00
parent ed61bcfee4
commit 4e45988caa
1 changed files with 6 additions and 16 deletions
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20
ASTCEncoder/src/Decompressor.cpp
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@ -62,6 +62,7 @@
#include "TexCompTypes.h"
#include "Bits.h"
#include "BitStream.h"
using FasTC::BitStreamReadOnly;
@ -334,24 +335,13 @@ namespace ASTCC {
assert(bitlen >= 1);
uint32 A = 0, B = 0, C = 0, D = 0;
// A is just the lsb replicated 8 times.
for(uint32 i = 0; i < 9; i++) {
A |= bitval & 1;
A <<= 1;
}
// A is just the lsb replicated 9 times.
A = FasTC::Replicate(bitval & 1, 1, 9);
switch(val.GetEncoding()) {
// Replicate bits
case eIntegerEncoding_JustBits: {
uint32 result = bitval;
uint32 resultLen = bitlen;
while(resultLen < 8) {
result <<= bitlen;
result |= bitval & ((1 << std::min(8 - bitlen, bitlen)) - 1);
resultLen += bitlen;
}
out[outIdx++] = result;
}
case eIntegerEncoding_JustBits:
out[outIdx++] = FasTC::Replicate(bitval, bitlen, 8);
break;
// Use algorithm in C.2.13