void TXB::readData(Common::SeekableReadStream &txb, bool needDeSwizzle) {
for (std::vector<MipMap *>::iterator mipMap = _mipMaps.begin(); mipMap != _mipMaps.end(); ++mipMap) {
// If the texture width is a power of two, the texture memory layout is "swizzled"
const bool widthPOT = ((*mipMap)->width & ((*mipMap)->width - 1)) == 0;
const bool swizzled = needDeSwizzle && widthPOT;
(*mipMap)->data = new byte[(*mipMap)->size];
if (swizzled) {
byte *tmp = new byte[(*mipMap)->size];
if (txb.read(tmp, (*mipMap)->size) != (*mipMap)->size)
throw Common::Exception(Common::kReadError);
deSwizzle((*mipMap)->data, tmp, (*mipMap)->width, (*mipMap)->height);
delete[] tmp;
} else {
if (txb.read((*mipMap)->data, (*mipMap)->size) != (*mipMap)->size)
throw Common::Exception(Common::kReadError);
}
}
}
void TPC::readData(Common::SeekableReadStream &tpc, byte encoding) {
for (std::vector<MipMap *>::iterator mipMap = _mipMaps.begin(); mipMap != _mipMaps.end(); ++mipMap) {
// If the texture width is a power of two, the texture memory layout is "swizzled"
const bool widthPOT = ((*mipMap)->width & ((*mipMap)->width - 1)) == 0;
const bool swizzled = (encoding == kEncodingSwizzledBGRA) && widthPOT;
(*mipMap)->data = new byte[(*mipMap)->size];
if (swizzled) {
std::vector<byte> tmp((*mipMap)->size);
if (tpc.read(&tmp[0], (*mipMap)->size) != (*mipMap)->size)
throw Common::Exception(Common::kReadError);
deSwizzle((*mipMap)->data, &tmp[0], (*mipMap)->width, (*mipMap)->height);
} else {
if (tpc.read((*mipMap)->data, (*mipMap)->size) != (*mipMap)->size)
throw Common::Exception(Common::kReadError);
// Unpacking 8bpp grayscale data into RGB
if (encoding == kEncodingGray) {
byte *dataGray = (*mipMap)->data;
(*mipMap)->size = (*mipMap)->width * (*mipMap)->height * 3;
(*mipMap)->data = new byte[(*mipMap)->size];
for (int i = 0; i < ((*mipMap)->width * (*mipMap)->height); i++)
memset((*mipMap)->data + i * 3, dataGray[i], 3);
delete[] dataGray;
}
}
}
}
