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DDS: Fix warning in qfloat16 and test failure on PowerPC

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Fixes the following warning:
```
/home/daniel/kimageformats/src/imageformats/dds.cpp: In function ‘qfloat16 readFloat16(QDataStream&)’:
/home/daniel/kimageformats/src/imageformats/dds.cpp:1037:11: warning: ‘void* memcpy(void*, const void*, size_t)’ copying an object of non-trivial type ‘class qfloat16’ from an array of ‘quint16’ {aka ‘short unsigned int’} [-Wclass-memaccess]
 1037 |     memcpy(&f16, &rawData, sizeof(rawData));
      |     ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/qt6/QtCore/qmetatype.h:14,
                 from /usr/include/qt6/QtCore/qobject.h:18,
                 from /usr/include/qt6/QtCore/qiodevice.h:10,
                 from /usr/include/qt6/QtGui/qimageiohandler.h:9,
                 from /usr/include/qt6/QtGui/QImageIOPlugin:1,
                 from /home/daniel/kimageformats/src/imageformats/dds_p.h:13,
                 from /home/daniel/kimageformats/src/imageformats/dds.cpp:12:
/usr/include/qt6/QtCore/qfloat16.h:46:7: note: ‘class qfloat16’ declared here
   46 | class qfloat16
      |       ^~~~~~~~

```

Should also fixes the following failed tests under PowerPC (32-bits):
```
INFO : rgba16dx10.dds: converting rgba16dx10.dds from RGBA16FPx4 to ARGB32
FAIL : rgba16dx10.dds: differs from rgba16dx10.png
       expected data written to rgba16dx10.dds-expected.data
       actual data written to rgba16dx10.dds-actual.data
```
```
INFO : rgba_f16.dds: converting rgba_f16.dds from RGBA16FPx4 to ARGB32
FAIL : rgba_f16.dds: differs from rgba_f16.png
       expected data written to rgba_f16.dds-expected.data
       actual data written to rgba_f16.dds-actual.data
```
This commit is contained in:
Mirco Miranda
2025-01-15 17:45:57 +00:00
committed by Daniel Novomeský
parent ae00c110f2
commit 5f92bcbf26
7 changed files with 44 additions and 10 deletions
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7
autotests/readtest.cpp
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@ -377,7 +377,12 @@ int main(int argc, char **argv)
<< " to " << formatToString(cmpFormat) << '\n';
expImage = expImage.convertToFormat(cmpFormat);
}
if (fuzzyeq(inputImage, expImage, fuzziness)) {
auto tmpFuzziness = fuzziness;
if (tmpFuzziness == 0) {
// If the fuzziness value is not explicitly set I use the one set for the current image.
tmpFuzziness = timg.fuzziness();
}
if (fuzzyeq(inputImage, expImage, tmpFuzziness)) {
QTextStream(stdout) << "PASS : " << fi.fileName() << "\n";
++passed;
} else {