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IMAGE: Properly load bottom origin RLE encoded TGA images

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This commit is contained in:
Paul Gilbert 2017-01-01 02:36:01 -05:00
parent 00fd499b57
commit bc039f6b10
1 changed files with 17 additions and 0 deletions
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17
image/tga.cpp
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@ -27,6 +27,7 @@
#include "image/tga.h"
#include "common/util.h"
#include "common/algorithm.h"
#include "common/stream.h"
#include "common/textconsole.h"
#include "common/error.h"
@ -437,6 +438,22 @@ bool TGADecoder::readDataRLE(Common::SeekableReadStream &tga, byte imageType, by
} else {
return false;
}
// If it's a bottom origin image, we need to vertically flip the image
if (!_originTop) {
byte *tempLine = new byte[_surface.pitch];
byte *line1 = (byte *)_surface.getBasePtr(0, 0);
byte *line2 = (byte *)_surface.getBasePtr(0, _surface.h - 1);
for (int y = 0; y < (_surface.h / 2); ++y, line1 += _surface.pitch, line2 -= _surface.pitch) {
Common::copy(line1, line1 + _surface.pitch, tempLine);
Common::copy(line2, line2 + _surface.pitch, line1);
Common::copy(tempLine, tempLine + _surface.pitch, line2);
}
delete[] tempLine;
}
return true;
}