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GRAPHICS: Add support for true 32bpp DirectBits images

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This commit is contained in:
Matthew Hoops 2011-09-30 12:26:49 -04:00
parent 711d0ff037
commit c0dcfc8060
1 changed files with 24 additions and 5 deletions
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29
graphics/pict.cpp
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@ -331,7 +331,7 @@ void PictDecoder::unpackBitsRect(Common::SeekableReadStream *stream, bool hasPal
if (packBitsData.pixMap.pixelSize <= 8)
bytesPerPixel = 1;
else if (packBitsData.pixMap.pixelSize == 32)
bytesPerPixel = 3;
bytesPerPixel = packBitsData.pixMap.cmpCount;
else
bytesPerPixel = packBitsData.pixMap.pixelSize / 8;
@ -357,10 +357,12 @@ void PictDecoder::unpackBitsRect(Common::SeekableReadStream *stream, bool hasPal
}
}
if (bytesPerPixel == 1) {
switch (bytesPerPixel) {
case 1:
// Just copy to the image
memcpy(_outputSurface->pixels, buffer, _outputSurface->w * _outputSurface->h);
} else if (bytesPerPixel == 2) {
break;
case 2:
// Convert from 16-bit to whatever surface we need
for (uint16 y = 0; y < _outputSurface->h; y++) {
for (uint16 x = 0; x < _outputSurface->w; x++) {
@ -373,7 +375,8 @@ void PictDecoder::unpackBitsRect(Common::SeekableReadStream *stream, bool hasPal
*((uint32 *)_outputSurface->getBasePtr(x, y)) = _pixelFormat.RGBToColor(r, g, b);
}
}
} else {
break;
case 3:
// Convert from 24-bit (planar!) to whatever surface we need
for (uint16 y = 0; y < _outputSurface->h; y++) {
for (uint16 x = 0; x < _outputSurface->w; x++) {
@ -386,6 +389,22 @@ void PictDecoder::unpackBitsRect(Common::SeekableReadStream *stream, bool hasPal
*((uint32 *)_outputSurface->getBasePtr(x, y)) = _pixelFormat.RGBToColor(r, g, b);
}
}
break;
case 4:
// Convert from 32-bit (planar!) to whatever surface we need
for (uint16 y = 0; y < _outputSurface->h; y++) {
for (uint16 x = 0; x < _outputSurface->w; x++) {
byte r = *(buffer + y * _outputSurface->w * 4 + x);
byte g = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w + x);
byte b = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w * 2 + x);
byte a = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w * 3 + x);
if (_pixelFormat.bytesPerPixel == 2)
*((uint16 *)_outputSurface->getBasePtr(x, y)) = _pixelFormat.ARGBToColor(r, g, b, a);
else
*((uint32 *)_outputSurface->getBasePtr(x, y)) = _pixelFormat.ARGBToColor(r, g, b, a);
}
}
break;
}
delete[] buffer;
@ -421,7 +440,7 @@ void PictDecoder::unpackBitsLine(byte *out, uint32 length, Common::SeekableReadS
}
}
// HACK: rowBytes is in 32-bit, but the data is 24-bit...
// HACK: Even if the data is 24-bit, rowBytes is still 32-bit
if (bytesPerPixel == 3)
dataDecoded += length / 4;