public void convert2RGBA(TpcTexture texture) {
if (texture.isCompressed()) {
return;
}
for (TpcMipMap mipMap : texture.getMipMaps()) {
if (texture.getFormat() == TpcPixelFormat.RGB) {
convertFromRGB2RGBA(mipMap);
texture.setDataType(PixelDataType.PixelDataType8);
texture.setFormat(TpcPixelFormat.RGBA);
texture.setRawFormat(TpcPixelFormatRaw.RGBA8);
texture.setMinDataSize(4);
} else if (texture.getFormat() == TpcPixelFormat.BGR) {
convertFromBgr2RGBA(mipMap);
texture.setDataType(PixelDataType.PixelDataType8);
texture.setFormat(TpcPixelFormat.RGBA);
texture.setRawFormat(TpcPixelFormatRaw.RGBA8);
texture.setMinDataSize(4);
} else if (texture.getFormat() == TpcPixelFormat.GRAY) {
convertFromGRAY2RGBA(mipMap);
texture.setDataType(PixelDataType.PixelDataType8);
texture.setFormat(TpcPixelFormat.RGBA);
texture.setRawFormat(TpcPixelFormatRaw.RGBA8);
texture.setMinDataSize(4);
}
}
}
public void decompress(TpcTexture texture) throws IOException {
if (!texture.isCompressed()) {
return;
}
if (!(texture.getRawFormat() == TpcPixelFormatRaw.DXT1
|| texture.getRawFormat() == TpcPixelFormatRaw.DXT3
|| texture.getRawFormat() == TpcPixelFormatRaw.DXT5)) {
throw new IllegalArgumentException(
"Bad compression format "
+ texture.getRawFormat()
+ " in texture ["
+ texture.getName()
+ "]");
}
for (TpcMipMap mipMap : texture.getMipMaps()) {
ByteArrayInputStream src =
new ByteArrayInputStream(Arrays.copyOf(mipMap.getData(), mipMap.getData().length));
/* The DXT algorithms work on 4x4 pixel blocks. Textures smaller than one
* block will be padded, but larger textures need to be correctly aligned. */
byte[] result;
if (texture.getRawFormat() == TpcPixelFormatRaw.DXT1) {
result = decompressDxt1(texture, src);
mipMap.setData(result);
mipMap.setSize(mipMap.getWidth() * mipMap.getHeight() * 4);
} else if (texture.getRawFormat() == TpcPixelFormatRaw.DXT5) {
result = decompressDxt5(texture, src);
mipMap.setData(result);
mipMap.setSize(mipMap.getWidth() * mipMap.getHeight() * 4);
verticalMirror(mipMap, 4);
} else if (texture.getRawFormat() == TpcPixelFormatRaw.DXT3) {
throw new RuntimeException("DXT3 uncompression is not implemented yet");
} else {
throw new RuntimeException("Unknown compression");
}
}
texture.setCompressed(false);
texture.setDataType(PixelDataType.PixelDataType8);
texture.setFormat(TpcPixelFormat.RGBA);
texture.setRawFormat(TpcPixelFormatRaw.RGBA8);
texture.setMinDataSize(4);
}