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private static final DynamicLibraryBundle cgDynamicLookupHelper;
private static final CgProcAddressTable cgProcAddressTable;
static {
cgProcAddressTable = new CgProcAddressTable();
if(null==cgProcAddressTable) {
throw new RuntimeException("Couldn't instantiate CgProcAddressTable");
}
cgDynamicLookupHelper = AccessController.doPrivileged(new PrivilegedAction<DynamicLibraryBundle>() {
public DynamicLibraryBundle run() {
return new DynamicLibraryBundle(new CgDynamicLibraryBundleInfo());
} } );
if(null==cgDynamicLookupHelper) {
throw new RuntimeException("Null CgDynamicLookupHelper");
}
if(!cgDynamicLookupHelper.isToolLibLoaded()) {
throw new RuntimeException("Couln't load native Cg or CgGL library");
}
if(!cgDynamicLookupHelper.isGlueLibLoaded(CgDynamicLibraryBundleInfo.getCgGlueLibIndex())) {
throw new RuntimeException("Couln't load native GLue/JNI library");
}
cgProcAddressTable.reset(cgDynamicLookupHelper);
}
public static CgProcAddressTable getCgProcAddressTable() { return cgProcAddressTable; }
/** A convenience method which reads all available data from the InputStream and then calls cgCreateProgram. */
public static CGprogram cgCreateProgramFromStream(CGcontext ctx, int program_type, java.io.InputStream stream, int profile, java.lang.String entry, java.lang.String[] args) throws java.io.IOException {
if (stream == null) {
throw new java.io.IOException("null stream");
}
stream = new java.io.BufferedInputStream(stream);
int avail = stream.available();
byte[] data = new byte[avail];
int numRead = 0;
int pos = 0;
do {
if (pos + avail > data.length) {
byte[] newData = new byte[pos + avail];
System.arraycopy(data, 0, newData, 0, pos);
data = newData;
}
numRead = stream.read(data, pos, avail);
if (numRead >= 0) {
pos += numRead;
}
avail = stream.available();
} while (avail > 0 && numRead >= 0);
String program = new String(data, 0, pos, "US-ASCII");
return cgCreateProgram(ctx, program_type, program, profile, entry, args);
}
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