public Texture(URI pngRef, int filter, int wrap) throws IOException {
InputStream input = null;
try {
// get an InputStream from our URL
input = pngRef.toURL().openStream();
// initialize the decoder
PNGDecoder dec = new PNGDecoder(input);
// set up image dimensions
width = dec.getWidth();
height = dec.getHeight();
// we are using RGBA, i.e. 4 components or "bytes per pixel"
final int bpp = 4;
// create a new byte buffer which will hold our pixel data
ByteBuffer buf = BufferUtils.createByteBuffer(bpp * width * height);
// decode the image into the byte buffer, in RGBA format
dec.decode(buf, width * bpp, PNGDecoder.Format.RGBA);
// flip the buffer into "read mode" for OpenGL
buf.flip();
// enable textures and generate an ID
glEnable(target);
id = glGenTextures();
// bind texture
bind();
// setup unpack mode
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
// setup parameters
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, filter);
glTexParameteri(target, GL_TEXTURE_WRAP_S, wrap);
glTexParameteri(target, GL_TEXTURE_WRAP_T, wrap);
// pass RGBA data to OpenGL
glTexImage2D(target, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, buf);
} finally {
if (input != null) {
try {
input.close();
} catch (IOException e) {
}
}
}
}
public Image load(String ID) {
String fullPath = ID;
if (imageRoot != null) {
fullPath = imageRoot.getAbsolutePath() + File.separator + ID;
}
Environment.getEnvironment()
.getOutput(FilesystemImageLoader.OUTPUT)
.println("Image loaded from " + fullPath);
return new AWTImage(PNGDecoder.decode(fullPath));
}
