public void getimage(final Coord ul, final Coord sz, final Callback<BufferedImage> cb) {
gl.bglSubmit(
new BGL.Request() {
public void run(GL2 gl) {
byte[] buf = new byte[sz.x * sz.y * 4];
gl.glReadPixels(
ul.x + tx.x,
root.sz.y - ul.y - sz.y - tx.y,
sz.x,
sz.y,
GL.GL_RGBA,
GL2.GL_UNSIGNED_BYTE,
ByteBuffer.wrap(buf));
checkerr();
for (int y = 0; y < sz.y / 2; y++) {
int to = y * sz.x * 4, bo = (sz.y - y - 1) * sz.x * 4;
for (int o = 0; o < sz.x * 4; o++, to++, bo++) {
byte t = buf[to];
buf[to] = buf[bo];
buf[bo] = t;
}
}
WritableRaster raster =
Raster.createInterleavedRaster(
new DataBufferByte(buf, buf.length),
sz.x,
sz.y,
4 * sz.x,
4,
new int[] {0, 1, 2, 3},
null);
cb.done(new BufferedImage(TexI.glcm, raster, false, null));
}
});
}
public void getpixel(final Coord c, final Callback<Color> cb) {
gl.bglSubmit(
new BGL.Request() {
public void run(GL2 gl) {
byte[] buf = new byte[4];
gl.glReadPixels(
c.x + tx.x,
root.sz.y - c.y - tx.y,
1,
1,
GL.GL_RGBA,
GL2.GL_UNSIGNED_BYTE,
ByteBuffer.wrap(buf));
checkerr();
cb.done(new Color(((int) buf[0]) & 0xff, ((int) buf[1]) & 0xff, ((int) buf[2]) & 0xff));
}
});
}
