TextureLoader
textureLoader = new TextureLoader(filename,
this);
BufferedImage texBuff =
textureLoader.getImage().getImage();
Texture
texture = textureLoader.getTexture();
int
width = texture.getWidth();
int height =
texture.getHeight();
// this is the
new image we're going to make
BufferedImage buffer = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB);
for (int x =
0; x < width; x++)
for (int y =
0; y < height; y++)
{
int rgb =
texBuff.getRGB(x,
y);
int a =
128;
// 50% alpha
byte bytes[] =
Convert.intToBytes(rgb);
System.out.print("[" + bytes[0] + "," + bytes[1] + "," + bytes[2] + "," +
bytes[3] + "] becomes ");
int rgba =
rgb + (a <<
24);
buffer.setRGB(x, y, rgba);
bytes =
Convert.intToBytes(buffer.getRGB(x,
y));
System.out.println("[" + bytes[0] + "," + bytes[1] + "," + bytes[2] + "," +
bytes[3] + "].");
}
texture = new
Texture2D(Texture2D.BASE_LEVEL, Texture2D.RGBA, width,
height);
texture.setImage(0, new
ImageComponent2D(ImageComponent2D.FORMAT_RGBA, buffer));
My output looks like
this:
[-1,0,0,0] becomes [127,0,0,0].
[-1,0,0,0]
becomes [127,0,0,0].
[-1,0,0,0] becomes [127,0,0,0].
...etc...
It sure looks to me like the
alpha value is set, but my texture remains opaque. I've verified that
I am using this generated texture by changing 'rgba' to '0' and
'Integer.MAX_VALUE - 1' and got the results I expected (opaque black and
white textures,
respectively).
