/**********************************************************************
     *
     */
    private void updateTexture(String tex, int texTileID, String src, int srcTileID)
    {
        int texID = this.core.renderEngine.getTexture(tex);

        BufferedImage img;
        try
        {
            img = this.getImage(src);
        }
        catch(IOException e)
        {
            e.printStackTrace();
            return;
        }

        GL11.glBindTexture(3553 /* GL_TEXTURE_2D */, texID);

        int w = img.getWidth();
        int h = img.getHeight();
        int imgBuf[] = new int[w * h];
        byte byteBuf[] = new byte[16 * 16 * 4];
        img.getRGB(0, 0, w, h, imgBuf, 0, w);
        int wTiles = w / 16;
        int hTiles = h / 16;
        int sx = (srcTileID % wTiles) * 16;
        int sy = (srcTileID / hTiles) * 16;
        for(int y = 0; y < 16; ++y)
        {
            for(int x = 0; x < 16; ++x)
            {
                int spos = sx + x + ((sy + y) * w);
                int dpos = x + (y * 16);

                int a = (imgBuf[spos] >> 24) & 0xff;
                int r = (imgBuf[spos] >> 16) & 0xff;
                int g = (imgBuf[spos] >> 8) & 0xff;
                int b = imgBuf[spos] & 0xff;
                if((this.core.gameSettings != null) && this.core.gameSettings.anaglyph)
                {
                    int ra = ((r * 30) + (g * 59) + (b * 11)) / 100;
                    int ga = ((r * 30) + (g * 70)) / 100;
                    int ba = ((r * 30) + (b * 70)) / 100;
                    r = ra;
                    g = ga;
                    b = ba;
                }
                byteBuf[(dpos * 4) + 0] = (byte) r;
                byteBuf[(dpos * 4) + 1] = (byte) g;
                byteBuf[(dpos * 4) + 2] = (byte) b;
                byteBuf[(dpos * 4) + 3] = (byte) a;
            }
        }

        this.imageData.clear();
        this.imageData.put(byteBuf);
        this.imageData.position(0).limit(byteBuf.length);
        GL11.glTexSubImage2D(3553 /* GL_TEXTURE_2D */, 0, (texTileID % 16) * 16, (texTileID / 16) * 16, 16, 16, 6408 /* GL_RGBA */, 5121 /* GL_UNSIGNED_BYTE */, this.imageData);
    }