How to use

BufferTexture

in

com.watabou.gltextures

@Override
public void reload() {
  super.reload();
  update();
}

  public void update(int top, int bottom){
    bind();
    filter( Texture.LINEAR, Texture.LINEAR );
    wrap( Texture.CLAMP, Texture.CLAMP);
    pixels.position(top*width);
    GLES20.glTexSubImage2D(GLES20.GL_TEXTURE_2D,
        0,
        0,
        top,
        width,
        bottom - top,
        GLES20.GL_RGBA,
        GLES20.GL_UNSIGNED_BYTE,
        pixels);
  }
}

height = height2 * size;
BufferTexture tx = new BufferTexture(width2, height2);
TextureCache.add(FogOfWar.class, tx);
texture( tx );

height = height2 * size;
BufferTexture tx = new BufferTexture(width2, height2);
TextureCache.add(FogOfWar.class, tx);
texture( tx );

public void update(){
  bind();
  filter( Texture.LINEAR, Texture.LINEAR );
  wrap( Texture.CLAMP, Texture.CLAMP);
  pixels.position(0);
  Gdx.gl.glTexImage2D(
      GL20.GL_TEXTURE_2D,
      0,
      GL20.GL_RGBA,
      width,
      height,
      0,
      GL20.GL_RGBA,
      GL20.GL_UNSIGNED_BYTE,
      pixels );
}

@Override
public void reload() {
  super.reload();
  update();
}

  public void update(int top, int bottom){
    bind();
    filter( Texture.LINEAR, Texture.LINEAR );
    wrap( Texture.CLAMP, Texture.CLAMP);
    pixels.position(top*width);
    Gdx.gl.glTexSubImage2D(GL20.GL_TEXTURE_2D,
        0,
        0,
        top,
        width,
        bottom - top,
        GL20.GL_RGBA,
        GL20.GL_UNSIGNED_BYTE,
        pixels);
  }
}

  fog.update(updating.get(0).top * PIX_PER_TILE, updating.get(0).bottom * PIX_PER_TILE);
} else {
  fog.update();

public void update(){
  bind();
  filter( Texture.LINEAR, Texture.LINEAR );
  wrap( Texture.CLAMP, Texture.CLAMP);
  pixels.position(0);
  GLES20.glTexImage2D(
      GLES20.GL_TEXTURE_2D,
      0,
      GLES20.GL_RGBA,
      width,
      height,
      0,
      GLES20.GL_RGBA,
      GLES20.GL_UNSIGNED_BYTE,
      pixels );
}

  fog.update(updating.get(0).top * PIX_PER_TILE, updating.get(0).bottom * PIX_PER_TILE);
} else {
  fog.update();