alpha channel issue with jit.lcd

    Nov 27 2018 | 7:47 pm
    Hi all-- I'm running into an issue when trying to draw with transparency in jit.lcd. I'm trying to draw into the LCD object such that the marks appear on a transparent background and can be seamlessly alphablended with another layer. The LCD object works right out the gate, the problem comes when I want to clear the drawing. The 'clear' or 'reset' messages both clear the RGB channels, but they set the alpha channel to full on-- Where there was once no alpha, after I clear or reset the LCD object, there is now full alpha. Any advice on how I might clear the drawing and also clear the alpha channel? Working in Max 8.0.0 Here is a stripped-down demonstration of the problem:

    • May 13 2019 | 8:11 pm
      I am having this same issue in Max 7.
      It happens with Rob Ramirez's answer to this post.
      It all works well if you re-create the jit.lcd object by deleting it and creating it again. But clear and reset just set the alpha channel to full.
    • May 13 2019 | 10:09 pm
      If anyones looking for a semi solution he's a work around simplified from tutorial 29.