videoplane masking challenge


    Sep 29 2011 | 4:37 pm
    Hello community, I'm using the tex_scale_x, tex_scale_y, tex_offset_x and tex_offset_y messages to jit.gl.videoplane to view portions of an incoming image as a texture. I need to be able to apply a mask to a number of these videoplanes to control the shapes of the final images. If I add a mask to the alpha channel of the incoming image it gets scaled and offset with the rest of the image. Is there a way to mask the videoplane image independently of these scalings and offsets? For instance, is it possible to grab the altered texture from the videoplane, add a mask and apply this to a second videoplane.
    Any suggestions are most welcome.
    Thanks,
    Kenneth.

    • Sep 29 2011 | 5:00 pm
      I answered my own question, using td.rota.jxs and a composite shader.
      K.
    • Sep 30 2011 | 5:22 am
      But... it's VERY SLOWWWWW.... arghh... does anyone know of an efficient way to apply a mask to the contents of a videoplane AFTER its' been scaled and offset. I need the mask to remain constant on the plane and see the masked image sliding underneath.
      Thanks in advance,
      Kenneth.
    • Sep 30 2011 | 1:17 pm
      Post a patch, maybe people here will help optimize it.