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Groups > comp.lang.javascript > #37276

Canvas render to memory?

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If you want a fast update of the whole canvas can you somehow prerender it to memory, or must you save it as some picture format.

Lets say you have for example sheetnotes, could you somehow prerender all sheet pages and load them, as the piece is played?

Well sheet notes is just an example, i really intend to use it for recorded note rods on<-->off layed out over x number of bars on canvas.

But i think calculate "the sheets" "note rods" while playing the midi, may just be a little to much. But maybe even redraw a full sheet on canvas while playing present a lag.

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Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-16 13:27 -0700
  Re: Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-16 13:30 -0700
    Re: Canvas render to memory? Julio Di Egidio <julio@diegidio.name> - 2019-09-16 14:35 -0700
      Re: Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-16 23:32 -0700
        Re: Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-16 23:35 -0700
        Re: Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-17 00:35 -0700
      Re: Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-17 01:50 -0700
        Re: Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-17 05:45 -0700
          Re: Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-17 05:59 -0700
            Re: Canvas render to memory? Jonas Thörnvall <jonas.thornvall@gmail.com> - 2019-09-17 06:12 -0700
  Re: Canvas render to memory? Arno Welzel <usenet@arnowelzel.de> - 2019-09-16 23:23 +0200

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