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# lime
  • b
    into my shader-template i am try to avoid 
    layout
    ....
  • b
    ... mhm, is that (location=0) the buffer-index .. i am only roughtly remember.
  • t
    yeah
  • t
    I accidentally did ctrl z instead of ctrl c 🥶
  • b
    i would try only 
    in vec3 aPos;
  • b
    (and for es2/webgl1 without 
    in
    prefix!)
  • t
    god how do I get rid of this

    https://cdn.discordapp.com/attachments/769686258049351722/1103706759589273620/image.png▾

  • t
    👍
  • t
    okay I killed the existing process
  • t
    how do I write
    Copy code
    cpp
sizeof(vertices)
    ?
  • b
    you have to calculate by yourself ... do you need it for 
    gl.drawArrays()
    ?
  • b
    or by 
    drawElement
    ?
  • t
    gl.bufferData
  • b
    ah ok ...
  • t
    so how?
  • b
    show your vertex-data-array ... if all is Float there then 
    * 4
  • t
    Copy code
    var vertices:Array<Float> = [-0.5, -0.5, 0.0, 0.5, -0.5, 0.0, 0.0, 0.5, 0.0];
  • t
    ah alr
  • b
    ok, so only 3 verticises
  • t
    3 * 4?
  • t
    damn it
  • t
    Source/Main.hx:11: Hello World Uncaught exception: Null access Called from Main.render(Main.hx:20)
  • t
    why 😭
  • b
    mhm ... for gl.bufferData() as i am remember it can be 
    vertices.length
  • b
    (but my implementation is different .. i am using 
    gl.ARRAY_BUFFER
    there)
  • t
    ight ill try this
  • b
    and i am also using Bytes to store the vertexdata
  • b
    (so maybe you have to do vertices.length*4 then if all is Float [i am also using mixed types for the attributes])
  • b
    but if you 
    draw
    the bufferdata by array-drawing there you need to give the amount of vertices ( so 3 for your triangle )
  • t
    aight
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