Black screen on 4k images on mobile krpano viewer

  • Hello Klaus, hello everyone!

    i would like to report issue on Samsung S9 using krpano viewer on chrome >= 66ver.

    The problem occures while i try run stereo images between 4000 - 4999 px . I got "Black screen", dont see texture, but warps are visible. Over it in console got this errors:
    - VM449:1 WebGL: INVALID_VALUE: texImage2D: bad image data
    - GL_INVALID_OPERATION : glGenerateMipmap: Can not generate mips
    -254[.Offscreen-For-WebGL-0xd59bc300]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.

    I tested diffrents variants like:
    4000-4000px - dose not work
    4001-40001px -does not work
    4096-4096 - does not work
    4097-4097px -works (its not power of 2)
    4098-4098px - works (its not power of 2)
    4496-4496px - works (its not power of 2)
    Another differents resolutions like:
    1024, 2048, 8196 power of 2 (stereo or mono) works fine!!!!

    im tested on 1.19 pre8 - 14 -16 krpano version and problem still exist.

    Additionaly, I want to tell you that on mobile Firefox browser this problem does not occure :)

    what could be the reason? What do you thinks?

    Greetings!!

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