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Need to understand GetRawTextureData but I can't

Discussion in 'General Graphics' started by scossgrove, Jul 5, 2022.

  1. scossgrove

    scossgrove

    Joined:
    Jan 6, 2016
    Posts:
    23
    Hi,

    I have a texture that is 2048x2048 but when I call GetRawTextureData<Color32> I get an array of length 524,288.

    So what I cannot understand is why as 2048*2048 = 4,194,304 and how do I change the array element corresponding to say [10,10].

    Can anyone help?
     
    scossgrove, Jul 5, 2022
    #1

  2. MelvMay

    MelvMay

    Unity Technologies

    Joined:
    May 24, 2013
    Posts:
    10,533
    So you know, the 2D forum here is not related to general graphics questions.

    I'll move your post to the graphics forum for you.
     
    MelvMay, Jul 5, 2022
    #2

  3. joshuacwilde

    joshuacwilde

    Joined:
    Feb 4, 2018
    Posts:
    692
    Probably you are calling it on a texture that is compressed. GetRawTextureData will return the compressed texture data. You need to use a uncompressed texture format to set the colors at runtime, or use a texture that unity supports runtime texture compression for.
     
    joshuacwilde, Jul 5, 2022
    #3

  4. scossgrove

    scossgrove

    Joined:
    Jan 6, 2016
    Posts:
    23
    @joshuauacwilde I believe you are correct as the editor is show 2048x2048 RGB Compressed DXT1|BC1 UNorm when previewing the png.
     
    scossgrove, Jul 5, 2022
    #4
    joshuacwilde likes this.