c# - Graphics.CopyTexture called with mismatching texture types (src=5 dst=2) - Stack Overflow

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I've got a Texture2DArray object that's storing a bunch of textures used by my terrain via Shader. Within the UI I'm planning to have a series of buttons that show each of these textures for use in a map-editor style interface. The 2d array is 7x7 and I plan to have several different arrays for each biome. So I'd rather re-use the same set of buttons and just refresh the images on each button as needed.

So the basic plan is to pull the Texture2DArray into a List of Texture2D objects and then just assign those Texture2D's as the background images on my buttons.

However when I try to convert from the Texture2DArray to a Texture2D I get an error:

Graphics.CopyTexture called with mismatching texture types (src=5 dst=2)

I've tried a few things to get this value to even change, I've updated the format on my Texture2DArray from default to RGBA 32 bit. I've tried to ensure the generated Texture2D is using this value (see code below) but the values in the error never change. I always get src=5 and dst=2, even when switching the formats to other values such as DXT1.

Here's what I'm trying:

    Texture2DArray texture2DArray = Resources.Load<Texture2DArray>("Textures/BiomeArrays/Default_Temperate/Default_Temperate_baseColor");
    int arrayLength = texture2DArray.depth;
    textures = new Texture2D[arrayLength];

    Debug.Log("Length of Texture2DArray = " + arrayLength);

    for (int i =0; i < arrayLength; i++) {
        Texture2D tex = new Texture2D(texture2DArray.width, texture2DArray.height, TextureFormat.RGBA32, false);
        Graphics.CopyTexture(texture2DArray, tex);
    }

Debugging this code I do see that both objects have the same texture format (RGBA32), and the length of the array from that Debug.Log state is correct so it appears to be loading the array correctly. What is the error actually complaining about if not texture format?

I've got a Texture2DArray object that's storing a bunch of textures used by my terrain via Shader. Within the UI I'm planning to have a series of buttons that show each of these textures for use in a map-editor style interface. The 2d array is 7x7 and I plan to have several different arrays for each biome. So I'd rather re-use the same set of buttons and just refresh the images on each button as needed.

So the basic plan is to pull the Texture2DArray into a List of Texture2D objects and then just assign those Texture2D's as the background images on my buttons.

However when I try to convert from the Texture2DArray to a Texture2D I get an error:

Graphics.CopyTexture called with mismatching texture types (src=5 dst=2)

I've tried a few things to get this value to even change, I've updated the format on my Texture2DArray from default to RGBA 32 bit. I've tried to ensure the generated Texture2D is using this value (see code below) but the values in the error never change. I always get src=5 and dst=2, even when switching the formats to other values such as DXT1.

Here's what I'm trying:

    Texture2DArray texture2DArray = Resources.Load<Texture2DArray>("Textures/BiomeArrays/Default_Temperate/Default_Temperate_baseColor");
    int arrayLength = texture2DArray.depth;
    textures = new Texture2D[arrayLength];

    Debug.Log("Length of Texture2DArray = " + arrayLength);

    for (int i =0; i < arrayLength; i++) {
        Texture2D tex = new Texture2D(texture2DArray.width, texture2DArray.height, TextureFormat.RGBA32, false);
        Graphics.CopyTexture(texture2DArray, tex);
    }

Debugging this code I do see that both objects have the same texture format (RGBA32), and the length of the array from that Debug.Log state is correct so it appears to be loading the array correctly. What is the error actually complaining about if not texture format?

• c#
• unity-game-engine
• texture2d

Share Improve this question Follow edited Feb 21 at 12:56 derHugo 90.9k99 gold badges9090 silver badges134134 bronze badges asked Feb 20 at 18:16 CulyxCulyx 5391010 silver badges1818 bronze badges

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1 Answer 1

Sorted by: Reset to default 0

As you are dealing with a Texture2DArray I think it is not directly compatible with a plain Texture2D using

Graphics.CopyTexture(texture2DArray, tex);

also what would your expected outcome be? It is the very same call for each iteration.

According to the API you would rather have to specify which exact element from the Texture2DArray you want to copy from using e.g. (example snippet from the API without mipmap limits)

// Texture2DArray -> Texture2D
// Global Mipmap Limit: "1: Half Resolution" => errors, since we try to copy into mips that are now too small
for (int mip = 0; mip < outArray.mipmapCount; ++mip)
{
    int copyWidth = width >> mip;
    int copyHeight = height >> mip;
    Graphics.CopyTexture(outArray, 0, mip, 0, 0, copyWidth, copyHeight, outTex, 0, mip, 0, 0);
}

Now in your case where those are not mip levels but individual textures probably something like

Graphics.CopyTexture(outArray, 0, mip, 0, 0, texture2DArray.width, texture2DArray.height, tex, 0, 0, 0, 0);

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