VertexAnimation/Runtime/Scripts/Texture2DArrayUtils.cs

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using UnityEngine;
namespace TAO.VertexAnimation
{
public static class Texture2DArrayUtils
{
public static Texture2DArray CreateTextureArray(Texture2D[] a_textures, bool a_useMipChain, bool a_isLinear,
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TextureWrapMode a_wrapMode = TextureWrapMode.Repeat, FilterMode a_filterMode = FilterMode.Bilinear, int a_anisoLevel = 1, string a_name = "", bool a_makeNoLongerReadable = true)
{
if(!IsValidForTextureArray(a_textures) || !IsValidCopyTexturePlatform())
{
return null;
}
Texture2DArray textureArray = new Texture2DArray(a_textures[0].width, a_textures[0].height, a_textures.Length, a_textures[0].format, a_useMipChain, a_isLinear);
if (IsValidCopyTexturePlatform())
{
for (int i = 0; i < a_textures.Length; i++)
{
Graphics.CopyTexture(a_textures[i], 0, 0, textureArray, i, 0);
}
}
textureArray.wrapMode = a_wrapMode;
textureArray.filterMode = a_filterMode;
textureArray.anisoLevel = a_anisoLevel;
textureArray.name = a_name;
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textureArray.Apply(false, a_makeNoLongerReadable);
return textureArray;
}
public static bool IsValidForTextureArray(Texture2D[] a_textures)
{
if (a_textures == null || a_textures.Length <= 0)
{
Debug.LogError("No textures assigned!");
return false;
}
for (int i = 0; i < a_textures.Length; i++)
{
if (a_textures[i] == null)
{
Debug.LogError("Texture " + i.ToString() + " not assigned!");
return false;
}
if (a_textures[0].width != a_textures[i].width || a_textures[0].height != a_textures[i].height)
{
Debug.LogError("Texture " + a_textures[i].name + " has a different size!");
return false;
}
if (a_textures[0].format != a_textures[i].format || a_textures[0].graphicsFormat != a_textures[i].graphicsFormat)
{
Debug.LogError("Texture " + a_textures[i].name + " has a different format/graphics format!");
return false;
}
if (!a_textures[0].isReadable)
{
#if UNITY_EDITOR
//Debug.LogWarning("Texture " + a_textures[i].name + " is not readable!");
return true;
#else
Debug.LogError("Texture " + a_textures[i].name + " is not readable!");
return false;
#endif
}
}
return true;
}
public static bool IsValidCopyTexturePlatform()
{
switch (SystemInfo.copyTextureSupport)
{
case UnityEngine.Rendering.CopyTextureSupport.None:
Debug.LogError("No CopyTextureSupport on this platform!");
return false;
case UnityEngine.Rendering.CopyTextureSupport.Basic:
return true;
case UnityEngine.Rendering.CopyTextureSupport.Copy3D:
return true;
case UnityEngine.Rendering.CopyTextureSupport.DifferentTypes:
return true;
case UnityEngine.Rendering.CopyTextureSupport.TextureToRT:
return true;
case UnityEngine.Rendering.CopyTextureSupport.RTToTexture:
return true;
default:
#if UNITY_EDITOR
return true;
#else
Debug.LogError("No CopyTextureSupport on this platform!");
return false;
#endif
}
}
}
}