public static Texture2D GetTextureWithAlpha(Texture2D colorSourceTexture, Texture2D alphaSourceTexture)
{
Texture2D tempAlpha = alphaSourceTexture;
if (!(colorSourceTexture.height == alphaSourceTexture.height && colorSourceTexture.width == alphaSourceTexture.width))
{
//clone and scale the alpha source texture if needed
tempAlpha = GetReadableTextureFromUnreadable(alphaSourceTexture);
TextureScale.Bilinear(tempAlpha, colorSourceTexture.width, colorSourceTexture.height);
}
var result = new Texture2D(colorSourceTexture.width, colorSourceTexture.height);
var originPixels = colorSourceTexture.GetPixels();
var alphaPixels = tempAlpha.GetPixels();
for (int i = 0; i < originPixels.Length; ++i)
{
var col = originPixels[i];
col.a = alphaPixels[i].a;
originPixels[i] = col;
}
result.SetPixels(originPixels);
result.Apply();
//destroy the temp texture if it is created
if (tempAlpha != alphaSourceTexture)
{
GameObject.DestroyImmediate(tempAlpha);
}
return(result);
}
public static byte[] GetRGB24FromTexture2D(this Texture2D texture, Vector2Int size)
{
Color[] pixels = texture.GetPixels();
Texture2D temp = new Texture2D(texture.width, texture.height, TextureFormat.RGB24, false);
temp.SetPixels(pixels);
temp.Apply();
TextureScale.Bilinear(temp, size.x, size.y);
return(temp.GetRawTextureData());
}