public static void SetTextureAlpha(this Texture2DArray dstArr, Texture2D src, Texture2D alpha, int dstCh, bool apply = true)
/// Sets RGB to src RGB, and A to desaturated alpha RGB
{
if (alpha == null)
{
dstArr.SetTexture(src, dstCh, apply: apply); return;
} //shortcut if alpha is null
if (!src.IsReadable())
{
src = src.ReadableClone();
}
if (src.format.IsCompressed())
{
src = src.UncompressedClone();
}
if (src.width != dstArr.width || src.height != dstArr.height)
{
src = src.ResizedClone(dstArr.width, dstArr.height);
}
if (!alpha.IsReadable())
{
alpha = alpha.ReadableClone();
}
//if (!alpha.format.IsCompressed()) alpha = alpha.UncompressedClone(); //no need to change alpha format, we will read pixels anyways
if (alpha.width != dstArr.width || alpha.height != dstArr.height)
{
alpha = alpha.ResizedClone(dstArr.width, dstArr.height);
}
Texture2D tmp = new Texture2D(src.width, src.height, TextureFormat.RGBA32, true, src.IsLinear());
int mipmapCount = src.mipmapCount;
for (int m = 0; m < mipmapCount; m++)
{
Color[] srcColors = src.GetPixels(m);
Color[] alphaColors = alpha.GetPixels(m);
for (int i = 0; i < srcColors.Length; i++)
{
srcColors[i] = new Color(srcColors[i].r, srcColors[i].g, srcColors[i].b, alphaColors[i].r * 0.3f + alphaColors[i].r * 0.6f + alphaColors[i].r * 0.1f);
}
tmp.SetPixels(srcColors, m);
}
tmp.Apply(updateMipmaps: false);
dstArr.SetTexture(tmp, dstCh, apply: apply);
}
static public void Clear(this Texture2DArray texArr, int chNum)
/// Fills channel with blank without removing it
{
Texture2D temp = new Texture2D(texArr.width, texArr.height, texArr.format, true, linear: texArr.IsLinear());
texArr.SetTexture(temp, chNum);
}
static public void Switch(this Texture2DArray texArr, int num1, int num2)
{
if (num1 < 0 || num1 >= texArr.depth || num2 < 0 || num2 >= texArr.depth)
{
return;
}
Texture2D temp = texArr.GetTexture(num1);
CopyTexture(texArr, num2, texArr, num1);
texArr.SetTexture(temp, num2);
}
public static Texture2DArray Add(Texture2DArray texArr, Texture2D tex)
{
Texture2DArray newArr = new Texture2DArray(texArr.width, texArr.height, texArr.depth + 1, texArr.format, true, linear: texArr.IsLinear());
newArr.name = texArr.name;
CopyTextures(texArr, newArr, texArr.depth);
newArr.SetTexture(tex, texArr.depth, apply: false);
newArr.Apply(updateMipmaps: false);
return(newArr);
}
public void ApplySource(int ch)
{
#if UNITY_EDITOR
if (srcArr[ch].alpha == null)
{
if (srcArr[ch].source != null)
{
texArr.SetTexture(srcArr[ch].source, ch, apply: true);
}
}
else
{
if (srcArr[ch].source != null)
{
texArr.SetTextureAlpha(srcArr[ch].source, srcArr[ch].alpha, ch, apply: true);
}
}
srcArr[ch].preview = null; //resetting preview not keeping it. It will be generated on next get
#endif
}
static public Texture2DArray Insert(Texture2DArray texArr, int pos, Texture2D tex)
{
bool linear = texArr.IsLinear();
if (texArr == null || texArr.depth == 0)
{
texArr = new Texture2DArray(tex.width, tex.height, 1, texArr.format, true, linear: linear);
texArr.filterMode = FilterMode.Trilinear;
texArr.SetTexture(tex, 0, apply: false);
return(texArr);
}
if (pos > texArr.depth || pos < 0)
{
pos = texArr.depth;
}
Texture2DArray newArr = new Texture2DArray(texArr.width, texArr.height, texArr.depth + 1, texArr.format, true, linear: linear);
newArr.name = texArr.name;
if (pos != 0)
{
CopyTextures(texArr, newArr, pos);
}
if (pos != texArr.depth)
{
CopyTextures(texArr, pos, newArr, pos + 1, texArr.depth - pos);
}
if (tex != null)
{
newArr.SetTexture(tex, pos, apply: false);
}
newArr.Apply(updateMipmaps: false);
return(newArr);
}