public TextureArray2D Run(TextureArray2D src, Size3 dstSize)
{
Debug.Assert(src.Size != dstSize);
var genMipmaps = src.HasMipmaps;
var numMipmaps = 1;
if (genMipmaps)
{
numMipmaps = ImagesModel.ComputeMaxMipLevels(dstSize);
}
bool changeWidth = dstSize.Width != src.Size.Width;
bool changeHeight = dstSize.Height != src.Size.Height;
if (changeWidth)
{
var curMips = numMipmaps;
if (changeHeight) // only temporary texture with a single mipmap
{
curMips = 1;
}
var tmp = new TextureArray2D(src.NumLayers, curMips, new Size3(dstSize.Width, src.Size.Height), src.Format, false);
Apply(src, tmp, 1, 0);
src = tmp;
}
if (changeHeight)
{
var tmp = new TextureArray2D(src.NumLayers, numMipmaps, dstSize, src.Format, false);
Apply(src, tmp, 0, 1);
if (changeWidth) // delete temporary texture created by width invocation
{
src.Dispose();
}
src = tmp;
}
if (genMipmaps)
{
src.RegenerateMipmapLevels();
}
return(src);
}