public static Texture2D LoadPNG(string filePath) //Loads a png from a file and returns it (Loads the asset into memory, do only load it once)
{
byte[] spriteBytes;
using (var fileStream = File.OpenRead(filePath))
using (var reader = new BinaryReader(fileStream))
{
var png = PNGTools.ReadPNGFile(reader);
for (int i = png.chunks.Count - 1; i >= 0; i--)
{
var c = png.chunks[i];
if (c.type == EChunkType.gAMA ||
c.type == EChunkType.pHYs ||
c.type == EChunkType.sRBG)
{
png.chunks.RemoveAt(i);
}
}
using (var mem = new MemoryStream())
{
PNGTools.WritePNGFile(png, new BinaryWriter(mem));
spriteBytes = mem.ToArray();
}
}
var tex = new Texture2D(512, 512, TextureFormat.RGBA32, true, false);
tex.LoadImage(spriteBytes); //This resizes the texture width and height
tex.filterMode = FilterMode.Trilinear;
tex.anisoLevel = 9;
tex.mipMapBias = -0.5f;
return(tex);
}
public uint CalcCRC()
{
var crc = PNGTools.UpdateCRC(0xFFFFFFFF, (uint)type);
crc = PNGTools.UpdateCRC(crc, data);
return(crc ^ 0xFFFFFFFF);
}