private static RLEPacketType PacketType(Color32[] _arData, int _iPacketPosition) { if ((_iPacketPosition != _arData.Length - 1) && ExtTexture.Equals(_arData[_iPacketPosition], _arData[_iPacketPosition + 1])) { return(RLEPacketType.RLE); } else { return(RLEPacketType.RAW); } }
public static Texture2D GetTexture(Color color) { return(ExtTexture.MakeTex(1, 1, color)); }
/// <summary> /// /// </summary> /// <param name="_texture2D"></param> /// <returns></returns> public static byte[] EncodeToTGA(this Texture2D _texture2D) { const int iTgaHeaderSize = 18; const int iBytesPerPixelRGB24 = 3; // 1 byte per channel (rgb) const int iBytesPerPixelARGB32 = 4; // ~ (rgba) var useAlpha = SupportsAlpha(_texture2D.format); int iBytesPerPixel = useAlpha ? iBytesPerPixelARGB32 : iBytesPerPixelRGB24; // using (MemoryStream memoryStream = new MemoryStream(iTgaHeaderSize + _texture2D.width * _texture2D.height * iBytesPerPixel)) { using (BinaryWriter binaryWriter = new BinaryWriter(memoryStream)) { // Write TGA Header binaryWriter.Write((byte)0); // IDLength (not in use) binaryWriter.Write((byte)0); // ColorMapType (not in use) binaryWriter.Write((byte)10); // DataTypeCode == 10 (Runlength encoded RGB images) binaryWriter.Write((short)0); // ColorMapOrigin (not in use) binaryWriter.Write((short)0); // ColorMapLength (not in use) binaryWriter.Write((byte)0); // ColorMapDepth (not in use) binaryWriter.Write((short)0); // Origin X binaryWriter.Write((short)0); // Origin Y binaryWriter.Write((short)_texture2D.width); // Width binaryWriter.Write((short)_texture2D.height); // Height binaryWriter.Write((byte)(iBytesPerPixel * 8)); // Bits Per Pixel binaryWriter.Write((byte)0); // ImageDescriptor (not in use) // Write RLE Encoded Pixels Color32[] arPixels = _texture2D.GetPixels32(); const int iMaxPacketLength = 128; int iPacketStart = 0; int iPacketEnd = 0; while (iPacketStart < arPixels.Length) { Color32 c32PreviousPixel = arPixels[iPacketStart]; // Get current Packet Type RLEPacketType packetType = ExtTexture.PacketType(arPixels, iPacketStart); // Find Packet End int iReadEnd = Mathf.Min(iPacketStart + iMaxPacketLength, arPixels.Length); for (iPacketEnd = iPacketStart + 1; iPacketEnd < iReadEnd; ++iPacketEnd) { bool bPreviousEqualsCurrent = ExtTexture.Equals(arPixels[iPacketEnd - 1], arPixels[iPacketEnd]); // Packet End if change in Packet Type or if max Packet-Size reached if (packetType == RLEPacketType.RAW && bPreviousEqualsCurrent || packetType == RLEPacketType.RLE && !bPreviousEqualsCurrent) { break; } } // Write Packet int iPacketLength = iPacketEnd - iPacketStart; switch (packetType) { case RLEPacketType.RLE: // Add RLE-Bit to PacketLength binaryWriter.Write((byte)((iPacketLength - 1) | (1 << 7))); binaryWriter.Write(c32PreviousPixel.b); binaryWriter.Write(c32PreviousPixel.g); binaryWriter.Write(c32PreviousPixel.r); if (useAlpha) { binaryWriter.Write(c32PreviousPixel.a); } break; case RLEPacketType.RAW: binaryWriter.Write((byte)(iPacketLength - 1)); for (int iPacketPosition = iPacketStart; iPacketPosition < iPacketEnd; ++iPacketPosition) { binaryWriter.Write(arPixels[iPacketPosition].b); binaryWriter.Write(arPixels[iPacketPosition].g); binaryWriter.Write(arPixels[iPacketPosition].r); if (useAlpha) { binaryWriter.Write(arPixels[iPacketPosition].a); } } break; } iPacketStart = iPacketEnd; } } return(memoryStream.GetBuffer()); } }