private static RLEPacketType PacketType(Color32[] _arData, int _iPacketPosition)
{
if ((_iPacketPosition != _arData.Length - 1) && EncodeToTGAHelper.Equals(_arData[_iPacketPosition], _arData[_iPacketPosition + 1]))
{
return(RLEPacketType.RLE);
}
else
{
return(RLEPacketType.RAW);
}
}
internal void EndDevelop()
{
#if UNITY_EDITOR
if (null != depthCamera && null != depthCamera.targetTexture)
{
string path = EditorUtility.SaveFilePanel("保存图片", "assets", "", "tga");
if (path.Length > 0)
{
depthCamera.ResetReplacementShader();
depthCamera.Render();
var old = RenderTexture.active;
RenderTexture.active = depthCamera.targetTexture;
Texture2D png = new Texture2D(depthCamera.targetTexture.width, depthCamera.targetTexture.height, TextureFormat.RGBA32, false);
png.ReadPixels(new Rect(0, 0, depthCamera.targetTexture.width, depthCamera.targetTexture.height), 0, 0);
depthCamera.SetReplacementShader(shader, "");
depthCamera.Render();
Texture2D png2 = new Texture2D(depthCamera.targetTexture.width, depthCamera.targetTexture.height, TextureFormat.RGBA32, false);
png2.ReadPixels(new Rect(0, 0, depthCamera.targetTexture.width, depthCamera.targetTexture.height), 0, 0);
Color [] c1s = png.GetPixels();
Color[] c2s = png2.GetPixels();
for (int i = 0; i < c1s.Length; i++)
{
Color c1 = c1s[i];
c1s[i] = new Color(c1.r, c1.g, c1.b, c2s[i].r);
}
png.SetPixels(c1s);
//#if UNITY_EDITOR
//#endif
byte[] dataBytes = EncodeToTGAHelper.EncodeToTGA(png, 4);
//byte[] dataBytes = png.EncodeToPNG();
System.IO.File.WriteAllBytes(path, dataBytes);
int index = path.IndexOf("/Assets/") + 1;
path = path.Substring(index);
AssetDatabase.ImportAsset(path);
ModifyTextureFormat(path, "Standalone", TextureImporterFormat.RGBA32);
ModifyTextureFormat(path, "iPhone", TextureImporterFormat.ASTC_RGBA_4x4);
ModifyTextureFormat(path, "Android", TextureImporterFormat.ASTC_RGBA_4x4);
sceneColorMark = AssetDatabase.LoadAssetAtPath <Texture>(path);
RenderTexture.active = old;
}
if (develop)
{
Matrix4x4 biasMatrix = Matrix4x4.identity;
biasMatrix[0, 0] = 0.5f;
biasMatrix[1, 1] = 0.5f;
biasMatrix[2, 2] = 0.5f;
biasMatrix[0, 3] = 0.5f;
biasMatrix[1, 3] = 0.5f;
biasMatrix[2, 3] = 0.5f;
Matrix4x4 depthProjectionMatrix = depthCamera.projectionMatrix;
Matrix4x4 depthViewMatrix = depthCamera.worldToCameraMatrix;
Matrix4x4 depthVP = depthProjectionMatrix * depthViewMatrix;
depthVPBias = biasMatrix * depthVP;
farClipPlane = depthCamera.farClipPlane;
}
farClipPlane = depthCamera.farClipPlane;
orthographicSize = depthCamera.orthographicSize;
cullingMask = depthCamera.cullingMask;
depthCamera.targetTexture = null;
depthCamera.enabled = false;
depthCamera.hideFlags = HideFlags.HideInInspector | HideFlags.DontSave;
}
develop = false;
#endif
}
public static byte[] EncodeToTGA(this Texture2D _texture2D, int iBytesPerPixel, Compression _compression = Compression.RLE)
{
const int iTgaHeaderSize = 18;
const int iBytesPerPixelRGB24 = 3; // 1 byte per channel (rgb)
const int iBytesPerPixelARGB32 = 4; // ~ (rgba)
//int iBytesPerPixel = format == TextureFormat.ARGB32 || _texture2D.format == TextureFormat.RGBA32
// ? 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)(_compression == Compression.None ? 2 : 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)
Color32[] arPixels = _texture2D.GetPixels32();
if (_compression == Compression.None)
{
// Write all Pixels one after the other
for (int iPixel = 0; iPixel < arPixels.Length; iPixel++)
{
Color32 c32Pixel = arPixels[iPixel];
binaryWriter.Write(c32Pixel.b);
binaryWriter.Write(c32Pixel.g);
binaryWriter.Write(c32Pixel.r);
if (iBytesPerPixel == iBytesPerPixelARGB32)
{
binaryWriter.Write(c32Pixel.a);
}
}
}
else
{
// Write RLE Encoded Pixels
const int iMaxPacketLength = 128;
int iPacketStart = 0;
int iPacketEnd = 0;
while (iPacketStart < arPixels.Length)
{
Color32 c32PreviousPixel = arPixels[iPacketStart];
// Get current Packet Type
RLEPacketType packetType = EncodeToTGAHelper.PacketType(arPixels, iPacketStart);
// Find Packet End
int iReadEnd = Mathf.Min(iPacketStart + iMaxPacketLength, arPixels.Length);
for (iPacketEnd = iPacketStart + 1; iPacketEnd < iReadEnd; ++iPacketEnd)
{
bool bPreviousEqualsCurrent = EncodeToTGAHelper.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 (iBytesPerPixel == iBytesPerPixelARGB32)
{
binaryWriter.Write(c32PreviousPixel.a);
}
break;
case RLEPacketType.RAW:
binaryWriter.Write((byte)(iPacketLength - 1));
for (int iPacketPosition = iPacketStart; iPacketPosition < iPacketEnd; ++iPacketPosition)
{
Color32 c32Pixel = arPixels[iPacketPosition];
binaryWriter.Write(c32Pixel.b);
binaryWriter.Write(c32Pixel.g);
binaryWriter.Write(c32Pixel.r);
if (iBytesPerPixel == iBytesPerPixelARGB32)
{
binaryWriter.Write(c32Pixel.a);
}
}
break;
}
iPacketStart = iPacketEnd;
}
}
binaryWriter.Write(0); // Offset of meta-information (not in use)
binaryWriter.Write(0); // Offset of Developer-Area (not in use)
binaryWriter.Write(c_arV2Signature); // ImageDescriptor (not in use)
}
return(memoryStream.ToArray());
}
}
