using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
namespace AssetStudio
{
public class Texture2DConverter
{
//Texture2D
private int m_Width;
private int m_Height;
private TextureFormat m_TextureFormat;
private int image_data_size;
private byte[] image_data;
private int[] version;
//DDS Start
private byte[] dwMagic = { 0x44, 0x44, 0x53, 0x20, 0x7c };
private int dwFlags = 0x1 + 0x2 + 0x4 + 0x1000;
//public int dwHeight; m_Height
//public int dwWidth; m_Width
private int dwPitchOrLinearSize;
private int dwMipMapCount = 0x1;
private int dwSize = 0x20;
private int dwFlags2;
private int dwFourCC;
private int dwRGBBitCount;
private int dwRBitMask;
private int dwGBitMask;
private int dwBBitMask;
private int dwABitMask;
private int dwCaps = 0x1000;
private int dwCaps2 = 0x0;
//DDS End
//PVR Start
private int pvrVersion = 0x03525650;
private int pvrFlags = 0x0;
private long pvrPixelFormat;
private int pvrColourSpace = 0x0;
private int pvrChannelType = 0x0;
//public int pvrHeight; m_Height
//public int pvrWidth; m_Width
private int pvrDepth = 0x1;
private int pvrNumSurfaces = 0x1; //For texture arrays
private int pvrNumFaces = 0x1; //For cube maps
//public int pvrMIPMapCount; dwMipMapCount
private int pvrMetaDataSize = 0x0;
//PVR End
//KTX Start
private int glType = 0;
private int glTypeSize = 1;
private int glFormat = 0;
private int glInternalFormat;
private int glBaseInternalFormat;
//public int pixelWidth; m_Width
//public int pixelHeight; m_Height
private int pixelDepth = 0;
private int numberOfArrayElements = 0;
private int numberOfFaces = 1;
private int numberOfMipmapLevels = 1;
private int bytesOfKeyValueData = 0;
//KTX End
//TextureConverter
private QFORMAT q_format;
//texgenpack
private texgenpack_texturetype texturetype;
[DllImport("PVRTexLibWrapper.dll", CallingConvention = CallingConvention.Cdecl)]
private static extern bool DecompressPVR(byte[] buffer, IntPtr bmp, int len);
[DllImport("TextureConverterWrapper.dll", CallingConvention = CallingConvention.Cdecl)]
private static extern bool Ponvert(byte[] buffer, IntPtr bmp, int nWidth, int nHeight, int len, int type, int bmpsize, bool fixAlpha);
[DllImport("crunch.dll", CallingConvention = CallingConvention.Cdecl)]
private static extern bool DecompressCRN(byte[] pSrc_file_data, int src_file_size, out IntPtr uncompressedData, out int uncompressedSize);
[DllImport("crunchunity.dll", CallingConvention = CallingConvention.Cdecl)]
private static extern bool DecompressUnityCRN(byte[] pSrc_file_data, int src_file_size, out IntPtr uncompressedData, out int uncompressedSize);
[DllImport("texgenpack.dll", CallingConvention = CallingConvention.Cdecl)]
private static extern void Decode(int texturetype, byte[] texturedata, int width, int height, IntPtr bmp);
public Texture2DConverter(Texture2D m_Texture2D)
{
var image_data_value = m_Texture2D.image_data.Value;
image_data_size = image_data_value.Length;
image_data = new byte[image_data_size];
Buffer.BlockCopy(image_data_value, 0, image_data, 0, image_data_size);
m_Width = m_Texture2D.m_Width;
m_Height = m_Texture2D.m_Height;
m_TextureFormat = m_Texture2D.m_TextureFormat;
var mMipMap = m_Texture2D.m_MipMap;
version = m_Texture2D.version;
var platform = m_Texture2D.platform;
if (version[0] < 5 || (version[0] == 5 && version[1] < 2))//5.2 down
{
if (mMipMap)
{
dwFlags += 0x20000;
dwMipMapCount = Convert.ToInt32(Math.Log(Math.Max(m_Width, m_Height)) / Math.Log(2));
dwCaps += 0x400008;
}
}
else
{
dwFlags += 0x20000;
dwMipMapCount = m_Texture2D.m_MipCount;
dwCaps += 0x400008;
}
switch (m_TextureFormat)
{
//TODO 导出到DDS容器时应该用原像素还是转换以后的像素？
case TextureFormat.Alpha8: //test pass
{
/*dwFlags2 = 0x2;
dwRGBBitCount = 0x8;
dwRBitMask = 0x0;
dwGBitMask = 0x0;
dwBBitMask = 0x0;
dwABitMask = 0xFF; */
//转BGRA32
var BGRA32 = Enumerable.Repeat<byte>(0xFF, image_data_size * 4).ToArray();
for (var i = 0; i < image_data_size; i++)
{
BGRA32[i * 4 + 3] = image_data[i];
}
SetBGRA32Info(BGRA32);
break;
}
case TextureFormat.ARGB4444: //test pass
{
SwapBytesForXbox(platform);
/*dwFlags2 = 0x41;
dwRGBBitCount = 0x10;
dwRBitMask = 0xF00;
dwGBitMask = 0xF0;
dwBBitMask = 0xF;
dwABitMask = 0xF000;*/
//转BGRA32
var BGRA32 = new byte[image_data_size * 2];
for (var i = 0; i < image_data_size / 2; i++)
{
var pixelNew = new byte[4];
var pixelOldShort = BitConverter.ToUInt16(image_data, i * 2);
pixelNew[0] = (byte)(pixelOldShort & 0x000f);
pixelNew[1] = (byte)((pixelOldShort & 0x00f0) >> 4);
pixelNew[2] = (byte)((pixelOldShort & 0x0f00) >> 8);
pixelNew[3] = (byte)((pixelOldShort & 0xf000) >> 12);
// convert range
for (var j = 0; j < 4; j++)
pixelNew[j] = (byte)((pixelNew[j] << 4) | pixelNew[j]);
pixelNew.CopyTo(BGRA32, i * 4);
}
SetBGRA32Info(BGRA32);
break;
}
case TextureFormat.RGB24: //test pass
{
/*dwFlags2 = 0x40;
dwRGBBitCount = 0x18;
dwRBitMask = 0xFF;
dwGBitMask = 0xFF00;
dwBBitMask = 0xFF0000;
dwABitMask = 0x0;*/
//转BGRA32
var BGRA32 = new byte[image_data_size / 3 * 4];
for (var i = 0; i < image_data_size / 3; i++)
{
BGRA32[i * 4] = image_data[i * 3 + 2];
BGRA32[i * 4 + 1] = image_data[i * 3 + 1];
BGRA32[i * 4 + 2] = image_data[i * 3 + 0];
BGRA32[i * 4 + 3] = 255;
}
SetBGRA32Info(BGRA32);
break;
}
case TextureFormat.RGBA32: //test pass
{
/*dwFlags2 = 0x41;
dwRGBBitCount = 0x20;
dwRBitMask = 0xFF;
dwGBitMask = 0xFF00;
dwBBitMask = 0xFF0000;
dwABitMask = -16777216;*/
//转BGRA32
var BGRA32 = new byte[image_data_size];
for (var i = 0; i < image_data_size; i += 4)
{
BGRA32[i] = image_data[i + 2];
BGRA32[i + 1] = image_data[i + 1];
BGRA32[i + 2] = image_data[i + 0];
BGRA32[i + 3] = image_data[i + 3];
}
SetBGRA32Info(BGRA32);
break;
}
case TextureFormat.ARGB32://test pass
{
/*dwFlags2 = 0x41;
dwRGBBitCount = 0x20;
dwRBitMask = 0xFF00;
dwGBitMask = 0xFF0000;
dwBBitMask = -16777216;
dwABitMask = 0xFF;*/
//转BGRA32
var BGRA32 = new byte[image_data_size];
for (var i = 0; i < image_data_size; i += 4)
{
BGRA32[i] = image_data[i + 3];
BGRA32[i + 1] = image_data[i + 2];
BGRA32[i + 2] = image_data[i + 1];
BGRA32[i + 3] = image_data[i + 0];
}
SetBGRA32Info(BGRA32);
break;
}
case TextureFormat.RGB565: //test pass
{
SwapBytesForXbox(platform);
dwFlags2 = 0x40;
dwRGBBitCount = 0x10;
dwRBitMask = 0xF800;
dwGBitMask = 0x7E0;
dwBBitMask = 0x1F;
dwABitMask = 0x0;
break;
}
case TextureFormat.R16: //test pass
{
//转BGRA32
var BGRA32 = new byte[image_data_size * 2];
for (var i = 0; i < image_data_size; i += 2)
{
float f = Half.ToHalf(image_data, i);
BGRA32[i * 2 + 2] = (byte)Math.Ceiling(f * 255);//R
BGRA32[i * 2 + 3] = 255;//A
}
SetBGRA32Info(BGRA32);
break;
}
case TextureFormat.DXT1: //test pass
case TextureFormat.DXT1Crunched: //test pass
{
SwapBytesForXbox(platform);
if (mMipMap)
{
dwPitchOrLinearSize = m_Height * m_Width / 2;
}
dwFlags2 = 0x4;
dwFourCC = 0x31545844;
dwRGBBitCount = 0x0;
dwRBitMask = 0x0;
dwGBitMask = 0x0;
dwBBitMask = 0x0;
dwABitMask = 0x0;
q_format = QFORMAT.Q_FORMAT_S3TC_DXT1_RGB;
break;
}
case TextureFormat.DXT5: //test pass
case TextureFormat.DXT5Crunched: //test pass
{
SwapBytesForXbox(platform);
if (mMipMap)
{
dwPitchOrLinearSize = m_Height * m_Width / 2;
}
dwFlags2 = 0x4;
dwFourCC = 0x35545844;
dwRGBBitCount = 0x0;
dwRBitMask = 0x0;
dwGBitMask = 0x0;
dwBBitMask = 0x0;
dwABitMask = 0x0;
q_format = QFORMAT.Q_FORMAT_S3TC_DXT5_RGBA;
break;
}
case TextureFormat.RGBA4444: //test pass
{
/*dwFlags2 = 0x41;
dwRGBBitCount = 0x10;
dwRBitMask = 0xF000;
dwGBitMask = 0xF00;
dwBBitMask = 0xF0;
dwABitMask = 0xF;*/
//转BGRA32
var BGRA32 = new byte[image_data_size * 2];
for (var i = 0; i < image_data_size / 2; i++)
{
var pixelNew = new byte[4];
var pixelOldShort = BitConverter.ToUInt16(image_data, i * 2);
pixelNew[0] = (byte)((pixelOldShort & 0x00f0) >> 4);
pixelNew[1] = (byte)((pixelOldShort & 0x0f00) >> 8);
pixelNew[2] = (byte)((pixelOldShort & 0xf000) >> 12);
pixelNew[3] = (byte)(pixelOldShort & 0x000f);
// convert range
for (var j = 0; j < 4; j++)
pixelNew[j] = (byte)((pixelNew[j] << 4) | pixelNew[j]);
pixelNew.CopyTo(BGRA32, i * 4);
}
SetBGRA32Info(BGRA32);
break;
}
case TextureFormat.BGRA32: //test pass
{
dwFlags2 = 0x41;
dwRGBBitCount = 0x20;
dwRBitMask = 0xFF0000;
dwGBitMask = 0xFF00;
dwBBitMask = 0xFF;
dwABitMask = -16777216;
break;
}
case TextureFormat.RHalf: //test pass
{
q_format = QFORMAT.Q_FORMAT_R_16F;
glInternalFormat = KTXHeader.GL_R16F;
glBaseInternalFormat = KTXHeader.GL_RED;
break;
}
case TextureFormat.RGHalf: //test pass
{
q_format = QFORMAT.Q_FORMAT_RG_HF;
glInternalFormat = KTXHeader.GL_RG16F;
glBaseInternalFormat = KTXHeader.GL_RG;
break;
}
case TextureFormat.RGBAHalf: //test pass
{
q_format = QFORMAT.Q_FORMAT_RGBA_HF;
glInternalFormat = KTXHeader.GL_RGBA16F;
glBaseInternalFormat = KTXHeader.GL_RGBA;
break;
}
case TextureFormat.RFloat: //test pass
{
q_format = QFORMAT.Q_FORMAT_R_F;
glInternalFormat = KTXHeader.GL_R32F;
glBaseInternalFormat = KTXHeader.GL_RED;
break;
}
case TextureFormat.RGFloat: //test pass
{
q_format = QFORMAT.Q_FORMAT_RG_F;
glInternalFormat = KTXHeader.GL_RG32F;
glBaseInternalFormat = KTXHeader.GL_RG;
break;
}
case TextureFormat.RGBAFloat: //test pass
{
q_format = QFORMAT.Q_FORMAT_RGBA_F;
glInternalFormat = KTXHeader.GL_RGBA32F;
glBaseInternalFormat = KTXHeader.GL_RGBA;
break;
}
case TextureFormat.YUY2: //test pass
{
pvrPixelFormat = 17;
break;
}
case TextureFormat.RGB9e5Float: //TODO Test failure
{
q_format = QFORMAT.Q_FORMAT_RGB9_E5;
break;
}
case TextureFormat.BC4: //test pass
{
texturetype = texgenpack_texturetype.RGTC1;
glInternalFormat = KTXHeader.GL_COMPRESSED_RED_RGTC1;
glBaseInternalFormat = KTXHeader.GL_RED;
break;
}
case TextureFormat.BC5: //test pass
{
texturetype = texgenpack_texturetype.RGTC2;
glInternalFormat = KTXHeader.GL_COMPRESSED_RG_RGTC2;
glBaseInternalFormat = KTXHeader.GL_RG;
break;
}
case TextureFormat.BC6H: //test pass
{
texturetype = texgenpack_texturetype.BPTC_FLOAT;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT;
glBaseInternalFormat = KTXHeader.GL_RGB;
break;
}
case TextureFormat.BC7: //test pass
{
texturetype = texgenpack_texturetype.BPTC;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGBA_BPTC_UNORM;
glBaseInternalFormat = KTXHeader.GL_RGBA;
break;
}
case TextureFormat.PVRTC_RGB2: //test pass
{
pvrPixelFormat = 0;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
glBaseInternalFormat = KTXHeader.GL_RGB;
break;
}
case TextureFormat.PVRTC_RGBA2: //test pass
{
pvrPixelFormat = 1;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
glBaseInternalFormat = KTXHeader.GL_RGBA;
break;
}
case TextureFormat.PVRTC_RGB4: //test pass
{
pvrPixelFormat = 2;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
glBaseInternalFormat = KTXHeader.GL_RGB;
break;
}
case TextureFormat.PVRTC_RGBA4: //test pass
{
pvrPixelFormat = 3;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
glBaseInternalFormat = KTXHeader.GL_RGBA;
break;
}
case TextureFormat.ETC_RGB4Crunched: //test pass
case TextureFormat.ETC_RGB4_3DS: //test pass
case TextureFormat.ETC_RGB4: //test pass
{
pvrPixelFormat = 6;
glInternalFormat = KTXHeader.GL_ETC1_RGB8_OES;
glBaseInternalFormat = KTXHeader.GL_RGB;
break;
}
case TextureFormat.ATC_RGB4: //test pass
{
q_format = QFORMAT.Q_FORMAT_ATITC_RGB;
glInternalFormat = KTXHeader.GL_ATC_RGB_AMD;
glBaseInternalFormat = KTXHeader.GL_RGB;
break;
}
case TextureFormat.ATC_RGBA8: //test pass
{
q_format = QFORMAT.Q_FORMAT_ATC_RGBA_INTERPOLATED_ALPHA;
glInternalFormat = KTXHeader.GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD;
glBaseInternalFormat = KTXHeader.GL_RGBA;
break;
}
case TextureFormat.EAC_R: //test pass
{
q_format = QFORMAT.Q_FORMAT_EAC_R_UNSIGNED;
glInternalFormat = KTXHeader.GL_COMPRESSED_R11_EAC;
glBaseInternalFormat = KTXHeader.GL_RED;
break;
}
case TextureFormat.EAC_R_SIGNED: //test pass
{
q_format = QFORMAT.Q_FORMAT_EAC_R_SIGNED;
glInternalFormat = KTXHeader.GL_COMPRESSED_SIGNED_R11_EAC;
glBaseInternalFormat = KTXHeader.GL_RED;
break;
}
case TextureFormat.EAC_RG: //test pass
{
q_format = QFORMAT.Q_FORMAT_EAC_RG_UNSIGNED;
glInternalFormat = KTXHeader.GL_COMPRESSED_RG11_EAC;
glBaseInternalFormat = KTXHeader.GL_RG;
break;
}
case TextureFormat.EAC_RG_SIGNED: //test pass
{
q_format = QFORMAT.Q_FORMAT_EAC_RG_SIGNED;
glInternalFormat = KTXHeader.GL_COMPRESSED_SIGNED_RG11_EAC;
glBaseInternalFormat = KTXHeader.GL_RG;
break;
}
case TextureFormat.ETC2_RGB: //test pass
{
pvrPixelFormat = 22;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGB8_ETC2;
glBaseInternalFormat = KTXHeader.GL_RGB;
break;
}
case TextureFormat.ETC2_RGBA1: //test pass
{
pvrPixelFormat = 24;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2;
glBaseInternalFormat = KTXHeader.GL_RGBA;
break;
}
case TextureFormat.ETC2_RGBA8Crunched: //test pass
case TextureFormat.ETC_RGBA8_3DS: //test pass
case TextureFormat.ETC2_RGBA8: //test pass
{
pvrPixelFormat = 23;
glInternalFormat = KTXHeader.GL_COMPRESSED_RGBA8_ETC2_EAC;
glBaseInternalFormat = KTXHeader.GL_RGBA;
break;
}
case TextureFormat.ASTC_RGB_4x4: //test pass
case TextureFormat.ASTC_RGBA_4x4: //test pass
{
pvrPixelFormat = 27;
break;
}
case TextureFormat.ASTC_RGB_5x5: //test pass
case TextureFormat.ASTC_RGBA_5x5: //test pass
{
pvrPixelFormat = 29;
break;
}
case TextureFormat.ASTC_RGB_6x6: //test pass
case TextureFormat.ASTC_RGBA_6x6: //test pass
{
pvrPixelFormat = 31;
break;
}
case TextureFormat.ASTC_RGB_8x8: //test pass
case TextureFormat.ASTC_RGBA_8x8: //test pass
{
pvrPixelFormat = 34;
break;
}
case TextureFormat.ASTC_RGB_10x10: //test pass
case TextureFormat.ASTC_RGBA_10x10: //test pass
{
pvrPixelFormat = 38;
break;
}
case TextureFormat.ASTC_RGB_12x12: //test pass
case TextureFormat.ASTC_RGBA_12x12: //test pass
{
pvrPixelFormat = 40;
break;
}
case TextureFormat.RG16: //test pass
{
//转BGRA32
var BGRA32 = new byte[image_data_size * 2];
for (var i = 0; i < image_data_size; i += 2)
{
BGRA32[i * 2 + 1] = image_data[i + 1];//G
BGRA32[i * 2 + 2] = image_data[i];//R
BGRA32[i * 2 + 3] = 255;//A
}
SetBGRA32Info(BGRA32);
break;
}
case TextureFormat.R8: //test pass
{
//转BGRA32
var BGRA32 = new byte[image_data_size * 4];
for (var i = 0; i < image_data_size; i++)
{
BGRA32[i * 4 + 2] = image_data[i];//R
BGRA32[i * 4 + 3] = 255;//A
}
SetBGRA32Info(BGRA32);
break;
}
}
}
private void SetBGRA32Info(byte[] BGRA32)
{
image_data = BGRA32;
image_data_size = BGRA32.Length;
dwFlags2 = 0x41;
dwRGBBitCount = 0x20;
dwRBitMask = 0xFF0000;
dwGBitMask = 0xFF00;
dwBBitMask = 0xFF;
dwABitMask = -16777216;
}
private void SwapBytesForXbox(BuildTarget platform)
{
if (platform == BuildTarget.XBOX360) //swap bytes for Xbox confirmed, PS3 not encountered
{
for (var i = 0; i < image_data_size / 2; i++)
{
var b0 = image_data[i * 2];
image_data[i * 2] = image_data[i * 2 + 1];
image_data[i * 2 + 1] = b0;
}
}
}
public string GetExtensionName()
{
switch (m_TextureFormat)
{
case TextureFormat.Alpha8:
case TextureFormat.ARGB4444:
case TextureFormat.RGB24:
case TextureFormat.RGBA32:
case TextureFormat.ARGB32:
case TextureFormat.RGB565:
case TextureFormat.R16:
case TextureFormat.DXT1:
case TextureFormat.DXT5:
case TextureFormat.RGBA4444:
case TextureFormat.BGRA32:
case TextureFormat.RG16:
case TextureFormat.R8:
return ".dds";
case TextureFormat.DXT1Crunched:
case TextureFormat.DXT5Crunched:
case TextureFormat.ETC_RGB4Crunched:
case TextureFormat.ETC2_RGBA8Crunched:
return ".crn";
case TextureFormat.YUY2:
case TextureFormat.PVRTC_RGB2:
case TextureFormat.PVRTC_RGBA2:
case TextureFormat.PVRTC_RGB4:
case TextureFormat.PVRTC_RGBA4:
case TextureFormat.ETC_RGB4:
case TextureFormat.ETC2_RGB:
case TextureFormat.ETC2_RGBA1:
case TextureFormat.ETC2_RGBA8:
case TextureFormat.ASTC_RGB_4x4:
case TextureFormat.ASTC_RGB_5x5:
case TextureFormat.ASTC_RGB_6x6:
case TextureFormat.ASTC_RGB_8x8:
case TextureFormat.ASTC_RGB_10x10:
case TextureFormat.ASTC_RGB_12x12:
case TextureFormat.ASTC_RGBA_4x4:
case TextureFormat.ASTC_RGBA_5x5:
case TextureFormat.ASTC_RGBA_6x6:
case TextureFormat.ASTC_RGBA_8x8:
case TextureFormat.ASTC_RGBA_10x10:
case TextureFormat.ASTC_RGBA_12x12:
case TextureFormat.ETC_RGB4_3DS:
case TextureFormat.ETC_RGBA8_3DS:
return ".pvr";
case TextureFormat.RHalf:
case TextureFormat.RGHalf:
case TextureFormat.RGBAHalf:
case TextureFormat.RFloat:
case TextureFormat.RGFloat:
case TextureFormat.RGBAFloat:
case TextureFormat.BC4:
case TextureFormat.BC5:
case TextureFormat.BC6H:
case TextureFormat.BC7:
case TextureFormat.ATC_RGB4:
case TextureFormat.ATC_RGBA8:
case TextureFormat.EAC_R:
case TextureFormat.EAC_R_SIGNED:
case TextureFormat.EAC_RG:
case TextureFormat.EAC_RG_SIGNED:
return ".ktx";
default:
return ".tex";
}
}
public byte[] ConvertToContainer()
{
if (image_data == null || image_data.Length == 0)
return null;
switch (m_TextureFormat)
{
case TextureFormat.Alpha8:
case TextureFormat.ARGB4444:
case TextureFormat.RGB24:
case TextureFormat.RGBA32:
case TextureFormat.ARGB32:
case TextureFormat.RGB565:
case TextureFormat.R16:
case TextureFormat.DXT1:
case TextureFormat.DXT5:
case TextureFormat.RGBA4444:
case TextureFormat.BGRA32:
case TextureFormat.RG16:
case TextureFormat.R8:
return ConvertToDDS();
case TextureFormat.YUY2:
case TextureFormat.PVRTC_RGB2:
case TextureFormat.PVRTC_RGBA2:
case TextureFormat.PVRTC_RGB4:
case TextureFormat.PVRTC_RGBA4:
case TextureFormat.ETC_RGB4:
case TextureFormat.ETC2_RGB:
case TextureFormat.ETC2_RGBA1:
case TextureFormat.ETC2_RGBA8:
case TextureFormat.ASTC_RGB_4x4:
case TextureFormat.ASTC_RGB_5x5:
case TextureFormat.ASTC_RGB_6x6:
case TextureFormat.ASTC_RGB_8x8:
case TextureFormat.ASTC_RGB_10x10:
case TextureFormat.ASTC_RGB_12x12:
case TextureFormat.ASTC_RGBA_4x4:
case TextureFormat.ASTC_RGBA_5x5:
case TextureFormat.ASTC_RGBA_6x6:
case TextureFormat.ASTC_RGBA_8x8:
case TextureFormat.ASTC_RGBA_10x10:
case TextureFormat.ASTC_RGBA_12x12:
case TextureFormat.ETC_RGB4_3DS:
case TextureFormat.ETC_RGBA8_3DS:
return ConvertToPVR();
case TextureFormat.RHalf:
case TextureFormat.RGHalf:
case TextureFormat.RGBAHalf:
case TextureFormat.RFloat:
case TextureFormat.RGFloat:
case TextureFormat.RGBAFloat:
case TextureFormat.BC4:
case TextureFormat.BC5:
case TextureFormat.BC6H:
case TextureFormat.BC7:
case TextureFormat.ATC_RGB4:
case TextureFormat.ATC_RGBA8:
case TextureFormat.EAC_R:
case TextureFormat.EAC_R_SIGNED:
case TextureFormat.EAC_RG:
case TextureFormat.EAC_RG_SIGNED:
return ConvertToKTX();
default:
return image_data;
}
}
private byte[] ConvertToDDS()
{
var imageBuffer = new byte[128 + image_data_size];
dwMagic.CopyTo(imageBuffer, 0);
BitConverter.GetBytes(dwFlags).CopyTo(imageBuffer, 8);
BitConverter.GetBytes(m_Height).CopyTo(imageBuffer, 12);
BitConverter.GetBytes(m_Width).CopyTo(imageBuffer, 16);
BitConverter.GetBytes(dwPitchOrLinearSize).CopyTo(imageBuffer, 20);
BitConverter.GetBytes(dwMipMapCount).CopyTo(imageBuffer, 28);
BitConverter.GetBytes(dwSize).CopyTo(imageBuffer, 76);
BitConverter.GetBytes(dwFlags2).CopyTo(imageBuffer, 80);
BitConverter.GetBytes(dwFourCC).CopyTo(imageBuffer, 84);
BitConverter.GetBytes(dwRGBBitCount).CopyTo(imageBuffer, 88);
BitConverter.GetBytes(dwRBitMask).CopyTo(imageBuffer, 92);
BitConverter.GetBytes(dwGBitMask).CopyTo(imageBuffer, 96);
BitConverter.GetBytes(dwBBitMask).CopyTo(imageBuffer, 100);
BitConverter.GetBytes(dwABitMask).CopyTo(imageBuffer, 104);
BitConverter.GetBytes(dwCaps).CopyTo(imageBuffer, 108);
BitConverter.GetBytes(dwCaps2).CopyTo(imageBuffer, 112);
image_data.CopyTo(imageBuffer, 128);
return imageBuffer;
}
private byte[] ConvertToPVR()
{
var mstream = new MemoryStream();
using (var writer = new BinaryWriter(mstream))
{
writer.Write(pvrVersion);
writer.Write(pvrFlags);
writer.Write(pvrPixelFormat);
writer.Write(pvrColourSpace);
writer.Write(pvrChannelType);
writer.Write(m_Height);
writer.Write(m_Width);
writer.Write(pvrDepth);
writer.Write(pvrNumSurfaces);
writer.Write(pvrNumFaces);
writer.Write(dwMipMapCount);
writer.Write(pvrMetaDataSize);
writer.Write(image_data);
return mstream.ToArray();
}
}
private byte[] ConvertToKTX()
{
var mstream = new MemoryStream();
using (var writer = new BinaryWriter(mstream))
{
writer.Write(KTXHeader.IDENTIFIER);
writer.Write(KTXHeader.ENDIANESS_LE);
writer.Write(glType);
writer.Write(glTypeSize);
writer.Write(glFormat);
writer.Write(glInternalFormat);
writer.Write(glBaseInternalFormat);
writer.Write(m_Width);
writer.Write(m_Height);
writer.Write(pixelDepth);
writer.Write(numberOfArrayElements);
writer.Write(numberOfFaces);
writer.Write(numberOfMipmapLevels);
writer.Write(bytesOfKeyValueData);
writer.Write(image_data_size);
writer.Write(image_data);
return mstream.ToArray();
}
}
public Bitmap ConvertToBitmap(bool flip)
{
if (image_data == null || image_data.Length == 0)
return null;
Bitmap bitmap;
switch (m_TextureFormat)
{
case TextureFormat.Alpha8:
case TextureFormat.ARGB4444:
case TextureFormat.RGB24:
case TextureFormat.RGBA32:
case TextureFormat.ARGB32:
case TextureFormat.R16:
case TextureFormat.RGBA4444:
case TextureFormat.BGRA32:
case TextureFormat.RG16:
case TextureFormat.R8:
bitmap = BGRA32ToBitmap();
break;
case TextureFormat.RGB565:
bitmap = RGB565ToBitmap();
break;
case TextureFormat.YUY2:
case TextureFormat.PVRTC_RGB2:
case TextureFormat.PVRTC_RGBA2:
case TextureFormat.PVRTC_RGB4:
case TextureFormat.PVRTC_RGBA4:
case TextureFormat.ETC_RGB4:
case TextureFormat.ETC2_RGB:
case TextureFormat.ETC2_RGBA1:
case TextureFormat.ETC2_RGBA8:
case TextureFormat.ASTC_RGB_4x4:
case TextureFormat.ASTC_RGB_5x5:
case TextureFormat.ASTC_RGB_6x6:
case TextureFormat.ASTC_RGB_8x8:
case TextureFormat.ASTC_RGB_10x10:
case TextureFormat.ASTC_RGB_12x12:
case TextureFormat.ASTC_RGBA_4x4:
case TextureFormat.ASTC_RGBA_5x5:
case TextureFormat.ASTC_RGBA_6x6:
case TextureFormat.ASTC_RGBA_8x8:
case TextureFormat.ASTC_RGBA_10x10:
case TextureFormat.ASTC_RGBA_12x12:
case TextureFormat.ETC_RGB4_3DS:
case TextureFormat.ETC_RGBA8_3DS:
bitmap = PVRToBitmap(ConvertToPVR());
break;
case TextureFormat.DXT1:
case TextureFormat.DXT5:
case TextureFormat.RHalf:
case TextureFormat.RGHalf:
case TextureFormat.RGBAHalf:
case TextureFormat.RFloat:
case TextureFormat.RGFloat:
case TextureFormat.RGBAFloat:
case TextureFormat.RGB9e5Float:
case TextureFormat.ATC_RGB4:
case TextureFormat.ATC_RGBA8:
case TextureFormat.EAC_R:
case TextureFormat.EAC_R_SIGNED:
case TextureFormat.EAC_RG:
case TextureFormat.EAC_RG_SIGNED:
bitmap = TextureConverter();
break;
case TextureFormat.BC4:
case TextureFormat.BC5:
case TextureFormat.BC6H:
case TextureFormat.BC7:
bitmap = Texgenpack();
break;
case TextureFormat.DXT1Crunched:
case TextureFormat.DXT5Crunched:
DecompressCRN();
bitmap = TextureConverter();
break;
case TextureFormat.ETC_RGB4Crunched:
case TextureFormat.ETC2_RGBA8Crunched:
DecompressCRN();
bitmap = PVRToBitmap(ConvertToPVR());
break;
default:
return null;
}
if (bitmap != null && flip)
bitmap.RotateFlip(RotateFlipType.RotateNoneFlipY);
return bitmap;
}
private Bitmap BGRA32ToBitmap()
{
var hObject = GCHandle.Alloc(image_data, GCHandleType.Pinned);
var pObject = hObject.AddrOfPinnedObject();
var bitmap = new Bitmap(m_Width, m_Height, m_Width * 4, PixelFormat.Format32bppArgb, pObject);
hObject.Free();
return bitmap;
}
private Bitmap RGB565ToBitmap()
{
//stride = m_Width * 2 + m_Width * 2 % 4
//所以m_Width * 2不为4的倍数时，需要在每行补上相应的像素
byte[] buff;
var padding = m_Width * 2 % 4;
var stride = m_Width * 2 + padding;
if (padding != 0)
{
buff = new byte[stride * m_Height];
for (int i = 0; i < m_Height; i++)
{
Buffer.BlockCopy(image_data, i * m_Width * 2, buff, i * stride, m_Width * 2);
}
}
else
{
buff = image_data;
}
var hObject = GCHandle.Alloc(buff, GCHandleType.Pinned);
var pObject = hObject.AddrOfPinnedObject();
var bitmap = new Bitmap(m_Width, m_Height, stride, PixelFormat.Format16bppRgb565, pObject);
hObject.Free();
return bitmap;
}
private Bitmap PVRToBitmap(byte[] pvrdata)
{
var bitmap = new Bitmap(m_Width, m_Height);
var rect = new Rectangle(0, 0, m_Width, m_Height);
var bmd = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
var len = Math.Abs(bmd.Stride) * bmd.Height;
if (!DecompressPVR(pvrdata, bmd.Scan0, len))
{
bitmap.UnlockBits(bmd);
bitmap.Dispose();
return null;
}
bitmap.UnlockBits(bmd);
return bitmap;
}
private Bitmap TextureConverter()
{
var bitmap = new Bitmap(m_Width, m_Height);
var rect = new Rectangle(0, 0, m_Width, m_Height);
var bmd = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
var len = Math.Abs(bmd.Stride) * bmd.Height;
var fixAlpha = glBaseInternalFormat == KTXHeader.GL_RED || glBaseInternalFormat == KTXHeader.GL_RG;
if (!Ponvert(image_data, bmd.Scan0, m_Width, m_Height, image_data_size, (int)q_format, len, fixAlpha))
{
bitmap.UnlockBits(bmd);
bitmap.Dispose();
return null;
}
bitmap.UnlockBits(bmd);
return bitmap;
}
private void DecompressCRN()
{
IntPtr uncompressedData;
int uncompressedSize;
bool result;
if (version[0] > 2017 || (version[0] == 2017 && version[1] >= 3) //2017.3 and up
|| m_TextureFormat == TextureFormat.ETC_RGB4Crunched
|| m_TextureFormat == TextureFormat.ETC2_RGBA8Crunched)
{
result = DecompressUnityCRN(image_data, image_data_size, out uncompressedData, out uncompressedSize);
}
else
{
result = DecompressCRN(image_data, image_data_size, out uncompressedData, out uncompressedSize);
}
if (result)
{
var uncompressedBytes = new byte[uncompressedSize];
Marshal.Copy(uncompressedData, uncompressedBytes, 0, uncompressedSize);
Marshal.FreeHGlobal(uncompressedData);
image_data = uncompressedBytes;
image_data_size = uncompressedSize;
}
}
private Bitmap Texgenpack()
{
var bitmap = new Bitmap(m_Width, m_Height);
var rect = new Rectangle(0, 0, m_Width, m_Height);
var bmd = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
Decode((int)texturetype, image_data, m_Width, m_Height, bmd.Scan0);
bitmap.UnlockBits(bmd);
return bitmap;
}
}
public static class KTXHeader
{
public static byte[] IDENTIFIER = { 0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A };
public static byte[] ENDIANESS_LE = { 1, 2, 3, 4 };
// constants for glInternalFormat
public static int GL_ETC1_RGB8_OES = 0x8D64;
public static int GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00;
public static int GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG = 0x8C01;
public static int GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02;
public static int GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG = 0x8C03;
public static int GL_ATC_RGB_AMD = 0x8C92;
public static int GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD = 0x87EE;
public static int GL_COMPRESSED_RGB8_ETC2 = 0x9274;
public static int GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 = 0x9276;
public static int GL_COMPRESSED_RGBA8_ETC2_EAC = 0x9278;
public static int GL_COMPRESSED_R11_EAC = 0x9270;
public static int GL_COMPRESSED_SIGNED_R11_EAC = 0x9271;
public static int GL_COMPRESSED_RG11_EAC = 0x9272;
public static int GL_COMPRESSED_SIGNED_RG11_EAC = 0x9273;
public static int GL_COMPRESSED_RED_RGTC1 = 0x8DBB;
public static int GL_COMPRESSED_RG_RGTC2 = 0x8DBD;
public static int GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT = 0x8E8F;
public static int GL_COMPRESSED_RGBA_BPTC_UNORM = 0x8E8C;
public static int GL_R16F = 0x822D;
public static int GL_RG16F = 0x822F;
public static int GL_RGBA16F = 0x881A;
public static int GL_R32F = 0x822E;
public static int GL_RG32F = 0x8230;
public static int GL_RGBA32F = 0x8814;
// constants for glBaseInternalFormat
public static int GL_RED = 0x1903;
public static int GL_RGB = 0x1907;
public static int GL_RGBA = 0x1908;
public static int GL_RG = 0x8227;
}
//from TextureConverter.h
public enum QFORMAT
{
// General formats
Q_FORMAT_RGBA_8UI = 1,
Q_FORMAT_RGBA_8I,
Q_FORMAT_RGB5_A1UI,
Q_FORMAT_RGBA_4444,
Q_FORMAT_RGBA_16UI,
Q_FORMAT_RGBA_16I,
Q_FORMAT_RGBA_32UI,
Q_FORMAT_RGBA_32I,
Q_FORMAT_PALETTE_8_RGBA_8888,
Q_FORMAT_PALETTE_8_RGBA_5551,
Q_FORMAT_PALETTE_8_RGBA_4444,
Q_FORMAT_PALETTE_4_RGBA_8888,
Q_FORMAT_PALETTE_4_RGBA_5551,
Q_FORMAT_PALETTE_4_RGBA_4444,
Q_FORMAT_PALETTE_1_RGBA_8888,
Q_FORMAT_PALETTE_8_RGB_888,
Q_FORMAT_PALETTE_8_RGB_565,
Q_FORMAT_PALETTE_4_RGB_888,
Q_FORMAT_PALETTE_4_RGB_565,
Q_FORMAT_R2_GBA10UI,
Q_FORMAT_RGB10_A2UI,
Q_FORMAT_RGB10_A2I,
Q_FORMAT_RGBA_F,
Q_FORMAT_RGBA_HF,
Q_FORMAT_RGB9_E5, // Last five bits are exponent bits (Read following section in GLES3 spec: "3.8.17 Shared Exponent Texture Color Conversion")
Q_FORMAT_RGB_8UI,
Q_FORMAT_RGB_8I,
Q_FORMAT_RGB_565,
Q_FORMAT_RGB_16UI,
Q_FORMAT_RGB_16I,
Q_FORMAT_RGB_32UI,
Q_FORMAT_RGB_32I,
Q_FORMAT_RGB_F,
Q_FORMAT_RGB_HF,
Q_FORMAT_RGB_11_11_10_F,
Q_FORMAT_RG_F,
Q_FORMAT_RG_HF,
Q_FORMAT_RG_32UI,
Q_FORMAT_RG_32I,
Q_FORMAT_RG_16I,
Q_FORMAT_RG_16UI,
Q_FORMAT_RG_8I,
Q_FORMAT_RG_8UI,
Q_FORMAT_RG_S88,
Q_FORMAT_R_32UI,
Q_FORMAT_R_32I,
Q_FORMAT_R_F,
Q_FORMAT_R_16F,
Q_FORMAT_R_16I,
Q_FORMAT_R_16UI,
Q_FORMAT_R_8I,
Q_FORMAT_R_8UI,
Q_FORMAT_LUMINANCE_ALPHA_88,
Q_FORMAT_LUMINANCE_8,
Q_FORMAT_ALPHA_8,
Q_FORMAT_LUMINANCE_ALPHA_F,
Q_FORMAT_LUMINANCE_F,
Q_FORMAT_ALPHA_F,
Q_FORMAT_LUMINANCE_ALPHA_HF,
Q_FORMAT_LUMINANCE_HF,
Q_FORMAT_ALPHA_HF,
Q_FORMAT_DEPTH_16,
Q_FORMAT_DEPTH_24,
Q_FORMAT_DEPTH_24_STENCIL_8,
Q_FORMAT_DEPTH_32,
Q_FORMAT_BGR_565,
Q_FORMAT_BGRA_8888,
Q_FORMAT_BGRA_5551,
Q_FORMAT_BGRX_8888,
Q_FORMAT_BGRA_4444,
// Compressed formats
Q_FORMAT_ATITC_RGBA,
Q_FORMAT_ATC_RGBA_EXPLICIT_ALPHA = Q_FORMAT_ATITC_RGBA,
Q_FORMAT_ATITC_RGB,
Q_FORMAT_ATC_RGB = Q_FORMAT_ATITC_RGB,
Q_FORMAT_ATC_RGBA_INTERPOLATED_ALPHA,
Q_FORMAT_ETC1_RGB8,
Q_FORMAT_3DC_X,
Q_FORMAT_3DC_XY,
Q_FORMAT_ETC2_RGB8,
Q_FORMAT_ETC2_RGBA8,
Q_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1,
Q_FORMAT_ETC2_SRGB8,
Q_FORMAT_ETC2_SRGB8_ALPHA8,
Q_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1,
Q_FORMAT_EAC_R_SIGNED,
Q_FORMAT_EAC_R_UNSIGNED,
Q_FORMAT_EAC_RG_SIGNED,
Q_FORMAT_EAC_RG_UNSIGNED,
Q_FORMAT_S3TC_DXT1_RGB,
Q_FORMAT_S3TC_DXT1_RGBA,
Q_FORMAT_S3TC_DXT3_RGBA,
Q_FORMAT_S3TC_DXT5_RGBA,
// YUV formats
Q_FORMAT_AYUV_32,
Q_FORMAT_I444_24,
Q_FORMAT_YUYV_16,
Q_FORMAT_UYVY_16,
Q_FORMAT_I420_12,
Q_FORMAT_YV12_12,
Q_FORMAT_NV21_12,
Q_FORMAT_NV12_12,
// ASTC Format
Q_FORMAT_ASTC_8,
Q_FORMAT_ASTC_16,
};
public enum texgenpack_texturetype
{
RGTC1,
RGTC2,
BPTC_FLOAT,
BPTC
}
}