public Read ( |
||
reader | ||
Результат | void |
public void Load(Stream input) { BinaryReader reader = new BinaryReader(input); // // Read the DDS tag. If it's not right, then bail.. // uint signature = reader.ReadUInt32(); if (signature != HeaderValues.DdsSignature) { throw new FormatException("File does not appear to be a DDS image"); } header = new DdsHeader(); // // Read everything in.. for now assume it worked like a charm.. // header.Read(reader); if ((header.PixelFormat.Flags & (int)PixelFormatFlags.FourCC) != 0) { SquishFlags squishFlags; switch (header.PixelFormat.FourCC) { case FourCCFormat.Dxt1: { squishFlags = SquishFlags.Dxt1; break; } case FourCCFormat.Dxt3: { squishFlags = SquishFlags.Dxt3; break; } case FourCCFormat.Dxt5: { squishFlags = SquishFlags.Dxt5; break; } default: { throw new FormatException("File is not a supported DDS format"); } } // // Compute size of compressed block area // int blockCount = (Width + 3) / 4 * ((Height + 3) / 4); int blockSize = (squishFlags & SquishFlags.Dxt1) != 0 ? 8 : 16; // // Allocate room for compressed blocks, and read data into it. // byte[] compressedBlocks = new byte[blockCount * blockSize]; input.Read(compressedBlocks, 0, compressedBlocks.GetLength(0)); // // Now decompress.. // largestMipMap = DdsSquish.DecompressImage(Width, Height, compressedBlocks, squishFlags, null); } else { // // We can only deal with the non-DXT formats we know about.. this is a bit of a mess.. // Sorry.. // FileFormat fileFormat = FileFormat.Unknown; if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGBA) && (header.PixelFormat.RgbBitCount == 32) && (header.PixelFormat.RBitMask == 0x00ff0000) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x000000ff) && (header.PixelFormat.ABitMask == 0xff000000)) { fileFormat = FileFormat.A8R8G8B8; } else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGB) && (header.PixelFormat.RgbBitCount == 32) && (header.PixelFormat.RBitMask == 0x00ff0000) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x000000ff) && (header.PixelFormat.ABitMask == 0x00000000)) { fileFormat = FileFormat.X8R8G8B8; } else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGBA) && (header.PixelFormat.RgbBitCount == 32) && (header.PixelFormat.RBitMask == 0x000000ff) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x00ff0000) && (header.PixelFormat.ABitMask == 0xff000000)) { fileFormat = FileFormat.A8B8G8R8; } else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGB) && (header.PixelFormat.RgbBitCount == 32) && (header.PixelFormat.RBitMask == 0x000000ff) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x00ff0000) && (header.PixelFormat.ABitMask == 0x00000000)) { fileFormat = FileFormat.X8B8G8R8; } else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGBA) && (header.PixelFormat.RgbBitCount == 16) && (header.PixelFormat.RBitMask == 0x00007c00) && (header.PixelFormat.GBitMask == 0x000003e0) && (header.PixelFormat.BBitMask == 0x0000001f) && (header.PixelFormat.ABitMask == 0x00008000)) { fileFormat = FileFormat.A1R5G5B5; } else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGBA) && (header.PixelFormat.RgbBitCount == 16) && (header.PixelFormat.RBitMask == 0x00000f00) && (header.PixelFormat.GBitMask == 0x000000f0) && (header.PixelFormat.BBitMask == 0x0000000f) && (header.PixelFormat.ABitMask == 0x0000f000)) { fileFormat = FileFormat.A4R4G4B4; } else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGB) && (header.PixelFormat.RgbBitCount == 24) && (header.PixelFormat.RBitMask == 0x00ff0000) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x000000ff) && (header.PixelFormat.ABitMask == 0x00000000)) { fileFormat = FileFormat.R8G8B8; } else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGB) && (header.PixelFormat.RgbBitCount == 16) && (header.PixelFormat.RBitMask == 0x0000f800) && (header.PixelFormat.GBitMask == 0x000007e0) && (header.PixelFormat.BBitMask == 0x0000001f) && (header.PixelFormat.ABitMask == 0x00000000)) { fileFormat = FileFormat.R5G6B5; } else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.Gray) && (header.PixelFormat.RgbBitCount == 8) && (header.PixelFormat.RBitMask == 0x000000ff) && (header.PixelFormat.GBitMask == 0x00000000) && (header.PixelFormat.BBitMask == 0x00000000) && (header.PixelFormat.ABitMask == 0x00000000)) { fileFormat = FileFormat.G8; } // // If fileFormat is still invalid, then it's an unsupported format. // if (fileFormat == FileFormat.Unknown) { throw new FormatException("File is not a supported DDS format"); } // // Size of a source pixel, in bytes // int srcPixelSize = ((int)header.PixelFormat.RgbBitCount / 8); // // We need the pitch for a row, so we can allocate enough memory for the load. // int rowPitch; if ((header.HeaderFlags & (int)HeaderFlags.Pitch) != 0) { // // Pitch specified.. so we can use directly // rowPitch = (int)header.PitchOrLinearSize; } else if ((header.HeaderFlags & (int)HeaderFlags.LinearSize) != 0) { // // Linear size specified.. compute row pitch. Of course, this should never happen // as linear size is *supposed* to be for compressed textures. But Microsoft don't // always play by the rules when it comes to DDS output. // rowPitch = (int)header.PitchOrLinearSize / (int)header.Height; } else { // // Another case of Microsoft not obeying their standard is the 'Convert to..' shell extension // that ships in the DirectX SDK. Seems to always leave flags empty..so no indication of pitch // or linear size. And - to cap it all off - they leave pitchOrLinearSize as *zero*. Zero??? If // we get this bizarre set of inputs, we just go 'screw it' and compute row pitch ourselves. // rowPitch = (int)header.Width * srcPixelSize; } // // Ok.. now, we need to allocate room for the bytes to read in from.. it's rowPitch bytes * height // byte[] readPixelData = new byte[rowPitch * header.Height]; input.Read(readPixelData, 0, readPixelData.GetLength(0)); // // We now need space for the real pixel data.. that's width * height * 4.. // largestMipMap = new byte[header.Width * header.Height * 4]; // // And now we have the arduous task of filling that up with stuff.. // for (int destY = 0; destY < (int)header.Height; destY++) { for (int destX = 0; destX < (int)header.Width; destX++) { // // Compute source pixel offset // int srcPixelOffset = destY * rowPitch + destX * srcPixelSize; // // Read our pixel // uint pixelColour = 0; uint pixelRed = 0; uint pixelGreen = 0; uint pixelBlue = 0; uint pixelAlpha = 0; // // Build our pixel colour as a DWORD // for (int loop = 0; loop < srcPixelSize; loop++) { pixelColour |= (uint)(readPixelData[srcPixelOffset + loop] << (8 * loop)); } switch (fileFormat) { case FileFormat.A8R8G8B8: { pixelAlpha = (pixelColour >> 24) & 0xff; pixelRed = (pixelColour >> 16) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 0) & 0xff; break; } case FileFormat.X8R8G8B8: { pixelAlpha = 0xff; pixelRed = (pixelColour >> 16) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 0) & 0xff; break; } case FileFormat.A8B8G8R8: { pixelAlpha = (pixelColour >> 24) & 0xff; pixelRed = (pixelColour >> 0) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 16) & 0xff; break; } case FileFormat.X8B8G8R8: { pixelAlpha = 0xff; pixelRed = (pixelColour >> 0) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 16) & 0xff; break; } case FileFormat.A1R5G5B5: { pixelAlpha = (pixelColour >> 15) & 0xff; pixelRed = (pixelColour >> 10) & 0x1f; pixelGreen = (pixelColour >> 5) & 0x1f; pixelBlue = (pixelColour >> 0) & 0x1f; pixelRed = (pixelRed << 3) | (pixelRed >> 2); pixelGreen = (pixelGreen << 3) | (pixelGreen >> 2); pixelBlue = (pixelBlue << 3) | (pixelBlue >> 2); break; } case FileFormat.A4R4G4B4: { pixelAlpha = (pixelColour >> 12) & 0xff; pixelRed = (pixelColour >> 8) & 0x0f; pixelGreen = (pixelColour >> 4) & 0x0f; pixelBlue = (pixelColour >> 0) & 0x0f; pixelAlpha = (pixelAlpha << 4) | (pixelAlpha >> 0); pixelRed = (pixelRed << 4) | (pixelRed >> 0); pixelGreen = (pixelGreen << 4) | (pixelGreen >> 0); pixelBlue = (pixelBlue << 4) | (pixelBlue >> 0); break; } case FileFormat.R8G8B8: { pixelAlpha = 0xff; pixelRed = (pixelColour >> 16) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 0) & 0xff; break; } case FileFormat.R5G6B5: { pixelAlpha = 0xff; pixelRed = (pixelColour >> 11) & 0x1f; pixelGreen = (pixelColour >> 5) & 0x3f; pixelBlue = (pixelColour >> 0) & 0x1f; pixelRed = (pixelRed << 3) | (pixelRed >> 2); pixelGreen = (pixelGreen << 2) | (pixelGreen >> 4); pixelBlue = (pixelBlue << 3) | (pixelBlue >> 2); break; } case FileFormat.G8: { pixelAlpha = 0xff; pixelRed = pixelGreen = pixelBlue = pixelColour & 0xff; break; } } // // Write the colours away.. // int destPixelOffset = destY * (int)header.Width * 4 + destX * 4; largestMipMap[destPixelOffset + 0] = (byte)pixelRed; largestMipMap[destPixelOffset + 1] = (byte)pixelGreen; largestMipMap[destPixelOffset + 2] = (byte)pixelBlue; largestMipMap[destPixelOffset + 3] = (byte)pixelAlpha; } } } MipMaps = new List <DdsMipMap> { new DdsMipMap(Width, Height, largestMipMap) }; }
public void Load(Stream input) { BinaryReader reader = new BinaryReader(input); // // Read the DDS tag. If it's not right, then bail.. // uint signature = reader.ReadUInt32(); if (signature != HeaderValues.DdsSignature) throw new FormatException("File does not appear to be a DDS image"); header = new DdsHeader(); // // Read everything in.. for now assume it worked like a charm.. // header.Read(reader); if ((header.PixelFormat.Flags & (int)PixelFormatFlags.FourCC) != 0) { SquishFlags squishFlags; switch(header.PixelFormat.FourCC) { case FourCCFormat.Dxt1: { squishFlags = SquishFlags.Dxt1; break; } case FourCCFormat.Dxt3: { squishFlags = SquishFlags.Dxt3; break; } case FourCCFormat.Dxt5: { squishFlags = SquishFlags.Dxt5; break; } default: { throw new FormatException("File is not a supported DDS format"); } } // // Compute size of compressed block area // int blockCount = (Width + 3) / 4 * ((Height + 3) / 4); int blockSize = (squishFlags & SquishFlags.Dxt1) != 0 ? 8 : 16; // // Allocate room for compressed blocks, and read data into it. // byte[] compressedBlocks = new byte[blockCount * blockSize]; input.Read(compressedBlocks, 0, compressedBlocks.GetLength(0)); // // Now decompress.. // largestMipMap = DdsSquish.DecompressImage(Width, Height, compressedBlocks, squishFlags, null); } else { // // We can only deal with the non-DXT formats we know about.. this is a bit of a mess.. // Sorry.. // FileFormat fileFormat = FileFormat.Unknown; if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGBA) && (header.PixelFormat.RgbBitCount == 32) && (header.PixelFormat.RBitMask == 0x00ff0000) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x000000ff) && (header.PixelFormat.ABitMask == 0xff000000)) fileFormat = FileFormat.A8R8G8B8; else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGB) && (header.PixelFormat.RgbBitCount == 32) && (header.PixelFormat.RBitMask == 0x00ff0000) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x000000ff) && (header.PixelFormat.ABitMask == 0x00000000)) fileFormat = FileFormat.X8R8G8B8; else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGBA) && (header.PixelFormat.RgbBitCount == 32) && (header.PixelFormat.RBitMask == 0x000000ff) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x00ff0000) && (header.PixelFormat.ABitMask == 0xff000000)) fileFormat = FileFormat.A8B8G8R8; else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGB) && (header.PixelFormat.RgbBitCount == 32) && (header.PixelFormat.RBitMask == 0x000000ff) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x00ff0000) && (header.PixelFormat.ABitMask == 0x00000000)) fileFormat = FileFormat.X8B8G8R8; else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGBA) && (header.PixelFormat.RgbBitCount == 16) && (header.PixelFormat.RBitMask == 0x00007c00) && (header.PixelFormat.GBitMask == 0x000003e0) && (header.PixelFormat.BBitMask == 0x0000001f) && (header.PixelFormat.ABitMask == 0x00008000)) fileFormat = FileFormat.A1R5G5B5; else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGBA) && (header.PixelFormat.RgbBitCount == 16) && (header.PixelFormat.RBitMask == 0x00000f00) && (header.PixelFormat.GBitMask == 0x000000f0) && (header.PixelFormat.BBitMask == 0x0000000f) && (header.PixelFormat.ABitMask == 0x0000f000)) fileFormat = FileFormat.A4R4G4B4; else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGB) && (header.PixelFormat.RgbBitCount == 24) && (header.PixelFormat.RBitMask == 0x00ff0000) && (header.PixelFormat.GBitMask == 0x0000ff00) && (header.PixelFormat.BBitMask == 0x000000ff) && (header.PixelFormat.ABitMask == 0x00000000)) fileFormat = FileFormat.R8G8B8; else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.RGB) && (header.PixelFormat.RgbBitCount == 16) && (header.PixelFormat.RBitMask == 0x0000f800) && (header.PixelFormat.GBitMask == 0x000007e0) && (header.PixelFormat.BBitMask == 0x0000001f) && (header.PixelFormat.ABitMask == 0x00000000)) fileFormat = FileFormat.R5G6B5; else if ((header.PixelFormat.Flags == (int)PixelFormatFlags.Gray) && (header.PixelFormat.RgbBitCount == 8) && (header.PixelFormat.RBitMask == 0x000000ff) && (header.PixelFormat.GBitMask == 0x00000000) && (header.PixelFormat.BBitMask == 0x00000000) && (header.PixelFormat.ABitMask == 0x00000000)) fileFormat = FileFormat.G8; // // If fileFormat is still invalid, then it's an unsupported format. // if (fileFormat == FileFormat.Unknown) throw new FormatException("File is not a supported DDS format"); // // Size of a source pixel, in bytes // int srcPixelSize = ((int)header.PixelFormat.RgbBitCount / 8); // // We need the pitch for a row, so we can allocate enough memory for the load. // int rowPitch; if ((header.HeaderFlags & (int)HeaderFlags.Pitch) != 0) { // // Pitch specified.. so we can use directly // rowPitch = (int)header.PitchOrLinearSize; } else if ((header.HeaderFlags & (int)HeaderFlags.LinearSize) != 0) { // // Linear size specified.. compute row pitch. Of course, this should never happen // as linear size is *supposed* to be for compressed textures. But Microsoft don't // always play by the rules when it comes to DDS output. // rowPitch = (int)header.PitchOrLinearSize / (int)header.Height; } else { // // Another case of Microsoft not obeying their standard is the 'Convert to..' shell extension // that ships in the DirectX SDK. Seems to always leave flags empty..so no indication of pitch // or linear size. And - to cap it all off - they leave pitchOrLinearSize as *zero*. Zero??? If // we get this bizarre set of inputs, we just go 'screw it' and compute row pitch ourselves. // rowPitch = (int)header.Width * srcPixelSize; } // // Ok.. now, we need to allocate room for the bytes to read in from.. it's rowPitch bytes * height // byte[] readPixelData = new byte[rowPitch * header.Height]; input.Read(readPixelData, 0, readPixelData.GetLength(0)); // // We now need space for the real pixel data.. that's width * height * 4.. // largestMipMap = new byte[header.Width * header.Height * 4]; // // And now we have the arduous task of filling that up with stuff.. // for(int destY = 0; destY < (int)header.Height; destY++) { for(int destX = 0; destX < (int)header.Width; destX++) { // // Compute source pixel offset // int srcPixelOffset = destY * rowPitch + destX * srcPixelSize; // // Read our pixel // uint pixelColour = 0; uint pixelRed = 0; uint pixelGreen = 0; uint pixelBlue = 0; uint pixelAlpha = 0; // // Build our pixel colour as a DWORD // for(int loop = 0; loop < srcPixelSize; loop++) pixelColour |= (uint)(readPixelData[srcPixelOffset + loop] << (8 * loop)); switch(fileFormat) { case FileFormat.A8R8G8B8: { pixelAlpha = (pixelColour >> 24) & 0xff; pixelRed = (pixelColour >> 16) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 0) & 0xff; break; } case FileFormat.X8R8G8B8: { pixelAlpha = 0xff; pixelRed = (pixelColour >> 16) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 0) & 0xff; break; } case FileFormat.A8B8G8R8: { pixelAlpha = (pixelColour >> 24) & 0xff; pixelRed = (pixelColour >> 0) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 16) & 0xff; break; } case FileFormat.X8B8G8R8: { pixelAlpha = 0xff; pixelRed = (pixelColour >> 0) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 16) & 0xff; break; } case FileFormat.A1R5G5B5: { pixelAlpha = (pixelColour >> 15) & 0xff; pixelRed = (pixelColour >> 10) & 0x1f; pixelGreen = (pixelColour >> 5) & 0x1f; pixelBlue = (pixelColour >> 0) & 0x1f; pixelRed = (pixelRed << 3) | (pixelRed >> 2); pixelGreen = (pixelGreen << 3) | (pixelGreen >> 2); pixelBlue = (pixelBlue << 3) | (pixelBlue >> 2); break; } case FileFormat.A4R4G4B4: { pixelAlpha = (pixelColour >> 12) & 0xff; pixelRed = (pixelColour >> 8) & 0x0f; pixelGreen = (pixelColour >> 4) & 0x0f; pixelBlue = (pixelColour >> 0) & 0x0f; pixelAlpha = (pixelAlpha << 4) | (pixelAlpha >> 0); pixelRed = (pixelRed << 4) | (pixelRed >> 0); pixelGreen = (pixelGreen << 4) | (pixelGreen >> 0); pixelBlue = (pixelBlue << 4) | (pixelBlue >> 0); break; } case FileFormat.R8G8B8: { pixelAlpha = 0xff; pixelRed = (pixelColour >> 16) & 0xff; pixelGreen = (pixelColour >> 8) & 0xff; pixelBlue = (pixelColour >> 0) & 0xff; break; } case FileFormat.R5G6B5: { pixelAlpha = 0xff; pixelRed = (pixelColour >> 11) & 0x1f; pixelGreen = (pixelColour >> 5) & 0x3f; pixelBlue = (pixelColour >> 0) & 0x1f; pixelRed = (pixelRed << 3) | (pixelRed >> 2); pixelGreen = (pixelGreen << 2) | (pixelGreen >> 4); pixelBlue = (pixelBlue << 3) | (pixelBlue >> 2); break; } case FileFormat.G8: { pixelAlpha = 0xff; pixelRed = pixelGreen = pixelBlue = pixelColour & 0xff; break; } } // // Write the colours away.. // int destPixelOffset = destY * (int)header.Width * 4 + destX * 4; largestMipMap[destPixelOffset + 0] = (byte)pixelRed; largestMipMap[destPixelOffset + 1] = (byte)pixelGreen; largestMipMap[destPixelOffset + 2] = (byte)pixelBlue; largestMipMap[destPixelOffset + 3] = (byte)pixelAlpha; } } } MipMaps = new List<DdsMipMap> { new DdsMipMap(Width, Height, largestMipMap) }; }