PVRTexLib.NET 1.0.1

PVRTexLib.NET

Introduction

PVRTexLib.NET is a wrapper for PVRTexLib supporting .NET Standard 2.0 and upper. It contains all the API from PVRTexLib.
The documents can be found through installing PVRTexTool.
PVRTexLib.NET is licensed under the MIT license.

Quick Start

Create PVRTexture instance to handle your textures.

using PVRTexLib;

class TextureTranscoder
{
    static void Main(string[] args)
    {
        EncodeTexture("D:\\in.png", "D:\\out.bin", (ulong)PVRTexLibPixelFormat.PVRTLPF_PVRTCII_HDR_8bpp);
        DecodeTexture("D:\\out.bin", "D:\\in2.png");
    }
    
    public static unsafe void EncodeTexture(string inFile, string outFile, ulong outFormat)
    {
        using (Bitmap bitmap = new Bitmap(Image.FromFile(inFile)))
        {
            BitmapData data = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
            using (PVRTextureHeader header = new PVRTextureHeader(PVRDefine.PVRTGENPIXELID4('b', 'g', 'r', 'a', 8, 8, 8, 8), (uint)bitmap.Width, (uint)bitmap.Height, 1, 1, 1, 1, PVRTexLibColourSpace.PVRTLCS_sRGB, PVRTexLibVariableType.PVRTLVT_UnsignedByteNorm, false))
            {
                using (PVRTexture tex = new PVRTexture(header, (void*)data.Scan0))
                {
                    if (tex.GetTextureDataSize() != 0)
                    {
                        if (tex.Transcode(outFormat, PVRTexLibVariableType.PVRTLVT_UnsignedByteNorm, PVRTexLibColourSpace.PVRTLCS_sRGB, 0, false))
                        {
                            using (Stream outStream = File.Create(outFile))
                            {
                                using (BinaryWriter bw = new BinaryWriter(outStream))
                                {
                                    bw.Write(bitmap.Width);
                                    bw.Write(bitmap.Height);
                                    bw.Write(outFormat);
                                    bw.Write(new ReadOnlySpan<byte>(tex.GetTextureDataPointer(0), (int)tex.GetTextureDataSize(0)));
                                }
                            }
                        }
                    }
                }
            }
            bitmap.UnlockBits(data);
        }
    }

    public static unsafe void DecodeTexture(string inFile, string outFile)
    {
        ulong size = 0ul;
        byte[] rawTexDataArray;
        int width, height;
        ulong inFormat;
        using (Stream inStream = File.OpenRead(inFile))
        {
            using (BinaryReader br = new BinaryReader(inStream))
            {
                width = br.ReadInt32();
                height = br.ReadInt32();
                inFormat = br.ReadUInt64();
                size = (ulong)(inStream.Length - 16);
                rawTexDataArray = new byte[size];
                br.Read(rawTexDataArray);
            }
        }
        using (Bitmap bitmap = new Bitmap(width, height))
        {
            BitmapData data = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
            using (PVRTextureHeader header = new PVRTextureHeader(inFormat, (uint)width, (uint)height, 1, 1, 1, 1, PVRTexLibColourSpace.PVRTLCS_sRGB, PVRTexLibVariableType.PVRTLVT_UnsignedByteNorm, false))
            {
                fixed (byte* rawTexDataPtr = &rawTexDataArray[0])
                {
                    using (PVRTexture tex = new PVRTexture(header, rawTexDataPtr))
                    {
                        if (tex.GetTextureDataSize() != 0)
                        {
                            if (tex.Transcode(PVRDefine.PVRTGENPIXELID4('b', 'g', 'r', 'a', 8, 8, 8, 8), PVRTexLibVariableType.PVRTLVT_UnsignedByteNorm, PVRTexLibColourSpace.PVRTLCS_sRGB, 0, false))
                            {
                                NativeMemory.Copy(tex.GetTextureDataPointer(0), (void*)data.Scan0, (nuint)tex.GetTextureDataSize(0));
                            }
                        }
                    }
                }
            }
            bitmap.UnlockBits(data);
            bitmap.Save(outFile);
        }
    }
}