Exemplo n.º 1
0
        public static byte[] DecodeBC3(NsGpuTexture Tex, int Offset)
        {
            int W = (Tex.Width + 3) / 4;
            int H = (Tex.Height + 3) / 4;

            byte[] Output = new byte[W * H * 64];

            SwizzleAddr Swizzle = new SwizzleAddr(W, H, 4);

            for (int Y = 0; Y < H; Y++)
            {
                for (int X = 0; X < W; X++)
                {
                    int IOffs = Offset + Swizzle.GetSwizzledAddress128(X, Y) * 16;

                    byte[] Tile = BCnDecodeTile(Tex.Data, IOffs + 8, false);

                    byte[] Alpha = new byte[8];

                    Alpha[0] = Tex.Data[IOffs + 0];
                    Alpha[1] = Tex.Data[IOffs + 1];

                    CalculateBC3Alpha(Alpha);

                    int AlphaLow  = Get32(Tex.Data, IOffs + 2);
                    int AlphaHigh = Get16(Tex.Data, IOffs + 6);

                    ulong AlphaCh = (uint)AlphaLow | (ulong)AlphaHigh << 32;

                    int TOffset = 0;

                    for (int TY = 0; TY < 4; TY++)
                    {
                        for (int TX = 0; TX < 4; TX++)
                        {
                            int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;

                            byte AlphaPx = Alpha[(AlphaCh >> (TY * 12 + TX * 3)) & 7];

                            Output[OOffset + 0] = Tile[TOffset + 0];
                            Output[OOffset + 1] = Tile[TOffset + 1];
                            Output[OOffset + 2] = Tile[TOffset + 2];
                            Output[OOffset + 3] = AlphaPx;

                            TOffset += 4;
                        }
                    }
                }
            }

            return(Output);
        }
Exemplo n.º 2
0
        public static byte[] DecodeBC4(NsGpuTexture Tex, int Offset)
        {
            int W = (Tex.Width + 3) / 4;
            int H = (Tex.Height + 3) / 4;

            byte[] Output = new byte[W * H * 64];

            SwizzleAddr Swizzle = new SwizzleAddr(W, H, 8);

            for (int Y = 0; Y < H; Y++)
            {
                for (int X = 0; X < W; X++)
                {
                    int IOffs = Swizzle.GetSwizzledAddress64(X, Y) * 8;

                    byte[] Red = new byte[8];

                    Red[0] = Tex.Data[IOffs + 0];
                    Red[1] = Tex.Data[IOffs + 1];

                    CalculateBC3Alpha(Red);

                    int RedLow  = Get32(Tex.Data, IOffs + 2);
                    int RedHigh = Get16(Tex.Data, IOffs + 6);

                    ulong RedCh = (uint)RedLow | (ulong)RedHigh << 32;

                    int TOffset = 0;

                    for (int TY = 0; TY < 4; TY++)
                    {
                        for (int TX = 0; TX < 4; TX++)
                        {
                            int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;

                            byte RedPx = Red[(RedCh >> (TY * 12 + TX * 3)) & 7];

                            Output[OOffset + 0] = RedPx;
                            Output[OOffset + 1] = RedPx;
                            Output[OOffset + 2] = RedPx;
                            Output[OOffset + 3] = 0xff;

                            TOffset += 4;
                        }
                    }
                }
            }

            return(Output);
        }
Exemplo n.º 3
0
        public static byte[] DecodeBC2(NsGpuTexture Tex, int Offset)
        {
            int W = (Tex.Width + 3) / 4;
            int H = (Tex.Height + 3) / 4;

            byte[] Output = new byte[W * H * 64];

            SwizzleAddr Swizzle = new SwizzleAddr(W, H, 4);

            for (int Y = 0; Y < H; Y++)
            {
                for (int X = 0; X < W; X++)
                {
                    int IOffs = Offset + Swizzle.GetSwizzledAddress128(X, Y) * 16;

                    byte[] Tile = BCnDecodeTile(Tex.Data, IOffs + 8, false);

                    int AlphaLow  = Get32(Tex.Data, IOffs + 0);
                    int AlphaHigh = Get32(Tex.Data, IOffs + 4);

                    ulong AlphaCh = (uint)AlphaLow | (ulong)AlphaHigh << 32;

                    int TOffset = 0;

                    for (int TY = 0; TY < 4; TY++)
                    {
                        for (int TX = 0; TX < 4; TX++)
                        {
                            ulong Alpha = (AlphaCh >> (TY * 16 + TX * 4)) & 0xf;

                            int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;

                            Output[OOffset + 0] = Tile[TOffset + 0];
                            Output[OOffset + 1] = Tile[TOffset + 1];
                            Output[OOffset + 2] = Tile[TOffset + 2];
                            Output[OOffset + 3] = (byte)(Alpha | (Alpha << 4));

                            TOffset += 4;
                        }
                    }
                }
            }

            return(Output);
        }
Exemplo n.º 4
0
        public static byte[] DecodeBC1(NsGpuTexture Tex, int Offset)
        {
            int W = (Tex.Width + 3) / 4;
            int H = (Tex.Height + 3) / 4;

            byte[] Output = new byte[W * H * 64];

            SwizzleAddr Swizzle = new SwizzleAddr(W, H, 8);

            for (int Y = 0; Y < H; Y++)
            {
                for (int X = 0; X < W; X++)
                {
                    int IOffs = Offset + Swizzle.GetSwizzledAddress64(X, Y) * 8;

                    byte[] Tile = BCnDecodeTile(Tex.Data, IOffs, true);

                    int TOffset = 0;

                    for (int TY = 0; TY < 4; TY++)
                    {
                        for (int TX = 0; TX < 4; TX++)
                        {
                            int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;

                            Output[OOffset + 0] = Tile[TOffset + 0];
                            Output[OOffset + 1] = Tile[TOffset + 1];
                            Output[OOffset + 2] = Tile[TOffset + 2];
                            Output[OOffset + 3] = Tile[TOffset + 3];

                            TOffset += 4;
                        }
                    }
                }
            }

            return(Output);
        }
Exemplo n.º 5
0
        public static byte[] DecodeBC5(NsGpuTexture Tex, int Offset, bool SNorm)
        {
            int W = (Tex.Width + 3) / 4;
            int H = (Tex.Height + 3) / 4;

            byte[] Output = new byte[W * H * 64];

            SwizzleAddr Swizzle = new SwizzleAddr(W, H, 4);

            for (int Y = 0; Y < H; Y++)
            {
                for (int X = 0; X < W; X++)
                {
                    int IOffs = Swizzle.GetSwizzledAddress128(X, Y) * 16;

                    byte[] Red   = new byte[8];
                    byte[] Green = new byte[8];

                    Red[0] = Tex.Data[IOffs + 0];
                    Red[1] = Tex.Data[IOffs + 1];

                    Green[0] = Tex.Data[IOffs + 8];
                    Green[1] = Tex.Data[IOffs + 9];

                    if (SNorm)
                    {
                        CalculateBC3AlphaS(Red);
                        CalculateBC3AlphaS(Green);
                    }
                    else
                    {
                        CalculateBC3Alpha(Red);
                        CalculateBC3Alpha(Green);
                    }

                    int RedLow  = Get32(Tex.Data, IOffs + 2);
                    int RedHigh = Get16(Tex.Data, IOffs + 6);

                    int GreenLow  = Get32(Tex.Data, IOffs + 10);
                    int GreenHigh = Get16(Tex.Data, IOffs + 14);

                    ulong RedCh   = (uint)RedLow | (ulong)RedHigh << 32;
                    ulong GreenCh = (uint)GreenLow | (ulong)GreenHigh << 32;

                    int TOffset = 0;

                    if (SNorm)
                    {
                        for (int TY = 0; TY < 4; TY++)
                        {
                            for (int TX = 0; TX < 4; TX++)
                            {
                                int Shift = TY * 12 + TX * 3;

                                int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;

                                byte RedPx   = Red  [(RedCh >> Shift) & 7];
                                byte GreenPx = Green[(GreenCh >> Shift) & 7];

                                RedPx   += 0x80;
                                GreenPx += 0x80;

                                float NX = (RedPx / 255f) * 2 - 1;
                                float NY = (GreenPx / 255f) * 2 - 1;

                                float NZ = (float)Math.Sqrt(1 - (NX * NX + NY * NY));

                                Output[OOffset + 0] = Clamp((NZ + 1) * 0.5f);
                                Output[OOffset + 1] = Clamp((NY + 1) * 0.5f);
                                Output[OOffset + 2] = Clamp((NX + 1) * 0.5f);
                                Output[OOffset + 3] = 0xff;

                                TOffset += 4;
                            }
                        }
                    }
                    else
                    {
                        for (int TY = 0; TY < 4; TY++)
                        {
                            for (int TX = 0; TX < 4; TX++)
                            {
                                int Shift = TY * 12 + TX * 3;

                                int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;

                                byte RedPx   = Red  [(RedCh >> Shift) & 7];
                                byte GreenPx = Green[(GreenCh >> Shift) & 7];

                                Output[OOffset + 0] = RedPx;
                                Output[OOffset + 1] = RedPx;
                                Output[OOffset + 2] = RedPx;
                                Output[OOffset + 3] = GreenPx;

                                TOffset += 4;
                            }
                        }
                    }
                }
            }

            return(Output);
        }