Пример #1
0
        public static SKImage DecodeImage(byte[] sequence, int width, int height, int depth, EPixelFormat format)
        {
            byte[]      data;
            SKColorType colorType;

            switch (format)
            {
            case EPixelFormat.PF_DXT5:
                data      = DXTDecoder.DecodeDXT5(sequence, width, height, depth);
                colorType = SKColorType.Rgba8888;
                break;

            case EPixelFormat.PF_DXT1:
                data      = DXTDecoder.DecodeDXT1(sequence, width, height, depth);
                colorType = SKColorType.Rgba8888;
                break;

            case EPixelFormat.PF_B8G8R8A8:
                data      = sequence;
                colorType = SKColorType.Bgra8888;
                break;

            case EPixelFormat.PF_BC5:
                data      = BCDecoder.DecodeBC5(sequence, width, height);
                colorType = SKColorType.Bgra8888;
                break;

            case EPixelFormat.PF_BC4:
                data      = BCDecoder.DecodeBC4(sequence, width, height);
                colorType = SKColorType.Bgra8888;
                break;

            case EPixelFormat.PF_G8:
                data      = sequence;
                colorType = SKColorType.Gray8;
                break;

            case EPixelFormat.PF_FloatRGBA:
                data      = sequence;
                colorType = SKColorType.RgbaF16;
                break;

            default:
                throw new NotImplementedException($"Cannot decode {format} format");
            }

            using (var bitmap = new SKBitmap(new SKImageInfo(width, height, colorType, SKAlphaType.Unpremul)))
            {
                unsafe
                {
                    fixed(byte *p = data)
                    {
                        bitmap.SetPixels(new IntPtr(p));
                    }
                }
                return(SKImage.FromBitmap(bitmap));
            }
        }
Пример #2
0
        public static SKImage DecodeImage(byte[] sequence, int width, int height, int depth, EPixelFormat format)
        {
            byte[]      data;
            SKColorType colorType;

            switch (format)
            {
            case EPixelFormat.PF_DXT5:
                data      = DXTDecoder.DecodeDXT5(sequence, width, height, depth);
                colorType = SKColorType.Rgba8888;
                break;

            case EPixelFormat.PF_DXT1:
                data      = DXTDecoder.DecodeDXT1(sequence, width, height, depth);
                colorType = SKColorType.Rgba8888;
                break;

            case EPixelFormat.PF_ASTC_8x8:
                var x = (int)TextureFormatHelper.GetBlockWidth(format);
                var y = (int)TextureFormatHelper.GetBlockHeight(format);
                var z = (int)TextureFormatHelper.GetBlockDepth(format);
                data      = ASTCDecoder.DecodeToRGBA8888(sequence, x, y, z, width, height, 1);
                colorType = SKColorType.Rgba8888;
                break;

            case EPixelFormat.PF_B8G8R8A8:
                data      = sequence;
                colorType = SKColorType.Bgra8888;
                break;

            case EPixelFormat.PF_BC5:
                data      = BCDecoder.DecodeBC5(sequence, width, height);
                colorType = SKColorType.Rgb888x;
                break;

            case EPixelFormat.PF_BC4:
                data      = BCDecoder.DecodeBC4(sequence, width, height);
                colorType = SKColorType.Rgb888x;
                break;

            case EPixelFormat.PF_G8:
                data      = sequence;
                colorType = SKColorType.Gray8;
                break;

            case EPixelFormat.PF_FloatRGBA:
                data      = sequence;
                colorType = SKColorType.RgbaF16;
                break;

            case EPixelFormat.PF_BC7:
                data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: false,
                                               inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_BPTC,
                                               outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBA8);
                colorType = SKColorType.Rgb888x;
                break;

            case EPixelFormat.PF_BC6H:
                data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: true,
                                               inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_BPTC_FLOAT,
                                               outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBX8); // Not sure whether that works, would actually be DETEX_PIXEL_FORMAT_FLOAT_RGBX32
                data      = Detex.DecodeBC6H(sequence, width, height);
                colorType = SKColorType.Rgb888x;
                break;

            case EPixelFormat.PF_ETC1:
                data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: false,
                                               inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_ETC1,
                                               outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBA8);
                colorType = SKColorType.Rgba8888;
                break;

            case EPixelFormat.PF_ETC2_RGB:
                data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: false,
                                               inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_ETC2,
                                               outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBA8);
                colorType = SKColorType.Rgba8888;
                break;

            case EPixelFormat.PF_ETC2_RGBA:
                data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: false,
                                               inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_ETC2_EAC,
                                               outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBA8);
                colorType = SKColorType.Rgba8888;
                break;

            default:
                throw new NotImplementedException($"Cannot decode {format} format");
            }

            using var bitmap = new SKBitmap(new SKImageInfo(width, height, colorType, SKAlphaType.Unpremul));
            unsafe
            {
                fixed(byte *p = data)
                {
                    bitmap.SetPixels(new IntPtr(p));
                }
            }
            return(SKImage.FromBitmap(bitmap));
        }