static void Main(string[] args) { HybRunner runner = HybRunner.Cuda().SetDistrib(32, 32, 16, 16, 1, 0); GrayBitmap image = GrayBitmap.Load("../../images/lena512.bmp"); uint height = image.Height, width = image.Width; ushort[] inputPixels = image.PixelsUShort; float[] imageFloat = new float[width * height]; float[] imageCompute = new float[width * height]; for (int i = 0; i < width * height; ++i) { imageFloat[i] = (float)inputPixels[i]; } dynamic wrapper = runner.Wrap(new Program()); wrapper.Sobel(imageFloat, imageCompute, (int)width, (int)height); ushort[] outputPixel = new ushort[width * height]; for (int i = 0; i < width * height; ++i) { outputPixel[i] = (ushort)imageCompute[i]; } GrayBitmap imageSobel = new GrayBitmap(width, height); imageSobel.PixelsUShort = outputPixel; imageSobel.Save("../../output-01-gpu/sobel.bmp"); }
public static GrayBitmap Load(string filename) { using (BinaryReader br = new BinaryReader(new FileStream(filename, FileMode.Open))) { byte[] header = br.ReadBytes(54); GCHandle gch = GCHandle.Alloc(header, GCHandleType.Pinned); // read headers FileHeader fh = (FileHeader)Marshal.PtrToStructure(Marshal.UnsafeAddrOfPinnedArrayElement(header, 0), typeof(FileHeader)); BitmapInfoHeader bih = (BitmapInfoHeader)Marshal.PtrToStructure(Marshal.UnsafeAddrOfPinnedArrayElement(header, 14), typeof(BitmapInfoHeader)); // read the palette br.ReadBytes((int)(bih.numberOfColorsInPalette * 4)); //Console.Out.WriteLine("Loading bitmap file width = {0} - height = {1}", bih.width, bih.height) ; GrayBitmap res = new GrayBitmap(bih.width, bih.height); // read data - note that bmp starts with bottom-left corner for (int y = 0; y < res.height; ++y) { br.Read(res.data, (int)res.width * ((int)res.height - 1 - y), (int)res.width); } return(res); } }
static void Main(string[] args) { HybRunner runner = HybRunner.Cuda().SetDistrib(32, 32, 16, 16, 1, 0); GrayBitmap image = GrayBitmap.Load("../../images/lena512.bmp"); uint height = image.Height, width = image.Width; ushort[] inputPixels = image.PixelsUShort; float[] imageFloat = new float[width * height]; float[] imageCompute = new float[width * height]; for (int i = 0; i < width * height; ++i) { imageFloat[i] = (float)inputPixels[i]; } IntPtr src = runner.Marshaller.MarshalManagedToNative(imageFloat); //bind texture cudaChannelFormatDesc channelDescTex = TextureHelpers.cudaCreateChannelDesc(32, 0, 0, 0, cudaChannelFormatKind.cudaChannelFormatKindFloat); cudaArray_t cuArrayTex = TextureHelpers.CreateCudaArray(channelDescTex, src, (int)width, (int)height); cudaResourceDesc resDescTex = TextureHelpers.CreateCudaResourceDesc(cuArrayTex); //create Texture descriptor cudaTextureDesc texDesc = TextureHelpers.CreateCudaTextureDesc(); //create Texture object cudaTextureObject_t texObj; cuda.CreateTextureObject(out texObj, ref resDescTex, ref texDesc); //create and bind surface dynamic wrapper = runner.Wrap(new Program()); wrapper.Sobel(texObj, imageCompute, (int)width, (int)height); ushort[] outputPixel = new ushort[width * height]; for (int i = 0; i < width * height; ++i) { outputPixel[i] = (ushort)imageCompute[i]; } GrayBitmap imageSobel = new GrayBitmap(width, height); imageSobel.PixelsUShort = outputPixel; imageSobel.Save("../../output-03-surface/sobel.bmp"); }
static void Main(string[] args) { HybRunner runner = HybRunner.Cuda().SetDistrib(32, 32, 16, 16, 1, 0); GrayBitmap image = GrayBitmap.Load("../../images/lena512.bmp"); uint height = image.Height, width = image.Width; ushort[] inputPixels = image.PixelsUShort; float[] imageFloat = new float[width * height]; for (int i = 0; i < width * height; ++i) { imageFloat[i] = (float)inputPixels[i]; } IntPtr src = runner.Marshaller.MarshalManagedToNative(imageFloat); //bind texture cudaChannelFormatDesc channelDescTex = TextureHelpers.cudaCreateChannelDesc(32, 0, 0, 0, cudaChannelFormatKind.cudaChannelFormatKindFloat); cudaArray_t cuArrayTex = TextureHelpers.CreateCudaArray(channelDescTex, src, (int)width, (int)height); cudaResourceDesc resDescTex = TextureHelpers.CreateCudaResourceDesc(cuArrayTex); //create Texture descriptor cudaTextureDesc texDesc = TextureHelpers.CreateCudaTextureDesc(); //create Texture object cudaTextureObject_t texObj; cuda.CreateTextureObject(out texObj, ref resDescTex, ref texDesc); //bind surface cudaChannelFormatDesc channelDescSurf = TextureHelpers.cudaCreateChannelDesc(32, 0, 0, 0, cudaChannelFormatKind.cudaChannelFormatKindFloat); cudaArray_t cuArraySurf; cuda.MallocArray(out cuArraySurf, ref channelDescSurf, width, height, cudaMallocArrayFlags.cudaArraySurfaceLoadStore); //create cudaResourceDesc for surface cudaResourceDesc resDescSurf = TextureHelpers.CreateCudaResourceDesc(cuArraySurf); //create surface object cudaSurfaceObject_t surfObj; cuda.CreateSurfaceObject(out surfObj, ref resDescSurf); dynamic wrapper = runner.Wrap(new Program()); wrapper.Sobel(texObj, surfObj, (int)width, (int)height); //pinned float array to allow the copy of the surface object on the host float[] imageCompute = new float[width * height]; GCHandle handle = GCHandle.Alloc(imageCompute, GCHandleType.Pinned); IntPtr dest = handle.AddrOfPinnedObject(); cuda.MemcpyFromArray(dest, cuArraySurf, 0, 0, width * height * sizeof(float), cudaMemcpyKind.cudaMemcpyDeviceToHost); ushort[] outputPixel = new ushort[width * height]; for (int i = 0; i < width * height; ++i) { outputPixel[i] = (ushort)imageCompute[i]; } GrayBitmap imageSobel = new GrayBitmap(width, height); imageSobel.PixelsUShort = outputPixel; imageSobel.Save("../../output-3-surface/sobel.bmp"); }