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");
}