public static cudaArray_t CreateCudaArray(cudaChannelFormatDesc channelDescTex, IntPtr src, int width, int height)
{
cudaArray_t cuArrayTex;
cuda.MallocArray(out cuArrayTex, ref channelDescTex, width, height, cudaMallocArrayFlags.cudaArrayDefault);
cuda.MemcpyToArray(cuArrayTex, 0, 0, src, width * height * sizeof(float), cudaMemcpyKind.cudaMemcpyHostToDevice);
return(cuArrayTex);
}
protected override void OnLoad(System.EventArgs e)
{
try
{
Console.WriteLine(ClientSize.Width + " " + ClientSize.Height);
Console.WriteLine(GL.GetString(StringName.Version));
Console.WriteLine(GL.GetString(StringName.ShadingLanguageVersion));
GL.Viewport(0, 0, ClientSize.Width, ClientSize.Height);
VSync = VSyncMode.On;
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Less);
// Setup quad VAO
quadVAO = GL.GenVertexArray();
int quadVBO = GL.GenBuffer();
GL.BindVertexArray(quadVAO);
GL.BindBuffer(BufferTarget.ArrayBuffer, quadVBO);
GL.BufferData(BufferTarget.ArrayBuffer, quadVertices.Length * sizeof(float), quadVertices, BufferUsageHint.StaticDraw);
GL.EnableVertexAttribArray(0);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 5 * sizeof(float), 0);
GL.EnableVertexAttribArray(1);
GL.VertexAttribPointer(1, 2, VertexAttribPointerType.Float, false, 5 * sizeof(float), 3 * sizeof(float));
uchar4[] data = new uchar4[Width * Height];
textureID = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, textureID);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, Width, Height, 0, PixelFormat.Bgra, PixelType.UnsignedByte, data);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, Convert.ToInt32(TextureWrapMode.Repeat));
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, Convert.ToInt32(TextureWrapMode.Repeat));
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, Convert.ToInt32(TextureMinFilter.Linear));
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, Convert.ToInt32(TextureMagFilter.Linear));
GL.BindTexture(TextureTarget.Texture2D, 0);
string vsource = File.ReadAllText(@"vertex.glsl");
string fsource = File.ReadAllText(@"fragment.glsl");
shaderProgram = LoadShaderProgram(vsource, fsource);
IntPtr resource;
cuda.ERROR_CHECK(cuda.GraphicsGLRegisterImage(out resource, (uint)textureID, (uint)GL_TEXTURE_MODE.GL_TEXTURE_2D, (uint)cudaGraphicsRegisterFlags.SurfaceLoadStore));
cuda.ERROR_CHECK(cuda.GraphicsMapResources(1, new IntPtr[1] {
resource
}, cudaStream_t.NO_STREAM));
cudaArray_t array;
cuda.ERROR_CHECK(cuda.GraphicsSubResourceGetMappedArray(out array, resource, 0, 0));
cudaChannelFormatDesc channelDescSurf = TextureHelpers.cudaCreateChannelDesc(32, 0, 0, 0, cudaChannelFormatKind.cudaChannelFormatKindUnsigned);
cudaResourceDesc resDescSurf = TextureHelpers.CreateCudaResourceDesc(array);
cuda.CreateSurfaceObject(out surface, ref resDescSurf);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
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");
}
unsafe static void Main(string[] args)
{
HybRunner runner = HybRunner.Cuda(@"Textures and Surfaces_CUDA.dll").SetDistrib(32, 32, 16, 16, 1, 0);
Bitmap baseImage = (Bitmap)Image.FromFile("lena512.bmp");
int height = baseImage.Height, width = baseImage.Width;
byte[] inputPixels = new byte[width * height];
ReadImage(inputPixels, baseImage, width, height);
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, width, 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
cudaResourceDesc resDescSurf = TextureHelpers.CreateCudaResourceDesc(cuArraySurf);
//create surface object
cudaSurfaceObject_t surfObj;
cuda.CreateSurfaceObject(out surfObj, ref resDescSurf);
dynamic wrapper = runner.Wrap(new Program());
// call kernek
wrapper.Sobel(texObj, surfObj, width, height);
float[] imageSobel = new float[width * height];
for (int i = 0; i < width * height; ++i)
{
imageSobel[i] = 128.0F;
}
GCHandle handle = GCHandle.Alloc(imageSobel, GCHandleType.Pinned);
IntPtr dest = handle.AddrOfPinnedObject();
cuda.MemcpyFromArray(dest, cuArraySurf, 0, 0, width * height * sizeof(float), cudaMemcpyKind.cudaMemcpyDeviceToHost);
byte[] imageSobelByte = new byte[width * height];
for (int i = 0; i < width * height; ++i)
{
imageSobelByte[i] = (byte)imageSobel[i];
}
SaveImage("lenaSobel512.bmp", imageSobelByte, width, height);
cuda.DestroySurfaceObject(surfObj);
cuda.DestroyTextureObject(texObj);
}
