Exemplo n.º 1
0
 public static extern CLBuffer CreateFromGLTexture3D(
     [In] CLContext context,
     [In] MemoryFlags flags,
     [In] int target,
     [In] int mipLevel,
     [In] int texture,
     [Out] out CLResultCode error
     );
Exemplo n.º 2
0
 public static extern CLBuffer CreateFromGLRenderbuffer(
     [In] CLContext context,
     [In] MemoryFlags flags,
     [In] int renderBuffer,
     [Out] out CLResultCode error
     );
Exemplo n.º 3
0
 public static extern CLEvent CreateEventFromGLsyncKHR(
     [In] CLContext context,
     [In] IntPtr sync,
     [Out] out CLResultCode error
     );
Exemplo n.º 4
0
        public static void Add()
        {
            CLResultCode error = CLResultCode.Success;

            CLPlatform[] platforms = new CLPlatform[1];
            CL.GetPlatformIds(1, platforms, out _);

            CLDevice[] devices = new CLDevice[1];
            CL.GetDeviceIds(platforms[0], DeviceType.All, 1, devices, out _);

            CLContext context = CL.CreateContext(IntPtr.Zero, devices, IntPtr.Zero, IntPtr.Zero, out _);


            CLProgram program =
                CL.CreateProgramWithSource(context, File.ReadAllText("Kernels/add_arrays.cl"), out error);

            error = CL.BuildProgram(program, 1, devices, null, IntPtr.Zero, IntPtr.Zero);

            if (error != CLResultCode.Success)
            {
                throw new Exception(error.ToString());
            }

            CLKernel kernel = CL.CreateKernel(program, "add", out error);

            Span <float> inputA = new float[]
            {
                1, 24, 5, 43, 41, 56
            };
            Span <float> inputB = new float[]
            {
                72, -323, -1, 43, -41, -26
            };
            Span <float> output = stackalloc float[inputA.Length];

            CLBuffer bufferA = CL.CreateBuffer(context, MemoryFlags.ReadOnly | MemoryFlags.CopyHostPtr, inputA, out _);
            CLBuffer bufferB = CL.CreateBuffer(context, MemoryFlags.ReadOnly | MemoryFlags.CopyHostPtr, inputB, out _);

            CLBuffer outputBuffer = CL.CreateBuffer(context, MemoryFlags.WriteOnly, (UIntPtr)(output.Length * sizeof(float)), IntPtr.Zero, out _);

            //For outputs I wouldn't use that also enqueueing a ReadBuffer is needed regardless
            //CLBuffer outputBuffer = CL.CreateBuffer(context, MemoryFlags.WriteOnly | MemoryFlags.UseHostPtr, output, out _);

            CL.SetKernelArg(kernel, 0, bufferA);
            CL.SetKernelArg(kernel, 1, bufferB);
            CL.SetKernelArg(kernel, 2, outputBuffer);

            CLCommandQueue queue = CL.CreateCommandQueueWithProperties(context, devices[0], IntPtr.Zero, out error);

            CL.EnqueueNDRangeKernel(queue, kernel, 1, null,
                                    new[] { (UIntPtr)inputA.Length }, null, 0, null, out _);

            CL.EnqueueReadBuffer(queue, outputBuffer, true, UIntPtr.Zero, output, null, out _);

            foreach (float f in output)
            {
                Console.WriteLine(f);
            }


            CL.ReleaseMemoryObject(bufferA);
            CL.ReleaseMemoryObject(bufferB);
            CL.ReleaseMemoryObject(outputBuffer);
            CL.ReleaseCommandQueue(queue);
            CL.ReleaseKernel(kernel);
            CL.ReleaseProgram(program);
            CL.ReleaseContext(context);
        }
Exemplo n.º 5
0
        public static void ConvertToGrayscale(string inputPath)
        {
            CLResultCode error = CLResultCode.Success;

            //Get a platform
            CLPlatform[] platforms = new CLPlatform[1];
            CL.GetPlatformIds(1, platforms, out _);

            //Get a device
            CLDevice[] devices = new CLDevice[1];
            CL.GetDeviceIds(platforms[0], DeviceType.Gpu, 1, devices, out _);

            //Create a context
            CLContext context = CL.CreateContext(IntPtr.Zero, devices, IntPtr.Zero, IntPtr.Zero, out error);

            if (error != CLResultCode.Success)
            {
                throw new Exception("Error on creating a context");
            }

            //Create the program from source
            CLProgram program =
                CL.CreateProgramWithSource(context, File.ReadAllText("Kernels/grayscale.cl"), out error);

            error = CL.BuildProgram(program, 1, devices, null, IntPtr.Zero, IntPtr.Zero);

            if (error != CLResultCode.Success)
            {
                throw new Exception($"Error on building program: {error}");
            }


            //Get the kernel which we will use
            CLKernel kernel = CL.CreateKernel(program, "grayscale", out error);

            ImageFormat inputImageFormat = new ImageFormat
            {
                ChannelOrder = ChannelOrder.Bgra,
                ChannelType  = ChannelType.UnsignedInteger8
            };

            Bitmap     inputBitmap = new Bitmap(inputPath);
            BitmapData inputData   = inputBitmap.LockBits(new Rectangle(0, 0, inputBitmap.Width, inputBitmap.Height),
                                                          ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);

            ImageDescription imageDescription = new ImageDescription()
            {
                ImageType = MemoryObjectType.Image2D,
                Width     = (UIntPtr)inputBitmap.Width,
                Height    = (UIntPtr)inputBitmap.Height,
                Depth     = (UIntPtr)1
            };

            CLImage inputImage = CL.CreateImage(context, MemoryFlags.ReadOnly | MemoryFlags.CopyHostPtr,
                                                ref inputImageFormat, ref imageDescription, inputData.Scan0, out error);

            Bitmap     outputBitmap = new Bitmap(inputBitmap.Width, inputBitmap.Height, PixelFormat.Format32bppArgb);
            BitmapData outputData   = outputBitmap.LockBits(new Rectangle(0, 0, inputBitmap.Width, inputBitmap.Height),
                                                            ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);

            CLImage outputImage = CL.CreateImage(context, MemoryFlags.WriteOnly | MemoryFlags.UseHostPtr,
                                                 ref inputImageFormat, ref imageDescription, outputData.Scan0, out error);

            CL.SetKernelArg(kernel, 0, rFact);
            CL.SetKernelArg(kernel, 1, gFact);
            CL.SetKernelArg(kernel, 2, bFact);

            CL.SetKernelArg(kernel, 3, inputImage);
            CL.SetKernelArg(kernel, 4, outputImage);

            CLCommandQueue queue = CL.CreateCommandQueueWithProperties(context, devices[0], IntPtr.Zero, out error);

            CL.EnqueueNDRangeKernel(queue, kernel, 2, new UIntPtr[] { UIntPtr.Zero, UIntPtr.Zero, }, new[]
            {
                (UIntPtr)inputBitmap.Width,
                (UIntPtr)inputBitmap.Height,
            }, null, 0, null, out _);

            CL.EnqueueReadImage(queue, outputImage, 1, new UIntPtr[] { UIntPtr.Zero, UIntPtr.Zero, },
                                new UIntPtr[]
            {
                (UIntPtr)inputBitmap.Width,
                (UIntPtr)inputBitmap.Height,
                (UIntPtr)1,
            }, UIntPtr.Zero, UIntPtr.Zero, outputData.Scan0, 0, null, out _);

            outputBitmap.UnlockBits(outputData);

            outputBitmap.Save("grayscale.png", System.Drawing.Imaging.ImageFormat.Png);

            //Dispose of all things
            inputBitmap.Dispose();
            outputBitmap.Dispose();

            CL.ReleaseMemoryObject(inputImage);
            CL.ReleaseMemoryObject(outputImage);

            CL.ReleaseCommandQueue(queue);
            CL.ReleaseKernel(kernel);
            CL.ReleaseProgram(program);
            CL.ReleaseContext(context);
        }