我正在尝试使用 ILGPU 进行 GPU 处理来加速我的 C# 代码。但是,我遇到了以下错误:
错误 CS0117:“加速器”不包含“创建”的定义。
Accelerator accelerator = Accelerator.Create(...);
错误 CS1729:“Context”不包含采用 0 个参数的构造函数。
Context context = new Context();
我的目标是使用 ILGPU 将油画效果应用于位图图像,并且我遵循了 ILGPU 文档。但是,我似乎遗漏了一些东西或遇到兼容性问题。
这是我的代码的简化版本:
int valu = int.Parse(str[1]);
Bitmap resultImage = new Bitmap(cc);
BitmapData inputImageDa = resultImage.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
BitmapData resultImageData = cc.LockBits(new Rectangle(0, 0, resultImage.Width, resultImage.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
unsafe
{
Parallel.For(0, height, y =>
{
byte* inputRow = (byte*)inputImageDa.Scan0 + (y * inputImageDa.Stride);
byte* resultRow = (byte*)resultImageData.Scan0 + (y * resultImageData.Stride);
Parallel.For(0, width, x =>
{
Color dominantColor = GetDominantColor(inputImageDa, x, y, valu);
byte* resultPixel = resultRow + x * 4;
resultPixel[0] = dominantColor.B;
resultPixel[1] = dominantColor.G;
resultPixel[2] = dominantColor.R;
resultPixel[3] = 255;
});
});
}
cc.UnlockBits(resultImageData);
如果您能提供有关如何解决这些问题并使用 ILGPU 成功运行我的 C# 代码以进行 GPU 加速的指导或建议,我将不胜感激。
谢谢!
编辑:
抱歉,我忘了告诉大家,这是我尝试过的代码:
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using ILGPU;
using ILGPU.Runtime;
class Program
{
static void Main()
{
// Replace with your image loading logic
Bitmap originalImage = new Bitmap("your_image_path.jpg");
int brushSize = 5; // Adjust the brush size as needed
Bitmap resultImage = ApplyOilPaintingEffect(originalImage, brushSize);
// Save or display the result image
resultImage.Save("result_image.jpg");
}
static Bitmap ApplyOilPaintingEffect(Bitmap originalImage, int brushSize)
{
int width = originalImage.Width;
int height = originalImage.Height;
// Convert Bitmap to ILGPU memory buffer
using (var context = new Context())
{
using (var accelerator = new Accelerator(context, AcceleratorType.Cuda)) // Adjust the AcceleratorType as needed
{
var inputBuffer = originalImage.ToBuffer2D(context, accelerator);
var resultBuffer = accelerator.Allocate<Argb32>(width, height);
// Process pixels on GPU
using (var kernel = accelerator.LoadAutoGroupedStreamKernel<int, ArrayView<Argb32>, Index2>())
{
kernel.DefaultNumIterations = inputBuffer.Length;
kernel.Body = (index, inputPixels, outputIndex) =>
{
var value = inputPixels[index];
var hist = new int[256 * 3];
// Collect histogram in the local neighborhood
for (int i = -brushSize; i <= brushSize; i++)
{
for (int j = -brushSize; j <= brushSize; j++)
{
int x = outputIndex.X + i;
int y = outputIndex.Y + j;
if (x >= 0 && x < width && y >= 0 && y < height)
{
var neighborPixel = inputPixels[x, y];
hist[neighborPixel.R]++;
hist[256 + neighborPixel.G]++;
hist[512 + neighborPixel.B]++;
}
}
}
// Find the dominant color
int maxIndex = hist.ToList().IndexOf(hist.Max());
int channel = maxIndex % 256;
int color = maxIndex / 256;
outputIndex = index / width;
// Set the dominant color to the output pixel
outputIndex.X = index - outputIndex.X * width;
var dominantColor = new Argb32((color == 0) ? channel : 0, (color == 1) ? channel : 0, (color == 2) ? channel : 0, 255);
inputPixels[index] = dominantColor;
};
kernel(inputBuffer.Length, inputBuffer, resultBuffer);
}
// Convert ILGPU memory buffer back to Bitmap
Bitmap resultImage = resultBuffer.ToBitmap2D(context, accelerator);
return resultImage;
}
}
}
}
对于您的问题,我发现ilgpu文档的这一页很有帮助。
简而言之,您可以通过命令
Context.Create(...)
或 Context.CreateDefault()
创建上下文,然后选择一个设备 d
,然后通过命令 d.CreateAccelerator(context)
创建加速器。
顺便说一句:由于文档仅涵盖选定的主题,因此我一般建议也浏览 ilgpu 项目的samples 文件夹。