Laboratoř ČeskýchHer.cz - PasteBin

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
 
namespace PixelTest
{
    class Program
    {
        unsafe static void Main(string[] args)
        {
            DateTime start = DateTime.Now;
 
            int width = 800;
            int height = 600;
 
            Col[,] array = new Col[width, height];
 
            WriteInfo("malloc(" + width + ", " + height + ")", start);
            start = DateTime.Now;
 
            for (int i = 0; i != width; i++)
            {
                for (int j = 0; j != height; j++)
                {
                    array[i,j] = new Col(1, 2, 3);
                }
            }
 
            WriteInfo("init(" + width + ", " + height + ")", start);
 
            Random r = new Random();
 
            while (true)
            {
                start = DateTime.Now;
 
                Col* arrayPtr = null;
 
                for (int i = 0; i != width; i++)
                {
                    fixed (Col* ptr = &array[i, 0])
                    {
                        arrayPtr = ptr;
                        for (int j = 0; j != height; j++)
                        {                            
                            arrayPtr->a = (arrayPtr->b) * (arrayPtr->c);
                            arrayPtr->b = (arrayPtr->a) * (arrayPtr->c);
                            arrayPtr->c = (arrayPtr->a) * (arrayPtr->b);
                            arrayPtr++;
                        }
                    }
                }
 
                Console.SetCursorPosition(0, 2);
                WriteInfo("re-set(" + width + ", " + height + ")", start);
            }
 
        }
 
        static void WriteInfo(string prefix, DateTime start)
        {
            Console.WriteLine(prefix + ": " + Math.Round((DateTime.Now - start).TotalMilliseconds) + " ms -> " + Math.Round(1000 / (DateTime.Now - start).TotalMilliseconds) + " fps                      ");
        }
    }
    struct Col
    {
        public float a;
        public float b;
        public float c;
 
        public Col(float a, float b, float c)
        {
            this.a = a;
            this.b = b;
            this.c = c;
        }
    }
}