public static void Execute(byte[] bitmap)
{
DateTime dt = DateTime.Now;
CudafyModule km = CudafyModule.TryDeserialize(csFILENAME);
// Check the module exists and matches the .NET modules, else make new
if (km == null || !km.TryVerifyChecksums())
{
Console.WriteLine("There was no cached module available so we make a new one.");
km = CudafyModule.Deserialize(typeof(ray_serialize).Name);
km.Serialize(csFILENAME);
}
GPGPU gpu = CudafyHost.GetGPGPU(CudafyModes.Target, 1);
gpu.LoadModule(km);
Console.WriteLine("Time taken to load module: {0}ms", DateTime.Now.Subtract(dt).Milliseconds);
// capture the start time
gpu.StartTimer();
// allocate memory on the GPU for the bitmap (same size as ptr)
byte[] dev_bitmap = gpu.Allocate(bitmap);
// allocate temp memory, initialize it, copy to constant memory on the GPU
Sphere[] temp_s = new Sphere[SPHERES];
for (int i = 0; i < SPHERES; i++)
{
temp_s[i].r = rnd(1.0f);
temp_s[i].g = rnd(1.0f);
temp_s[i].b = rnd(1.0f);
temp_s[i].x = rnd(1000.0f) - 500;
temp_s[i].y = rnd(1000.0f) - 500;
temp_s[i].z = rnd(1000.0f) - 500;
temp_s[i].radius = rnd(100.0f) + 20;
}
gpu.CopyToConstantMemory(temp_s, s);
// generate a bitmap from our sphere data
dim3 grids = new dim3(DIM / 16, DIM / 16);
dim3 threads = new dim3(16, 16);
gpu.Launch(grids, threads, "kernel", dev_bitmap);
// copy our bitmap back from the GPU for display
gpu.CopyFromDevice(dev_bitmap, bitmap);
// get stop time, and display the timing results
float elapsedTime = gpu.StopTimer();
Console.WriteLine("Time to generate: {0} ms", elapsedTime);
gpu.DeviceFreeAll();
}
