public void Run()
{
// --------------------------------------------------------------------------------------
// Init Direct3D11
// --------------------------------------------------------------------------------------
// Create Device and SwapChain
var device = new Device(DriverType.Hardware, DeviceCreationFlags.Debug);
var context = device.ImmediateContext;
const int Width = 1024;
const int Height = 1024;
const int Count = 1000;
Console.WriteLine("Texture Size: ({0},{1}) - Count: {2}", Width, Height, Width * Height);
Console.WriteLine();
// Create random buffer
var random = new Random();
float maxScale = (float)((byte)random.Next());
var randbomBuffer = new DataStream(sizeof(float) * Width * Height, true, true);
for (int i = 0; i < Width * Height; i++)
{
var value = (float)random.NextDouble();
if (value < 0.1 || value > 0.9)
{
value = value * (float)random.NextDouble() * maxScale * ((value < 0.1) ? maxScale : 1.0f);
}
randbomBuffer.Write(value);
}
// Create random 2D texture
var texture = new Texture2D(
device,
new Texture2DDescription
{
ArraySize = 1,
BindFlags = BindFlags.ShaderResource,
CpuAccessFlags = CpuAccessFlags.None,
Format = Format.R32_Float,
Width = Width,
Height = Height,
MipLevels = 1,
OptionFlags = ResourceOptionFlags.None,
SampleDescription = new SampleDescription(1, 0),
Usage = ResourceUsage.Immutable
}, new DataRectangle(randbomBuffer.DataPointer, sizeof(float) * Width));
var textureView = new ShaderResourceView(device, texture);
var gpuProfiler = new GPUProfiler();
gpuProfiler.Initialize(device);
double elapsedTime = 0.0f;
Console.WriteLine("Compiling Shaders...");
Console.WriteLine();
var pixelShaderMinMax = new MipMapMinMax();
pixelShaderMinMax.Size = new Size(Width, Height);
pixelShaderMinMax.Initialize(device);
var testRunner = new Action <IMinMaxProcessor>((processor) =>
{
gpuProfiler.Begin(context);
for (int i = 0; i < Count; i++)
{
processor.Reduce(context, textureView);
}
gpuProfiler.End(context);
context.Flush();
float newMin;
float newMax;
processor.GetResults(context, out newMin, out newMax);
elapsedTime = gpuProfiler.GetElapsedMilliseconds(context);
Console.WriteLine("GPU {0}: {1} / {2} in {3}ms", processor, newMin, newMax, elapsedTime);
});
Console.WriteLine("Running Tests...");
Console.WriteLine();
var clock = new Stopwatch();
var min = float.MaxValue;
var max = float.MinValue;
unsafe
{
var buffer = (float *)randbomBuffer.DataPointer;
clock.Start();
for (int j = 0; j < Count; j++)
//for (int j = 0; j < 1; j++)
{
min = float.MaxValue;
max = float.MinValue;
for (int i = 0; i < Width * Height; i++)
{
var value = buffer[i];
if (value < min)
{
min = value;
}
if (value > max)
{
max = value;
}
}
}
clock.Stop();
}
Console.WriteLine("CPU MinMax: {0} / {1} {2}ms", min, max, clock.ElapsedMilliseconds);
Console.WriteLine();
for (int i = 1; i < 4; i++)
{
pixelShaderMinMax.ReduceFactor = i;
testRunner(pixelShaderMinMax);
}
Console.WriteLine();
}
public void Run()
{
// --------------------------------------------------------------------------------------
// Init Direct3D11
// --------------------------------------------------------------------------------------
// Create Device and SwapChain
var device = new Device(DriverType.Hardware, DeviceCreationFlags.None);
var context = device.ImmediateContext;
const int Width = 1024;
const int Height = 1024;
const int Count = 1000;
Console.WriteLine("Texture Size: ({0},{1}) - Count: {2}", Width, Height, Width * Height);
Console.WriteLine();
// Create random buffer
var random = new Random();
float maxScale = (float)((byte)random.Next());
var randbomBuffer = new DataStream(sizeof(float) * Width * Height, true, true);
for (int i = 0; i < Width * Height; i++)
{
var value = (float)random.NextDouble();
if (value < 0.1 || value > 0.9)
value = value * (float)random.NextDouble() * maxScale * ((value < 0.1) ? maxScale : 1.0f);
randbomBuffer.Write(value);
}
// Create random 2D texture
var texture = new Texture2D(
device,
new Texture2DDescription
{
ArraySize = 1,
BindFlags = BindFlags.ShaderResource,
CpuAccessFlags = CpuAccessFlags.None,
Format = Format.R32_Float,
Width = Width,
Height = Height,
MipLevels = 1,
OptionFlags = ResourceOptionFlags.None,
SampleDescription = new SampleDescription(1, 0),
Usage = ResourceUsage.Immutable
}, new DataRectangle(randbomBuffer.DataPointer, sizeof(float) * Width));
var textureView = new ShaderResourceView(device, texture);
var gpuProfiler = new GPUProfiler();
gpuProfiler.Initialize(device);
double elapsedTime = 0.0f;
Console.WriteLine("Compiling Shaders...");
Console.WriteLine();
var pixelShaderMinMax = new MipMapMinMax();
pixelShaderMinMax.Size = new Size(Width, Height);
pixelShaderMinMax.Initialize(device);
var testRunner = new Action<IMinMaxProcessor>( (processor) =>
{
gpuProfiler.Begin(context);
for (int i = 0; i < Count; i++)
{
processor.Reduce(context, textureView);
}
gpuProfiler.End(context);
context.Flush();
float newMin;
float newMax;
processor.GetResults(context, out newMin, out newMax);
elapsedTime = gpuProfiler.GetElapsedMilliseconds(context);
Console.WriteLine("GPU {0}: {1} / {2} in {3}ms", processor, newMin, newMax, elapsedTime);
});
Console.WriteLine("Running Tests...");
Console.WriteLine();
var clock = new Stopwatch();
var min = float.MaxValue;
var max = float.MinValue;
unsafe
{
var buffer = (float*)randbomBuffer.DataPointer;
clock.Start();
for (int j = 0; j < Count; j++)
//for (int j = 0; j < 1; j++)
{
min = float.MaxValue;
max = float.MinValue;
for (int i = 0; i < Width * Height; i++)
{
var value = buffer[i];
if (value < min) min = value;
if (value > max) max = value;
}
}
clock.Stop();
}
Console.WriteLine("CPU MinMax: {0} / {1} {2}ms", min, max, clock.ElapsedMilliseconds);
Console.WriteLine();
for (int i = 1; i < 4; i++)
{
pixelShaderMinMax.ReduceFactor = i;
testRunner(pixelShaderMinMax);
}
Console.WriteLine();
}
