// Computes the simulation via OpenCL
void OpenCLTick()
{
for (int i = 0; i < patternbuffer.Length; i++) patternbuffer[i] = 0;
patternbuffer.CopyToDevice();
secondbuffer.CopyToDevice();
// Set openCL arguments
kernel.SetArgument(0, patternbuffer);
kernel.SetArgument(1, secondbuffer);
kernel.SetArgument(2, pw);
kernel.SetArgument(3, ph);
// Execute kernel
long[] workSize = { pw*32,ph };
// NO INTEROP PATH:
// Use OpenCL to fill a C# pixel array, encapsulated in an
// OpenCLBuffer<int> object (buffer). After filling the buffer, it
// is copied to the screen surface, so the template code can show
// it in the window.
// execute the kernel
kernel.Execute(workSize);
// get the data from the device to the host
patternbuffer.CopyFromDevice();
// swap buffers
for (int i = 0; i < pw * ph; i++) second[i] = patternbuffer[i];
}
// SIMULATE
// Takes the pattern in array 'second', and applies the rules of Game of Life to produce the next state
// in array 'pattern'. At the end, the result is copied back to 'second' for the next generation.
void Simulate()
{
pattern_buffer.CopyToDevice();
second_buffer.CopyToDevice();
// clear destination pattern
// for (int i = 0; i < pw * ph; i++) pattern[i] = 0;
long[] worksize_empty = { pw *ph };
empty.Execute(worksize_empty);
// process all pixels, skipping one pixel boundary
uint w = (pw * 32) - 1, h = ph - 1;
long[] worksize_process = { w, h };
process.Execute(worksize_process);
/*
* for (uint y = 1; y < h; y++)
* {
* for (uint x = 1; x < w; x++)
* {
* // count active neighbors
* uint n = GetBit(x - 1, y - 1) + GetBit(x, y - 1) + GetBit(x + 1, y - 1) + GetBit(x - 1, y) +
* GetBit(x + 1, y) + GetBit(x - 1, y + 1) + GetBit(x, y + 1) + GetBit(x + 1, y + 1);
* if ((GetBit(x, y) == 1 && n == 2) || n == 3) BitSet(x, y);
* }
* }
*/
// swap buffers
//for (int i = 0; i < pw * ph; i++) second[i] = pattern[i];
long[] worksize_swap = { pw *ph };
swap.Execute(worksize_swap);
pattern_buffer.CopyFromDevice();
second_buffer.CopyFromDevice();
}
public void Process()
{
GL.Finish();
screen.Clear(0);
timer.Start();
generatie++;
// if (generatie % 2 == 1) {
// k_sim.SetArgument(0, patroon);
// k_sim.SetArgument(1, volgende); // @Todo: dit ook voor de halo kernels
// k_copy.SetArgument(0, patroon);
// k_copy.SetArgument(1, volgende);
// }
// else {
// k_sim.SetArgument(0, volgende);
// k_sim.SetArgument(1, patroon);
// k_copy.SetArgument(0, volgende);
// k_copy.SetArgument(1, patroon);
// }
if (GLInterop)
{
if (resolution != lastResolution)
{
image = new OpenCLImage <int>(ocl, resolution.x, resolution.y);
lastResolution = resolution;
k_sim.SetArgument(3, resolution);
}
k_sim.SetArgument(5, image);
k_sim.LockOpenGLObject(image.texBuffer);
k_sim.Execute(werk);
k_sim.UnlockOpenGLObject(image.texBuffer);
}
else
{
k_sim.SetArgument(5, buffer);
k_sim.Execute(werk);
buffer.CopyFromDevice();
for (int i = 0; i < buffer.Length; ++i)
{
screen.pixels[i] = buffer[i];
}
}
k_copy.Execute(werk_klein); // Kopieer wat zojuist in patroon is geschreven naar de tweede buffer
timer.Stop();
Console.Write("\r{0}ms", timer.ElapsedMilliseconds);
timer.Reset();
}
public void Tick()
{
GL.Finish();
// clear the screen
screen.Clear( 0 );
// do opencl stuff
if (GLInterop) kernel.SetArgument( 0, image );
else kernel.SetArgument( 0, buffer );
kernel.SetArgument( 1, t );
t += 0.1f;
// execute kernel
long [] workSize = { 512, 512 };
long [] localSize = { 32, 4 };
if (GLInterop)
{
// INTEROP PATH:
// Use OpenCL to fill an OpenGL texture; this will be used in the
// Render method to draw a screen filling quad. This is the fastest
// option, but interop may not be available on older systems.
// lock the OpenGL texture for use by OpenCL
kernel.LockOpenGLObject( image.texBuffer );
// execute the kernel
kernel.Execute( workSize, localSize );
// unlock the OpenGL texture so it can be used for drawing a quad
kernel.UnlockOpenGLObject( image.texBuffer );
}
else
{
// NO INTEROP PATH:
// Use OpenCL to fill a C# pixel array, encapsulated in an
// OpenCLBuffer<int> object (buffer). After filling the buffer, it
// is copied to the screen surface, so the template code can show
// it in the window.
// execute the kernel
kernel.Execute( workSize, localSize );
// get the data from the device to the host
buffer.CopyFromDevice();
// plot pixels using the data on the host
for( int y = 0; y < 512; y++ ) for( int x = 0; x < 512; x++ )
{
screen.pixels[x + y * screen.width] = buffer[x + y * 512];
}
}
}
// TICK
// Main application entry point: the template calls this function once per frame.
public void Tick()
{
// start timer
timer.Restart();
// run the simulation, 1 step
GL.Finish();
// clear the screen
screen.Clear(0);
// do opencl stuff
if (!GLInterop)
{
kernel.SetArgument(0, buffer);
// if we have an even generation, we set the "pattern" variable in opencl
// to the patternBuffer and "second" to the secondBuffer
// if the generation is odd, we set "pattern" to secondBuffer and
// "second" to patternBuffer
// So every generation these buffers get swapped, so we don't have to
// manually swap them every time
if (generation % 2 == 0)
{
kernel.SetArgument(4, patternBuffer);
kernel.SetArgument(5, secondBuffer);
}
else
{
kernel.SetArgument(4, secondBuffer);
kernel.SetArgument(5, patternBuffer);
}
}
kernel.SetArgument(6, xoffset);
kernel.SetArgument(7, yoffset);
// execute kernel
long[] workSize = { amountOfCells };
if (GLInterop)
{
// INTEROP PATH:
// Use OpenCL to fill an OpenGL texture; this will be used in the
// Render method to draw a screen filling quad. This is the fastest
// option, but interop may not be available on older systems.
// lock the OpenGL texture for use by OpenCL
kernel.LockOpenGLObject( image.texBuffer );
// execute the kernel
kernel.Execute( workSize, null );
// Wait for the kernel to finish
kernel.Finish();
// execute the copy kernel
copyKernel.Execute(workSize, null);
// wait for the copykernel to finish
copyKernel.Finish();
// unlock the OpenGL texture so it can be used for drawing a quad
kernel.UnlockOpenGLObject( image.texBuffer );
}
else
{
// NO INTEROP PATH:
// Use OpenCL to fill a C# pixel array, encapsulated in an
// OpenCLBuffer<int> object (buffer). After filling the buffer, it
// is copied to the screen surface, so the template code can show
// it in the window.
// execute the kernel
kernel.Execute( workSize, null );
// get the data from the device to the host
buffer.CopyFromDevice();
// plot pixels using the data on the host
for (int y = 0; y < screenHeight; y++)
{
for (int x = 0; x < screenWidth; x++)
{
int index = x + y * screenWidth;
screen.pixels[index] = buffer[index];
}
}
}
// report performance
Console.WriteLine("generation " + generation++ + ": " + timer.ElapsedMilliseconds + "ms");
}
// TICK
// Main application entry point: the template calls this function once per frame.
public void Tick()
{
GL.Finish();
// start timer
timer.Restart();
//Initiate work sizes
long[] workSize = { pw, ph };
long[] workSize2 = { pw *ph };
//Set kernel arguments
kernel.SetArgument(5, xoffset);
kernel.SetArgument(6, yoffset);
resolution = (int)(zoom * 512);
long[] workSize3 = { resolution / 32, resolution };
kernel.SetArgument(7, resolution);
// run the simulation, 1 step
screen.Clear(0);
if (GLinterop)
{
if (resolution != oldResolution)
{
image = new OpenCLImage <int>(ocl, resolution, resolution);
oldResolution = resolution;
}
//set image as argument
imageClearKernel.SetArgument(0, image);
imageClearKernel.LockOpenGLObject(image.texBuffer);
imageClearKernel.Execute(workSize3);
imageClearKernel.UnlockOpenGLObject(image.texBuffer);
//lock image object
kernel.SetArgument(0, image);
kernel.LockOpenGLObject(image.texBuffer);
//run kernel
kernel.Execute(workSize);
//unlock image object
kernel.UnlockOpenGLObject(image.texBuffer);
secondKernel.Execute(workSize2);
}
else
{
kernel.SetArgument(0, buffer);
for (int i = 0; i < buffer.Length; i++)
{
buffer[i] = 0;
}
buffer.CopyToDevice();
kernel.Execute(workSize);
secondKernel.Execute(workSize2);
buffer.CopyFromDevice();
for (uint y = 0; y < screen.height; y++)
{
for (uint x = 0; x < screen.width; x++)
{
screen.Plot(x, y, buffer[x + y * 512]);
}
}
}
// visualize current state
// report performance
Console.WriteLine("generation " + generation++ + ": " + timer.ElapsedMilliseconds + "ms");
//Console.ReadLine();
}
