myapp.cpp

#include "precomp.h"
#include "myapp.h"

TheApp* CreateApp() { return new MyApp(); }

// -----------------------------------------------------------
// Initialize the application
// -----------------------------------------------------------
void MyApp::Init()
{
	// anything that happens only once at application start goes here
}

// -----------------------------------------------------------
// Main application tick function - Executed once per frame
// -----------------------------------------------------------
void MyApp::Tick( float deltaTime )
{

	// NOTE: clear this function before actual use; code is only for 
	// demonstration purposes. See _ getting started.pdf for details.
	
	// clear the screen to black
	screen->Clear( 0 );
	// print something to the console window
	printf( "hello world!\n" );
	// plot some colors
	for (int red = 0; red < 256; red++) for (int green = 0; green < 256; green++)
	{
		int x = red, y = green;
		screen->Plot( x + 200, y + 100, (red << 16) + (green << 8) );
	}
	// plot a white pixel in the bottom right corner
	screen->Plot( SCRWIDTH - 2, SCRHEIGHT - 2, 0xffffff );

#if 0

	static Kernel* kernel = 0;			// statics should be members of MyApp of course.
	static Surface bitmap( 512, 512 );	// having them here allows us to disable the OpenCL
	static Buffer* clBuffer = 0;		// demonstration using a single #if 0.
	static int offset = 0;
	if (!kernel)
	{
		// prepare for OpenCL work
		Kernel::InitCL();		
		// compile and load kernel "render" from file "kernels.cl"
		kernel = new Kernel( "cl/kernels.cl", "render" );
		// create an OpenCL buffer over using bitmap.pixels
		clBuffer = new Buffer( 512 * 512, Buffer::DEFAULT, bitmap.pixels );
	}
	// pass arguments to the OpenCL kernel
	kernel->SetArgument( 0, clBuffer );
	kernel->SetArgument( 1, offset++ );
	// run the kernel; use 512 * 512 threads
	kernel->Run( 512 * 512 );
	// get the results back from GPU to CPU (and thus: into bitmap.pixels)
	clBuffer->CopyFromDevice();
	// show the result on screen
	bitmap.CopyTo( screen, 500, 200 );

#endif

}