fbxbench.c

libfxb是linux下只写操作framebuffer的一个轻量级的库。

/*
 * $Id: fbxbench.c,v 1.7 2001/01/13 22:33:38 lethal Exp $
 */
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <libfbx/libfbx.h>

#define NUM_LINES 1024

int main()
{
	fb_surface *blit;
	fb_surface *image;
	fb_surface *blit2;
	int i;
	FILE *results;

	int start;
	int end;

	results = fopen("/tmp/fbbench-results.txt", "wt");
	
	fb_init();
	fb_handle_signals();

	blit = fb_create_surface(fb_screen->width, fb_screen->height);
	image = fb_create_surface(fb_screen->width, fb_screen->height);
	blit2 = fb_create_surface(fb_screen->width, fb_screen->height);

	fb_draw_image(blit, image, 0, 0);
	fb_draw_image(blit, blit2, 0, 0);

	for(i = 0; i < NUM_LINES; i++)
	{
		fb_line(rand() % blit->width, rand() % blit->height,
			rand() % blit->width, rand() % blit->height,
			rand() % 256, rand() % 256, rand() % 256,
			blit);
	}
	
	fb_cls();
	fb_printf(0, 0, "Testing identical blit (memory to screen)...");
	fprintf(results, "Testing identical blit (memory to screen)...\n");
	sleep(3);
	fb_cls();
	start = time(0);
	for(i = 0; i < 100; i++)
	{
		fb_draw_image(blit, fb_screen, 0, 0);
	}
	end = time(0);
	fprintf(results, "frames: %i, time: %i, fps: %f\n", i, end - start, (float)i/((float)end - (float)start));

	fflush(results);

	fb_cls();
	fb_printf(0, 0, "Testing offset blit (memory to screen)...");
	fprintf(results, "Testing offset blit (memory to screen)...\n");
	sleep(3);
	fb_cls();
	start = time(0);
	for(i = 0; i < 100; i++)
	{
		fb_draw_image(blit, fb_screen, 1, 0);
	}
	end = time(0);
	fprintf(results, "frames: %i, time: %i, fps: %f\n", i, end - start, (float)i/((float)end - (float)start));

	fflush(results);

	fb_cls();
	fb_printf(0, 0, "Testing identical blit (screen to memory)...");
	fprintf(results, "Testing identical blit (screen to memory)...\n");
	sleep(3);
	fb_cls();
	start = time(0);
	for(i = 0; i < 25; i++)
	{
		fb_draw_image(fb_screen, blit, 0, 0);
	}
	end = time(0);
	fprintf(results, "frames: %i, time: %i, fps: %f\n", i, end - start, (float)i/((float)end - (float)start));

	fb_cls();
	fb_printf(0, 0, "Testing offset blit (screen to memory)...");
	fprintf(results, "Testing offset blit (screen to memory)...\n");
	sleep(3);
	fb_cls();

	start = time(0);
	for(i = 0; i < 25; i++)
	{
		fb_draw_image(fb_screen, blit, 1, 0);
	}
	end = time(0);
	fprintf(results, "frames: %i, time: %i, fps: %f\n", i, end - start, (float)i/((float)end - (float)start));

	fb_cls();
	fb_printf(0, 0, "Testing identical blit (memory to memory)...");
	fprintf(results, "Testing identical blit (memory to memory)...\n");
	sleep(3);
	fb_cls();

	start = time(0);
	for(i = 0; i < 100; i++)
	{
		fb_draw_image(image, blit, 0, 0);
	}
	end = time(0);
	fprintf(results, "frames: %i, time: %i, fps: %f\n", i, end - start, (float)i/((float)end - (float)start));

	fb_cls();
	fb_printf(0, 0, "Testing offset blit (memory to memory)...");
	fprintf(results, "Testing offset blit (memory to memory)...\n");
	sleep(3);
	fb_cls();

	start = time(0);
	for(i = 0; i < 100; i++)
	{
		fb_draw_image(image, blit, 1, 0);
	}
	end = time(0);
	fprintf(results, "frames: %i, time: %i, fps: %f\n", i, end - start, (float)i/((float)end - (float)start));

	fb_cls();
	fb_printf(0, 0, "Testing clear (screen)...");
	fprintf(results, "Testing clear (screen)...\n");
	sleep(3);
	fb_cls();

	start = time(0);
	for(i = 0; i < 25; i++)
	{
		fb_cls();
	}
	end = time(0);
	fprintf(results, "frames: %i, time: %i, fps: %f\n", i, end - start, (float)i/((float)end - (float)start));

	fb_cls();
	fb_printf(0, 0, "Testing clear (memory)...");
	fprintf(results, "Testing clear (memory)...\n");
	sleep(3);
	fb_cls();

	start = time(0);
	for(i = 0; i < 100; i++)
	{
		fb_scls(blit);
	}
	end = time(0);
	fprintf(results, "frames: %i, time: %i, fps: %f\n", i, end - start, (float)i/((float)end - (float)start));

	fclose(results);

	fb_cleanup();

	return 0;
}