Attachment 65766 Details for Bug 146792

program to test SDL screen update speed

testfps.cpp (text/plain), 1.07 KB, created by Martin Bickel on 2006-01-30 21:23:28 UTC

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Creator: Martin Bickel

Created: 2006-01-30 21:23:28 UTC

Size: 1.07 KB

patch

obsolete

>/* 
>prerequisite packages:
>	SDL 
>	SDL-devel
>
>to compile:
>	g++ -I/usr/X11R6/include -I/usr/include/SDL -D_REENTRANT -c testfps.cpp
>	g++ -o testfps  testfps.o -lm -lSDL -lpthread	
>
>*/
>
>#include <stdio.h>
>#include <stdlib.h>
>
>#include "SDL.h"
>
>int main()
>{
>	/* Initialize SDL */
>	if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
>		fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
>		exit(1);
>	}
>	atexit(SDL_Quit);
>
>	int video_bpp;
>	const SDL_VideoInfo *info = SDL_GetVideoInfo();
>	if ( info->vfmt->BitsPerPixel > 8 ) {
>		video_bpp = info->vfmt->BitsPerPixel;
>	} else {
>		video_bpp = 16;
>                fprintf(stderr, "forced 16 bpp mode\n");
>	}
>
>	SDL_Surface *screen;
>	if ( (screen=SDL_SetVideoMode(1000,700,video_bpp,SDL_SWSURFACE)) == NULL ) {
>		fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());
>		exit(2);
>	}
>
>	int time = 10;
>	Uint32 ticks1 = SDL_GetTicks();
>	Uint32 ticks2;
>	int frames = 0;
>
>	do {
>		SDL_UpdateRect(screen, 0, 0, 0, 0);
>		++frames;
>		ticks2 = SDL_GetTicks();
>	} while ( ticks2 - ticks1 < time * 1000 );
>
>	printf("%d fps\n", frames / time );
>	return(0);
>}

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Attachments on bug 146792: 65766